The top after-market Nasdaq gainers Wednesday were Old Second Bancorp Inc, Akamai Technologies Inc, Infinera Corporation, Nexstar Broadcasting Group, Inc. and Angie’s List Inc. The top after-market Nasdaq losers were Supernus Pharmaceuticals Inc, Citrix Systems Inc., Intuit Inc, and Zynga Inc.

Gainers

Old Second Bancorp Inc. (NASDAQ:OSBC) shares rose 22.32 percent to $4.00 in post-market trading after the company reported first quarter net income available to common shareholders of $4.2 million, or $0.30 per diluted share, for the quarter compared to a net loss available to common shareholders of $4.2 million, or $0.30 per diluted share, in the first quarter of 2012.

Akamai Technologies Inc. (NASDAQ:AKAM) shares surged 17.70 percent to $42.48 in post-market trading. The company Wednesday reported its first quarter net income of $71.5 million, or $0.39 earnings per share, up from $43.2 million or $0.24 earnings per share in the same quarter last year. Revenue rose 15 percent, to $368 million from $319.5 million for the same period last year. Analysts polled by FactSet were expecting earnings of $0.47 per share on revenues of $358.1 million.

Infinera Corporation (NASDAQ:INFN) shares climbed 11.86 percent to $7.45 in post-market trading. The company reported a loss $0.06 per share for the first quarter, better than Reuters' estimate of a loss of $0.07 per share and revenues for the period stood at $124.60 million compared to a consensus estimate of $119.65 million.

Nexstar Broadcasting Group Inc. (NASDAQ:NXST) shares advanced 11.36 percent to $25.00 in post-market trading. The company announced Wednesday that in association with Mission Broadcasting Inc., it has entered into definitive agreements to acquire the stock of privately-held Communications Corporation of America and White Knight Broadcasting (“CCA”), the owners of nineteen television stations and seven associated digital sub-channels in ten markets, for a total of $270 million in a transaction that is expected to be immediately accretive to Nexstar upon closing.

Angie’s List Inc. (NASDAQ:ANGI) shares gained 9.30 percent to $21.98 in post-market trading. The company reported first quarter loss per share of $0.14, $0.03 better than the analyst's estimate of a loss of $0.17. Revenues for the quarter came in at $52.2 million versus a consensus estimate of $51.54 million. Angie's List sees Q2 2013 revenues to be in the range of $58.5 million-59.5 million, versus a consensus estimate of $57.1 million.

Losers

Supernus Pharmaceuticals Inc. (NASDAQ:SUPN) shares plunged 13.49 percent to $4.49 in post-market trading after the company announced that it intends to offer, subject to market and other considerations, $75 million aggregate principal amount of Convertible Senior Notes due 2019 in a private offering.

Citrix Systems Inc. (NASDAQ:CTXS) shares declined 11.32 percent to $60.00 in post-market trading. The company shares dropped after the company reported first quarter EPS of $0.62, $0.01 worse than the analysts' estimate of $0.63. Revenues for the quarter came in at $673 million versus a consensus estimate of $676.9 million.

Intuit Inc. (NASDAQ:INTU) shares lost 8.99 percent to $58.42 in post-market trading. The company announced after the bell Wednesday that it expects approximately 4 percent revenue growth in TurboTax for the 2013 fiscal year. The company now expects to report third quarter non-GAAP EPS of $2.92 to $2.94, compared to prior expectations of $2.99 to $3.04. Full year 2013 non-GAAP EPS is expected to be between $3.31 and $3.35, compared to a previous guidance of $3.40 to $3.46.

Zynga Inc. (NASDAQ:ZNGA) shares dropped 8.93 percent to $3.05 in post-market trading. The company said it expects to generate revenues of $225 million to $235 million for the second quarter. Net loss is estimated to be in the range of $36.50 million or $0.05 per share compared to a net loss of $26.50 million or $0.03 per share forecast earlier. Analysts estimate the company to post a loss of a penny on revenues of $236.12 million.