Greenstone Partners & Co., LLC — 13F Holdings & Portfolio
CIK 1845565 · latest 13F-HR filed 2026-08-14
Greenstone Partners & Co., LLC manages $432.6M in 13F-reported U.S. long-equity assets across 8 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are APP (23.25%), VSTS (17.10%), AYI (15.65%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 0 new positions, exited 1, added to 4, and trimmed 3.
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.
LARKSPUR, CA 94939
$432.6M
Long-equity book
8
Distinct positions
2026-06-30
Filed 2026-08-14
+0 / −1 / ↑4 / ↓3
vs 2026-03-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- VESTIS CORPORATION$33.9M +84.7%
- APPLOVIN CORP$22.9M +29.5%
- ACUITY INC$17.3M +34.4%
- SOMNIGROUP INTERNATIONAL INC$2.6M +6.1%
Top Trims
- CHARTER COMMUNICATIONS INC-$12.8M -34.1%
- PROCORE TECHNOLOGIES INC-$11.0M -28.7%
- GUIDEWIRE SOFTWARE INC-$10.7M -17.7%
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 | APPLOVIN CORP | APP | 03831W108 | $100.6M | 23.25% | 195,251 | SH |
| 2 | VESTIS CORPORATION | VSTS | 29430C102 | $74.0M | 17.10% | 5,094,356 | SH |
| 3 | ACUITY INC | AYI | 00508Y102 | $67.7M | 15.65% | 179,710 | SH |
| 4 | GUIDEWIRE SOFTWARE INC | GWRE | 40171V100 | $49.8M | 11.51% | 404,584 | SH |
| 5 | SOMNIGROUP INTERNATIONAL INC | SGI | 88023U101 | $44.6M | 10.31% | 568,634 | SH |
| 6 | APPFOLIO INC | APPF | 03783C100 | $43.9M | 10.14% | 273,617 | SH |
| 7 | PROCORE TECHNOLOGIES INC | PCOR | 74275K108 | $27.3M | 6.32% | 672,813 | SH |
| 8 | CHARTER COMMUNICATIONS INC | CHTR | 16119P108 | $24.8M | 5.73% | 174,167 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-14 | $432.6M | 8 | 0001420506-26-001719 |
| 2026-03-31 | 2026-05-14 | $395.1M | 9 | 0001420506-26-000995 |
| 2025-12-31 | 2026-02-18 | $514.4M | 12 | 0001941040-26-000189 |
| 2025-09-30 | 2026-02-25 | $546.9M | 11 | 0001420506-26-000618 |