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decision:trading-and-betting

Do 97% of Day Traders Really Lose Money?

Every factual sentence carries assertions checked against the recorded evidence: references must resolve, figures and quotations must be in the cited passage, arithmetic must reproduce, and an independent reviewer must approve the wording. Automated validation says whether the narration is ready for human editorial review; it does not establish truth.

Validation
passed (revision 1)
Runtime
613 words, about 4.2 min at 150 wpm
Assertions
22 of 22 verified
Issues
0 blocking, 2 warnings
Storyboard
24 scenes, 4:24 (ok)
Model
claude-opus-5-5

Open a sentence to see its assertions, their status and the passages behind them. Sentences without a marker make no factual claim.

Hook

On YouTube, Riley Coleman films himself growing a tiny futures account, and says the point is "showing you what's possible if you follow a disciplined, consistent strategy". s01 verified

verified s01.a Riley Coleman's video on growing a small futures account says it is about "showing you what's possible if you follow a disciplined, consistent strategy".

supported (approved): no direct support, 2 qualifying, 1 source statement.

info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.

  • statement I Turned $50 Into $3,754 In 21 Days Trading Futures showing you what's possible if you follow a disciplined, consistent strategy
If discipline is what it takes, how many of the people who try actually end up ahead? Researchers in Brazil and Taiwan counted, and they counted the winners too.

Setup

Ross Cameron of Warrior Trading tells beginners to "learn a strategy that is proven profitable by someone else even if there's no guarantee it'll work for you". s04 verified

verified s04.a Ross Cameron tells beginners to "learn a strategy that is proven profitable by someone else even if there's no guarantee it'll work for you".

supported (approved): no direct support, 2 qualifying, 1 source statement.

info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.

  • statement THIS ⚠️ is why day traders LOSE money learn a strategy that is proven profitable by someone else even if there's no guarantee it'll work for you
Another channel, RP Profits, is blunter: "The strategy is real. The math is real, and there's people using it right now to make money." s05 verified

verified s05.a RP Profits says "The strategy is real. The math is real, and there's people using it right now to make money."

supported (approved): no direct support, 2 qualifying, 1 source statement.

info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.

  • statement If I Wanted to Make $1,000/Day Trading, I'd Do This (Just Copy Me) The strategy is real. The math is real, and there's people using it right now to make money.
Yet the Warrior Trading blog itself carries the line "Trading is risky, and most day traders lose money." s06 verified

verified s06.a The Warrior Trading blog says "Trading is risky, and most day traders lose money."

supported (approved): no direct support, 1 qualifying, 1 source statement.

info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.

  • statement The Real Earnings of a Day Trader Trading is risky, and most day traders lose money.

Investigation

The Brazilian study followed people who began day trading in the country's equity futures market between 2013 and 2015, and sorted them by how many days they kept at it. s08 verified

verified s08.a The Brazil study observes individuals who began to day trade between 2013 and 2015 in the Brazilian equity futures market.

qualified (qualify): 1 supporting (1 independent, strongest 0.7), 1 qualifying.

warning needs-qualification: ESMA CFD intervention 2018: EU regulators' studies found 74-89% of retail CFD accounts lose money, with average losses of 1,600 to 29,000 per investor; CFDs are short-term leveraged speculation rather than day trading as such. [partial: retail CFD accounts are leveraged short-term speculation, overlapping with but not the same as day trading] Add the qualification: the evidence supports a narrower…

  • supports Brazil day-trader study (Chague et al.) right 70%, direct Brazil day-trader study (Chague et al.), lines 30-L36We show that it is virtually impossible for individuals to compete with HFTs and day trade for a living, contrary to what course providers claim. We observe all individuals who began to day trade between 2013 and 2015 in the Brazilian equit…

verified s08.b The Brazil day-trader study computed the net profit of each new day trader, grouped by the number of days they day traded.

qualified (qualify): no direct support, 2 qualifying.

warning needs-qualification: Brazil day-trader study (Chague et al.): The share of day traders with positive net profit falls monotonically with the number of days traded (29.8% at one day to 3.0% beyond 300), consistent with more trading eroding results, though setup quality is not studied. Add the qualification: the evidence supports a narrower or weaker statement.

