Dendreon Corporation (NASDAQ:DNDN) tumbled around 16% in previous session, as triggering a trading bring to a close, following the biotechnology firm announced lower  than anticipated sales for its centerpiece cancer drug, Provenge.

Dendreon’s stocks trading were stop and constraints on short sales for the stock were triggered in an attempt to maintain shares from drop further. The move was initiated following Dendreon announced a 17.6 percent decrease in sales for the Q1, poorer than projected, though it managed to stay net losses within analyst projections.

The firm declared that its net loss for the quarter was $72M, or 48 cents per share, in contrast with $103.9M, or 70 cents per share, for the similar quarter a year before. Sales were $67.6M against previous year’s $82.1M. Analysts polled by FactSet had anticipated sales of $79.4M for the quarter.

XOMA Corp (NASDAQ:XOMA) jumped 22.36% or $0.70 to close the trading at $3.83 following it hit intra day high level of $4.08. The total traded volume in the previous trading session was 3.99 million shares as compared to average 0.564 million shares. Its fifty two week trading range was $2.22 – $4.13. The total market capitalization reached $317.33 million.

Sequenom, Inc. (NASDAQ:SQNM) stock’s trade at beginning with a price  of  $3.50 and throughout the trading session climbed at a high of $3.58 other than when day-trade ended the stock finally advanced 2.29% to $3.57. while in afterhour trading shares jumped about 10% on positive results.

SQNM had a trade volume of 4.05 million shares was higher as compared to average trading capacity of 2.23 million shares.