Your position
Enter the strike you were (or would be) assigned at, then list every premium received and every cost to close, per share.
The price per share you're obliged to pay on the put you hold.
Each contract is 100 shares.
Used to show your paper profit or loss against your cost basis.
Premiums and costs, per share
TypeNote (optional)Per share ($)
Your entries are kept in this browser only, so they're still here next time you visit on this device.
Your cost basis
Premium received—
Paid to close or roll—
Net premium per share—
Effective cost basis per share—
Total cost of the shares—
Paper profit or loss at today's price—
Share price needed to break even—
How I think about it:
A roll's net credit lowers your cost basis, but only after you've counted what it cost to close the old option. Add both lines. The shares can still fall below your cost basis, which is why the paper profit or loss line matters.
Related: Rolling options guide · Roll comparison