PRE-LAUNCH No deposits yet. Replays run on real ETH and stock prices.
tandem Join the lobby
1P · BRINGS ETH

Two
players.

Player 1 brings ETH. Player 2 brings a Robinhood stock token. One position, two seats.

2P · BRINGS A STOCK

One
position.

The side whose asset moved more carries the loss. The other side gets its value back, as long as the position covers it.

▶ Replay a runHow it plays
waiting for player 2 ▮▮▮▯▯
REPLAY A RUN

Pick a stock. Pick a difficulty. Press play.

The run uses real daily closes: ETH from Coinbase, the stock from Nasdaq. Player 1 puts in 1 ETH, player 2 puts in the same dollar value of the stock.

DIFFICULTY
RUN LENGTH
calendar days back from today
1P · ETH
—
 
 
2P · STOCK
—
 
 
HOW IT PLAYS

Four screens. Two players.

  1. 01

    Pick a side

    1P brings ETH. 2P brings a stock token that lives on Robinhood Chain: TSLA, NVDA, SPY and 166 more.

  2. 02

    Pick a difficulty

    Easy is a wide price range, Hard is a tight one. Tighter earns more per day while the price stays inside, and exits faster.

  3. 03

    Play

    Both deposits become one position. Deposits are matched first come, first served, by value and difficulty.

  4. 04

    Game over, split

    Fees split in half. The side whose asset moved more carries the loss; the other gets its value back while the position covers it.

LOBBY · OPENS AT LAUNCH

Pick your seat.

Lobbies are not open yet. Take a seat on the list and we'll write when your side can deposit.

FAQ

Before you plug in.

Can I deposit now?

No. Tandem is pre-launch. The replay shows what a position would have done on real prices. Nothing is deposited, matched or paid out yet.

Where do the prices come from?

Daily closes: ETH from Coinbase, stocks from Nasdaq's public quotes. The stock list is every Robinhood stock token on Robinhood Chain.

What is the loss the mover carries?

Impermanent loss: a liquidity position is worth less than just holding both assets once prices drift apart. Tandem hands that loss to the side whose asset moved more.

What if the stock crashes?

Then 2P carries the loss. If the drop is so deep that the position can't cover 1P's ETH value, 1P gets everything that's left and 2P gets nothing.

Why is the fee slider zero?

Fees depend on real trading volume, which doesn't exist before launch. The slider lets you try an assumption; it isn't a promise.

What is $TANDEM?

The Tandem token, launching on Pons on Robinhood Chain. The contract will be posted only on our X. Not financial advice.