Crazy, yesterday I was assigned on 2 calls, that's 200 shares (was a hedged position, time spread). I bought it back today. The rate I was quoted yesterday was 650%, so I paid around $250 just to be short the stock 1 day! At 900% you are paying $2 a day, per share! So the stock has to fall 2 every day just to break even. This is causing some crazy pricing in the options as well.
This does beg the question, when you start paying interest. I assume it's from the moment the counter party exercises...anyone know for sure?
It's strictly whole days between settlement periods. The exact time of exercise doesn't matter. If you're assigned Wednesday night and cover Thursday morning you pay three days of interest because settlement crosses the weekend.
TLRY largest holder just promised not to sell in the first half of 2019. Masterfully done, now shorts scramble to cover. Stock up $13 premarket