I'm not a big stock trader.  I've only ever done two transactions.  I bought Sirius stock when I found out they were signing Howard Stern.  I hate the guy, but thought it would be a big stock mover for them.  It was, then dropped over time.  I've lost money in that one, but no big deal.  Have the 230 shares I initially bought.
Now later,  I still had some money left in the account to use on a stock.  I decided to buy some bank stock after the banks nearly collapsed.  I bought Citigroup (symbol C).  I only bought 10 shares, but it was only about $3 a share at the time.  Realized the purchase was a little over what I actually had left in the account, and sold 4 in order to keep my account in the black and not have to put in more money.  So I had six shares left.  I've checked on occasion every half year or so.
I just checked, and my Citigroup shares are GONE!  My account was compensated $24.xx for the transaction back in May.  To add insult to injury, their stock value is at $24.63 today.  So I got maybe $4 a share.  I just sent an email asking what the hell happened, and why were my shares sold without my permission.  It's only $125, but still, it pisses me off...and it is $125.
Any ideas why this happened?
Edit:
That was fast.  Got a response.
Citigroup did a 1 for 10 reverse split.  Since I only had 6, Scottrade doesn't do fractional shares.  Thus the money back in the account.  In addition, I guess the reverse split was the reason the stock is up to $25.  So it's value didn't actually increase about 7x.  Rather, it is less.