Hi! Taser officially became a member of the S&P 600 at 4:00 today. Most mutual funds and private funds have rules attached as to what 'categories' of stock can be added to their fund. Being included in an index is a common requirement, which means Taser was just thrust into the 'may be purchased' category for dozens if not hundreds of 'new' institutional purchasers. What you saw take place at just seconds after 4pm today was a block of pre-arranged private purchases. The price and number of shares would have been pre-determined and therefore did not require pulling from shares on the open market, and therefore did not affect open market bid/ask. Hope this helps.
By the way... You know ... if you bought when I did back in the single digits, achieving your name over the next decade is not out of the realm of possibility... ;)