Trade
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Fees

Most desks bury the cost.
Ours is one number.

One percent of your margin when a position opens, and one percent when it closes. No spread on top of the Polymarket midpoint, no funding rate, no withdrawal fee, no minimum balance.

  • 1% of margin to open a position
  • 1% of margin to close it again
  • 10x the most leverage on offer
  • 0.002 ETH is the smallest trade

A 0.1 ETH position at 5x costs 0.001 ETH to open and 0.001 ETH to close, whatever the market does in between. Liquidation costs nothing extra: the margin is already gone at that point, and it is the most you can lose.

What you pay

Two fees, and nothing after them.

Both are charged on the margin you post, not on your leveraged exposure, so leverage never multiplies what you pay us.

Opening

Taken the moment the position is created.

1% of margin charged once, up front

What it means

  • Leaves your balance alongside the margin itself
  • Entry is the live Polymarket midpoint, with nothing added
  • A 0.1 ETH margin costs 0.001 ETH to open

Closing

Taken out of the payout when the position settles.

1% of margin charged once, at the end

What it means

  • Comes out of the payout, never out of your pocket
  • A liquidated position pays nothing, so it is charged nothing
  • Settling at resolution costs the same as closing by hand

Everything else

The costs other venues add and we do not.

Zero spread, funding, withdrawal

What it means

  • No funding rate, however long you hold
  • No charge to deposit or withdraw beyond the chain gas
  • No account minimum and no monthly charge

The mechanics

Four things move your result. Nothing else.

The same arithmetic runs on every position, on every market, for everyone.

  • 1

    Which way the odds went

    Your margin moves with the percentage change in the probability, not the percentage points. A market going from 20% to 22% is a 10% move, not a 2% one.

  • 2

    How much leverage you took

    Leverage multiplies that change. At 5x, a 10% move in the odds is 50% of your margin, up or down.

  • 3

    Whether you hit the liquidation level

    A move of 1/leverage against you wipes the position out. At 10x that is a 10% move in the odds, at 2x it is 50%. Past that point the margin is gone and nothing more is owed.

  • 4

    Where the market finally settled

    Hold to resolution and the position closes at the final price, 0 or 1. If Polymarket closes the market without resolving it, the last mark is used instead.

Nothing to sign up for.

Connect a wallet, deposit ETH on Robinhood Chain and the board is open.