CIK: 0001801265
Total reported value
$2.3B
Reporting period: 2026-03-31 · Number of holdings: 27
Madison Avenue Partners, LP disclosed 27 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $2.3B and a quarterly turnover rate of 53.2%.
Browse other institutions with $1B to $10B AUMBrowse other institutions starting with "M"
Madison Avenue Partners, LP's disclosed holdings carry a Herfindahl concentration index of 0.079 — mathematically equivalent to about 13 equally-sized positions, well below its 27 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 1.09), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Trim GMED
-72.7% -$167.3M
Trim INDV
-31.3% -$93.8M
Add MICC
+78.0% $69.2M
Add SNDK
-56.8% $52.8M
Trim SOLV
-5.6% -$35.0M
Trim MOH
0.0% -$25.5M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | SNDK | Sandisk CORP | Stock-Tech | 17.10% | +2.47% | -56.84% | |
| 2 | GHC | Graham Holdings Co-class B | Stock-Industrials | 11.30% | -0.30% | — | |
| 3 | CPNG | Coupang INC | Stock-Consumer Disc | 7.69% | +7.69% | NEW | |
| 4 | MICC | The Magnum Ice Cream Company N. | Stock-Consumer Staples | 7.44% | +3.06% | +78.02% | |
| 5 | MKL | Markel Group INC | Stock-Financials | 7.32% | -0.80% | — | |
| 6 | TBPH | Theravance Biopharma, Inc. | Stock-Other | 6.71% | -0.94% | — | |
| 7 | ICLR | ICON Public Limited Company | Stock-Healthcare | 6.17% | +6.17% | NEW | |
| 8 | INDV | Indivior Pharmaceuticals INC | Stock-Other | 5.72% | -3.96% | -31.29% | |
| 9 | SOLV | Solventum CORP | Stock-Healthcare | 5.33% | -1.44% | -5.65% | |
| 10 | MOH | Molina Healthcare INC | Stock-Healthcare | 3.67% | -1.06% | — | |
| 11 | LKFT | Lakefront Biotherapeutic-adr | Stock-Other | 3.22% | +0.11% | +11.39% | |
| 12 | BTI | British American Tob-sp Adr | Stock-Consumer Staples | 2.86% | -0.12% | -8.17% | |
| 13 | GMED | Globus Medical INC - A | Stock-Healthcare | 2.69% | -7.16% | -72.67% | |
| 14 | STGW | Stagwell INC | Stock-Other | 2.19% | +0.51% | — | |
| 15 | AIV | Apartment Invt & Mgmt Co -a | Stock-Other | 2.19% | +2.19% | NEW | |
| 16 | STAA | Staar Surgical Co | Stock-Other | 1.99% | +1.99% | NEW | |
| 17 | WLY | Wiley (john) & Sons-class A | Stock-Other | 1.12% | -0.39% | -40.87% | |
| 18 | PRMB | Primo Brands CORP | Stock-Consumer Staples | 1.08% | +1.08% | NEW | |
| 19 | TPB | Turning Point Brands INC | Stock-Other | 0.93% | -0.22% | — | |
| 20 | SBGI | Sinclair INC | Stock-Other | 0.83% | +0.23% | +61.98% | |
| 21 | DNOW | Dnow INC | Stock-Other | 0.71% | +0.71% | NEW | |
| 22 | MAGN | Magnera CORP | Stock-Other | 0.66% | -0.50% | -10.67% | |
| 23 | CBC | Central Bancompany | Stock-Other | 0.46% | -0.57% | -55.23% | |
| 24 | KROS | Keros Therapeutics INC | Stock-Other | 0.30% | -0.42% | -23.93% | |
| 25 | PAR | Par Technology Corp/del | Stock-Other | 0.26% | +0.26% | NEW | |
| 26 | FSP | Franklin Street Properties C | Stock-Other | 0.03% | -0.06% | -52.07% | |
| 27 | SN | SharkNinja, Inc. | Stock-Consumer Disc | 0.03% | — | — |
Performance for Q3 2026
+10.3%
Performance Last 4 Quarters
+29.1%
Based on 56% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 27 | $2.3B | 53 | |
| 2025-12-31 | 23 | $2.3B | 65 | |
| 2025-09-30 | 20 | $1.7B | 75 | |
| 2025-06-30 | 26 | $1.5B | 0 | |
| 2025-03-31 | 22 | $1.2B | 100 | |
| 2024-12-31 | 15 | $944.4M | 0 | |
| 2024-09-30 | 25 | $1.1B | 0 | |
| 2024-06-30 | 20 | $791.6M | 0 | |
| 2024-03-31 | 18 | $619.9M | 0 | |
| 2023-12-31 | 19 | $708.3M | 0 | |
| 2023-09-30 | 20 | $704.7M | 0 | |
| 2023-06-30 | 19 | $458.3M | 0 | |
| 2023-03-31 | 18 | $464.9M | 0 | |
| 2022-12-31 | 22 | $564.5M | 0 | |
| 2022-09-30 | 18 | $466.1M | 0 | |
| 2022-06-30 | 16 | $488.8M | 0 | |
| 2022-03-31 | 18 | $535.6M | 0 | |
| 2021-12-31 | 16 | $461.9M | 0 | |
| 2021-09-30 | 17 | $451.3M | 0 | |
| 2021-06-30 | 14 | $334.8M | 99 | |
| 2021-03-31 | 14 | $326.4M | 47 | |
| 2020-12-31 | 12 | $274.9M | 79 | |
| 2020-09-30 | 16 | $278.8M | 33 | |
| 2020-06-30 | 18 | $253.6M | 74 | |
| 2020-03-31 | 18 | $201.7M | 100 | |
| 2019-12-31 | 15 | $115.9M | 0 |
