MACK — MERRIMACK PHARMACEUTICALS IN
Reported value held$27.90M
Funds holding (latest)24
Sector—
MACK (MERRIMACK PHARMACEUTICALS IN) is tracked on HoldingsHub across five years of quarterly 13F filings. 24 funds have reported positions historically, with the sum of their latest reported stakes valued at $27.90M. No fund in our coverage reported a position in the latest filing period, which typically means the stock has fallen out of the tracked funds' portfolios rather than that it cannot be bought.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
Q2 2024 — 2 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Goldman Sachs Group history | 29.81K | $450.98K | 0.00% | Add |
| Marshall Wace history | 38.22K | $1.15K | 0.00% | New |
Q1 2024 — 21 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 620.85K | $9.17M | 0.00% | Add |
| Invesco Ltd history | 277.12K | $4.09M | 0.00% | Add |
| Geode Capital Management history | 272.01K | $4.02M | 0.00% | Add |
| Northern Trust Corp history | 117.55K | $1.74M | 0.00% | Add |
| BNY Mellon history | 94.89K | $1.40M | 0.00% | Reduce |
| Citadel Advisors history | 54.84K | $810.05K | 0.00% | Add |
| Morgan Stanley history | 39.44K | $582.56K | 0.00% | Reduce |
| Charles Schwab Investment Management history | 29.63K | $437.61K | 0.00% | Hold |
| Two Sigma Investments history | 20.40K | $301.32K | 0.00% | Reduce |
| Goldman Sachs Group history | 14.47K | $213.74K | 0.00% | Reduce |
| UBS Group AG history | 12.44K | $183.77K | 0.00% | Reduce |
| JPMorgan Chase & Co history | 11.79K | $174.08K | 0.00% | Add |
| Fidelity Management & Research (FMR) history | 8.26K | $122.05K | 0.00% | Reduce |
| Bank of America Corp history | 3.96K | $58.55K | 0.00% | Reduce |
| Wells Fargo & Co history | 3.21K | $47.43K | 0.00% | Add |
| Citigroup Inc history | 1.96K | $28.89K | 0.00% | Add |
| Legal & General Investment Management America history | 980 | $14.47K | 0.00% | Reduce |
| Deutsche Bank AG history | 383 | $5.66K | 0.00% | Reduce |
| PNC Financial Services history | 165 | $2.44K | 0.00% | Add |
| Renaissance Technologies history | 162.18K | $2.40K | 0.00% | Add |
| Lazard Asset Management history | 2.83K | $41 | 0.00% | Hold |
Q4 2023 — 21 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 608.95K | $8.17M | 0.00% | Add |
| Geode Capital Management history | 259.95K | $3.49M | 0.00% | Add |
| Northern Trust Corp history | 116.91K | $1.57M | 0.00% | Add |
| Morgan Stanley history | 109.54K | $1.47M | 0.00% | Add |
| BNY Mellon history | 100.20K | $1.34M | 0.00% | Hold |
| Goldman Sachs Group history | 35.20K | $471.99K | 0.00% | Add |
| Citadel Advisors history | 34.30K | $459.96K | 0.00% | Reduce |
| Charles Schwab Investment Management history | 29.63K | $397.31K | 0.00% | Hold |
| Two Sigma Investments history | 21.83K | $292.79K | 0.00% | New |
| UBS Group AG history | 13.22K | $177.24K | 0.00% | Add |
| Bank of America Corp history | 12.52K | $167.95K | 0.00% | Add |
| Invesco Ltd history | 12.07K | $161.81K | 0.00% | New |
| Fidelity Management & Research (FMR) history | 8.92K | $119.58K | 0.00% | Reduce |
| JPMorgan Chase & Co history | 6.79K | $91.04K | 0.00% | Hold |
| Wells Fargo & Co history | 2.79K | $37.44K | 0.00% | Add |
| Citigroup Inc history | 1.57K | $21.08K | 0.00% | Add |
| Legal & General Investment Management America history | 1.29K | $17.25K | 0.00% | Hold |
| Deutsche Bank AG history | 979 | $13.13K | 0.00% | Add |
| Renaissance Technologies history | 48.90K | $656 | 0.00% | New |
| PNC Financial Services history | 8 | $107 | 0.00% | New |
