MetaWhale monitors every on-chain transaction across 6 major categories in real time, flags anomalous large-value activity with statistical precision, and delivers actionable analytics to your dashboard.
Every transaction is scored across four independent statistical models. Only the truly anomalous surface.
Measures how many standard deviations a transaction is above the market average. Z > 3.0ฯ means the transaction is in the 99.7th percentile.
Computes exact percentile against all historical transactions for that market. Flags top 1% activity regardless of distribution shape.
Detects when an address makes unusually concentrated transactions โ more than 60% of total activity in a single market signals informed participation.
Identifies sudden 5x+ increases in transaction frequency within an hour, catching coordinated activity before the broader market reacts.
Click any address to see full transaction history, volume profile, severity breakdown, and average Z-score. Identify the experienced participants.
Download raw data for your own models. Premium subscribers get full 30-day history with all fields for independent analysis.
Polymarket is the world's largest decentralized prediction market platform. It allows users to trade on the outcomes of real-world events โ elections, sports, weather, crypto prices, and more โ using cryptocurrency (USDC on Polygon). Founded in 2020 by Shayne Coplan, it has processed over $10 billion in trading volume and is regulated by the CFTC.
Each market asks a binary question (e.g., "Will Seoul's temperature exceed 28ยฐC?"). Traders buy YES or NO shares at prices between $0.00 and $1.00. The price reflects the crowd's estimated probability of the outcome. If you buy YES at $0.65 and the event happens, you receive $1.00 per share โ a $0.35 profit. If it doesn't happen, you lose your stake. This is why knowing whether a whale bought YES or NO is critical: buying YES (like a call option) signals bullish conviction; selling YES or buying NO (like a put) signals bearish conviction.
Unlike a sportsbook which sets odds, Polymarket users set the prices themselves through supply and demand. Prices continuously update as new information emerges, making prediction markets a real-time probabilistic forecasting tool. All trades are on-chain and publicly verifiable via the Polygon blockchain โ no hidden order books, no house edge.
Every trade on Polymarket has a side (BUY or SELL) and an outcome (YES or NO). Understanding the full position reveals the trader's directional conviction. A $50,000 BUY of YES shares on "Trump wins" is a bullish bet. A $50,000 BUY of NO shares on the same market is bearish โ functionally equivalent to shorting. MetaWhale tracks both the side and outcome columns so you can accurately interpret whale positioning, similar to distinguishing calls from puts in options markets.
Yes. Polymarket operates under a CFTC regulatory framework and is accessible in most jurisdictions worldwide. It uses USDC, a regulated stablecoin, for all trading. U.S. users are restricted from certain markets under a CFTC consent order. Polymarket does not offer leveraged trading, derivatives, or securities โ it is a pure information markets platform.
MetaWhale monitors every on-chain Polymarket transaction in real time across 6 major categories. Each trade is run through a 4-layer statistical anomaly detection engine: Z-score analysis (standard deviations above market mean), percentile ranking (top 1% activity), concentration detection (address-level pattern analysis), and spike detection (sudden volume surges). Only trades flagged as statistically anomalous are displayed in the dashboard. MetaWhale is a data analytics tool โ it does not provide financial advice or trading recommendations.
Polymarket: polymarket.com ยท
API Documentation ยท
GitHub
Polygon Blockchain:
PolygonScan โ verify any trade on-chain
CFTC Regulation:
CFTC Consent Order (2022)
Prediction Market Research:
SSRN Academic Paper ยท
Wikipedia
Our detection engine analyzes 600+ markets across 6 categories every 10 minutes, processing thousands of transactions through four statistical models.
Fetch transaction data for 100+ active public markets via open APIs
Calculate per-market mean, std dev, percentiles, and address concentration
Run 4-layer composite scoring on every transaction to flag unusual activity
Push to dashboard, Telegram alerts, and CSV export within seconds
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