How to use it
Enter the strike you were assigned shares at, how many contracts (100 shares each), and the total premium you’ve collected across every put and call you’ve sold on this position. The tracker returns your adjusted cost basis — your true break-even after all that premium — plus the premium per share and your return on the original cost so far.
The math
adjusted cost basis = assignment strike − (total premium ÷ shares). If you were
assigned 100 shares at $50 and have collected $300 in premium, your basis drops to
$47 — a 6% return on the original $5,000, and your new break-even.
TradeCaliper is a planning and education tool, not financial advice.