The top stocks to gain after market hours on the Nasdaq on Tuesday were VOXX International Corp., Advent Software Inc., Trius Therapeutics Inc., YRC Worldwide, Inc., and Sabra Health Care REIT, Inc. The top after-market losers on the Nasdaq were Rockwell Medical, Inc., The ExOne Company, Photronics, Inc., and WebMD Health Corp.

Gainers

VOXX International (NASDAQ:VOXX) shares climbed 7.63 percent to $29.88 in post-market trading. The company reported that its fourth quarter net income was $10.3 million or $0.43 per share in comparison to a net income of $10.9 million or $0.46 per share in the same period last year. However,  earnings topped analysts’ expectation of $0.19 per share for the quarter. 

Advent Software (NASDAQ:ADVS) shares rose 5.02 percent to $32.21 in post-market trading.  The company's stock has a 52-week low of $20.85, a 52-week high of $30.86 and $1.55 billion in market capitalization.

Trius Therapeutics (NASDAQ:TSRX) shares advanced 4.29 percent to $8.50 in post-market trading. Trius’ shares surged more than 8 percent in regular trading on Tuesday after the company announced that it had received a Notice of Allowance from the U.S. Patent and Trademark Office on an application related to its experimental novel antibiotic, tedizolid phosphate. This patent application protects a therapeutic combination of tedizolid phosphate with a currently available antibiotic daptomycin.

YRC Worldwide (NASDAQ:YRCW) shares gained 1.64 percent to $16.08 in post-market trading. The company's shares surged more than 9 percent in regular trading on Tuesday after the company sent official letters to employees on Thursday explaining YRC's reasons for attempting to buy ABF Freight System Inc. and ABF's reasons for rejecting the offer.

Sabra Health Care REIT (NASDAQ:SBRA) shares rose 1.63 percent to $31.81 in post-market trading. The company's shares have a 52-week low of $13.37, a 52-week high of $32.33 and $1.17 billion in market capitalization.

Losers

Rockwell Medical (NASDAQ:RMTI) shares plunged 10.58 percent to $3.21 in post-market trading. The company announced on Tuesday its intention to offer shares of its common stock in an underwritten public offering.

The ExOne Company (NASDAQ:XONE) shares fell 8.44 percent to $44.50 in post-market trading. The company reported first quarter loss-per-share of $0.20 compared to analysts' estimate of a loss of $0.11 per share. Revenues for the quarter rose 193 percent to $7.9 million but missed the consensus estimate of $9.15 million. Shares had surged more than 9 percent in regular trading on Tuesday ahead of the results.

Photronics (NASDAQ:PLAB) shares declined 5.79 percent to $7.48 in post-market trading. The company on Tuesday reported a second-quarter profit of $5.44 million, down from $9.53 million in the same period last year. Net income decreased to $4.86 million or $0.08 per share from $8.82 million or $0.14 per share last year and against analysts’ expectation of $0.09 for the quarter.  

WebMD Health Corp. (NASDAQ:WBMD) shares dropped 5.13 percent to $27.75 in post-market trading. The company's shares have a 52-week low of $13.13, a 52-week high of $30.69 and $1.43 billion in market capitalization.