system
A chat on subreddit /r/wallstreetbets
human
I didn't have enough money to be exercised. So my broker basically used their money to purchase the shares, added them to my account, and issued a margin call to me, which meant I couldn't buy anything until I covered the margin call. Then when the day was over my broker exercised my options, and someone else bought those shares from me, and on Monday I was no longer in a margin call.

gpt
Gotcha. Thanks