How to choose a trader to copy is the one decision in this whole thing that actually matters, and most people get it backwards. They open a list of traders sorted by return, pick whoever’s up the most this month, and fund the account. I did almost exactly that in my second year of copy trading, before I caught the thing that would have cost me. This isn’t a piece about the mechanics of mirroring orders — I’ve covered that elsewhere. This is about the part that happens before you ever click follow, which is the part beginners skip, and it’s the actual answer to how to choose a trader to copy.
How to choose a trader to copy: start with the drawdown, not the return
A trader up 340% over eight weeks looks like the obvious pick. It almost never is. Eight weeks is not a track record, it’s a screenshot of a lucky stretch, and a lucky stretch tells you nothing about what happens to your account the first time the market turns against that person’s style. SPY had three separate pullbacks of 4% or more last year. A trader whose entire visible history sits inside one of the calm stretches between those pullbacks hasn’t been tested. You’re not copying their skill. You’re copying whatever they happened to be doing during a period when almost everything worked.
The number that matters more than the return is how long the return covers, and specifically whether that window includes a real drawdown. Not a single red day — an actual stretch, two or three weeks, where the account is down and staying down while the trader keeps trading through it. That’s the part of a track record that tells you something. Anyone can look good in a rally. What you’re actually trying to find out, before you risk money on someone, is what they do when the account is bleeding and the easy trades stopped showing up.
Position sizing consistency matters more than average trade quality
Here’s the trap: you can pull up a trader’s stats, see a respectable 58% win rate and a reasonable average win-to-loss ratio, and still be looking at an account that’s one bad week from getting wrecked. Averages hide sizing. A trader who runs 1% risk on ninety-five trades and then goes to 12% risk on five “high conviction” trades can post numbers that look completely normal in aggregate, because the average smooths right over the five trades that would have blown up your account if you’d been copying at the same proportional size during one of them.
What you want to see is a sizing pattern that barely moves. Same rough percentage of the account, trade after trade, whether the setup is a routine SPY call spread or something the trader is clearly excited about. The excitement is exactly when sizing discipline breaks for most people, and a trader who’s shown you five years of trading without ever once blowing past their normal size on a “this one’s different” trade has already demonstrated the hardest skill in this business. Consistency in size is a better predictor of whether an account survives than win rate ever will be. If you’re trying to learn how to choose a trader to copy from stats alone, sizing consistency is the stat most dashboards don’t show you, and it’s the one that matters most.
How to choose a trader to copy who actually fits your account size
Even a genuinely good trader can be the wrong one for you if the fit is off. A trader running size on thin, illiquid options — say a $180,000 account taking large positions in a name that only trades a few hundred contracts a day — is going to get fills that a $4,000 account copying proportionally will not get. The spread eats a bigger percentage of a small position than a large one, and on an illiquid strike that spread can be the difference between a trade that made money for the source trader and the same trade losing money for you once slippage is counted. Liquidity risk doesn’t scale down cleanly the way position size does.
The same goes for volatility tolerance. A trader who’s comfortable holding through a 15% intraday swing on a small-cap options position is running a style built for someone who can stomach watching their account number do that. If a 15% swing in either direction on a single position would make you close everything at the worst possible moment, that trader isn’t copyable for you even if their numbers are excellent, because the thing that breaks a copy relationship first is usually the follower panicking and turning it off mid-drawdown, not the strategy itself failing. Knowing how to choose a trader to copy means being honest about which of those two things describes you before you fund the account, not after your first losing week.
The trader I almost copied, and why I didn’t
Two years ago I was looking at a trader with a genuinely strong-looking six-month record — up 61%, decent win rate, and I was close to funding an account to follow him. Then I dug into the trade log instead of the summary number, and one trade accounted for almost the entire return: a single NVDA call position that ran from an $8 fill to $54 over three days during an earnings gap. Take that one trade out and the six months were up around 4%, mostly flat, with a few stretches of quiet losses mixed in.
That’s not a trader with a repeatable edge. That’s a trader who got aggressively sized into one earnings gamble that worked, and the summary stat had no way of showing me that the other 99% of his trading was mediocre. I asked myself the only question that mattered: if I’d been copying him proportionally before that NVDA trade, would I have trusted the rest of his sizing enough to still be in the account when it happened? The trade log said no — there were two smaller earnings plays earlier in the log, sized similarly aggressive, that had both lost. The NVDA trade wasn’t a pattern. It was a coin that landed heads once after landing tails twice. I didn’t fund the account, and I still think that trade log is the clearest example I have of what a red flag actually looks like in this business — not a bad number, a number that’s true but misleading. It’s also the moment I actually learned how to choose a trader to copy instead of just guessing at it.
Being copyable: what I do now that people copy me too
The honest flip side of all this is that I’m on the other end of it now. People follow my trades through Alertsify, which means my sizing decisions show up in someone else’s account, scaled to their balance, whether I think about that or not. It changed how I trade in a way I didn’t expect going in.
I keep my risk per trade in a tight band — I don’t let myself go from a routine 2% position to an 8% position just because a setup feels like a sure thing, because I’ve learned the hard way that “sure thing” is usually where the account damage happens. If I’m sizing up meaningfully, it’s a planned, gradual step tied to account performance, not a same-day decision made because SPY gapped in my favor and I got excited. No surprise oversized trades, no doubling down to fix a loss, no all-in bets I couldn’t explain the night before. Every trade I take is one I’d be fine with someone copying at the exact percentage I’m running, because someone actually is.
That’s the standard worth holding any trader to before you fund an account to follow them, which is the whole reason how to choose a trader to copy is a harder question than it looks. Not “did they make money” — plenty of people made money on one good trade and a lot of luck. The question is whether their sizing would still make sense to you on their worst week, not just their best trade. That’s the actual answer to how to choose a trader to copy — check whether their worst week would still make sense to you.
How to choose a trader to copy: the checklist
Here’s how to choose a trader to copy in practice. Pull the full trade history, not the summary card. Look for a stretch of at least a few months that includes a real losing period, and read how the trader sized positions during it — did the size stay steady, or did it swing wildly trying to recover. Then check whether the instruments they trade match what your account can actually get filled on; a strategy built around illiquid weekly options on a $150,000 account behaves differently once it’s scaled down to a $5,000 one. If a single outlier trade is propping up an otherwise average track record, that’s the tell. Learning how to choose a trader to copy comes down to reading past the headline return to the sizing pattern underneath it, because the sizing pattern is what determines whether your account survives long enough to see the good months. Most people never get this far — they answer how to choose a trader to copy with a return chart and stop there.
Where that leaves you
I still think about that NVDA trade log sometimes, mostly because it’s the clearest reminder I have that a good number and a good trader aren’t the same thing. The return told me nothing until I looked at what built it. If there’s one thing worth taking from all of this, it’s that how to choose a trader to copy is a question you answer with a trade log, not a leaderboard.
These days the trades in my account run through Alertsify’s execution tool — the part I control is which trader I follow and how I size myself relative to them, the part the tool handles is making sure the mirrored order actually lands the way it’s supposed to. If you want to see how the sizing and the trade history actually look before you fund anything:
Disclosure: that’s an affiliate link — I may earn a commission if you sign up for a paid plan, at no extra cost to you. There’s a free trial if you want to look around first.