CIK: 0001741129
Total reported value
$145.4M
Reporting period: 2026-03-31 · Number of holdings: 17
Greenhaven Road Investment Management, L.P. disclosed 17 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $145.4M and a quarterly turnover rate of 125.7%.
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Greenhaven Road Investment Management, L.P.'s disclosed holdings carry a Herfindahl concentration index of 0.113 — mathematically equivalent to about 9 equally-sized positions, well below its 17 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.99), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Sector classification currently covers about 21% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Add HGTY
-9.4% -$10.2M
Add CLBT
-4.0% -$7.7M
Add ASTS
-18.2% -$1.3M
Add KWY
-1.7% -$6.0M
Add ALLT
+47.8% $13.9K
Add LFCR
-3.9% -$17.0M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | HGTY | Hagerty Inc-a | Stock-Other | 17.17% | +11.25% | -9.43% | |
| 2 | CLBT | Cellebrite DI Ltd. | Stock-Other | 14.55% | +9.69% | -4.04% | |
| 3 | KWY | Kingsway CORP | Stock-Other | 13.29% | +9.02% | -1.74% | |
| 4 | ASTS | Ast Spacemobile INC | Stock-Tech | 12.84% | +9.47% | -18.17% | |
| 5 | LFCR | Lifecore Biomedical INC | Stock-Other | 9.05% | +3.98% | -3.94% | |
| 6 | PAR | Par Technology Corp/del | Stock-Other | 7.43% | +2.01% | -8.62% | |
| 7 | KKR | Kkr & Co INC | Stock-Financials | 6.78% | +3.12% | -43.92% | |
| 8 | BUR | Burford Capital Limited | Stock-Other | 6.66% | +3.86% | +14.74% | |
| 9 | ALLT | Allot Ltd. | Stock-Other | 5.80% | +4.38% | +47.84% | |
| 10 | NN | Nextnav INC | Stock-Other | 3.85% | +3.68% | +463.44% | |
| 11 | ZM | Zoom Communications INC | Stock-Tech | 1.38% | +1.38% | NEW | |
| 12 | MRLN | Merlin INC | Stock-Other | 0.55% | +0.55% | NEW | |
| 13 | INFL | Horizon Kinetics Infl Benef | ETF-Other | 0.36% | +0.36% | NEW | |
| 14 | MTRX | Matrix Service Co | Stock-Other | 0.11% | +0.08% | — | |
| 15 | PESI | Perma-fix Environmental Svcs | Stock-Other | 0.08% | +0.08% | NEW | |
| 16 | RSSS | Research Solutions INC | Stock-Other | 0.06% | +0.04% | — | |
| 17 | QRHC | Quest Resource Holding CORP | Stock-Other | 0.03% | +0.02% | — |
Performance for Q3 2026
-12.7%
Performance Last 4 Quarters
-23.3%
Based on 66% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 17 | $145.4M | 100 | |
| 2025-12-31 | 16 | $594.0M | 19 | |
| 2025-09-30 | 17 | $677.6M | 100 | |
| 2025-06-30 | 19 | $291.9M | 0 | |
| 2025-03-31 | 18 | $245.3M | 100 | |
| 2024-12-31 | 19 | $625.2M | 0 | |
| 2024-09-30 | 15 | $235.1M | 0 | |
| 2024-06-30 | 18 | $215.8M | 0 | |
| 2024-03-31 | 19 | $236.1M | 0 | |
| 2023-12-31 | 21 | $238.0M | 0 | |
| 2023-09-30 | 28 | $199.3M | 0 | |
| 2023-06-30 | 35 | $197.4M | 0 | |
| 2023-03-31 | 38 | $174.2M | 0 | |
| 2022-12-31 | 34 | $155.0M | 0 | |
| 2022-09-30 | 43 | $166.4M | 0 | |
| 2022-06-30 | 51 | $194.7M | 0 | |
| 2022-03-31 | 57 | $306.3M | 0 | |
| 2021-12-31 | 48 | $443.9M | 0 | |
| 2021-09-30 | 50 | $506.2M | 0 | |
| 2021-06-30 | 38 | $487.9M | 39 | |
| 2021-03-31 | 25 | $448.5M | 74 | |
| 2020-12-31 | 30 | $714.0M | 100 | |
| 2020-09-30 | 22 | $259.2M | 76 | |
| 2020-06-30 | 23 | $151.3M | 100 | |
| 2020-03-31 | 15 | $79.8M | 100 | |
| 2019-12-31 | 18 | $114.5M | 0 |
Greenhaven Road Investment Management, L.P.'s most significant position changes for 2026-03-31: Sold out: Ishares 20+ Year Treasury Bd (TLT); Sold out: Louisiana-pacific CORP (LPX); Sold out: Pinterest Inc- Class A (PINS); New buy: Zoom Communications INC (ZM); New buy: Merlin INC (MRLN).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | HGTY | Hagerty Inc-a | +11.3% | -9.43% | Trim |
| 2 | CLBT | Cellebrite DI Ltd. | +9.7% | -4.04% | Trim |
| 3 | ASTS | Ast Spacemobile INC | +9.5% | -18.17% | Trim |
| 4 | KWY | Kingsway CORP | +9% | -1.74% | Trim |
| 5 | ALLT | Allot Ltd. | +4.4% | +47.84% | Add |
| 6 | LFCR | Lifecore Biomedical INC | +4% | -3.94% | Trim |
| 7 | BUR | Burford Capital Limited | +3.9% | +14.74% | Add |
| 8 | NN | Nextnav INC | +3.7% | +463.44% | Add |
| 9 | KKR | Kkr & Co INC | +3.1% | -43.92% | Trim |
| 10 | PAR | Par Technology Corp/del | +2% | -8.62% | Trim |
| 11 | MTRX | Matrix Service Co | +0.1% | — | Unchanged |
| 12 | RSSS | Research Solutions INC | 0% | — | Unchanged |
| 13 | QRHC | Quest Resource Holding CORP | 0% | — | Unchanged |
| 14 | TLT | Ishares 20+ Year Treasury Bd | — | EXIT | Sold out |
| 15 | LPX | Louisiana-pacific CORP | — | EXIT | Sold out |
| 16 | PINS | Pinterest Inc- Class A | — | EXIT | Sold out |
| 17 | ZM | Zoom Communications INC | — | NEW | New buy |
| 18 | MRLN | Merlin INC | — | NEW | New buy |
| 19 | INFL | Horizon Kinetics Infl Benef | — | NEW | New buy |
| 20 | PESI | Perma-fix Environmental Svcs | — | NEW | New buy |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-15 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-13 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-12-01 | Amendment | View on EDGAR |
| 2025-09-30 | 2025-11-12 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-13 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-05 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-13 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-13 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-14 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-15 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-04-02 | Amendment | View on EDGAR |
| 2023-12-31 | 2024-02-14 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-21 | Amendment | View on EDGAR |
| 2023-09-30 | 2023-11-14 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-14 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-23 | Amendment | View on EDGAR |
| 2023-03-31 | 2023-05-15 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-14 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-15 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-17 | Amendment | View on EDGAR |
| 2022-06-30 | 2022-08-15 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-16 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-15 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-12 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-16 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-17 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-16 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-16 | Amendment | View on EDGAR |
| 2020-09-30 | 2020-11-16 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-14 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-05-15 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-14 | 13F-HR | View on EDGAR |
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