  • qualifies Brazil day-trader study (Chague et al.) partly 40%, partial Brazil day-trader study (Chague et al.), lines 162-L178We compute the total net prot6 obtained by each one of the 19,646 new day traders. Considering those who day traded for only one day (1,111 individuals), 29.8% obtained positive net prot. Considering those who day traded for 2 to 50 days (9…
Of those who tried it for a single day, 29.8 percent made a net profit, and the share fell at every step after that. s09 verified

verified s09.a In the Brazil study, 29.8% of those who day traded for one day obtained a positive net profit, and the proportion of successful day traders decreases monotonically with the number of days traded.

qualified (qualify): no direct support, 2 qualifying.

warning needs-qualification: Brazil day-trader study (Chague et al.): The share of day traders with positive net profit falls monotonically with the number of days traded (29.8% at one day to 3.0% beyond 300), consistent with more trading eroding results, though setup quality is not studied. Add the qualification: the evidence supports a narrower or weaker statement.

  • qualifies Brazil day-trader study (Chague et al.) partly 40%, partial Brazil day-trader study (Chague et al.), lines 162-L178We compute the total net prot6 obtained by each one of the 19,646 new day traders. Considering those who day traded for only one day (1,111 individuals), 29.8% obtained positive net prot. Considering those who day traded for 2 to 50 days (9…
The authors compare it to roulette, where the more rounds people play, the fewer come out ahead. s10 verified

verified s10.a The Brazil study's authors liken the falling proportion of successful day traders to casino roulette, where the proportion of successful players decreases with the number of rounds played.

qualified (qualify): no direct support, 2 qualifying.

warning needs-qualification: Brazil day-trader study (Chague et al.): The share of day traders with positive net profit falls monotonically with the number of days traded (29.8% at one day to 3.0% beyond 300), consistent with more trading eroding results, though setup quality is not studied. Add the qualification: the evidence supports a narrower or weaker statement.

  • qualifies Brazil day-trader study (Chague et al.) partly 40%, partial Brazil day-trader study (Chague et al.), lines 162-L178We compute the total net prot6 obtained by each one of the 19,646 new day traders. Considering those who day traded for only one day (1,111 individuals), 29.8% obtained positive net prot. Considering those who day traded for 2 to 50 days (9…
Of the 1,551 who kept going for more than 300 days, 97 percent lost money after fees, and only 47 came out ahead. s11 verified

verified s11.a In the Brazil study, 97% of the 1,551 individuals who day traded for more than 300 days lost money net of exchange and brokerage fees.

qualified (qualify): 1 supporting (1 independent, strongest 0.7), 1 qualifying.

warning needs-qualification: ESMA CFD intervention 2018: EU regulators' studies found 74-89% of retail CFD accounts lose money, with average losses of 1,600 to 29,000 per investor; CFDs are short-term leveraged speculation rather than day trading as such. [partial: retail CFD accounts are leveraged short-term speculation, overlapping with but not the same as day trading] Add the qualification: the evidence supports a narrower…

  • supports Brazil day-trader study (Chague et al.) right 70%, direct Brazil day-trader study (Chague et al.), lines 394-L404We next evaluate the performance of the 1,551 individuals who day traded for at least 300 days in Table 2. Considering the performance net of exchange and brokerage fees (Panel C), we nd that 97% of all investors who persisted for more than…

verified s11.b Only 47 of the 1,551 persistent day traders in the Brazil study profited net of fees.

qualified (qualify): no direct support, 2 qualifying.

warning needs-qualification: Brazil day-trader study (Chague et al.): Only 3.0% of persistent day traders were net profitable, 1.1% beat minimum wage and 0.5% a bank teller's wage, with no evidence of improvement with experience. Add the qualification: the evidence supports a narrower or weaker statement.

  • qualifies Brazil day-trader study (Chague et al.) partly 50%, direct Brazil day-trader study (Chague et al.), lines 219-L229The facts that (i) only 47 out of the 1,551 persistent day traders (3.0%) proted net of fees and that (ii) there is no evidence of learning, may not be sucient to discard day trading as a possible career. If the few who proted were able to …
Only 17 earned more than Brazil's minimum wage, and the single best averaged 310 dollars a day. s12 verified

verified s12.a Only 17 of the 1,551 earned more than the Brazilian minimum wage, and the individual who earned the most earned US$310 per day on average.

qualified (qualify): no direct support, 2 qualifying.

warning needs-qualification: Brazil day-trader study (Chague et al.): Only 3.0% of persistent day traders were net profitable, 1.1% beat minimum wage and 0.5% a bank teller's wage, with no evidence of improvement with experience. Add the qualification: the evidence supports a narrower or weaker statement.

