On Thursday, the Dow Jones Industrial Average (NYSEARCA:DIA) closed up 45 points, or .36%, to 12,623. The S&P 500 (NYSEARCA:SPY) closed up 6 points, or .49%, to 1,314, and the Nasdaq (NASDAQ:QQQ) closed up 18 points, or .67%, to 2,788. Here were the biggest winners on Wall Street today:

Big gainers:

CNinsure Inc. (NASDAQ:CISG): The shares closed at $8.73, up $1.74, or 24.89%. They have traded in a 52-week range of $5.28 to $19.93.

Bank of Ireland (NYSE:IRE): The shares closed at $5.60, up $0.67, or 13.59%. They have traded in a 52-week range of $3.99 to $27.00.

F5 Networks, Inc. (NASDAQ:FFIV): Wells Fargo increased its valuation range on F5 after the company reported stronger than expected Q1 results and provided stronger than expected Q2 guidance. The firm maintains an Outperform rating on the stock. The shares closed at $120.00, up $11.54, or 10.64%. They have traded in a 52-week range of $69.01 to $129.92.

Knight Capital Group Inc. (NYSE:KCG): Knight Capital reports Q4 EPS 43c vs. consensus 25c. Reports Q4 revenue $341.3M vs. consensus $312.47M. The shares closed at $13.05, up $1.2, or 10.13%. They have traded in a 52-week range of $10.25 to $14.72.

Plexus Corp. (NASDAQ:PLXS): Plexus sees Q2 EPS 51c-58c vs. consensus 51c Sees Q2 revenue $550M-$580M vs. consensus $547.62M. The shares closed at $36.50, up $3.25, or 9.77%. They have traded in a 52-week range of $21.06 to $38.71.

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To contact the reporter on this story: Derek Hoffman at staff.writers@wallstcheatsheet.com

To contact the editor responsible for this story: Damien Hoffman at editors@wallstcheatsheet.com

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