Top Institutional Investors

Dorsey Asset Management, LLC — 13F Holdings & Portfolio

CIK 1671657 · latest 13F-HR filed 2026-08-14

Backtest portfolio

Dorsey Asset Management, LLC manages $1.56B in 13F-reported U.S. long-equity assets across 11 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are ASML (16.61%), APP (14.50%), RPRX (8.82%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 0 new positions and exited 0; 9 existing positions rose in reported value and 2 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

Loading holdings…
AUM
$1.56B

Long-equity book

Holdings
11

Distinct positions

Period
2026-06-30

Filed 2026-08-14

Q/Q Activity
+0 / −0 / ↑9 / ↓2

vs 2026-03-31

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q2 26
ASML16.6% · -7%APP14.5% · +39%RPRX8.8% · +8%BKNG8.5% · +4409%SPGI8.3% · +42%UBER8.1% · +62%LYV7.7% · +8%DHR7.6% · +8%META7.2% · +24%AER7.2% · -32%SUNB5.5% · -48%

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q1 26 → Q2 26

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

4 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 94.5%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

As of the firm’s regulatory filing dated Mar 24, 2026.

Assets Under Management
$1.45B
Discretionary
$1.45B
Employees
10
Accounts
9
Address
150 NORTH WACKER DR
SUITE 960
CHICAGO, IL 60606
Phone
(312) 982-2543
Website
Name Title / Status Ownership Type
DORSEY, PATRICK, WARFIELD ControlPORTFOLIO MANAGER, MANAGING MEMBER
since Jul 2013
Less than 5%Individual
HARRIETT, MICHAEL, PATRICK ControlCOO/CFO/CCO
since Mar 2016
Less than 5%Individual
WHEAT THIN, LLC ControlDIRECT OWNER
since Jun 2021
75% or moreDomestic Entity
LAKEFRONT PATH, LLCDIRECT OWNER
since Jun 2021
5–10%Domestic Entity
DORSEY, PATRICK, WARFIELD Control
Indirect owner via WHEAT THIN, LLC
MANAGING MEMBER
since Jun 2021
75% or moreIndividual
HARRIETT FAMILY DECLARATION OF TRUST DATED DECEMBER 13, 2019 Control
Indirect owner via LAKEFRONT PATH, LLC
MANAGING MEMBER
since Jun 2021
75% or moreDomestic Entity
HARRIETT, MICHAEL, PATRICK Control
Indirect owner via HARRIETT FAMILY DECLARATION OF TRUST DATED DECEMBER 13, 2019
TRUSTEE
since Dec 2019
General partner, trustee or managerIndividual
Ownership & leadership changes · 6 filings with changes since Apr 15, 2015

From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.

