AMM markets

How categorical NFT and stock markets work — buy and sell shares, one winning outcome, 1:1 claim.

Token rounds are UP / DOWN pots. NFT and stock markets are categorical AMM markets: several mutually exclusive outcomes, exactly one winner, and shares you can buy or sell before resolution.

Collateral is native ETH on Robinhood Chain. The app shows dollars using the live ETH price. The chain settles in ETH.

The question

Each market asks one question and lists the only answers that can win. Labels live in the app. Onchain, outcomes are indices 0 … n-1.

Example — Sight Genesis

Where will Sight Genesis open?

Index	Outcome
0	Below $24
1	$24 – $28
2	$28 – $32
3	$32 – $36
4	$36 – $40
5	$40 – $48
6	$48 or above

The percentages on the chart are the market’s implied odds. They move when people trade. They are not a promise of the mint price.

The same shape works for other NFT questions (floor bands, volume bands) and for stock ranges. Pick the buckets, keep the labels in Sight, and resolve exactly one index.

Buy and sell

Select an outcome, then:

What you see	Meaning
Spend	The dollars you want to pay
You pay	The quoted ETH cost, including the fee
If you win	What those shares pay if that outcome wins

Winning shares redeem 1 in ETH. A position of 0.01 shares pays 0.01 ETH if that outcome is the winner, and nothing if another outcome wins.

You can sell shares back to the market before trading closes. You receive is the quote after the fee. Selling does not wait for resolution.

Quick amounts in the trade panel are $1, $5, $10, and $25. One buy or sell can be at most 0.1 ETH.

Fees

The default fee is 2% (feeBps = 200).

Buys: the fee is added to the cost. You pay already includes it.
Sells: the fee is taken from proceeds. You receive is after the fee.

There is no separate fee on claim().

Resolution and claims

Trading stays open until the market’s end time, or until the resolver closes the book. Then the resolver sets one winning outcome.

Result	What you can do
You hold the winning outcome	Claim those shares 1 for ETH
You hold a losing outcome	Nothing to claim for those shares
The market is cancelled	Refund each share 1

Claim within 14 days of resolution. After that, remaining ETH can be swept and claims expire. See Claiming.

Positions

AMM positions show:

What you spent
How many shares that bought
What those shares pay if you win

Claimable is winning (or refundable) shares you still hold. History is shares you sold, already claimed, or that lost.