  • qualifies Brazil day-trader study (Chague et al.) partly 50%, direct Brazil day-trader study (Chague et al.), lines 219-L229The facts that (i) only 47 out of the 1,551 persistent day traders (3.0%) proted net of fees and that (ii) there is no evidence of learning, may not be sucient to discard day trading as a possible career. If the few who proted were able to …
And the handful who beat a bank teller's starting pay got there on a roller coaster, their daily results swinging by hundreds to thousands of dollars. s13 verified

verified s13.a The individuals in the Brazil study who earned more than a bank teller's initial salary did so with great volatility; the standard deviation of their daily profit ranged from US$632 to US$3,308.

qualified (qualify): no direct support, 2 qualifying.

warning needs-qualification: Brazil day-trader study (Chague et al.): Only 3.0% of persistent day traders were net profitable, 1.1% beat minimum wage and 0.5% a bank teller's wage, with no evidence of improvement with experience. Add the qualification: the evidence supports a narrower or weaker statement.

  • qualifies Brazil day-trader study (Chague et al.) partly 50%, direct Brazil day-trader study (Chague et al.), lines 219-L229The facts that (i) only 47 out of the 1,551 persistent day traders (3.0%) proted net of fees and that (ii) there is no evidence of learning, may not be sucient to discard day trading as a possible career. If the few who proted were able to …
Did the ones who stayed at least get better with practice?
The study found no evidence that they learned. s15 verified

verified s15.a The Brazil study finds no evidence of learning among persistent day traders.

qualified (qualify): no direct support, 2 qualifying.

warning needs-qualification: Brazil day-trader study (Chague et al.): Only 3.0% of persistent day traders were net profitable, 1.1% beat minimum wage and 0.5% a bank teller's wage, with no evidence of improvement with experience. Add the qualification: the evidence supports a narrower or weaker statement.

  • qualifies Brazil day-trader study (Chague et al.) partly 50%, direct Brazil day-trader study (Chague et al.), lines 219-L229The facts that (i) only 47 out of the 1,551 persistent day traders (3.0%) proted net of fees and that (ii) there is no evidence of learning, may not be sucient to discard day trading as a possible career. If the few who proted were able to …
A second study, of individual investors who day traded in Taiwan from 1992 to 2006, found the vast majority of them unprofitable. s27 verified

verified s27.a In the Taiwan study of individual investors who day traded from 1992 to 2006, the vast majority of day traders are unprofitable.

qualified (qualify): 1 supporting (1 independent, strongest 0.7), 1 qualifying.

warning needs-qualification: ESMA CFD intervention 2018: EU regulators' studies found 74-89% of retail CFD accounts lose money, with average losses of 1,600 to 29,000 per investor; CFDs are short-term leveraged speculation rather than day trading as such. [partial: retail CFD accounts are leveraged short-term speculation, overlapping with but not the same as day trading] Add the qualification: the evidence supports a narrower…

  • supports Taiwan day-trader study (Barber et al.) right 70%, direct Taiwan day-trader study (Barber et al.), lines 39-L46We analyze the performance of and learning by individual investors who engage in day trading in Taiwan from 1992 to 2006 and test the proposition that individual investors rationally speculate as day traders in order to learn whether they p…
Taken as a group, they lost 7 basis points a day before costs, where a basis point is a hundredth of a percent, and trading costs more than tripled that loss, to 23.9. s16 verified

warning missing-qualification (review): The 7 and 23.9 basis points are abnormal returns: the intercept of a regression against a value-weighted Taiwan market index (barber-odean L452-L458), weighted by the money invested. "They lost 7 basis points a day" reads as a raw loss on their accounts; it is a shortfall relative to simply holding the market.

verified s16.a In the Taiwan study, day traders lose 7 basis points a day on average before costs, and trading costs more than triple the losses to 23.9 basis points per day.

qualified (qualify): no direct support, 2 qualifying.

warning needs-qualification: Taiwan day-trader study (Barber et al.): Fees turn a 7 bps gross daily loss into 23.9 bps net, showing transaction costs erode frequent traders' returns; fatigue and setup quality are not measured. Add the qualification: the evidence supports a narrower or weaker statement.

