Hey guys, I executed my very first short today (for a 100$ gain, woooo). I noticed first and foremost, I have roughly 2000 in my account, I shorted about 1500 worth, after the short sell gets executed, it says my cash buying power remaining is only around 100$ even though I should have 500$ left (2000 account - 1500 short sale). I assume its because I'm essentially borrowing and my risk potential is +100% so they want to withhold some of my cash just in case I go underwater? Any further explanation would be awesome.

But my real question is: when I go long, as soon as I exit my position, my full cash buying power is restored. When I exited my short position today, my available cash buying power remained at ~100$. Why is this? When will it be restored to full (tomorrow maybe?). Thank you so much in advance for any input, guys!

-Pete