Madison Avenue Partners, LP
In its 13F for Q1 2024 (holdings as of March 31, 2024, filed May 15, 2024), Madison Avenue Partners, LP reported 18 stock positions worth $619.9 million. Its top holding was Graham Class B (GHC) at 26.1% of the portfolio, followed by Sharkninja (SN, 18.2%) and Theravance Biopharma (TBPH, 10.1%). Compared with Q4 2023, it opened 5 new positions, sold out of 6, added to 4 and reduced 4. The biggest buy was a new position in Wiley (john) & Sons Class A (WLY) and the biggest sale Sharkninja (SN, shares −51%).
- Most Recent 13F
- Q2 2026
- Location
- NEW YORK, NY
- CIK
- 0001801265
- Portfolio Value
- $619.9M (Q1 2024)
- SEC Filing
- 0001801265-24-000006 ↗ filed May 15, 2024
Holdings Value
Holdings 18 stocks · $619.9M
| GHC Graham Holdings Co. Class B | 26.10% | 210,717 | $161.8M | Add +0.6% |
| SN Sharkninja Inc. | 18.16% | 1,807,237 | $112.6M | Reduce -50.9% |
| TBPH Theravance Biopharma Inc. | 10.15% | 7,012,226 | $62.9M | No change |
| WLY Wiley (john) & Sons Class A | 8.41% | 1,366,771 | $52.1M | New |
| HES Hess Corp. | 7.39% | 300,270 | $45.8M | No change |
| STGW Stagwell Inc. | 7.17% | 7,147,662 | $44.5M | No change |
| GMED Globus Medical Inc. Class A | 6.09% | 703,276 | $37.7M | New |
| NNI Nelnet Inc. Class A | 4.43% | 290,213 | $27.5M | New |
| MCHB Mechanics Bancorp Class A filed as HOMESTREET INC | 2.20% | 905,022 | $13.6M | New |
| TSVT 2SEVENTY Bio Inc. | 2.10% | 2,433,222 | $13.0M | Add +38.7% |
| OVID Ovid Therapeutics Inc. | 1.80% | 3,648,509 | $11.1M | No change |
| ONL Orion Properties Inc. filed as ORION OFFICE REIT INC | 1.48% | 2,618,529 | $9.2M | Reduce -12.4% |
| FSP Franklin Street Properties C | 1.21% | 3,291,443 | $7.5M | No change |
| MACK Merrimack Pharmaceuticals Inc. | 0.92% | 387,221 | $5.7M | Reduce -30.0% |
| GOSS Gossamer Bio Inc. | 0.79% | 4,140,773 | $4.9M | Reduce -18.1% |
| CEE Central and Eastern Europe F | 0.65% | 422,823 | $4.0M | Add +54.3% |
| INDV Indivior Ltd. | 0.56% | 162,895 | $3.5M | Add +125.4% |
| ATMU Atmus Filtration Technologie | 0.40% | 76,732 | $2.5M | New |
Portfolio Sells Q4 2023 → Q1 2024
| SN Sharkninja Inc. | Reduce -50.9% | 18.16% | −8.44 |
| IART Integra Lifesciences Holding | Sold out | 0.00% | −6.41 |
| GIII G-III Apparel Group Ltd. | Sold out | 0.00% | −6.35 |
| VSTS Vestis Corp. | Sold out | 0.00% | −4.02 |
| MRTX Mirati Therapeutics Inc. | Sold out | 0.00% | −3.46 |
| ONL Orion Properties Inc. | Reduce -12.4% | 1.48% | −0.93 |
| MACK Merrimack Pharmaceuticals Inc. | Reduce -30.0% | 0.92% | −0.12 |
| RNAC Cartesian Therapeutics Inc. | Sold out | 0.00% | −0.06 |
| SAFEGUARD SCIENTIFICS INC | Sold out | 0.00% | −0.03 |
| GOSS Gossamer Bio Inc. | Reduce -18.1% | 0.79% | +0.14 |
Portfolio Buys Q4 2023 → Q1 2024
| WLY Wiley (john) & Sons Class A | New | 8.41% | +8.41 |
| GMED Globus Medical Inc. Class A | New | 6.09% | +6.09 |
| GHC Graham Holdings Co. Class B | Add +0.6% | 26.10% | +5.50 |
| NNI Nelnet Inc. Class A | New | 4.43% | +4.43 |
| MCHB Mechanics Bancorp Class A | New | 2.20% | +2.20 |
| TSVT 2SEVENTY Bio Inc. | Add +38.7% | 2.10% | +1.04 |
| INDV Indivior Ltd. | Add +125.4% | 0.56% | +0.41 |
| ATMU Atmus Filtration Technologie | New | 0.40% | +0.40 |
| CEE Central and Eastern Europe F | Add +54.3% | 0.65% | +0.27 |
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 |