  • qualifies Taiwan day-trader study (Barber et al.) partly 40%, direct Taiwan day-trader study (Barber et al.), lines 476-L479In the second column of Table 1, we present the gross abnormal intraday returns of day traders. On average, day traders lose 7 basis points on their day trading before costs (t=-10.2). In the fourth column we see that trading costs more tha…
So is anyone reliably good at this?
A few are: in Taiwan, traders who had already been profitable, with more than 40 days of day trading in the past year, went on to earn more than their trading costs. s18 verified

verified s18.a In the Taiwan study, profitable traders with more than 40 days of day trading experience in the last year earn more than enough to cover their transaction costs.

qualified (qualify): no direct support, 2 qualifying.

warning needs-qualification: Taiwan day-trader study (Barber et al.): Profitable traders with more than 40 days of experience in the prior year do earn more than their trading costs, but such predictably profitable traders are under 3% of day traders. Add the qualification: the evidence supports a narrower or weaker statement.

  • qualifies Taiwan day-trader study (Barber et al.) partly 50%, direct Taiwan day-trader study (Barber et al.), lines 598-L621The results for a 10 trading day event horizon are displayed in Figure 7. The most striking results in the graph are: 1) irrespective of experience, traders with past profits outperform those with past losses and 2) for traders with positiv…
But those predictably profitable traders made up less than 3 percent of all day traders on an average day. s19 verified

verified s19.a In the Taiwan study, predictably profitable traders constitute less than 3% of all day traders on an average day.

qualified (qualify): no direct support, 2 qualifying.

warning needs-qualification: Taiwan day-trader study (Barber et al.): Profitable traders with more than 40 days of experience in the prior year do earn more than their trading costs, but such predictably profitable traders are under 3% of day traders. "all" is stronger than the evidence (strongest support 0). Add the qualification: the evidence supports a narrower or weaker statement.

  • qualifies Taiwan day-trader study (Barber et al.) partly 50%, direct Taiwan day-trader study (Barber et al.), lines 598-L621The results for a 10 trading day event horizon are displayed in Figure 7. The most striking results in the graph are: 1) irrespective of experience, traders with past profits outperform those with past losses and 2) for traders with positiv…
Ross Cameron names one reason the rest struggle: "when you trade against the high frequency trading algorithms, trading large caps, you really don't have a good edge". s20 verified

warning overgeneralization (review): In context Cameron explains why his own accuracy fell when he traded large caps against HFT algorithms; he is not explaining why the traders in the Brazil and Taiwan studies lost. "Names one reason the rest struggle" gives his remark a scope it does not have.

verified s20.a Ross Cameron says "when you trade against the high frequency trading algorithms, trading large caps, you really don't have a good edge".

supported (approved): no direct support, 1 qualifying, 1 source statement.

info wording: Wording differs from the canonical claim; the reviewer confirms the passages entail it.

  • statement Growing a $2k Account to $65,662.04 in 30 Days (My Day Trading Strategy) when you trade against the high frequency trading algorithms, trading large caps, you really don't have a good edge
The Brazilian futures data point the same way in a different market: when high-frequency traders' share of deals rose by 10 percent, individuals' average loss was 19 percent higher. s21 verified

verified s21.a In the Brazil study, individuals' average loss is 19% higher when the fraction of deals by high-frequency traders increases by 10%.

qualified (qualify): no direct support, 1 qualifying.

warning needs-qualification: Brazil day-trader study (Chague et al.): Individuals' average daily loss is 19% higher when the HFT share of deals rises 10 points, and the authors conclude it is virtually impossible to compete with HFTs; the venue is index futures rather than large-cap stocks. Add the qualification: the evidence supports a narrower or weaker statement.

  • qualifies Brazil day-trader study (Chague et al.) right 50%, partial Brazil day-trader study (Chague et al.), lines 384-L393H F T , which is the daily fraction of HFTs in the number of deals. As expected, we nd a H F Tstrong negative coecient of , indicating that the increasing presence of these investors is related to greater losses by individualsaccording to c…

Answer

So yes: in both studies most people lost, and in Brazil the longer they kept at it, the worse their odds of being ahead. s22 verified

info needs-human (review): "So yes:" answers the title question (do most lose), but the viewer last heard s02, which asks "how many ... actually end up ahead?"; a yes does not answer a how-many question.

verified s22.a In the Brazil study 97% of those who day traded more than 300 days lost money net of fees, and the share with a positive net profit fell with the number of days traded.

qualified (qualify): 1 supporting (1 independent, strongest 0.7), 3 qualifying.

warning needs-qualification: Brazil day-trader study (Chague et al.): The share of day traders with positive net profit falls monotonically with the number of days traded (29.8% at one day to 3.0% beyond 300), consistent with more trading eroding results, though setup quality is not studied. Add the qualification: the evidence supports a narrower or weaker statement.

