A crude oil future and an event contract on crude oil can watch the exact same barrel and pay you in two completely different geometries, and that geometry is the whole event contracts vs futures distinction. A future settles on a continuous price and pays by the point: every dollar the market moves changes your account by a fixed amount, in either direction, with no ceiling and no floor. An event contract settles on a yes-or-no question and pays exactly $1 or exactly $0, nothing in between. Neither shape is better. But they reward different kinds of being right, they punish different kinds of being wrong, and they demand two different answers to the only question that ultimately protects a trader: how big should this position be? Before this piece is over, a trader who calls the direction correctly will lose every cent of one position while the other profits, on the same move in the same market, and that example is the hinge the whole comparison swings on.
The Quick Answer
A future or an option settles against a continuous price, so your profit scales with how far the market moves; an event contract settles a yes-or-no question at $1 or $0, so your profit depends only on which side of a line the outcome lands. That single difference changes everything about position sizing: continuous instruments are sized around exposure per point and margin, while binary contracts are sized around the full, known-in-advance loss, because being close pays nothing. The worked example, the sizing arithmetic, and where each instrument actually fits are below.
A Future Pays By The Point; An Event Contract Pays A Dollar Or Nothing
Start with the future, since that is the instrument the reader coming from traditional markets already knows. Buy a future and your profit and loss is a straight line through the current price: each point above your entry adds the same amount, each point below subtracts it. Losses are not capped at your initial outlay; the position is marked to market daily, margin is posted against it, and a move against you can require more capital or force a liquidation. The payoff is continuous because the settlement variable is continuous. There is no line in the sand, only a slope.
An event contract replaces the slope with a step. The contract names a threshold and asks a yes-or-no question about it, and at settlement it is worth $1 if the answer is yes and $0 if it is no. On a CFTC-regulated exchange like Kalshi, these trade in cents, and the price reads as a probability: a contract at 25 cents is the market calling its question a 25% shot. You can take either side, and your worst case is defined the moment you enter. A buyer at 25 cents can never lose more than 25 cents per contract; a seller collecting 25 cents can never lose more than the remaining 75. There are no margin calls waiting on the other side of a bad night, because the full amount at risk is posted up front.
The price-to-probability translation is worth internalizing, because it is the piece a futures trader has no muscle memory for:
| Contract Price | Implied probability | Buyer's max loss | Buyer's max win |
|---|---|---|---|
| 5¢ | 5% | 5¢ | 95¢ |
| 25¢ | 25% | 25¢ | 75¢ |
| 50¢ | 50% | 50¢ | 50¢ |
| 75¢ | 75% | 75¢ | 25¢ |
| 95¢ | 95% | 95¢ | 5¢ |
The row that trips up newcomers is the last one. Buying a 95-cent contract means risking 95 cents to win 5, the same lopsided shape a sportsbook expresses as a heavy minus number, and the fact that it wins 95% of the time when fairly priced does not change what the one loss in twenty costs. Every row is the same statement read in both directions: the price is the probability, and the two payoffs always sum to the same dollar.
The two instruments can even share an underlying. Kalshi runs daily ladders on commodities whose reference prices come from futures markets, and its economic contracts settle on the same data releases that whip rate futures around. Same news, same numbers. Different geometry. Which is exactly what makes the promised example so clean.
A Worked Example: The Same Move, Two Different Outcomes
The cleanest way to see the event contract vs future difference is to run one move through both instruments. Take a crude oil future trading at $80 and, beside it, an event contract asking whether the price finishes above $85 by a set date, trading at 25 cents. A trader buys both, and the market obliges with a rally. Here is how the two positions pay across a range of finishing prices, per barrel and per contract:
| Final Price | Long future from $80 (per barrel) | "Above $85" contract bought at 25¢ |
|---|---|---|
| $78.00 | −$2.00 | settles $0: −25¢ |
| $84.50 | +$4.50 | settles $0: −25¢ |
| $85.50 | +$5.50 | settles $1: +75¢ |
| $95.00 | +$15.00 | settles $1: +75¢ |
The rows that matter are the middle two. Between $84.50 and $85.50 the future barely notices: one extra dollar of profit on a move it was already paying for, a rounding error on the position. The event contract experiences those same two finishing prices as opposite universes. At $84.50 the rally was real, the direction call was right, and the contract still settles at zero, a total loss. At $85.50 it pays in full. Fifty cents of underlying is the difference between losing everything and collecting the maximum, because a binary contract does not pay you for being close. It pays you for being on the correct side of one line. Meanwhile the top and bottom rows make the mirror-image point: past the threshold, the contract is indifferent to magnitude. The future keeps earning all the way to $95; the contract holder was paid identically at $85.50.
