Trade with an edge
Prediction market strategies
Picking winners is the easy part. The traders who last are the ones who size positions sensibly, find genuine mispricings, and avoid the mistakes that quietly drain accounts. Here is the playbook.
A prediction-market edge comes from two things: being right more often than the price implies, and not giving back your winnings through poor risk management. Most beginners obsess over the first and ignore the second. This pillar treats them in the right order — discipline first, then edge — with a dedicated guide for each.
The playbook
Five guides that separate winners from gamblers
Read them in order if you are starting out. Each links to a full, worked-through guide.
Bankroll management
The discipline that keeps you in the game: setting a bankroll, capping each position at 1–5%, and surviving the losing runs that wipe out oversized accounts.
Position sizing & Kelly
How much to bet when you have an edge. The Kelly criterion in a clean form — (q−p)÷(1−p) — a worked example, and why almost everyone uses a fraction of it.
Finding value
An edge means buying when the true probability beats the price. How to calculate expected value (q−p), where real mispricings come from, and how to tell an edge from a hunch.
Arbitrage & no-vig
When the same event is priced differently across venues, there can be near-riskless profit. Cross-platform and complementary-contract arbitrage — and the frictions that bite.
Mistakes to avoid
Most accounts are lost the same handful of ways — oversizing, chasing losses, ignoring fees, misreading resolution. The fixes, plus a pre-trade checklist.
Hedging strategies
You don’t have to ride every position to the end. When and why to hedge, full versus partial, and the costs to weigh before you do.
Risk management
Position sizing is only part of it. Managing correlation, diversifying across uncorrelated markets, and setting drawdown limits so a losing streak never becomes a blow-up.
Trading psychology
Most edges are lost to emotion, not analysis. The biases that cost you money, how to build discipline, and how to avoid tilt.
Record keeping
You can’t improve what you don’t measure. What to log for every trade, how to tell skill from luck, and how to find your leaks.
Trading politics with polls
How to use polling data to spot mispriced political markets — reading averages, timing the move, and the pitfalls that catch people out.
Market making & rebates
Be the one offering the price. Capturing the spread, earning maker rebates, and managing the inventory risk that makes it hard.
Run the numbers
Every sizing and value decision starts by turning a price into a probability and a payoff. Use the profit calculator and odds converter as you work through the guides.
Putting it together
The durable formula is unglamorous: protect your bankroll, size to your edge, trade only when you genuinely think the price is wrong, and keep your emotions out of it. Do that consistently and the wins take care of themselves. New to the foundations? Start with what prediction markets are and the getting-started guide, then put your edge to work in a specific market category.
No strategy removes the possibility of loss — contracts can and do settle worthless. Strategy improves your odds over time; it never guarantees an outcome. Only ever trade money you can afford to lose. In the US, support is available at 1-800-GAMBLER.
Frequently asked questions
Can you make a living trading prediction markets?
It's very difficult and not something to count on. Some skilled traders profit consistently, but most don't. Profit requires a genuine, repeatable edge plus disciplined risk management — and even then, losses are part of the process.
How much of my bankroll should I risk per market?
A common conservative guideline is 1–5% of your bankroll on any single market, so no one outcome can do serious damage. Decide your cap before you trade, not in the moment.
What is the Kelly criterion?
A formula that sizes a position according to your edge and the odds — bet more when your advantage is large, less when it's marginal. Most traders use a fractional version (half or quarter Kelly) to reduce volatility, since probability estimates are never perfect.
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