Short Interest Rises in Facebook (FB), Google (GOOG), Tesla (TSLA); Falls in 31% in Apple (AAPL)

On Christmas Eve, NASDAQ released short interest data for the two-week period ended December 15, 2014. Overall, short interest in all 2,910 NASDAQ securities totaled 8,441,763,186 shares at the December 15, 2014 settlement date, compared with 2,910 issues and 8,507,937,827 shares at the end of the previous reporting period.

Below are some notable short interest updates for several notable and heavily shorted NASDAQ stocks (NOTE: We added three biotechs to the list to track - GILD, BIIB, CELG - although the days covered doesn't include the recent biotech rout.)

HIGHER SHORT INTEREST:

• Facebook (NASDAQ: FB) short interest goes up from 34,210,393 shares to 34,842,204. Days to cover from 1.40 to 1.37.
• Google (NASDAQ: GOOG) short interest goes up from 2,303,569 shares to 2,876,401. Days to cover from 1.38 to 1.49. NOTE: Google (NASDAQ: GOOGL) short interest goes down from 2,374,772 shares to 2,363,748. Days to cover from 1.38 to 1.03.
• Tesla (NASDAQ: TSLA) short interest goes up from 22,613,117 shares to 23,474,178. Days to cover from 5.15 to 3.45.
• Biogen Idec (NASDAQ: BIIB) short interest goes up from 2,482,567 shares to 2,848,915. Days to cover from 1.61 to 1.26.
• BlackBerry (NASDAQ: BBRY) short interest goes up from 111,375,334 shares to 111,509,772. Days to cover from 9.12 to 11.43.
• Keurig Green Mountain (NASDAQ: GMCR) short interest goes up from 6,134,762 shares to 6,156,295. Days to cover from 2.11 to 3.71.
• GoPro, Inc. (NASDAQ: GPRO) short interest goes up from 10,558,122 shares to 12,755,375. Days to cover from 1 to 1.92.
• First Solar (NASDAQ: FSLR) short interest goes up from 8,451,951 shares to 8,939,981. Days to cover from 3.93 to 4.08.
• El Pollo Loco (NASDAQ: LOCO) short interest goes up from 2,242,902 shares to 2,910,539 shares. Days to cover from 1.00 to 1.87.
• SolarCity (NASDAQ: SCTY) short interest goes up from 17,384,965 shares to 18,643,049. Days to cover from 7.51 to 7.57.
• Zynga (NASDAQ: ZNGA) short interest goes up from 64,113,958 shares to 70,485,894. Days to cover from 6.87 to 7.04.
• Intercept Pharmaceuticals, Inc. (NASDAQ: ICPT) short interest goes up from 2,162,189 shares to 2,370,067. Days to cover from 4.97 to 4.29.

LOWER SHORT INTEREST:

• Apple (NASDAQ: AAPL) short interest goes down from 78,182,668 shares to 53,673,391. Days to cover from 1.69 to 1.00.
• Microsoft (NASDAQ: MSFT) short interest goes down from 67,099,529 shares to 58,708,012. Days to cover from 2.35 to 2.06.
• Gilead Sciences (NASDAQ: GILD) short interest goes down from 56,571,917 shares to 55,467,752. Days to cover from 3.49 to 3.97.
• Celgene (NASDAQ: CELG) short interest goes down from 11,165,661 shares to 10,373,953. Days to cover from 3.22 to 2.20.
• Netflix (NASDAQ: NFLX) short interest goes down from 6,002,352 shares to 5,997,113. Days to cover from 2.75 to 3.22.
• Micron (NASDAQ: MU) short interest goes down from 91,013,63 shares to 88,342,760. Days to cover from 5.23 to 4.74.
• lululemon athletica (NASDAQ: LULU) short interest goes down from 23,433,941 shares to 23,349,907. Days to cover from 9.05 to 4.26.
• SodaStream International (NASDAQ: SODA) short interest goes down from 3,412,532 shares to 3,064,343. Days to cover from 7.27 to 4.86.
• Groupon (NASDAQ: GRPN) short interest goes down from 89,267,776 shares to 86,567,261. Days to cover from 6.73 to 6.43.
• MannKind (NASDAQ: MNKD) short interest goes down from 79,738,493 shares to 79,738,493. Days to cover from 22.00 to 20.07.
• Plug Power (NASDAQ: PLUG) short interest goes down from 36,553,762 shares to 78,755,843. Days to cover from 7.36 to 4.79.

The prior period's short interest report can be found here.

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