How copy trading works (and why your results won't match the trader's)

Copy trading means automatically mirroring another trader's buys and sells. When they buy a token, you buy it too. When they sell, you sell. It sounds like a shortcut: find someone good, follow along, share in their wins. In practice it is more complicated, and being honest about why is the whole point of how DYOR presents it.

How it works mechanically

On Solana, every trade is a public transaction. A copy trading system watches the wallets you follow. When one of them swaps into a token, the system builds a matching swap for your wallet, signs it under the permissions you granted, and sends it to the network. On DYOR your wallet is self-custodial: the funds stay in your wallet, and copying happens only within the limits you set.

Those limits typically include:

• Size per trade: a fixed amount, or a percentage of the trader's size, capped at a maximum.
• Daily budget: the most you will spend copying in a day, across all traders.
• Token filters: for example skipping any token that fails the rug check or has very low liquidity.
• Slippage: the worst price move you will accept before a trade is skipped.

Why copiers usually do worse than the trader

This is the part most apps leave out.

You are always later

Your trade can only be sent after the trader's transaction is seen. In a thin memecoin, the trader's own buy pushes the price up, and so does every other copier's. By the time your order fills, you may be paying noticeably more than they did. On the way out, the same thing happens in reverse.

Followers can become exit liquidity

A trader with many copiers can buy a token, wait for copiers to pile in and push the price up, then sell into that demand. The trader profits; the copiers are left holding. DYOR flags traders when we detect this pattern in the last 30 days, under “dumped on followers”.

Different size, different outcome

If you copy with a different size, a different budget or different filters, you won't hold the same set of positions. Skipping one trade that happened to be the big winner can turn a profitable trader into a losing copy.

Fees add up

Every copied trade pays fees. Active traders can make dozens of trades a day; each one costs you a percentage. See fees explained for the numbers.

Why we rank by median copier P&L

Most leaderboards rank traders by their own profit. That tells you how the trader did, not how you would have done copying them. The DYOR leaderboard ranks by median copier P&L: the result of the person in the middle of everyone who copied that trader. Half did better, half did worse. It is a much more realistic picture, and it is often lower than the trader's own number, sometimes negative while the trader is positive.

How to copy more carefully

• Look at median copier P&L and the number of closed positions, not just the headline profit.
• Avoid traders flagged for dumping on followers.
• Start with a small per-trade size and a daily budget you would be fine losing.
• Turn on rug-check filters so you skip tokens that can't be sold or have unrevoked authorities.
• Review what you are actually copying. You can stop at any time.

The honest bottom line

Copy trading is a tool, not a strategy that guarantees anything. It lets you act on someone else's research faster than you could by hand. It does not give you their entry price, and past results don't predict future ones. Treat every copied position as money that could go to zero.