A short position is a holding that gains value when a price falls, which in a binary event market you usually take by buying the opposing side of a contract rather than by borrowing and selling.
Last reviewed 20 July 2025 · Educational, not advice
A short position is the mirror image of a long position. If you are long, you gain when the price rises, and if you are short, you gain when the price falls. The word comes from stock and futures trading, where an investor borrows an asset, sells it, and hopes to buy it back cheaper later. In a prediction market the same idea applies, but the way you put it on is usually different, because these markets are built from binary contracts that settle at one dollar or zero rather than from assets you can borrow.
On most event market venues you express a short view simply by buying the other side of the question. Every market has a Yes side and a No side, and the two prices add up to about one dollar before fees. If you think the Yes price is too high, you do not need to borrow anything, you just buy the No contract. Buying No profits if the event does not happen, which gives you the same downward exposure as being short the Yes contract. Some venues also let you sell a contract you already hold, closing or reversing a position, but the buy the other side route is the common way to go short in these markets.
This structure has an important consequence for risk. When you short a share, your possible loss is open ended, because a price can keep rising with no ceiling. In a binary event market both sides are capped. A contract settles at one dollar if its side wins and zero if it loses, so the most you can lose on a Yes or a No contract is what you paid for it. That makes the maximum loss on a short view in these markets defined in advance, unlike a classic short sale. It does not make the position safe, only bounded. You should still check how a specific venue structures positions, since designs vary.
People use short positions to express a view that something is overpriced or to hedge an existing holding, taking the other side to offset risk. None of that changes the basic caution. The price can move against you before resolution, a market can be thin and hard to exit, and a confident short can still be wrong. A short position only reflects one view that a price may fall. It says nothing certain about the outcome, and we never name a contract to trade or a side to take.
Suppose the Yes side of a market trades at seventy cents, so you think it is too high. Rather than borrowing anything, you buy the No side at thirty cents. If the event does not happen, your No contract settles at one dollar, a gain of seventy cents per contract before fees. If the event does happen, the No contract settles at zero and you lose the thirty cents you paid. Your downside is fixed at the thirty cents staked, and your upside is the seventy cents to settlement, the bounded shape of a short view in a binary market.
Illustrative only. Numbers are examples, not a quote or a prediction, and exclude fees.
A bounded loss is still a loss, and a short view can be wrong. The price can run against you before resolution and a thin market can be hard to exit. Taking the other side is not a hedge against being mistaken. Stake only what you can afford to lose, never to chase a loss, and never on borrowed money. If it stops feeling like a free choice, step back. In the United States you can call or text the helpline on 1-800-GAMBLER or visit ncpgambling.org.
It is a position that gains value when a price falls, the opposite of a long position. In a binary event market you usually take that view by buying the opposing side of the contract rather than by borrowing and selling, which is how shorting works in stock markets.
On most prediction market venues you express a short view by buying the No side instead of the Yes side. Buying No at a given price profits if the event does not happen, which is the same exposure as being short the Yes contract. Some venues also let you sell a contract you hold.
In a binary market both sides are capped, since each contract settles at one dollar or zero. The most you can lose on either side is what you paid. That differs from short selling shares, where losses can in theory exceed the original stake. Always check how a specific venue structures positions.
No. A short position only reflects one view that a price may fall, and the market can move against you. It says nothing certain about the outcome, and we never name a contract to trade or a side to take.
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