Guides & Market Intelligence
Prediction market strategies, platform deep-dives, and data-driven analysis to sharpen your edge.
Best API for Prediction Markets in 2026: Prediction Hunt vs Polymarket vs Kalshi vs Opinion vs Predict.fun
Comparing the best prediction market data APIs: Prediction Hunt, Polymarket CLOB, Kalshi REST, Opinion, and Predict.fun. Rate limits, authentication, cross-platform coverage, and which API to build on for bots, dashboards, and research.
How to Build a Prediction Market Trading Bot: A Practical API Guide
A technical walkthrough of the APIs, SDKs, strategies, and hard-earned lessons behind building automated trading systems for prediction markets — from your first API call to a working bot.
Position Sizing in Prediction Markets: The Kelly Criterion Guide
The Kelly Criterion, fractional Kelly, correlation risk, and why most prediction market traders blow up not because they're wrong — but because they bet too much when they're right.
Polymarket Fees Explained: Every Cost You'll Pay in 2026 (And How to Minimize Them)
Polymarket now charges taker fees on every category: Crypto 1.80%, Sports 0.75%, Politics 1.00%, Finance 1.00%, Economics 1.50%, Culture 1.25%. US traders pay a flat 0.30%. Maker orders (limit orders) are still free. Here's the full 2026 fee breakdown and how to minimize costs.
Is Insider Trading on Prediction Markets Illegal? What Kalshi and Polymarket Traders Need to Know
A Kalshi trader was fined $20,000 for insider trading in 2026. Israeli authorities arrested bettors over Iran military bets. Here's where the legal line actually is.
Prediction Market Parlays: How Kalshi Combos Work and Why They Beat Sportsbook Parlays
Kalshi lets you combine multiple event contracts into a single parlay. Here's the math behind combos, when they give you better prices, and when they're a trap.
Do You Owe Taxes on Polymarket Winnings? What the IRS Actually Requires (2026)
Yes — prediction market profits are taxable income. Here's exactly what Polymarket and Kalshi traders owe, what counts as a deductible loss, and how to file without overpaying.
Prediction Markets vs. Sportsbooks: Why Bettors Are Leaving DraftKings for Kalshi
DraftKings charges 4.5% vig on every bet. Kalshi charges 1-2%. Here is why sharp sports bettors are switching to prediction markets in 2026.
What is a Walkover in Tennis?
Walkovers explained: definition, differences vs. retirement/default, implications and betting rules.
Alt Receiving Yards: What It Means and How to Use It
A practical guide to alternate receiving yards: how they work, risks, and strategies.
What Is Reverse Line Movement in Online Betting?
Reverse line movement (RLM) explained: why lines move against public betting, how to spot it early, and when to use it.
Polymarket vs Kalshi Fees: Which Platform Takes Less of Your Winnings?
Polymarket now charges category-based fees up to 1.8%. Kalshi charges up to 1.75%. Opinion has a $0.25 minimum. See the full 2026 fee breakdown with real dollar examples.
Is Kalshi Legit?
A deep dive into Kalshi's regulation, legal risks, and user experience.
How to Check for Arbitrage
Add outcomes and compare to $1; a quick checklist for real-world execution.
7 Best Political Betting Sites (2026): Kalshi vs Polymarket
We analyzed liquidity, fees, and legality for the 2026 midterms. See who wins the fee war between Kalshi, Polymarket, and PredictIt. Updated March 2026.
How to Read Prediction Market Prices (Without Getting Misled)
How to interpret market prices correctly: use midpoints, account for fees, and watch for uneven information.
The Mirage of "Free Money": A Story of Cross-Exchange Arbitrage
Why "free" arbitrage often isn't: contract mismatches, invisible costs, and execution risk.
Liquidity Lies: How Surface Prices Can Mislead Traders
Same price ≠ same trade: depth, spread, stability, and compounding slippage behind the quote.