Madison Avenue Partners, LP's most significant position changes for 2026-03-31: New buy: Coupang INC (CPNG); New buy: ICON Public Limited Company (ICLR); Sold out: Solstice Adv Materials INC (SOLS); Sold out: Unifirst Corp/ma (UNF); New buy: Apartment Invt & Mgmt Co -a (AIV).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | MICC | The Magnum Ice Cream Company N. | +3.1% | +78.02% | Add |
| 2 | SNDK | Sandisk CORP | +2.5% | -56.84% | Trim |
| 3 | STGW | Stagwell INC | +0.5% | — | Unchanged |
| 4 | SBGI | Sinclair INC | +0.2% | +61.98% | Add |
| 5 | LKFT | Lakefront Biotherapeutic-adr | +0.1% | +11.39% | Add |
| 6 | SN | SharkNinja, Inc. | — | — | Unchanged |
| 7 | FSP | Franklin Street Properties C | -0.1% | -52.07% | Trim |
| 8 | BTI | British American Tob-sp Adr | -0.1% | -8.17% | Trim |
| 9 | TPB | Turning Point Brands INC | -0.2% | — | Unchanged |
| 10 | GHC | Graham Holdings Co-class B | -0.3% | — | Unchanged |
| 11 | WLY | Wiley (john) & Sons-class A | -0.4% | -40.87% | Trim |
| 12 | KROS | Keros Therapeutics INC | -0.4% | -23.93% | Trim |
| 13 | MAGN | Magnera CORP | -0.5% | -10.67% | Trim |
| 14 | CBC | Central Bancompany | -0.6% | -55.23% | Trim |
| 15 | MKL | Markel Group INC | -0.8% | — | Unchanged |
| 16 | TBPH | Theravance Biopharma, Inc. | -0.9% | — | Unchanged |
| 17 | MOH | Molina Healthcare INC | -1.1% | — | Unchanged |
| 18 | SOLV | Solventum CORP | -1.4% | -5.65% | Trim |
| 19 | INDV | Indivior Pharmaceuticals INC | -4% | -31.29% | Trim |
| 20 | GMED | Globus Medical INC - A | -7.2% | -72.67% | Trim |
| 21 | CPNG | Coupang INC | — | NEW | New buy |
| 22 | ICLR | ICON Public Limited Company | — | NEW | New buy |
| 23 | SOLS | Solstice Adv Materials INC | — | EXIT | Sold out |
| 24 | UNF | Unifirst Corp/ma | — | EXIT | Sold out |
| 25 | AIV | Apartment Invt & Mgmt Co -a | — | NEW | New buy |
| 26 | STAA | Staar Surgical Co | — | NEW | New buy |
| 27 | PRMB | Primo Brands CORP | — | NEW | New buy |
| 28 | DNOW | Dnow INC | — | NEW | New buy |
| 29 | PAR | Par Technology Corp/del | — | NEW | New buy |
| 30 | WK | Workiva INC | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-15 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-17 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-14 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-14 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-15 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-14 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-14 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-14 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-15 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-16 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-14 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-14 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-15 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-14 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-14 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-15 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-16 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-14 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-15 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-16 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-17 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-12 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-11-16 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-14 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-05-22 | Amendment | View on EDGAR |
| 2020-03-31 | 2020-05-15 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-14 | 13F-HR | View on EDGAR |
Institutions with a similar AUM
CIK 0001649592
Total reported value
$2.3B
230 stks
2016-09-30
Stale — no recent filing
AUM within 0.0% of this institution
CIK 0001121330
Total reported value
$2.3B
426 stks
2026-03-31
AUM within 0.1% of this institution
CIK 0001911284
Total reported value
$2.3B
242 stks
2026-03-31
AUM within 0.1% of this institution
Institutions with overlapping top holdings
CIK 0000104889
Total reported value
$966.7M
6 stks
2026-03-31
1 of the top 5 holdings overlap, including Markel Group INC
CIK 0000351051
Total reported value
$577.0M
5 stks
2026-03-31
1 of the top 5 holdings overlap, including Coupang INC
CIK 0000846600
Total reported value
$232.1M
55 stks
2026-03-31
1 of the top 5 holdings overlap, including Markel Group INC