6 Nasdaq Stocks Trending Lower: ATPG, QLGC, HZNP, FB, APKT, SBUX

ATP Oil & Gas Corp. (NASDAQ:ATPG) is down 29.23% today at $1.3899. ATPG has traded 2.7 million shares so far today, 300 thousand shares more than its daily average. ATPG shares are down more than $1 a share over the past five days. The company has a market cap of 71.88 million.

QLogic Corp. (NASDAQ:QLGC) is down 20.23% today at $10.06. QLGC has traded 4.02 million shares so far today, well above its average volume of 1.7 million shares. QLGC shares are sinking today after missing on its first quarter results. The stock was also downgraded by Stifel Nicolaus from buy to hold. The company has a market cap of 973.52 million.

Horizon Pharma, Inc. (NASDAQ:HZNP) is down 20.03% today at $6.11. HZNP is down on heavy volume today with 3.1 million shares traded. HZNP shares are tumbling today despite receiving FDA approval for Rayos, a rheumatoid arthritis drug. The company has a market cap of 208.96 million.

Facebook, Inc. (NASDAQ:FB) is down 14.42% today at $23.02. FB has traded 57.1 million shares so far today, above its daily average of 46.4 million shares. Investors are reacting negatively after Facebook’s second quarter results. The company also didn’t offer any guidance. The company has a market cap of 49.16 billion.

Acme Packet, Inc. (NASDAQ:APKT) is down 11.98% today at $14.25. APKT has traded 7.9 million shares today, more than triple its normal volume. APKT shares are tumbling despite beating estimates due to a big drop in earnings. Sales fell 15% from the same quarter last year. The company has a market cap of 973.95 million.

Starbucks Corporation (NASDAQ:SBUX) is down 10.62% today at $46.85. SBUX has traded 14.8 million shares so far today and trades 7.8 million shares a day on average. SBUX shares are down today after the company cut forecast below estimates. The company has a market cap of 35.50 billion.