A trader drops $400K on Yes. The price moves 19 cents in under an hour. You find out six hours later on Twitter, in a screenshot with no context.
Who was that? What's their record? Was it conviction backed by months of research, or a mistake that's about to unwind? Nobody can tell you. By the time you see the tweet, the edge is already gone.
That information gap costs real money. Today, it closes. 0xInsider is now open to everyone.
Every large trade, the second it happens
0xInsider streams every large trade from Polymarket and Kalshi in real time. Not a bot that posts screenshots. A terminal that shows money moving across prediction markets the moment it settles, with full context on every trade.
Each row shows the trader, their grade, the market, the size, the price. Click any name and you get the full profile: P&L history, win rate, strategy classification, risk metrics, category performance. Hours of blockchain research, compressed into one click.
Skill or luck? Now you can tell.
Polymarket ranks traders by profit. A trader who hit one lucky $5M bet outranks someone who's been consistently profitable across 200 markets. No risk adjustment. No strategy context.
Kalshi shows even less. Every trade is anonymous. No profiles. No history.
Neither platform answers the only question that matters when you see a large trade: should I pay attention to this trader, or ignore them?
Every trader on 0xInsider gets a grade from S to F across six risk-adjusted dimensions: profit magnitude, Sharpe ratio, capital efficiency, profit factor, max drawdown, and consistency.
S-grade traders average a 4.2% maximum drawdown. F-grades average 78.4%. That's the difference between risking 5 cents on every dollar and risking nearly everything. S-grades maintain profit factors above 30x. Their winners dwarf their losers by orders of magnitude.
Out of 4,356 graded traders, 3% earn an S. When one enters a market, it's signal. When several converge on the same side of the same market, you're watching consensus form among the most consistently profitable traders in prediction markets.
The signals bots miss entirely
A trade alert bot tells you someone bought $200K of Yes. End of message. No history, no track record. Was this trader's last five bets profitable, or did they blow up three times this month? The bot can't tell you.
Every trade on 0xInsider is attached to a full profile. Grade. Signal score. P&L curve. Strategy type. Risk metrics. You're not watching money move in a vacuum. You're seeing the track record behind it.
But the biggest edges aren't always the loudest trades. Some traders split $2M across hundreds of small orders over days. No single trade crosses a detection threshold. The aggregate is enormous, and completely invisible to every bot and alert service. Large Positions detects this hidden accumulation and surfaces it in a single row.
Who's at the top right now
RepTrump holds #1 with a 92.52 composite score. Eight markets, $7.53M in profit. FeatherLeather ranks second with the highest win rate in the top 5 at 72.2%. fengdubiying trades across 121 markets, the most diversified trader at this level by a wide margin.
PrincessCaro and BetTom42 tell a different story. Win rates of 27% and 23%. Both S-grade. Both up over $5.6M. They lose more often than they win, but when they win, their position sizing makes up for everything.
Same grade. Opposite strategies. The composite score captures what profit rankings can't: how the money was made, and whether the edge is repeatable.
Start free. Upgrade when it clicks.
The free tier is permanent. No time limit, no credit card. Full leaderboard with 18,895 trader profiles, grades, P&L charts, and heatmaps. The terminal feed runs on a 4-hour delay. Enough to see whether this changes how you trade.
Insider ($42/mo annual, $89/mo monthly) removes the delay. Real-time feed, signal scoring on every trade, insider radar, custom alerts, large positions, dataset exports, and the full analytics suite. One well-timed trade informed by a high-signal alert covers the cost for a year.
We built this because we needed it. Now it's yours.