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Greenhaven Road Investment Management, L.P. — 13F Holdings & Portfolio

CIK 1741129 · latest 13F-HR filed 2026-08-14

Backtest portfolio

Greenhaven Road Investment Management, L.P. manages $154.0M in 13F-reported U.S. long-equity assets across 17 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are HGTY (14.44%), CLBT (11.94%), KWY (11.47%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 4 new positions and exited 4; 8 existing positions rose in reported value and 4 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
$154.0M

Long-equity book

Holdings
17

Distinct positions

Period
2026-06-30

Filed 2026-08-14

Q/Q Activity
+4 / −4 / ↑8 / ↓4

vs 2026-03-31

Portfolio charts

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

Portfolio map

Q2 26
HGTY14.4% · -21%CLBT11.9% · -18%KWY11.5% · newLFCR10.9% · -10%PAR9.2% · +1%BUR8.1% · +42%ANAB7.5% · newKKR6.8% · +7%ASTS6.2% · -52%NN5.1% · +26%CODI4.6% · newZM1.9% · +33%APP1.6% · newPDEX0.1% · newMTRX0.1% · -7%RSSS0.1% · 0%QRHC0.0% · 0%

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 = 91.6%

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

Firm Profile & Key People

As of the firm’s regulatory filing dated Mar 30, 2026.

Assets Under Management
$299.5M
Discretionary
$299.5M
Employees
4
Accounts
6
Address
8 SOUND SHORE DRIVE
SUITE 210
GREENWICH, CT 06830
Phone
(203) 663-3720
Website
This firm reports 2 disclosure items on its registration.
Name Title / Status Ownership Type
Elia, Vincent, John ControlCHIEF COMPLIANCE OFFICER
since Mar 2026
Less than 5%Individual
MVM FUNDS LLC ControlGENERAL PARTNER
since Jun 2016
Less than 5%Domestic Entity
Miller, Scott, Stewart ControlLIMITED PARTNER & PRINCIPAL
since Jun 2016
75% or moreIndividual
Miller, Scott, Stewart Control
Indirect owner via MVM FUNDS LLC
MANAGER
since Jun 2016
75% or moreIndividual
Ownership & leadership changes · 2 filings with changes since Jun 30, 2021

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 30, 2026 filing
  • No longer listedRUBIN, MARK, JOEL · CHIEF OPERATING OFFICER / CHIEF COMPLIANCE OFFICER · Less than 5% · control person · listed since Dec 2015
  • AddedElia, Vincent, John · CHIEF COMPLIANCE OFFICER · Less than 5% · control person
Oct 21, 2021 filing
  • AddedMVM FUNDS LLC · GENERAL PARTNER · Less than 5% · control person
  • AddedMiller, Scott, Stewart · MANAGER · 75% or more · indirect via MVM FUNDS LLC · control person
  • ChangedMiller, Scott, Stewart · title MANAGING MEMBER → LIMITED PARTNER & PRINCIPAL
Jun 30, 2021 filing (earliest on record)
  • ListedMiller, Scott, Stewart · MANAGING MEMBER · 75% or more · control person
  • ListedRUBIN, MARK, JOEL · CHIEF OPERATING OFFICER / CHIEF COMPLIANCE OFFICER · Less than 5% · control person

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 8 →

Top Trims

Show all 4 →

New Positions

Show all 4 →

Exited Positions

Show all 4 →

Greenhaven Road Investment Management, L.P. 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 HAGERTY INC HGTY 405166109 $22.2M 14.44% 1,865,430 SH
2 CELLEBRITE DI LTD CLBT M2197Q107 $18.4M 11.94% 1,260,039 SH
3 KINGSWAY FINL SVCS INC KWY 496904202 $17.7M 11.47% 1,696,149 SH
4 LIFECORE BIOMEDICAL INC LFCR 514766104 $16.8M 10.88% 3,190,769 SH
5 PAR TECHNOLOGY CORP PAR 698884103 $14.2M 9.25% 817,888 SH
6 BURFORD CAP LTD BUR G17977110 $12.5M 8.10% 3,042,947 SH
7 ANAPTYSBIO ANAB 032724106 $11.5M 7.50% 171,059 SH
8 KKR & CO INC KKR 48251W104 $10.5M 6.80% 114,051 SH
9 AST SPACEMOBILE CL A ASTS 00217D100 $9.5M 6.19% 107,294 SH
10 NEXTNAV INC NN 65345N106 $7.8M 5.09% 439,463 SH
11 COMPASS DIVERSIFIED HLDGS CODI 20451Q104 $7.0M 4.55% 657,596 SH
12 ZOOM COMMUNICATIONS INC ZM 98980L101 $2.9M 1.86% 33,141 SH
13 APPLOVIN CL A APP 03831W108 $2.5M 1.61% 4,810 SH
14 PRO-DEX INC PDEX 74265M205 $209.9K 0.14% 3,585 SH
15 MATRIX SVC CO MTRX 576853105 $177.4K 0.12% 12,947 SH
16 RESEARCH SOLUTIONS INC RSSS 761025105 $89.3K 0.06% 38,477 SH
17 QUEST RESOURCE HLDG CORP QRHC 74836W203 $39.6K 0.03% 31,463 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-14 $154.0M 17 0001420506-26-001699
2026-03-31 2026-05-15 $145.4M 17 0001420506-26-001077
2025-12-31 2026-02-13 $594.0M 16 0001420506-26-000339
2025-09-30 2025-12-01 $677.6M 17 0001420506-25-003515
Filer Information
Address
8 SOUND SHORE DRIVE
SUITE 210
GREENWICH, CT 06830
Phone
(203) 569-8920
Filing Manager
Greenhaven Road Investment Management, L.P.
GREENWICH, CT
Signatory
Vincent Elia
Director