That is the concrete meaning of binary versus continuous: a future rewards distance, an event contract rewards side. Everything else in this comparison, especially the sizing, falls out of that sentence.
Where Options Sit: A Kink Instead Of A Step
Options are the halfway house, and worth a paragraph precisely because the reader coming from that world will feel a familiarity that is only partial. A call option struck at $85 pays nothing below the strike and then, setting aside the premium paid for it, dollar-for-dollar above it: a kinked payoff, flat then sloped. It shares the event contract's threshold, but past the threshold it behaves like the future, earning with distance. The event contract flattens both sides of the line: flat below, flat above, with a single step at the threshold. Traders who know the options market will recognize that shape as a binary option, and the payoff logic is the same; the venue is different, in that Kalshi's version trades on a regulated exchange order book where positions are fully collateralized and can be exited before settlement.
The practical consequence of the missing slope: an option buyer who is right in a big way gets paid in a big way, and prices that upside into the premium. The event-contract buyer who is right in a big way gets the same dollar as the one right by an inch. If your view is about magnitude, the step function is the wrong shape for it, however cheap the contract looks.
What Binary Settlement Does To Position Sizing
Sizing a continuous instrument is a question about exposure per point. A futures trader thinks in ticks and dollars-per-tick, sets a stop, posts margin, and plans for a range of partial outcomes: small wins, small losses, the occasional runner in either direction. The position can be trimmed as it moves, and most exits are neither the best case nor the worst.
Binary settlement deletes the middle of that distribution. An event contract position has exactly two terminal outcomes, and the honest sizing question changes from "how far will I let this run against me" to "how many total losses can this account absorb without changing how I trade." Three things follow from the step:
- Size To The Full Loss, Because The Full Loss Is A Normal Outcome. In the table above, a 25-cent contract that loses at $84.50 did not malfunction; near the line, zero is one of the two ordinary results. Even a contract bought at 80 cents loses one settlement in five when the market has it priced right, and a 20% outcome is not rare. The known-in-advance maximum loss is the real unit of size. The compensation is that it truly is a maximum: no margin call, no forced liquidation, no losing more than the position.
- Being Almost Right Pays Nothing, SO Partial-Credit Thinking Has To Go. A futures trader can be sloppy about the exact level and still profit from the move. A binary trader lives and dies on the line itself, which is why the fair question before entry is not "will it go up" but "will it clear that specific threshold by that specific time."
- Selling Cheap Contracts Is The Shape That Punishes Casual Sizing Hardest. Selling an unlikely outcome collects a small premium and risks most of a dollar; roughly speaking, one loss erases the premiums from about 15 wins. A seller can be right for weeks and hand it all back in one settlement, which is not the strategy breaking but the strategy's shape expressing itself. We walk the full arithmetic, price by price, in one loss costs many wins.
The connecting thread is that a binary price is a probability wearing a dollar sign: a 30-cent contract is a 30% claim, and every sizing decision is secretly a probability-versus-premium comparison. That habit transfers across markets: it is the same calculation our EV calculator runs for sportsbook prices, converting odds into implied probability and asking whether the payout clears it. Fees belong in the comparison too, and they are structured differently on an exchange than in a futures commission account: how Kalshi's fees work covers where the cents actually go.
Where Each Instrument Fits
Neither instrument is superior, and anyone selling you that conclusion is skipping the part that matters: they answer different questions about the same world.
A future fits exposure that is itself continuous. An airline hedging fuel, a farmer hedging a harvest, a trader with a view that oil is going meaningfully higher: these are magnitude problems, where the pain or the payoff scales with distance, and a payoff that scales with distance is the matching tool. The cost of that fit is open-ended risk that has to be managed with margin, stops, and attention.
