Take a look at some of Thursday's midday movers:
The S&P 500 moved above its October 9, 2007 record closing high of 1,565.15 early in the session. The best performing stocks in that index this year include Netflix, up over 100-percent year to date, Best Buy and Hewlett-Packard.
Biogen Idec was the best performing stock on the S&P 500. Several analysts raised price targets on the global biotechnology company after it received FDA approval for a new multiple sclerosis treatment.