  • supports Brazil day-trader study (Chague et al.) right 70%, direct Brazil day-trader study (Chague et al.), lines 394-L404We next evaluate the performance of the 1,551 individuals who day traded for at least 300 days in Table 2. Considering the performance net of exchange and brokerage fees (Panel C), we nd that 97% of all investors who persisted for more than…
  • qualifies Brazil day-trader study (Chague et al.) partly 40%, partial Brazil day-trader study (Chague et al.), lines 162-L178We compute the total net prot6 obtained by each one of the 19,646 new day traders. Considering those who day traded for only one day (1,111 individuals), 29.8% obtained positive net prot. Considering those who day traded for 2 to 50 days (9…

verified s22.b In the Taiwan study the vast majority of day traders are unprofitable.

qualified (qualify): 1 supporting (1 independent, strongest 0.7), 1 qualifying.

warning needs-qualification: ESMA CFD intervention 2018: EU regulators' studies found 74-89% of retail CFD accounts lose money, with average losses of 1,600 to 29,000 per investor; CFDs are short-term leveraged speculation rather than day trading as such. [partial: retail CFD accounts are leveraged short-term speculation, overlapping with but not the same as day trading] Add the qualification: the evidence supports a narrower…

  • supports Taiwan day-trader study (Barber et al.) right 70%, direct Taiwan day-trader study (Barber et al.), lines 39-L46We analyze the performance of and learning by individual investors who engage in day trading in Taiwan from 1992 to 2006 and test the proposition that individual investors rationally speculate as day traders in order to learn whether they p…
Some people do beat the odds, and in Taiwan the ones who had been winning tended to keep winning, but they were a sliver of everyone who tried. s23 verified

verified s23.a In the Taiwan study an extensive history of profitability is a strong predictor of future profitability, but very few traders are predictably profitable.

qualified (qualify): no direct support, 2 qualifying.

warning needs-qualification: Taiwan day-trader study (Barber et al.): Profitable traders with more than 40 days of experience in the prior year do earn more than their trading costs, but such predictably profitable traders are under 3% of day traders. Add the qualification: the evidence supports a narrower or weaker statement.

  • qualifies Taiwan day-trader study (Barber et al.) partly 50%, direct Taiwan day-trader study (Barber et al.), lines 598-L621The results for a 10 trading day event horizon are displayed in Figure 7. The most striking results in the graph are: 1) irrespective of experience, traders with past profits outperform those with past losses and 2) for traders with positiv…
Both studies looked at other markets and other years than today's American stock market, so they give the odds there, not a law for every market. What these counts can't do is check any one trader's month: a screenshot of a small account turned into a big one is neither confirmed nor ruled out by a tally of everyone who tried.

Takeaway

If someone sells you a strategy as consistent, ask for audited results across every account and every month, not the best screenshot. And if you try it anyway, put in only what you can afford to lose, and judge yourself by your results after fees, not by your best day.

24 scenes, 4:24 at 150 words per minute including pauses. Narration is copied from the script; every chart value and on-screen citation is checked against a passage.

1. sc01 · 0:00 to 0:11 typography

On YouTube, Riley Coleman films himself growing a tiny futures account, and says the point is "showing you what's possible if you follow a disciplined, consistent strategy".

Visual. Quote card: the quoted words only, 'disciplined, consistent strategy' held in accent colour as it is spoken.

On screen. "showing you what's possible if you follow a disciplined, consistent strategy"

Cite. Riley Coleman, YouTube

2. sc02 · 0:11 to 0:19 typography

If discipline is what it takes, how many of the people who try actually end up ahead?

Visual. The question types on in large type; 'end up ahead' held a beat in accent colour.

On screen. How many of the people who try actually end up ahead?

3. sc03 · 0:19 to 0:23 typography

Researchers in Brazil and Taiwan counted, and they counted the winners too.

Visual. A single title line: 'Brazil and Taiwan', 'counted' punching in under it.

