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Split band

Number	Meaning
Paid	Your stake. The most you can lose.
Max payout	Width × contracts. Reached when price closes at or past the cap.
Break-even	Up: strike + cost per contract. Down: cap − cost per contract.
Value now	What Cash out pays right now (the pool's bid)

Up pays nothing at or below the strike, rises one for one between strike and cap, and is flat at the width above the cap. Down is the mirror.

 payout
   W ┤            ┌──────  Up
     │           ╱
     │          ╱
   0 ┼─────────┘
     └─────────┬──┬──────▶ price at close
            strike cap

Value at expiry and value now

Before expiry a position has two values: what it pays if the price stays here until the close, and what it is worth if you close now. They differ while time is left. A band that pays nothing at today's price can still have value, because the price can still get there.

Venue positions

Paradex and Derive positions show the venue's mark, your cost, and max loss. For a debit package, max loss is what you paid. For a credit package it is the width minus the credit.