Prediction Market Volume & Sharp Action

Overview

This pillar analyzes trading volume and liquidity on platforms like PredictIt and Polymarket to identify 'sharp action'. It detects informed trades that often precede shifts in polling data and public opinion, providing a critical time advantage.

What It Does

The pillar monitors real-time order books and trade volumes for specific political markets, focusing on congressional races. It flags unusually large trades or rapid shifts in liquidity that deviate from established patterns. The system then compares these market movements against statistical models like FiveThirtyEight to spot significant divergences, which can indicate new, unpriced information.

Why It Matters

Prediction markets aggregate information faster than traditional polls. By identifying professional flow, traders can anticipate market movements before they are widely recognized by the public or reflected in slower-moving data sources, creating a significant predictive edge.

How It Works

First, the system ingests live trade and order book data from major political prediction markets. Second, it establishes a baseline volume and liquidity profile for a given market, such as a specific Senate race. Third, it uses algorithms to detect anomalies, like single trades exceeding a certain size or a sudden surge in volume without a clear news catalyst. Finally, it quantifies the divergence from polling aggregates to generate a signal.

Methodology

Analysis is based on a 24-hour rolling volume average compared to the 7-day moving average. 'Sharp Action' is flagged when a single trade accounts for more than 15% of the 24-hour volume or when volume spikes more than 3 standard deviations above the 7-day mean. Divergence is calculated as the absolute difference between the market-implied probability and the FiveThirtyEight polling model probability.

Edge & Advantage

This pillar provides a real-time signal of informed trading, often revealing market-moving information hours or days before it appears in news cycles or polling updates.

Key Indicators

• Large Block Trades

  high

  Identifies single, significant trades that suggest action from an informed or heavily capitalized trader.

• Order Book Depth

  high

  Measures market liquidity and the potential price impact of large trades, indicating market stability and interest.

• Polling Model Divergence

  medium

  Highlights the gap between the market's price and statistical models, quantifying how much traders disagree with pollsters.

Data Sources

• PredictIt API

  Provides real-time and historical market data for US political prediction markets.

• Polymarket API

  Offers market data for a wide range of global events, often settled on the blockchain.

• FiveThirtyEight

  Provides polling-based statistical models for comparison against market-implied probabilities.

Example Questions This Pillar Answers

• → Will the Republican party win the Senate race in Arizona?
• → Will Candidate X's market price increase by more than 5 cents this week?
• → Which party will control the House of Representatives after the midterm elections?

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