Dec. 30, 2011: $40.55
October was a very good month for NetSuite investors, when shares increased from $26 to $38 over the 31-day period. Shares reached as high as $47 in early December before settling back a bit. Still, it was more than enough to make NetSuite the highest-growing tech stock for 2011. In early November, the company reported solid growth and expanding channel sales.