Hedging, Greening Out & Exposure Delta
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Hedging, Greening Out & Exposure Delta
What is Hedging?
Hedging (also called "greening out" or "trading") is a strategy where you place opposing bets on the same market to lock in a guaranteed profit — no matter which team wins.
This is the same concept as hedging in the stock market. Buy a stock, wait for the price to go up, then sell it. In exchange betting, you back at one price, wait for odds to change, then lay at a different price.
How Does It Work?
The key idea is: odds change during a match. If you bet early at good odds and the situation changes, you can bet the opposite side at the new odds and lock in profit on both outcomes.
Real Example: User 77's Trade on Gamting Exchange
Match: India vs Australia — Market: Winner (incl. super over)
User 77 placed 3 lay bets at different times as odds changed during the match:
| # | Bet Type | Team | Odds | Stake | Liability |
|---|---|---|---|---|---|
| 1 | Lay | Australia | 1.27 | 15,000 | 4,050 |
| 2 | Lay | India | 1.38 | 12,000 | 4,560 |
| 3 | Lay | India | 1.47 | 600 | 282 |
What Happens When the Match Ends?
| Outcome | Bet 1 (Lay Aus) | Bet 2 (Lay Ind) | Bet 3 (Lay Ind) | Net Result |
|---|---|---|---|---|
| Australia Wins | -4,050 (pay liability) | +12,000 (win stake) | +600 (win stake) | +8,550 PROFIT |
| India Wins | +15,000 (win stake) | -4,560 (pay liability) | -282 (pay liability) | +10,158 PROFIT |
Result: User 77 wins between +8,550 and +10,158 no matter who wins. This is a guaranteed profit — a perfect hedge!
What is Exposure Delta?
Exposure Delta is the change in your maximum possible loss when you place a new bet on the same market. The exchange does not hold your full stake for every bet — it only holds the net exposure (your worst-case loss across all outcomes).
How Exposure Changed in the Example Above
| When | Action | Wallet Transaction | Reason |
|---|---|---|---|
| Bet 1 placed | Lay Australia @ 1.27, stake 15,000 | -4,050 debited (held as exposure) | Liability if Australia wins = 15,000 x 0.27 = 4,050 |
| Bet 2 placed | Lay India @ 1.38, stake 12,000 | +4,050 credited back | Now both sides are covered. Worst-case loss reduced to ZERO. Held funds returned! |
| Bet 3 placed | Lay India @ 1.47, stake 600 | 0 (no change) | Already fully hedged. No additional exposure needed. |
Notice: The exchange did NOT take 15,000 + 12,000 + 600 = 27,600 from the wallet. It only ever held 4,050 at most, and then returned it when the position was hedged. This is the power of exposure-based accounting.
Why Does the Exchange Work This Way?
- Efficiency: Your money is not locked up unnecessarily. You only put up what you can actually lose.
- Trading: This allows you to trade positions like a stock market. Buy low, sell high — or in betting terms, back at high odds and lay at low odds.
- All legitimate exchanges work this way — Betfair, Smarkets, Betdaq, and Gamting Exchange all use this same exposure-based model.
Simple Way to Think About It
Exposure Delta = New Maximum Loss − Old Maximum Loss
- If the delta is positive: exchange debits your wallet (holds more money)
- If the delta is negative: exchange credits your wallet (returns money)
- If the delta is zero: no wallet change needed
Key takeaway: Hedging lets you guarantee profit by betting both sides. The exchange only holds your net exposure, not individual stakes. When your bets offset each other, the exchange returns your held funds.
