Palo Alto Investors LP

-

Assets, Funds, Holdings

Home | Sign Up | Log In
New Features
Latest Fund Raises
Related People
Fund Service Providers
Startup & Company Raises
List of Funds
Boston Firms
Boston Hedge Funds
Cornell Alumni Firms
CalPERS Portfolio
NYSCRF Portfolio
User Guide
Regulatory AUM vs AUM
LP Portfolios
Related Firms
Build a Portfolio
Comprehensive Search
Keyboard
Palo Alto Investors LP
CRD #109171
SEC #801-58166
CIK #0001012084, 0001306923
AUM 696.0 M (2026-03-27)
Employees 10 (40% Investors, 0% Brokers)
Phone650-325-0772
Address101 University Ave
Palo Alto, CA 94301-1638
Source [IAPD] [EDGAR] [Website]
Total AUM ($B)
3.02.41.81.20.60.01999200820172027
Sector Form 13F Holdings Value ($B)
Insmed Inc 0.1
Acadia Pharmaceuticals Inc 0.1
PTC Therapeutics Inc 0.1
BioMarin Pharmaceutical Inc 0.0
United Therapeutics Corp 0.0
Anaptysbio Inc 0.0
Mirum Pharmaceuticals Inc 0.0
Dyne Therapeutics Inc 0.0
Biogen IDEC Inc 0.0
FS Development Corp 0.0
View All
Holdings by Sector ($B)
3.02.41.81.20.60.02011201620212027
Type Form D Funds Date Sold AUM
HF Palo Alto PE Fund LP [2015-05-15] 1.0 M 3.0 M
Filed 2026-02-25 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $100,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
HF Lagunita LP [2015-02-26] 11.8 M 203.0 M
Filed 2020-03-31 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $100,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
HF Palo Alto Micro Cap Liquidating Fund LP [2014-04-11] 2.9 M
Filed 2013-03-28 (D) · Exemption 506, 3(c), 3(c)(1) · Minimum $100,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
HF Micro Cap Partners LP 2012-03-30 84.0 M
HF Palo Alto Advanced Life Sciences Master Fund LP [2012-03-30] 167.3 M 87.0 M
Filed 2026-02-25 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $5,000,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
HF Palo Alto Crossover Fund LP 2012-03-30 0.1 M
HF Palo Alto Energy Master Fund LP 2012-03-30 13.0 M
HF Palo Alto Fund II LP 2012-03-30 6.0 M
HF Palo Alto Global Energy Liquidating Fund LP [2012-03-30] 8.3 M
Filed 2010-05-10 (D) · Exemption 506, 3(c)(7) · Minimum $100,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
HF Palo Alto Healthcare Master Fund II LP [2012-03-30] 228.4 M 280.0 M
Filed 2026-02-25 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $1,000,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
View All
AUM Breakdown Accounts AUM ($B)
By Client Type
(a) Individuals (other than high net worth individuals) 0 0.0
(b) Individuals (high net worth individuals) 0 0.0
(c) Banking or thrift institutions 0 0.0
(d) Investment companies 0 0.0
(e) Business development companies 0 0.0
(f) Pooled investment vehicles 13 0.7
(g) Pension and profit sharing plans 0 0.0
(h) Charitable organizations 0 0.0
(i) State or municipal government entities 0 0.0
(j) Other investment advisers 0 0.0
(k) Insurance companies 0 0.0
(l) Sovereign wealth funds and foreign official institutions 0 0.0
(m) Corporations or other businesses not listed above 0 0.0
(n) Other 0 0.0
Total 13 0.7
By Discretionary
Discretionary 13 0.7
Non-Discretionary 0 0.0
Total 13 0.7
By Non-United States Persons
Non-United States Persons 0.0
United States Persons 0.7
Total 13 0.7
Limited Partners2011 - 2026
State Board of Administration of Florida
Teachers' Retirement Security for Illinois Educators
Form D Directors Role # Filings # Firms 2011 - 2026
Ronan Guilfoyle Director 358 108
Roger Hanson Director 255 86
Cary Marr Director 115 33
Jonathan Roney Director 99 18
Scott Smith Executive Officer 105 4
Mark Shamia Executive Officer 14 4
Patrick Lee Director, Executive Officer 27 2
William Edwards Executive Officer 19 2
Palo Alto Investors LLC Executive Officer 16 2
Anthony Yun Executive Officer 16 2
View All
EDGAR Form CIK 2011 - 2026
3 [0001012084]
13F-HR [0001306923]
3 [0001306923]
4 [0001306923]
SC 13D [0001306923]
SC 13G [0001306923]
Form 13D/13G Filer Form 13D/13G Subject Filed
Palo Alto Investors LP Ehealth Inc [2026-02-17]
Palo Alto Investors LP Palo Alto Investors LP [2020-02-14]
Palo Alto Investors LP Aimmune Therapeutics Inc [2020-02-14]
Palo Alto Investors LLC Karyopharm Therapeutics Inc [2016-02-16]
Palo Alto Investors LLC Epizyme Inc [2016-02-16]
Palo Alto Investors LLC Sunesis Pharmaceuticals Inc [2016-02-16]
Palo Alto Investors LLC Clovis Oncology Inc [2015-02-18]
Palo Alto Investors LLC Insmed Inc [2015-02-18]
Palo Alto Investors LLC Staar Surgical Co [2015-02-18]
Palo Alto Investors LLC Clovis Oncology Inc [2015-02-18]
View All
Firm Profile (Form ADV)
Discretionary AUM$1.9B
ServesInstitutional
Fund TypesHedge Fund, Private Equity
Form 3/4/5 Subject 2011 - 2026
Alimera Sciences Inc
Palo Alto Investors LP
Palo Alto Investors
Palo Alto Healthcare Master Fund LP
Palo Alto Healthcare Fund LP
Palo Alto Healthcare Fund II L P
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Alimera Sciences Inc ALIM
Common Stock
2023-03-24 Sell 200,919 $1.56 313,434
Alimera Sciences Inc ALIM
Series A Convertible Preferred Stock · derivative
2023-03-24 Sell 600,000 $1.56 936,000
Comparable Firms State AUM
Waystone Asset Management USA LLC
IL 742.6 M
Seneca Management LLC
CO 716.9 M
Olympus Peak Asset Management LP
CT 702.0 M
Maltese Capital Management LLC
NY 695.7 M
Newpoint Real Estate Investment Management LLC
NY 690.1 M
AW Jones Advisors LLC
NY 667.0 M
Archer Capital Group Management LLC
CA 659.6 M
M37 Management LP
CA 656.4 M
Altum Capital Management LLC
NY 647.8 M
Standard General LP
NY 647.3 M
Terms | Privacy | Providers | Companies | Guide
tony@aum13f.com