How to use ProphetX: your first college sports trade

Published 2026-09-10 · Last reviewed 2026-09-18

Catie Di StefanoFounder & Editor-in-Chief

Reviewed by Catie Di Stefano

TL;DR

Download the ProphetX app, verify your identity, deposit $10 with code COLLEGEPM.
Contract prices are cents — 35¢ means the market thinks there's a 35% chance.
You can take an existing price or post your own and wait to be matched.
ProphetX takes about 2% of net winnings; losing trades cost nothing extra.

New to this? Read this first

Prediction markets price events in cents, not odds. Here is the vocabulary used on this page, in plain English.

Price = probability: A contract that pays $1 trading at 12¢ means the market thinks there's a 12% chance.
YES / NO share: YES pays $1 if it happens. NO pays $1 if it doesn't. You can never lose more than you paid.
Implied chance: Just the price read as a percentage. A contract at 14¢ implies a 14% chance.
Vig: A built-in margin some venues charge. On prediction markets you pay the spread and fees instead.
Liquidity: How much money is in the market. More money means you can get in and out at the price you see.

ProphetX is a sports prediction market: you trade yes/no contracts on game outcomes against other traders. This is the whole flow, from download to withdrawal, using a college football game as the example.

1. Set up the account

Download the app on iOS or Android, enter your legal name and date of birth, and put COLLEGEPM in the bonus code field while you register — it can't be added afterwards. ProphetX then runs an identity check and confirms your location.

2. Deposit $10

Fund with online banking, a wire, or crypto. $10 is the minimum and also the qualifying amount for the current offer.

3. Read a price before you trade it

Say a contract on your team winning Saturday is trading at 35¢. That means:

It costs 35 cents per contract.
It pays $1 if they win, $0 if they don't.
The market is pricing a 35% chance.

$10 buys about 28 contracts, which return roughly $28 if the team wins. Your job is to decide whether 35% is too low or too high — not whether the team is "good".

4. Take a price or post one

Accepting a showing price fills instantly. Posting your own — say 31¢ when the best offer is 35¢ — means waiting for someone to take the other side. Back means you hold the side that pays on the outcome; lay means you take the opposite side. There's no house in the middle, so nothing is skimmed off the price.

5. Hold, exit, or settle

If the price runs from 35¢ to 60¢ before kick-off, you can sell and bank the move. Otherwise the contract settles on the official result and pays $1 or $0. ProphetX takes about 2% of your net winnings; losing trades cost nothing beyond the stake.

6. Withdraw

Cash out through the same method you deposited with. Aeropay can be near-instant; wires can take up to 72 hours.

A sane first month

Trade markets you already follow — college football and basketball.
Stick to liquid games first; thin markets have wide spreads.
Size small. $2–$5 per contract position teaches the same lesson as $50.
Compare the same game on Polymarket or Kalshi — differences show you where the value is.

Open ProphetX with code COLLEGEPM or read the full ProphetX review first.

18+ only. New traders only. Offer terms are set by ProphetX and may change. Event contract trading involves risk, including loss of the funds you commit. ProphetX is a CFTC-regulated designated contract market and derivatives clearing organization. Not available in all states.

Price → probability → payout

Contract price in cents (e.g. 14)Amount you put in ($)

Implied chance: 14.0%
Contracts: 143
Pays back: $142.86
Profit if right: $122.86

A contract settles at $1 if the event happens and $0 if it doesn't, so the price is the market's probability. Every contract you buy at this price pays $1 — the cheaper the price, the less likely the market thinks it is.

Your first trade, step by step

Fund a small balanceOpen an account, verify your ID, and deposit $10–$20 by debit or ACH. You must be 18+ and in an eligible state.
Find the marketSearch the event by team, player or headline. Check the price and the volume — thin markets move a lot on small orders.
Read the price as a probabilityA 23¢ YES contract means the market gives it about a 23% chance. If you think it is higher than that, YES is the value side.
Place a limit orderEnter the price you want rather than taking the market. You buy shares, not a bet slip — the most you can lose is what you paid.
Decide your exitYou can sell any time before the event resolves, or hold to settlement where each winning share pays $1.

Ready to try it: open ProphetX. 18+, eligible states only. Trade what you can afford to lose.

Sources & further reading

ProphetX — official siteProphetX

Frequently asked questions

What's the minimum to start on ProphetX?

$10. That's also the qualifying deposit for the trade $10, get $20 offer with code COLLEGEPM.

What does a contract price mean?

It's the implied probability in cents. A contract at 35¢ costs 35 cents, pays $1 if the outcome happens, and $0 if it doesn't — so the market is pricing a 35% chance.

What is back and lay on ProphetX?

Back means you hold the contract that pays if the outcome happens. Lay means you take the opposite side and pay out if it does. Because both sides are traders, no house margin is built into the price.

Can I exit a trade before the game ends?

Usually yes, if there's a trader on the other side. You sell your contracts at the current price and lock in the difference instead of waiting for settlement.

Why hasn't my order filled?

You posted a price nobody has taken yet. Either wait, or accept the best price already showing. Unmatched orders are free to cancel.

How much does ProphetX charge?

Around 2% of net winnings in a market. Nothing on losing or unmatched trades.

What does the price actually mean?

A contract settles at $1 if the event happens and $0 if it doesn't, so the price is the market's probability. A contract at 23¢ means roughly a 23% chance, and $1 buys about 4.3 shares.

How much money do I need to start?

You can place a real trade with $10–$20. Contracts are priced in cents, so a $20 balance buys dozens of shares on a cheap market. Start small until you have seen a position settle.