Greenstone Partners & Co., LLC
In its 13F for Q3 2025 (holdings as of September 30, 2025, filed February 25, 2026), Greenstone Partners & Co., LLC reported 11 stock positions worth $546.9 million. Its top holding was AppLovin Class A (APP) at 45.2% of the portfolio, followed by Acuity (AYI, 12.1%) and Procore Technologies (PCOR, 7.0%). Compared with Q2 2025, it opened 2 new positions, sold out of 2, added to 3 and reduced 6. The biggest buy was a new position in Liberty Broadband-C (LBRDK) and the biggest sale Charter Communications Class A (CHTR, shares −76%).
- Most Recent 13F
- Q2 2026
- Location
- LARKSPUR, CA
- CIK
- 0001845565
- Portfolio Value
- $546.9M (Q3 2025)
- SEC Filing
- 0001420506-26-000618 ↗ filed Feb 25, 2026
Holdings Value
Holdings 11 stocks · $546.9M
| APP AppLovin Corp. Class A | 45.23% | 344,251 | $247.4M | Reduce -1.2% |
| AYI Acuity Inc. | 12.15% | 192,880 | $66.4M | Reduce -1.2% |
| PCOR Procore Technologies Inc. | 6.97% | 522,802 | $38.1M | Add +62.5% |
| APPF Appfolio Inc. Class A | 6.69% | 132,776 | $36.6M | Reduce -1.1% |
| LBRDK Liberty Broadband-C | 6.37% | 547,890 | $34.8M | New |
| GWRE Guidewire Software Inc. | 5.29% | 125,956 | $29.0M | Reduce -1.2% |
| PAR Par Technology Corp. | 4.62% | 638,426 | $25.3M | Add +20.2% |
| XPO Xpo Inc. | 4.50% | 190,422 | $24.6M | Reduce -1.2% |
| SGI Somnigroup International Inc. | 4.19% | 272,017 | $22.9M | New |
| VSTS Vestis Corp. | 2.61% | 3,148,425 | $14.3M | Add +64.0% |
| CHTR Charter Communications Inc. Class A | 1.38% | 27,408 | $7.5M | Reduce -76.2% |
Portfolio Sells Q2 2025 → Q3 2025
| CHTR Charter Communications Inc. Class A | Reduce -76.2% | 1.38% | −9.65 |
| SCHW Schwab (charles) Corp. | Sold out | 0.00% | −7.74 |
| MLNK Meridianlink Inc. | Sold out | 0.00% | −2.64 |
| GWRE Guidewire Software Inc. | Reduce -1.2% | 5.29% | −1.74 |
| AYI Acuity Inc. | Reduce -1.2% | 12.15% | −1.50 |
| XPO Xpo Inc. | Reduce -1.2% | 4.50% | −1.20 |
| APPF Appfolio Inc. Class A | Reduce -1.1% | 6.69% | −0.55 |
| APP AppLovin Corp. Class A | Reduce -1.2% | 45.23% | +16.64 |
Portfolio Buys Q2 2025 → Q3 2025
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 8 | $432.6M | APP, VSTS, AYI, GWRE, SGI |
| Q1 2026 | 9 | $395.1M | APP, GWRE, AYI, APPF, SGI |
| Q4 2025 | 12 | $514.4M | APP, AYI, SGI, APPF, PCOR |
| Q3 2025 | 11 | $546.9M | APP, AYI, PCOR, APPF, LBRDK |
| Q2 2025 | 11 | $426.8M | APP, AYI, CHTR, PAR, SCHW |
| Q1 2025 | 10 | $376.7M | APP, CHTR, AYI, PAR, SCHW |
| Q4 2024 | 9 | $426.2M | APP, PAR, AYI, GWRE, APPF |
| Q3 2024 | 9 | $286.6M | APP, GWRE, AYI, PAR, APPF |
| Q2 2024 | 9 | $239.4M | APP, APPF, PAR, AYI, GWRE |
| Q1 2024 | 9 | $222.8M | APP, AYI, APPF, PCOR, GWRE |