"portermac" - Someone most probably placed a buy order as a MARKET order instead of as a LIMIT order. Happens all the time. THE STOCK MARKET IS JUST LIKE ANY OTHER KIND OF AUCTION!! In fact - the stock market really IS an auction and the Market Makers are the AUCTIONEERS. That's why you have a BID and an ASK and that's the real beauty of the stock market because it really is just that simple. SUPPLY and DEMAND - PERIOD!! Sleep well.
Market Data 
Markets 
AI
