Buy-ins on t+3 are common with many brokers, but the big exception seems to be Interactive Brokers. They seem to have a powerful algorithm for matching short positions to available borrows, and execute buyins on a first in, last out approach. My first MDBX short survived six weeks, the second three days, the third six days. My current short position is one day old. I have been short almost continuously since $47. I was not looking for borrows before then. I intend remaining short until MDBX reaches a reasonable pps based on fundamentals. There is still a lot of down side!
Register for free to join our community of investors and share your ideas. You will also get access to streaming quotes, interactive charts, trades, portfolio, live options flow and more tools.