BOOKIE
Launch app

BOOKIE

Every bet needs a house. One button makes it you.

A stock prediction market on Robinhood logoRobinhood Chain. Bet YES or NO on a real stock price, like Nvidia logoNVDA above $215 after Friday's bell. One shared USDG logoUSDG pool takes the other side of every bet, priced by pm-AMM, and anyone can put money in it. Chainlink logoChainlink feeds settle. Nobody judges.

Launch appPractice a bet
The BOOKIE joker behind the counter, hugging the house's chip stacks and holding three cards
BOOKIE.SYS odds boardnext bell --

*** STOP: 0x00001237 (ROBINHOOD_CHAIN_FEEDS_LIVE)

0x1237 is 4663, the Robinhood logoRobinhood Chain id. 10 of 10 Chainlink logoChainlink stock feeds answered just now. A row turns white when its feed prints, and gets odds when its market opens.

StockLast printPrintedPrintsYES / NO
Nvidia logoNVDANvidia$211.16reading1,345no book yet
Tesla logoTSLATesla$372.07reading1,730no book yet
Apple logoAAPLApple$346.80reading805no book yet
Microsoft logoMSFTMicrosoft$525.88reading974no book yet
Meta logoMETAMeta$643.53reading1,722no book yet
Alphabet logoGOOGLAlphabet$320.86reading1,059no book yet
Amazon logoAMZNAmazon$248.04reading1,017no book yet
AMD logoAMDAMD$517.03reading3,585no book yet
S&P 500 ETF logoSPYS&P 500 ETF$762.26reading182no book yet
Nasdaq 100 ETF logoQQQNasdaq 100 ETF$707.28reading470no book yet
feeds answering on chain 4663
10/10
since the newest print on the board
--
USDG in the house
0
markets open
0

Practice table. Real pm-AMM math, play money, before fees.

Will NVDA print above $215 after Friday's bell?

Tap a card to put a $100 chip on it. The house at this table holds 10,000 play USDG, not real money.

YES and NO both cost 50.00¢ before the first chip. Every chip moves both prices.

THE HOUSE

The house is one shared pool of USDG logoUSDG that takes the other side of every bet. It loses to bettors who know more than the price, at a steady rate you can work out in advance. Fees on bets have to beat that rate. Scroll to run one 5-day market with 10,000 USDG of house money.

Cashier windowexpected values
Time to the bell
5d 0h
Liquidity in the curve
100%
Still in the market
10,000 USDG
Handed back to the house
0 USDG
Lost to sharper bettors
0 USDG
Fees needed per hour
41.67 USDG
pm-AMM with shrinking liquidity: a flat 41.67 USDG an hour, the same at every price and every hour. The same curve with fixed liquidity: the loss climbs toward the bell.Shaded: lost so far, 0 USDG. Left: open. Right: the bell.

The bell rang. BOOKIE is waiting for the first Chainlink logoChainlink print after it. Then every winning share pays $1.

0% complete

No print yet. Nobody can type a result in: the market waits for the feed.

QR code with the stop code text

For the whole rule, weekends included, read the print rule.

If you call a support person, give them this info:

Stop code: FIRST_PRINT_AFTER_THE_BELL

Technical information:

*** STOP: 0x00000002 (TWO_OUTCOMES_ONE_HOUSE)

Paradigm logoPrices come from pm-AMM, from the paper “pm-AMM: A Uniform AMM for Prediction Markets” by Ciamac Moallemi and Dan Robinson of Paradigm, November 2024. BOOKIE did not invent it. BOOKIE runs it onRobinhood logoRobinhood Chain with Chainlink logoChainlink stock feeds settling every market.