Mar 28, 2025 filing
  • No longer listedJACKSON, ROBERT, WRIGHT · MANAGING MEMBER · 75% or more · indirect via OYSTER BAY, LLC · control person · listed since Jun 2021
  • No longer listedOYSTER BAY, LLC · DIRECT OWNER · 5–10% · listed since Jun 2021
Nov 10, 2021 filing
  • No longer listedJACKSON, ROBERT, WRIGHT · RESEARCH ANALYST · 5–10% · listed since Dec 2014
  • AddedDORSEY, PATRICK, WARFIELD · MANAGING MEMBER · 75% or more · indirect via WHEAT THIN, LLC · control person
  • AddedHARRIETT FAMILY DECLARATION OF TRUST DATED DECEMBER 13, 2019 · MANAGING MEMBER · 75% or more · indirect via LAKEFRONT PATH, LLC · control person
  • AddedHARRIETT, MICHAEL, PATRICK · TRUSTEE · General partner, trustee or manager · indirect via HARRIETT FAMILY DECLARATION OF TRUST DATED DECEMBER 13, 2019 · control person
  • AddedJACKSON, ROBERT, WRIGHT · MANAGING MEMBER · 75% or more · indirect via OYSTER BAY, LLC · control person
  • AddedLAKEFRONT PATH, LLC · DIRECT OWNER · 5–10%
  • AddedOYSTER BAY, LLC · DIRECT OWNER · 5–10%
  • AddedWHEAT THIN, LLC · DIRECT OWNER · 75% or more · control person
  • ChangedDORSEY, PATRICK, WARFIELD · title MANAGING MEMBER → PORTFOLIO MANAGER, MANAGING MEMBER; ownership 75% or more → Less than 5%
  • ChangedHARRIETT, MICHAEL, PATRICK · ownership 5–10% → Less than 5%
Sep 11, 2019 filing
  • No longer listedBARES, BRIAN, TIMOTHY · MEMBER · 10–25% · listed since Feb 2014
  • AddedJACKSON, ROBERT, WRIGHT · RESEARCH ANALYST · 5–10%
  • ChangedHARRIETT, MICHAEL, PATRICK · ownership Less than 5% → 5–10%
Oct 31, 2016 filing
  • AddedHARRIETT, MICHAEL, PATRICK · COO/CFO/CCO · Less than 5% · control person
  • ChangedDORSEY, PATRICK, WARFIELD · title MANAGING MEMBER, CCO → MANAGING MEMBER
Mar 30, 2016 filing
  • No longer listedSANIBEL CAPTIVA HOLDINGS, INC. · MEMBER · 10–25% · listed since Feb 2014
Apr 20, 2015 filing
  • ChangedBARES, BRIAN, TIMOTHY · title MINORITY OWNER → MEMBER
  • ChangedDORSEY, PATRICK, WARFIELD · title PRESIDENT AND CHIEF COMPLIANCE OFFICER → MANAGING MEMBER, CCO
  • ChangedSANIBEL CAPTIVA HOLDINGS, INC. · title OWNER → MEMBER
Apr 15, 2015 filing (earliest on record)
  • ListedBARES, BRIAN, TIMOTHY · MINORITY OWNER · 10–25%
  • ListedDORSEY, PATRICK, WARFIELD · PRESIDENT AND CHIEF COMPLIANCE OFFICER · 75% or more · control person
  • ListedSANIBEL CAPTIVA HOLDINGS, INC. · OWNER · 10–25%

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

Top Adds (vs prior quarter)

Show all 9 →

Top Trims

Show all 2 →

New Positions

  • No new positions this quarter.
Show all 0 →

Exited Positions

  • No exits this quarter.
Show all 0 →

Dorsey Asset Management, LLC Holdings (2026-06-30)

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 ASML HLDG NV ASML N07059210 $259.4M 16.61% 130,364 SH
2 APPLOVIN CORP APP 03831W108 $226.3M 14.50% 439,313 SH
3 ROYALTY PHARMA PLC RPRX G7709Q104 $137.7M 8.82% 2,456,528 SH
4 BOOKING HOLDINGS INC BKNG 09857L108 $132.2M 8.46% 741,500 SH
5 S&P GLOBAL INC SPGI 78409V104 $128.9M 8.25% 316,413 SH
6 UBER TECHNOLOGIES INC UBER 90353T100 $127.1M 8.14% 1,761,941 SH
7 LIVE NATION ENTERTAINMENT IN LYV 538034109 $120.1M 7.69% 655,658 SH
8 DANAHER CORP DEL DHR 235851102 $119.3M 7.64% 626,211 SH
9 META PLATFORMS INC META 30303M102 $112.6M 7.21% 199,901 SH
10 AERCAP HOLDINGS NV AER N00985106 $111.8M 7.16% 766,828 SH
11 SUNBELT RENTALS HOLDINGS INC SUNB 866966104 $86.1M 5.51% 1,150,578 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-14 $1.56B 11 0001398344-26-014470
2026-03-31 2026-05-15 $1.26B 11 0001398344-26-009218
2025-12-31 2026-02-17 $1.15B 10 0001398344-26-003214
2025-09-30 2025-11-14 $1.11B 9 0001398344-25-020887
Filer Information
Address
150 NORTH WACKER DR. SUITE 960
CHICAGO, IL 60606
Phone
(312) 982-2543
Filing Manager
Dorsey Asset Management, LLC
CHICAGO, IL
Signatory
Michael Harriett
CCO/CFO/COO