On screen. Researchers in Brazil and Taiwan counted

4. sc04 · 0:23 to 0:34 typography

Ross Cameron of Warrior Trading tells beginners to "learn a strategy that is proven profitable by someone else even if there's no guarantee it'll work for you".

Visual. Quote card: quoted words only; 'no guarantee it'll work for you' dims slightly as it is spoken.

On screen. "learn a strategy that is proven profitable by someone else even if there's no guarantee it'll work for you"

Cite. Ross Cameron, Warrior Trading

5. sc05 · 0:34 to 0:44 typography

Another channel, RP Profits, is blunter: "The strategy is real. The math is real, and there's people using it right now to make money."

Visual. Quote card: quoted words only, 'The math is real' held in accent colour.

On screen. "The strategy is real. The math is real, and there's people using it right now to make money."

Cite. RP Profits, YouTube

6. sc06 · 0:44 to 0:52 typography

Yet the Warrior Trading blog itself carries the line "Trading is risky, and most day traders lose money."

Visual. Quote card: quoted words only; 'most day traders lose money' turns amber as it is spoken.

On screen. "Trading is risky, and most day traders lose money."

Cite. Warrior Trading blog

7. sc07 · 0:52 to 1:06 document-excerpt

The Brazilian study followed people who began day trading in the country's equity futures market between 2013 and 2015, and sorted them by how many days they kept at it.

Visual. The study's abstract, the line about who it observed highlighted.

Cite. Chague et al., Brazil day-trader study

8. sc08 · 1:06 to 1:16 data-chart

Of those who tried it for a single day, 29.8 percent made a net profit, and the share fell at every step after that.

Visual. Horizontal bars, one per group by days traded, top to bottom from one day to more than 300; the first bar lands on '29.8 percent', the rest shrink in sequence on 'fell at every step'.

one day29.8%29.8percentBrazil day-trader study (Chague et al.), lines 162-L178
2 to 50 days15.5%15.5percentBrazil day-trader study (Chague et al.), lines 162-L178
51 to 100 days8.9%8.9percentBrazil day-trader study (Chague et al.), lines 162-L178
101 to 200 days6.8%6.8percentBrazil day-trader study (Chague et al.), lines 162-L178
201 to 300 days5.4%5.4percentBrazil day-trader study (Chague et al.), lines 162-L178
more than 300 days3.0%3percentBrazil day-trader study (Chague et al.), lines 162-L178

Cite. Chague et al., new day traders in Brazil by days traded

9. sc09 · 1:16 to 1:23 document-excerpt

The authors compare it to roulette, where the more rounds people play, the fewer come out ahead.

Visual. The study passage with the roulette comparison highlighted.

Cite. Chague et al., Brazil day-trader study

10. sc10 · 1:23 to 1:35 data-chart

Of the 1,551 who kept going for more than 300 days, 97 percent lost money after fees, and only 47 came out ahead.

Visual. Three tiles build one by one as spoken: 1,551 who kept going, 97% lost after fees, 47 came out ahead.

kept going1,5511551countBrazil day-trader study (Chague et al.), lines 394-L404
lost money after fees97%97percentBrazil day-trader study (Chague et al.), lines 394-L404
came out ahead4747countBrazil day-trader study (Chague et al.), lines 219-L229

Cite. Chague et al., 1,551 persistent day traders

11. sc11 · 1:35 to 1:43 data-chart

Only 17 earned more than Brazil's minimum wage, and the single best averaged 310 dollars a day.

Visual. Two tiles: 17 above minimum wage, then $310 a day for the single best.

earned more than minimum wage1717countBrazil day-trader study (Chague et al.), lines 219-L229
best trader's average per dayUS$ 310310usdBrazil day-trader study (Chague et al.), lines 219-L229

Cite. Chague et al., earnings of persistent traders

12. sc12 · 1:43 to 1:54 data-chart

And the handful who beat a bank teller's starting pay got there on a roller coaster, their daily results swinging by hundreds to thousands of dollars.

Visual. Two tiles for the range of daily swings among the eight who beat a bank teller's pay: lowest and highest standard deviation.

smallest swingUS$ 632632usdBrazil day-trader study (Chague et al.), lines 219-L229
largest swingUS$ 3,3083308usdBrazil day-trader study (Chague et al.), lines 219-L229

Cite. Chague et al., volatility of the top earners

13. sc13 · 1:54 to 1:59 typography

Did the ones who stayed at least get better with practice?

