Institutional Manager · CIK 0001801265
Madison Avenue Partners, LP
NEW YORK, NY · File #028-20035
Latest AUM
$2.33B
Positions
23
Top-10 Concentration
83.2%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| NEW | INDIVIOR PLC | INDV | +6,280,502 | +$225.3M | $0 |
| EXITED | INDIVIOR PLC | G4766E116 | -6,463,585 | -$155.8M | $0 |
| REDUCE | SANDISK CORP | SNDK | -628,349 | -$149.2M | +$258.2M |
| NEW | SOLSTICE ADVANCED MATLS INC | 83443Q103 | +2,782,460 | +$135.2M | $0 |
| NEW | MOLINA HEALTHCARE INC | MOH | +633,877 | +$110.0M | $0 |
| NEW | MAGNUM ICE CREAM CO NV | MICC | +6,429,296 | +$101.9M | $0 |
| NEW | UNIFIRST CORP MASS | UNF | +303,844 | +$58.6M | $0 |
| EXITED | NEWS CORP NEW | 65249B109 | -1,453,322 | -$44.6M | $0 |
| REDUCE | KEROS THERAPEUTICS INC | KROS | -1,884,511 | -$38.4M | +$12.3M |
| EXITED | APARTMENT INVT & MGMT CO | 03748R747 | -3,617,314 | -$28.7M | $0 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 202523 pos · $2.33B
- 13F HOLDINGS REPORTQ/E Sep 202520 pos · $1.68B
- 13F HOLDINGS REPORTQ/E Jun 202526 pos · $1.50B
- 13F HOLDINGS REPORTQ/E Mar 202522 pos · $1.18B
- 13F HOLDINGS REPORTQ/E Dec 202415 pos · $944.4M
- 13F HOLDINGS REPORTQ/E Sep 202425 pos · $1.08B
- 13F HOLDINGS REPORTQ/E Jun 202420 pos · $791.6M
- 13F HOLDINGS REPORTQ/E Mar 202418 pos · $619.9M
- 13F HOLDINGS REPORTQ/E Dec 202320 pos · $704.7M
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | SANDISK CORP | SNDK | 1,434,172 | $340.4M | 14.63% |
| 2 | GRAHAM HLDGS CO | GHM | 245,829 | $270.1M | 11.60% |
| 3 | GLOBUS MED INC | GMED | 2,624,751 | $229.2M | 9.85% |
| 4 | INDIVIOR PLC | INDV | 6,280,502 | $225.3M | 9.68% |
| 5 | MARKEL GROUP INC | MKL | 87,889 | $188.9M | 8.12% |
| 6 | THERAVANCE BIOPHARMA INC | TBPH | 9,511,150 | $178.0M | 7.65% |
| 7 | SOLVENTUM CORP | SOLV | 1,988,058 | $157.5M | 6.77% |
| 8 | SOLSTICE ADVANCED MATLS INC | 83443Q103 | 2,782,460 | $135.2M | 5.81% |
| 9 | MOLINA HEALTHCARE INC | MOH | 633,877 | $110.0M | 4.73% |
| 10 | MAGNUM ICE CREAM CO NV | MICC | 6,429,296 | $101.9M | 4.38% |
| 11 | GALAPAGOS NV | GLPGF | 2,213,169 | $72.4M | 3.11% |
| 12 | BRITISH AMERN TOB PLC | 110448107 | 1,223,767 | $69.3M | 2.98% |
| 13 | UNIFIRST CORP MASS | UNF | 303,844 | $58.6M | 2.52% |
| 14 | STAGWELL INC | STGW | 8,014,322 | $39.2M | 1.68% |
| 15 | WILEY JOHN & SONS INC | 968223206 | 1,147,258 | $35.1M | 1.51% |
| 16 | MAGNERA CORP | MAGN | 1,780,649 | $27.0M | 1.16% |
| 17 | TURNING PT BRANDS INC | 90041L105 | 247,723 | $26.9M | 1.15% |
| 18 | CENTRAL BANCOMPANY | CBC | 993,879 | $24.0M | 1.03% |
| 19 | KEROS THERAPEUTICS INC | KROS | 823,707 | $16.8M | 0.72% |
| 20 | SINCLAIR INC | SBGI | 909,653 | $13.9M | 0.60% |