Then I'd actually look at their history and… it was almost never impressive. Usually it was one guy who dumped fifty grand on a market already sitting at 90¢, won, and has been parked at the top of the rankings ever since. Or someone running an arbitrage thing that nets basically nothing per trade but looks huge at volume. Or just a whale — bad hit rate, but betting so big the profit number looks great anyway.

The problem is the leaderboard ranks by profit. And profit mostly tells you who had the biggest bankroll or who got lucky once. It tells you almost nothing about whether the person can actually predict anything — which is the only thing I care about if I'm going to copy them.

So I built my own version. It ranks traders by how good their forecasts actually are, not by how much money they made. Here's how it works and how to use it.

The thing nobody's leaderboard measures

Picture two people.

One bets $100k on a 90¢ market — basically a sure thing — and makes eleven grand. The other bets $200 on a 15¢ underdog nobody believed in, and it hits. They make a bit over a thousand bucks.

On a profit leaderboard, the first guy wins by a mile. But he didn't really do anything — he bought a near-certainty with a lot of money. The second person was right when the whole market was wrong. That's the skill. That's who I want to follow.

So instead of ranking by dollars, I gave every trader an Elo rating — same idea as chess, or ranked in a video game.

How the rating works (without the math headache)

Every bet gets scored against the market itself. The price someone buys at is the market's opinion — buy at 20¢ and the market is saying "20% chance." Then the market resolves, and I compare what happened to what the market expected.

Get an underdog right and your rating jumps, because you beat the odds by a lot. Get an obvious favorite right and you barely move — everyone saw that coming. Whiff on a 90¢ "sure thing" and you take a real hit, because you were confidently wrong.

Two things I deliberately baked in:

Bet size doesn't count. Someone quietly running $500 with a sharp eye ranks above a whale spraying millions with a mediocre record. It's about being right, not being rich.

You can't top the board while losing money. This one bit me during testing. Because the rating measures accuracy, I found a wallet with a 63% win rate buying underdogs at ~30¢ — genuinely great forecasting, top-tier Elo. Except its P&L was negative. It won tons of small bets and gave it all back on the big misses. Impressive on paper, useless to copy. So now anyone in the red on realized returns gets capped out of the top no matter how accurate they look. If copying you loses money, you don't belong at the top.

The final number is just 1 to 100. Green is good (71+), yellow is decent, red means skip it — even if their profit number looks shiny.

How to actually use it

Open it and it's already sorted by Elo, best first. The colors do most of the work — green ones are your copy candidates, red ones you ignore.

But don't stop at the Elo. Glance at the other columns too — win rate, ROI, how often they trade, how long they've been around. What you want is boring in a good way: high Elo, positive ROI, still active this week. That combination is rare, and it's the whole point.

And please, verify before you trust anything. Click a trader and it opens their real Polymarket profile. Every trade, every entry price, every result is right there on-chain. I built the ranking and I'd still tell you to check it yourself.

The list refreshes daily, throws out bots and arbitrage accounts and the people who only pile in once a market's basically decided, and it keeps picking up new active traders over time.

What surprised me in the data

Once I ranked by skill instead of money, the top of the board looked completely different. A bunch of the huge-profit wallets dropped to the middle — turns out they bet big, not well.

Maybe one in five of the "top" wallets actually have a negative edge once you account for the odds they were getting. They look fine if you just glance at the profit column. The math says otherwise.

And the genuinely good forecasters tend to live in the same kinds of markets — a lot of them grind short-window crypto markets over and over. Which makes sense, honestly. Repeatable edge shows up in repeatable markets.

Finding the trader is only half of it

Here's the annoying part. Spotting a good forecaster doesn't help much if you can't act fast. These markets move, and copying a great call ten minutes late just means you're buying their exit at a worse price.

That's the actual thing I'm building — Shadower. Once you've found someone on the leaderboard, it mirrors their trades to your own account automatically, on your terms — your bet size, your price limits, your caps. Your key only ever places bets, never touches withdrawals.

But the leaderboard stands on its own, and it's free. Use it for the question the profit leaderboard could never answer: not who made the most, but who's actually good.

👉 shadower.trade/traders

Prediction markets are risky and this isn't financial advice. Do your own homework, and check every trader on-chain before you copy a single bet.