I have recently been exercised on 6 naked puts with 1000 shares per contract, so I expected to wake up to see 6,000 shares in my account ready to sell for a loss. The thing is, i was suprised to see double the amount, with 12,000 shares in my portfolio. Being confused I checked my trading history, and it says they only bought 6,000. This is the first time i've been exercised, so i'm not sure if this is normal or if there is 6,000 unaccounted for shares in my account?
Any help would be appreciated,