Madison Avenue Partners, LP
In its 13F for Q2 2026 (holdings as of June 30, 2026, filed August 14, 2026), Madison Avenue Partners, LP reported 25 stock positions worth $2.3 billion. Its top holding was Graham Class B (GHC) at 12.1% of the portfolio, followed by Invitation Homes (INVH, 10.8%) and Markel (MKL, 9.4%). Compared with Q1 2026, it opened 7 new positions, sold out of 9, added to 7 and reduced 8. The biggest buy was a new position in Invitation Homes (INVH) and the biggest sale Sandisk (SNDK, shares −98%).
- Most Recent 13F
- Q2 2026
- Location
- NEW YORK, NY
- CIK
- 0001801265
- Portfolio Value
- $2.3B (Q2 2026)
- SEC Filing
- 0001801265-26-000005 ↗ filed Aug 14, 2026
Holdings Value
Holdings 25 stocks · $2.3B
| GHC Graham Holdings Co. Class B | 12.11% | 246,368 | $281.2M | Add +0.2% |
| INVH Invitation Homes Inc. | 10.84% | 8,335,309 | $251.8M | New |
| MKL Markel Group Inc. | 9.44% | 112,325 | $219.4M | Add +27.8% |
| CPNG Coupang Inc. | 9.31% | 12,457,195 | $216.4M | Add +33.0% |
| MICC The Magnum Ice Cream Co. NV | 8.16% | 10,892,592 | $189.6M | Reduce -4.8% |
| TBPH Theravance Biopharma Inc. | 6.74% | 9,212,252 | $156.6M | Reduce -3.1% |
| SOLV Solventum Corp. | 5.78% | 1,741,221 | $134.3M | Reduce -7.2% |
| STAA Staar Surgical Co. | 5.16% | 4,175,748 | $119.8M | Add +71.0% |
| INDV Indivior Pharmaceuticals Inc. | 5.08% | 2,874,368 | $117.9M | Reduce -33.4% |
| LKFT Lakefront Biotherapeutic-ADR | 4.45% | 3,447,807 | $103.4M | Add +39.9% |
| GMED Globus Medical Inc. Class A | 3.18% | 935,216 | $73.9M | Add +30.4% |
| OCTV Octave Intelligence Class B | 2.96% | 4,222,663 | $68.8M | New |
| BTI British American Tob-SP ADR | 2.77% | 1,043,302 | $64.4M | Reduce -7.2% |
| STGW Stagwell Inc. | 2.56% | 8,014,322 | $59.5M | No change |
| SANM Sanmina Corp. | 2.05% | 188,322 | $47.7M | New |
| PRIM Primoris Services Corp. | 1.97% | 462,058 | $45.8M | New |
| AD Array Digital Infrastructure | 1.73% | 1,109,463 | $40.2M | New |
| AIV Apartment Invt & Mgmt Co. Class A | 1.58% | 12,374,991 | $36.8M | No change |
| SNDK Sandisk Corp. | 0.95% | 9,698 | $22.1M | Reduce -98.4% |
| TPB Turning Point Brands Inc. | 0.90% | 247,823 | $21.0M | Add +0.0% |
| SBGI Sinclair Inc. | 0.85% | 1,383,470 | $19.7M | Reduce -6.1% |
| MAGN Magnera Corp. | 0.66% | 1,302,066 | $15.3M | Reduce -18.1% |
| MRP Millrose Properties | 0.39% | 298,461 | $9.0M | New |
| KROS Keros Therapeutics Inc. | 0.29% | 626,583 | $6.7M | No change |
| MNRO Monro Inc. | 0.07% | 95,966 | $1.6M | New |
Portfolio Sells Q1 2026 → Q2 2026
| SNDK Sandisk Corp. | Reduce -98.4% | 0.95% | −16.15 |
| ICLR Icon PLC | Sold out | 0.00% | −6.17 |
| MOH Molina Healthcare Inc. | Sold out | 0.00% | −3.67 |
| WLY Wiley (john) & Sons Class A | Sold out | 0.00% | −1.12 |
| PRMB Primo Brands Corp. | Sold out | 0.00% | −1.08 |
| DNOW Dnow Inc. | Sold out | 0.00% | −0.71 |
| INDV Indivior Pharmaceuticals Inc. | Reduce -33.4% | 5.08% | −0.64 |
| CBC Central Bancompany | Sold out | 0.00% | −0.46 |
| PAR Par Technology Corp. | Sold out | 0.00% | −0.26 |
| BTI British American Tob-SP ADR | Reduce -7.2% | 2.77% | −0.08 |
| FSP Franklin Street Properties C | Sold out | 0.00% | −0.03 |
| SN Sharkninja Inc. | Sold out | 0.00% | −0.03 |
| MAGN Magnera Corp. | Reduce -18.1% | 0.66% | +0.00 |
| SBGI Sinclair Inc. | Reduce -6.1% | 0.85% | +0.02 |
| TBPH Theravance Biopharma Inc. | Reduce -3.1% | 6.74% | +0.03 |
| SOLV Solventum Corp. | Reduce -7.2% | 5.78% | +0.46 |
| MICC The Magnum Ice Cream Co. NV | Reduce -4.8% | 8.16% | +0.72 |
Portfolio Buys Q1 2026 → Q2 2026
| INVH Invitation Homes Inc. | New | 10.84% | +10.84 |
| STAA Staar Surgical Co. | Add +71.0% | 5.16% | +3.17 |
| OCTV Octave Intelligence Class B | New | 2.96% | +2.96 |
| MKL Markel Group Inc. | Add +27.8% | 9.44% | +2.13 |
| SANM Sanmina Corp. | New | 2.05% | +2.05 |
| PRIM Primoris Services Corp. | New | 1.97% | +1.97 |
| AD Array Digital Infrastructure | New | 1.73% | +1.73 |
| CPNG Coupang Inc. | Add +33.0% | 9.31% | +1.63 |
| LKFT Lakefront Biotherapeutic-ADR | Add +39.9% | 4.45% | +1.23 |
| GHC Graham Holdings Co. Class B | Add +0.2% | 12.11% | +0.80 |
| GMED Globus Medical Inc. Class A | Add +30.4% | 3.18% | +0.49 |
| MRP Millrose Properties | New | 0.39% | +0.39 |
| MNRO Monro Inc. | New | 0.07% | +0.07 |
| TPB Turning Point Brands Inc. | Add +0.0% | 0.90% | −0.03 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 25 | $2.3B | GHC, INVH, MKL, CPNG, MICC |
| Q1 2026 | 27 | $2.3B | SNDK, GHC, CPNG, MICC, MKL |
| Q4 2025 | 23 | $2.3B | SNDK, GHC, GMED, INDV, MKL |
| Q3 2025 | 20 | $1.7B | GHC, SNDK, MKL, INDV, GMED |
| Q2 2025 | 26 | $1.5B | GHC, SOLV, MKL, SNDK, INDV |
| Q1 2025 | 22 | $1.2B | GHC, SOLV, MKL, WLY, TBPH |
| Q4 2024 | 15 | $944.4M | GHC, SOLV, WLY, TBPH, ACHC |
| Q3 2024 | 25 | $1.1B | SOLV, GHC, LBRDK, WLY, GMED |
| Q2 2024 | 20 | $791.6M | GHC, SOLV, GMED, TBPH, WLY |
| Q1 2024 | 18 | $619.9M | GHC, SN, TBPH, WLY, HES |