What this is
Same long bet. Two tickets.
You can be long two ways that finish the same: buy the shares, or buy a call and sell a put (same month, same strike). The green box names the cheaper one, and how much cheaper, for the days left.
The bank rate is a ruler for time — not a fee on shares you already paid for.
This page is the delayed demo. Buy the spreadsheet to keep the green box on your computer. Type the legs at any broker — do not upload a file.