Can anyone explain to me how options after a split work? I get the option quantity gets adjusted as x/100, but I don't understand why the value doesn't. Example, if I buy a 100 share contract before a 1:20 reverse at a strike price of $1, post split I assumed I should get a non-standard option of 5/100 at a strike price of $20. Instead I find myself with a 5/100 option at the old strike price of $1. Why?