Short Sellers Lightening Up Against Biotechs (AMGN, GILD, CELG, GENZ, BIIB)
Short sellers haven’t just eased up on betting against financial stocks. If you look at the major biotech stocks not involved in mergers you will see an across the board drop in the short interest in major biotechs. Below we have show the dates and the changes to represent each of the major names:
- Amgen (AMGN) 07/31/2008 short interest 31,659,693 down 22.96% from 07/15’s 41,097,709 shares.
- Gilead (GILD) 07/31/2008 short interest 33,141,320 down 0.06% from 7/15’s 12,632,227 shares.
- Celgene (CELG) 07/31/2008 short interest 12,301,038 down 20.38% from 7/15’s 5,642,397 shares.
- Genzyme (GENZ) 07/31/2008 short interest 6,839,521 down 8.21% from 7/15’s 3,888,041 shares.
- Biogen Idec (BIIB) 07/31/2008 short interest 7,467,029 down 2.67% from 7/15’s 4,819,980 shares.
With all the merger activity happening in the sector, you can imagine that short sellers probably wanted to avoid walking in one morning to find the stock up 25% on a merger announcement.
Jon C. Ogg
August 12, 2008
Short Interest Volume Changes: MAJOR BIOTECH (AMGN, GILD, BIIB, CELG, GENZ)
We ran a screen of the top five NASDAQ biotech stocks by market cap to look at the short interest changes from the end of May to mid-June. Amgen Inc. (NASDAQ: AMGN) had the largest gains in short selling by far and the others were mixed. We also screened Gilead Sciences Inc. (NASDAQ: GILD), Biogen Idec Inc. (NASDAQ: BIIB), Celgene Corporation (NASDAQ: CELG), and Genzyme Corp. (NASDAQ: GENZ).
Amgen Inc. (AMGN)
AS OF DATE Short Int. Change
06/13/2008 48,430,933 113.55%
05/30/2008 22,678,517 -8.48%
Gilead Sciences Inc. (NASDAQ: GILD)
AS OF DATE Short Int. Change
06/13/2008 34,676,528 6.77%
05/30/2008 32,478,444 -0.65%
Celgene Corporation (NASDAQ: CELG)
AS OF DATE Short Int. Change
06/13/2008 12,951,360 -5.98%
05/30/2008 13,775,373 -15.68%
Biogen Idec Inc. (NASDAQ: BIIB)
AS OF DATE Short Int. Change
06/13/2008 7,467,264 17.66%
05/30/2008 6,346,464 -6.51%
Genzyme Corp. (NASDAQ: GENZ)
AS OF DATE Short Int. Change
06/13/2008 5,751,563 1.17%
05/30/2008 5,684,945 1.12%
Jon Ogg
June 25, 2008