| Lazard Asset Management history | 2.83K | $37 | 0.00% | Reduce |
Q3 2023 — 17 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 600.34K | $7.40M | 0.00% | Add |
| Geode Capital Management history | 251.59K | $3.10M | 0.00% | Add |
| Northern Trust Corp history | 115.37K | $1.42M | 0.00% | Reduce |
| BNY Mellon history | 99.70K | $1.23M | 0.00% | Reduce |
| Morgan Stanley history | 93.18K | $1.15M | 0.00% | Add |
| Citadel Advisors history | 85.30K | $1.05M | 0.00% | Reduce |
| Goldman Sachs Group history | 34.95K | $430.97K | 0.00% | Add |
| Charles Schwab Investment Management history | 29.63K | $365.31K | 0.00% | Hold |
| Fidelity Management & Research (FMR) history | 9.33K | $114.99K | 0.00% | Add |
| JPMorgan Chase & Co history | 6.79K | $83.68K | 0.00% | Reduce |
| Bank of America Corp history | 6.05K | $74.65K | 0.00% | Add |
| UBS Group AG history | 5.85K | $72.11K | 0.00% | Reduce |
| Wells Fargo & Co history | 2.17K | $26.79K | 0.00% | Reduce |
| Legal & General Investment Management America history | 1.29K | $15.86K | 0.00% | Hold |
| Deutsche Bank AG history | 910 | $11.22K | 0.00% | New |
| Citigroup Inc history | 24 | $296 | 0.00% | Reduce |
| Lazard Asset Management history | 3.12K | $38 | 0.00% | Hold |
Q2 2023 — 18 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 556.80K | $6.85M | 0.00% | Add |
| Geode Capital Management history | 243.80K | $3.00M | 0.00% | Add |
| Northern Trust Corp history | 115.99K | $1.43M | 0.00% | Add |
| Citadel Advisors history | 115.00K | $1.41M | 0.00% | Reduce |
| BNY Mellon history | 100.32K | $1.23M | 0.00% | Add |
| Marshall Wace history | 87.04K | $1.07M | 0.00% | Reduce |
| Morgan Stanley history | 82.69K | $1.02M | 0.00% | Add |
| Charles Schwab Investment Management history | 29.63K | $364.42K | 0.00% | New |
| Goldman Sachs Group history | 14.14K | $173.95K | 0.00% | Reduce |
| Millennium Management history | 10.75K | $132.21K | 0.00% | Reduce |
| JPMorgan Chase & Co history | 8.34K | $102.63K | 0.00% | New |
| UBS Group AG history | 6.56K | $80.68K | 0.00% | Add |
| Wells Fargo & Co history | 4.45K | $54.69K | 0.00% | Add |
| Bank of America Corp history | 3.81K | $46.92K | 0.00% | Add |
| Citigroup Inc history | 3.12K | $38.34K | 0.00% | New |
| Legal & General Investment Management America history | 1.29K | $15.82K | 0.00% | New |
| Fidelity Management & Research (FMR) history | 336 | $4.13K | 0.00% | Add |
| Lazard Asset Management history | 3.12K | $38 | 0.00% | Reduce |
Q1 2023 — 15 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 458.52K | $5.64M | 0.00% | Reduce |
| Citadel Advisors history | 353.29K | $4.34M | 0.00% | Hold |
| Invesco Ltd history | 210.51K | $2.59M | 0.00% | New |
| Geode Capital Management history | 130.16K | $1.60M | 0.00% | Reduce |
| Marshall Wace history | 98.25K | $1.21M | 0.00% | New |
| BNY Mellon history | 74.88K | $920.27K | 0.00% | Hold |
| Morgan Stanley history | 54.16K | $665.63K | 0.00% | Add |
| Goldman Sachs Group history | 34.90K | $428.90K | 0.00% | Add |
| Northern Trust Corp history | 27.95K | $343.48K | 0.00% | Add |
| UBS Group AG history | 3.13K | $38.44K | 0.00% | Add |
| Bank of America Corp history | 1.49K | $18.35K | 0.00% | Reduce |
| Fidelity Management & Research (FMR) history | 170 | $2.09K | 0.00% | New |
| Wells Fargo & Co history | 170 | $2.09K | 0.00% | Add |
| Millennium Management history | 40.20K | $494 | 0.00% | Add |
| Lazard Asset Management history | 4.95K | $60 | 0.00% | New |
New Positions (latest)
No fund opened a new position this quarter.
