yes but what i have trouble with in that scenario is that someone was on the buy side of that. so even if it wasn’t reported to tape, the buyer needs to receive the shares. that fail to receive is booked somewhere other than the buyers book. nscc tracks fails and either keeps them
net in house, or kicks them out broker to broker. or the short has to borrow from internal or 3rd party in order to fulfill the delivery
if the net gain on the short outpaces the borrow interest, then it’s a win.
if the stock price increases and/or becomes harder to borrow, liq dries up, the interest rate, cost to borrow increases, and the short contemplates covering
currently tesla is easy and cheap to borrow compared to past (solar city days)