PERCEPTIVE ADVISORS LLC

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Contact Information PERCEPTIVE ADVISORS LLC
499 PARK AVENUE, 25TH FLOOR
NEW YORK NY 10022
Business Phone: 646-205-5340

13F Investments by Sector - 09/30/2011

13F Activity for 09/30/2011

^[1]Market Value:

$200,384

New Purchases:

28 stocks

Additional Purchases:

16 stocks

Sold out of:

43 stocks

Reduced holdings in:

10 stocks

^[1] - Market Value shown here may differ from what was reported on the actual 13F filing. The market value shown here includes only those securities that the Whalewisdom parsing engine successfully extracted. Value may also be rounded. Please refer to the actual 13F filing for verification.

Top 13F Holdings on 09/30/2011

Stock	% of Portfolio
Celgene Corporation	16.25%
Neurocrine Biosciences Inc.	9.95%
Ariad Pharmaceuticals Inc.	6.6%
Endo Pharmaceuticals Holdings Inc.	5.66%
ENDOCYTE INC	5.65%

View All Holdings

Recent SEC Filings

Schedule 13D/G Summary There have been 5 Schedule 13D/G filing(s) received since 09/30/2011

13F Holdings Comparison

Shares Calls Puts Principal Stock ticker:

*Shares are split adjusted
**CALLS, PUT, and PRN Market Values shown are taken straight from the 13F Filing and may be rounded to the nearest $1,000 (X $1,000). View the actual 13F Filing to confirm.

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13F Filings Available:

2011-09-30 - 13F-HR (Subscription required)
2011-06-30 - 13F-HR (Subscription required)
2011-03-31 - 13F-HR (Subscription required)
2010-12-31 - 13F-HR (Subscription required)
2010-09-30 - 13F-HR (Subscription required)
2010-06-30 - 13F-HR (Subscription required)
2010-03-31 - 13F-HR/A (Subscription required)
2010-03-31 - 13F-HR/A (Subscription required)
2010-03-31 - 13F-HR (Subscription required)
2009-12-31 - 13F-HR (Subscription required)
2009-09-30 - 13F-HR (Subscription required)
2009-06-30 - 13F-HR (Subscription required)
2009-03-31 - 13F-HR (Subscription required)
2008-12-31 - 13F-HR (Subscription required)
2008-12-31 - 13F-HR/A (Subscription required)
2008-12-31 - 13F-HR/A (Subscription required)
2008-09-30 - 13F-HR/A (Subscription required)
2008-09-30 - 13F-HR (Subscription required)
2008-06-30 - 13F-HR (Subscription required)
2008-03-31 - 13F-HR (Subscription required)
2007-12-31 - 13F-HR (Subscription required)
2007-09-30 - 13F-HR (Subscription required)
2007-06-30 - 13F-HR (Subscription required)
2007-03-31 - 13F-HR (Subscription required)
2006-12-31 - 13F-HR/A (Subscription required)
2006-12-31 - 13F-HR (Subscription required)
2006-09-30 - 13F-HR (Subscription required)
2006-06-30 - 13F-HR/A (Subscription required)
2006-06-30 - 13F-HR (Subscription required)
2006-03-31 - 13F-HR (Subscription required)
2005-12-31 - 13F-HR (Subscription required)
2005-09-30 - 13F-HR (Subscription required)
2005-06-30 - 13F-HR/A (Subscription required)
2005-06-30 - 13F-HR (Subscription required)
2005-03-31 - 13F-HR (Subscription required)
2004-12-31 - 13F-HR (Subscription required)
2004-09-30 - 13F-HR (Subscription required)
2004-06-30 - 13F-HR (Subscription required)
2004-03-31 - 13F-HR (Subscription required)
2003-12-31 - 13F-HR (Subscription required)
2003-09-30 - 13F-HR (Subscription required)
2003-06-30 - 13F-HR (Subscription required)
2003-03-31 - 13F-HR (Subscription required)
2002-12-31 - 13F-HR (Subscription required)
2002-09-30 - 13F-HR (Subscription required)
2002-06-30 - 13F-HR (Subscription required)
2002-03-31 - 13F-HR (Subscription required)
2001-12-31 - 13F-HR (Subscription required)

	Subject Company	Symbol	Date of Filing	Total Reported Shares Owned	Shares Reported on 13F	Change
SC 13G/A	TRIMERIS INC	TRMS	11/14/2011	0	2,333,400	Decreased position by -2,333,400
SC 13G	Aegerion Pharmaceuticals, Inc.	AEGR	02/10/2012	1,253,354	1,235,699	Increased position by 17,655
SC 13G	Neurocrine Biosciences Inc.	NBIX	02/10/2012	3,323,390	2,632,416	Increased position by 690,974
SC 13G	Athersys, Inc.	ATHX	02/10/2012	1,456,797	1,504,000	Decreased position by -47,203
SC 13G	ICAGEN INC NEW	ICGN	02/10/2012	350,000	0	New Position

PERCEPTIVE ADVISORS LLC

Schedule 13D and 13G filings submitted since 09/30/2011