PALO ALTO INVESTORS, LLC

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Contact Information PALO ALTO INVESTORS, LLC
470 UNIVERSITY AVE
PALO ALTO CA 94301
Business Phone: 650-325-0772

13F Investments by Sector - 09/30/2011

13F Activity for 09/30/2011

^[1]Market Value:

$763,870

New Purchases:

2 stocks

Additional Purchases:

23 stocks

Sold out of:

7 stocks

Reduced holdings in:

13 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
ViroPharma Inc.	10.81%
Cyberonics Inc.	10.76%
Medicis Pharmaceutical Corp.	6.13%
Onyx Pharmaceuticals Inc.	5.49%
Auxilium Pharmaceuticals Inc.	5.42%

View All Holdings

Recent SEC Filings

Schedule 13D/G Summary There have been 3 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 (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)
2008-09-30 - 13F-HR (Subscription required)
2008-08-15 - 13F-HR/A (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/A (Subscription required)
2007-03-31 - 13F-HR (Subscription required)
2006-12-31 - 13F-HR (Subscription required)
2006-09-30 - 13F-HR (Subscription required)
2006-06-30 - 13F-HR (Subscription required)
2006-03-31 - 13F-HR/A (Subscription required)
2006-03-31 - 13F-HR (Subscription required)
2005-12-31 - 13F-HR/A (Subscription required)
2005-12-31 - 13F-HR (Subscription required)
2005-09-30 - 13F-HR (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)

	Subject Company	Symbol	Date of Filing	Total Reported Shares Owned	Shares Reported on 13F	Change
SC 13G/A	BroadVision Inc.	BVSN	10/11/2011	288,885	283,761	Increased position by 5,124
SC 13G/A	SAVIENT PHARMACEUTICALS INC	SVNT	10/11/2011	8,967,502	8,705,802	Increased position by 261,700
SC 13G/A	AMAG Pharmaceuticals, Inc.	AMAG	11/14/2011	1,655,173	2,170,420	Decreased position by -515,247

PALO ALTO INVESTORS, LLC

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