How Polymarket Leaderboards Get Gamed, and How to Read Them

Prediction-market leaderboards are marketing tools as much as scoreboards. They rank traders by profit or volume, and those rankings are easy to misread. A trader at the top of a volume leaderboard may be washing trades. A trader at the top of a profit leaderboard may be holding an unrealised position that could still go to zero.

None of this means every leaderboard trader is fake. It means the leaderboard is a starting point, not a due-diligence report.

How volume gets gamed

Wash trading is the practice of trading with yourself or with coordinated accounts to inflate volume. It can be used to farm rewards, attract copy traders, qualify for incentives or create the appearance of liquidity.

A 2025 Columbia study reported that a large share of Polymarket volume may be wash trading, and CoinDesk reported the finding as a caution for anyone using volume as a proxy for genuine activity. Fortune had reported similar concerns in 2024.

Wash trading is not victimless. It distorts the signal that other traders use to judge liquidity, and it can mislead people who copy a trader based on activity.

How profit gets inflated

There are four common ways a profit number can mislead.

Unrealised gains. A position marked at the current price is not cash. If the market reverses, the profit disappears. A leaderboard that includes open positions can show a paper profit that is never realised.

Concentration. A trader who bets everything on one market can show a huge return if it wins. The same strategy would have produced a total loss if it had lost. A single outcome is not a track record.

Multiple accounts. A trader can run several accounts, show the winner and hide the losers. Without a way to link accounts, the leaderboard cannot distinguish skill from survivorship.

Short history. A trader who joined during a lucky streak may look excellent for a few weeks. Six months of data is a minimum, and a full market cycle is better.

The trader evaluation guide explains how to check these factors.

What a good track record looks like

A credible record has five features:

• Closed positions. Realised profit is harder to fake than unrealised.
• Drawdown data. The worst peak-to-trough decline matters more than the best week.
• Consistency. Profitable months across different market conditions.
• Position sizing. A trader who risks 2% per trade is different from one who risks 50%.
• Transparency. A public profile with a verifiable history and a stated strategy.

The copy-trading risk controls article explains how to set limits even when the record looks good.

The 0.1% problem

A 2026 Wall Street Journal analysis found that about 0.1% of accounts captured roughly 67% of profits on prediction markets, while more than 70% of users lost money. That distribution is typical of gambling and trading, and it has a practical implication: the average leaderboard trader is not representative.

If you copy a top trader, you are copying someone in the extreme tail of the distribution. That does not mean they are skilled. It may mean they took risks that happened to pay off.

The is Polymarket profitable for beginners guide explains the base rates.

The airdrop incentive

Leaderboards become more gameable when a token or airdrop is expected. If activity is rewarded, users have an incentive to generate volume, open positions and create multiple accounts. That can inflate the metrics that other users rely on.

The 2026 POLY announcement gave farmers a reason to trade more. The points and airdrop article explains what is confirmed and what is speculation.

A leaderboard that does not adjust for wash trading or sybil accounts will reward the wrong behaviour. Users should assume that some of the activity they see is incentive-driven, not skill-driven.

How to verify a trader

A practical checklist:

1. Ask for the profile URL and the snapshot date.
2. Check the account age and trade history.
3. Look at closed positions and realised PnL.
4. Compare returns with drawdown.
5. Check whether the trader uses multiple accounts.
6. Read the strategy description. If there is none, assume there is no repeatable edge.
7. Paper-trade the strategy before committing capital.

The copy trading fees article explains why gross returns are not the same as net returns.

The platform's incentives

Leaderboards are good for engagement. They encourage competition, create social proof and drive volume. They are not designed to be audited financial statements.

That does not make the platforms dishonest. It means users should treat the leaderboard as advertising and do their own verification. The paid influencer scandal shows what happens when marketing outruns verification.

What the platform could do

A more honest leaderboard would rank traders by realised, risk-adjusted return over a full cycle, with drawdown and position concentration disclosed. It would separate market-making volume from directional trading. It would flag accounts that trade with themselves.

Some of those features exist in third-party analytics, but they are not the default. Until they are, the burden is on the user.

The bottom line

A leaderboard is a filter, not a recommendation. Use it to find candidates, then verify the record, the risk and the strategy. If a trader cannot explain how they make money, the honest answer is that you cannot know whether the returns will continue.

The copy-trading mistakes article lists the most common errors. Avoiding them is more valuable than finding the next top-ranked account.