An event contract fits exposure that arrives as an outcome, and the version of that we know best is our own. Our desk trades the Kalshi weather board, where the entire question is whether the temperature at one named station crosses one line, and every position we take there is graded against settlement once its contract resolves. Nothing about that trade cares how far the thermometer overshoots the line; it is a side problem, not a distance problem, and so is a rate decision, a data print landing in a band, or an index finishing above a level. There is a real hedging use in miniature too: a defined-risk contract against a discrete event that would cost you money, which we cover in using prediction markets to hedge real exposure. The cost of this fit is the step itself: no reward for magnitude, no partial credit near the line.
The honest test before either trade is to write the view down and look at its shape. "Oil is going higher" is a futures-shaped view. "Oil will not clear $85 by Friday" is an event-contract-shaped view. A surprising amount of bad sizing starts as a shape mismatch, a magnitude opinion stuffed into a binary wrapper because the contract looked cheap.
Event Contracts Vs Futures FAQ
What is the main difference between an event contract and a future? The settlement variable. A future settles against a continuous price and pays per point of movement, with losses that can exceed your initial outlay. An event contract settles a yes-or-no question at $1 or $0, with the maximum loss on either side fixed and fully posted at entry. The worked example above is the whole answer in one row: the same rally to $84.50 paid the future $4.50 a barrel and settled the "above $85" contract at zero.
Are event contracts just binary options? The payoff shape is the same: a step at a threshold instead of a slope. The structure around it differs; Kalshi-style event contracts trade on a CFTC-regulated exchange where every position is fully collateralized, either side can be taken, and contracts can be sold back before settlement rather than only held to expiry.
Can you lose more than you invest in an event contract? No. A buyer's maximum loss is the price paid, and a seller's is the difference between the premium collected and $1, both posted up front. That is a real structural difference from futures, where marked-to-market losses can grow past the original margin. The cap is on loss per contract, though, not on judgment: sized too large, a fully-defined loss can still be a serious one.
Do event contracts expire like futures? Both have a defined end. A futures position is rolled to the next contract month before expiry; an event contract resolves when its question does, at which point it settles at $1 or $0 and the money moves. On an exchange order book you can usually exit at the market price before that moment, the same way a futures trader closes before expiry. On the differences between an exchange order book and a bookmaker, see an exchange is not a sportsbook.
Which is better for hedging? Whichever matches the shape of the risk. Continuous exposure, like a fuel bill that grows with every dollar of price, wants a continuous hedge. A discrete event, like a decision or a threshold being crossed, can be hedged with a defined-risk event contract. Betting and DFS players will recognize this shape-matching instinct; we wrote about what transfers from prediction markets to DFS separately, and probability-first thinking applied to actual games is on display for nothing at our free expert picks page.
Back to the two middle rows of the table, because they are the whole piece. At $84.50 the futures trader and the event-contract trader both called the rally, and one of them lost everything anyway. Not because the contract was unfair, but because the two instruments were never answering the same question: one was paid for distance, the other for side. Read your own view before you pick the wrapper. If it is a view about how far, the slope is your shape; if it is a view about which side of a line, the step is, sized to the full loss it can hand you, because with a binary payoff the full loss is always one of the two ordinary endings.
Disclosure and fine print. Stokastic trades Kalshi weather markets and holds positions in them; nothing on this page is a pick, a play, or a recommendation, and no part of it is trading advice. We have no affiliate or commercial relationship with Kalshi and earn nothing if you trade there. Kalshi event contracts are CFTC-regulated event derivatives traded on a designated contract market, not sportsbook wagers, and a position can lose its full value. Selling an unlikely outcome collects a small premium and risks most of a dollar, so one loss can erase the premiums from about 15 wins; size accordingly. Futures and options carry their own risk of loss, including losses beyond an initial margin deposit, and nothing here is investment advice for those markets either. 18+, available where Kalshi operates; the risk of loss is real and, on the side we trade, individually large. Our weather-market trading is an open research log of a strategy we have not proven, with a sample far too small to judge, and the current state of that log lives on the hub, which is rebuilt through the day.