Visual. The question types on.

On screen. Did the ones who stayed get better with practice?

14. sc14 · 1:59 to 2:03 document-excerpt

The study found no evidence that they learned.

Visual. The abstract with the no-learning finding highlighted.

Cite. Chague et al., Brazil day-trader study

15. sc15 · 2:03 to 2:13 document-excerpt

A second study, of individual investors who day traded in Taiwan from 1992 to 2006, found the vast majority of them unprofitable.

Visual. The Taiwan study abstract, 'the vast majority of day traders are unprofitable' highlighted.

Cite. Barber et al., Taiwan day traders 1992 to 2006

16. sc16 · 2:13 to 2:27 data-chart

Taken as a group, they lost 7 basis points a day before costs, where a basis point is a hundredth of a percent, and trading costs more than tripled that loss, to 23.9.

Visual. Two tiles: 7 basis points a day before costs, then 23.9 after costs, the second tile visibly larger.

before costs7 basis points7countTaiwan day-trader study (Barber et al.), lines 476-L482
after trading costs23.9 basis points23.9countTaiwan day-trader study (Barber et al.), lines 476-L482

Cite. Barber et al., aggregate day-trader returns

17. sc17 · 2:27 to 2:31 typography

So is anyone reliably good at this?

Visual. The question types on.

On screen. So is anyone reliably good at this?

18. sc18 · 2:31 to 2:44 document-excerpt

A few are: in Taiwan, traders who had already been profitable, with more than 40 days of day trading in the past year, went on to earn more than their trading costs.

Visual. The Taiwan passage, the finding on experienced profitable traders highlighted.

Cite. Barber et al., persistence of profitability

19. sc19 · 2:44 to 2:52 data-chart

But those predictably profitable traders made up less than 3 percent of all day traders on an average day.

Visual. A 10 by 10 waffle; fewer than 3 squares light up in accent colour, the rest stay grey.

predictably profitableless than 3%lt 3percentTaiwan day-trader study (Barber et al.), lines 598-L621

Cite. Barber et al., predictably profitable traders

20. sc20 · 2:52 to 3:03 typography

Ross Cameron names one reason the rest struggle: "when you trade against the high frequency trading algorithms, trading large caps, you really don't have a good edge".

Visual. Quote card: quoted words only, 'you really don't have a good edge' in accent colour.

On screen. "when you trade against the high frequency trading algorithms, trading large caps, you really don't have a good edge"

Cite. Ross Cameron, Warrior Trading

21. sc21 · 3:03 to 3:17 data-chart

The Brazilian futures data point the same way in a different market: when high-frequency traders' share of deals rose by 10 percent, individuals' average loss was 19 percent higher.

Visual. Two tiles: '+10%' share of deals by high-frequency traders, then '19%' higher average loss for individuals, joined by an arrow.

rise in high-frequency traders' share of deals10%10percentBrazil day-trader study (Chague et al.), lines 384-L393
higher average loss for individuals19%19percentBrazil day-trader study (Chague et al.), lines 384-L393

Cite. Chague et al., high-frequency traders and individual losses

22. sc22 · 3:17 to 3:37 typography

So yes: in both studies most people lost, and in Brazil the longer they kept at it, the worse their odds of being ahead. Some people do beat the odds, and in Taiwan the ones who had been winning tended to keep winning, but they were a sliver of everyone who tried.

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On screen. In both studies, most people lost / Some beat the odds, a sliver of everyone who tried

Cite. Chague et al., Brazil day-trader studyBarber et al., Taiwan day-trader study

23. sc23 · 3:37 to 4:02 typography

Both studies looked at other markets and other years than today's American stock market, so they give the odds there, not a law for every market. What these counts can't do is check any one trader's month: a screenshot of a small account turned into a big one is neither confirmed nor ruled out by a tally of everyone who tried.

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On screen. Other markets and other years / Neither confirmed nor ruled out: one trader's month

24. sc24 · 4:02 to 4:24 typography

If someone sells you a strategy as consistent, ask for audited results across every account and every month, not the best screenshot. And if you try it anyway, put in only what you can afford to lose, and judge yourself by your results after fees, not by your best day.

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On screen. Ask for audited results across every account and every month / Only what you can afford to lose; judge by results after fees