Pre-market Gainers: Yandex NV (NASDAQ:YNDX), Prosensa Holding NV (NASDAQ:RNA), Ubic Inc (ADR) (NASDAQ:UBIC), Gulf Resources (NASDAQ:GURE)

Shares of Yandex (NASDAQ:YNDX) were the target of some unusual options trading activity on Friday. Investors purchased 13,603 call options on the company, Analyst Ratings News reports. This is an increase of 144% compared to the average daily volume of 5,578 call options. Yandex NV (NASDAQ:YNDX) stock opened today at $31.35 and is currently trading at $31.63. The stock showed a negative weekly performance of -10.10%.

Prosensa Holding N.V. (NASDAQ: RNA), the Dutch biopharmaceutical company focusing on RNA-modulating therapeutics for rare diseases with high unmet need, reported encouraging 48-week data from its U.S.-based, Phase II placebo-controlled study (DMD114876 or DEMAND V) of its lead compound, drisapersen, for the treatment of Duchenne Muscular Dystrophy (DMD). Prosensa Holding NV (NASDAQ:RNA) stock opened at $8.25, in current trading session and currently is at $7.56, by gaining 12.28%.The 52 week range of $3.43-$34.55.Company’s market capitalization is $271.42 million.

UBIC, Inc. (NASDAQ:UBIC) was a big mover last session, as its shares surged over 19% on the day. The surge came on solid volume too with far more shares changing hands than in a normal session. This reverses the recent trend for this technology stock, as it is now down around 33% in the past one-month time frame. Ubic Inc (ADR) (NASDAQ:UBIC) stock is currently trading at $7.14 .The EPS of the stock is 0.51.Company’s market capitalization is $131.13 million.

Gulf Resources, Inc. (Nasdaq: GURE) (“Gulf Resources” or the “Company”), a leading manufacturer of bromine, crude salt and specialty chemical products in China, today announced its financial results for the fourth quarter and fiscal year ended December 31, 2013.Fourth Quarter 2013 Highlights. Revenue was $30.1 million, a year-over-year increase of 36.5%. Gulf Resources, Inc. (NASDAQ:GURE) stock opened the session at $2.99, and now is at $3.20. The 52 week range of the GURE stock remained $0.88-$3.20 and the day range was $2.90-$3.20.