Fully Exited (vs previous quarter)
No tracked fund fully exited this quarter.
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q2 2024 | Q1 2024 | Q4 2023 | Q3 2023 | Q2 2023 | Q1 2023 | Q4 2022 | Q3 2022 | Q2 2022 | Q1 2022 | Q4 2021 | Q3 2021 | Q2 2021 | Q1 2021 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Goldman Sachs Group | 29.81K | 14.47K | 35.20K | 34.95K | 14.14K | 34.90K | 14.14K | — | 14.14K | — | — | — | — | — |
| Marshall Wace | 38.22K | — | — | — | 87.04K | 98.25K | — | — | — | — | — | — | — | — |
| Citadel Advisors | — | 54.84K | 34.30K | 85.30K | 115.00K | 353.29K | 353.90K | 34.12K | 28.11K | 11.30K | — | 10.62K | — | — |
| Point72 Asset Management | — | — | — | — | — | — | — | 1.10M | 335.11K | 341.69K | 341.69K | 341.69K | — | — |
| Fidelity Management & Research (FMR) | — | 8.26K | 8.92K | 9.33K | 336 | 170 | — | 1 | — | — | — | — | — | — |
| Morgan Stanley | — | 39.44K | 109.54K | 93.18K | 82.69K | 54.16K | 9.16K | 6.51K | 7.36K | 6.12K | 5.12K | 5.83K | — | — |
| JPMorgan Chase & Co | — | 11.79K | 6.79K | 6.79K | 8.34K | — | 354 | — | — | — | — | — | — | — |
| Deutsche Bank AG | — | 383 | 979 | 910 | — | — | — | — | — | — | — | — | — | — |
| Renaissance Technologies | — | 162.18K | 48.90K | — | — | — | — | — | — | — | 19.46K | 62.52K | — | — |
| Two Sigma Investments | — | 20.40K | 21.83K | — | — | — | 42.49K | 21.52K | 24.92K | 30.74K | 35.97K | 45.91K | — | — |
| Bank of America Corp | — | 3.96K | 12.52K | 6.05K | 3.81K | 1.49K | 1.68K | 1.54K | 1.54K | 1.24K | 1.26K | 2.00K | — | — |
| BNY Mellon | — | 94.89K | 100.20K | 99.70K | 100.32K | 74.88K | 74.88K | 40.95K | 40.95K | 41.00K | 41.00K | 41.00K | — | — |
| Citigroup Inc | — | 1.96K | 1.57K | 24 | 3.12K | — | — | — | — | — | — | — | — | — |
| Geode Capital Management | — | 272.01K | 259.95K | 251.59K | 243.80K | 130.16K | 134.23K | 100.81K | 100.81K | 99.66K | 96.69K | 96.69K | — | — |
| Invesco Ltd | — | 277.12K | 12.07K | — | — | 210.51K | — | — | — | — | — | — | — | — |
| Lazard Asset Management | — | 2.83K | 2.83K | 3.12K | 3.12K | 4.95K | — | — | — | — | — | — | — | — |
| Legal & General Investment Management America | — | 980 | 1.29K | 1.29K | 1.29K | — | — | — | — | — | — | — | — | — |
| Millennium Management | — | — | — | — | 10.75K | 40.20K | 16.98K | — | — | — | — | — | — | — |
| Northern Trust Corp | — | 117.55K | 116.91K | 115.37K | 115.99K | 27.95K | 25.82K | 23.98K | 23.80K | 25.06K | 25.15K | 25.15K | — | — |
| PNC Financial Services | — | 165 | 8 | — | — | — | — | — | — | — | — | — | — | — |