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Merrimack Pharmaceuticals Inc

MACKDelisted May 10, 2024
Industry
Pharmaceutical Preparations
SEC CIK
0001274792

Merrimack Pharmaceuticals Inc was delisted on May 10, 2024; its insiders filed their last Form 4 on Dec 28, 2023; 70 institutions reported holding it in 13F filings for Q1 2024, worth $137.1M in total; no superinvestor held it.

Q1 2024 vs. Q4 2023

How the institutions holding Merrimack Pharmaceuticals Inc changed between Q4 2023 and Q1 2024.

All holders in Q1 2024All holders in Q4 2023

13F holders of MACK: Q4 2023 compared with Q1 2024
MeasureQ4 2023Q1 2024Change
Holders6770+3
Shares9.31M9.28M−26.0K (−0.3%)
Value$124.9M$137.1M+$12.3M (+9.8%)

New holders (12)

Institutions that held Merrimack Pharmaceuticals Inc at the end of Q1 2024 but not at the end of Q4 2023.

Institutions new to MACK in Q1 2024
InstitutionSharesValue% of portfolio
Johnson Investment Counsel Inc13,480$199.1K0.00%
Jane Street Group, LLC11,124$164.3K0.00%
Schonfeld Strategic Advisors LLC10,800$159.5K0.00%
Martingale Asset Management L P10,520$155.4K0.00%
Sherbrooke Park Advisers LLC10,006$147.8K0.03%
Aristides Capital LLC10,000$147.7K0.06%
Citadel Advisors LLC444$6.56K0.00%
Cornerstone Planning Group LLC231$3.46K0.00%
POM Investment Strategies, LLC69$1.02K0.00%
Nelson, Van Denburg & Campbell Wealth Management Group, LLC2$290.00%
CWM, LLC5$00.00%
Capital Advisors, Ltd. LLC28$00.00%

Sold out (9)

Institutions that held Merrimack Pharmaceuticals Inc at the end of Q4 2023 and filed for Q1 2024 without it.

Institutions that sold out of MACK in Q1 2024
InstitutionShares, Q4 2023Value, Q4 2023
Sio Capital Management, LLC288,466$3.87M
Indaba Capital Management, L.P.223,459$3.00M
Rosalind Advisors, Inc.60,000$804.6K
Kennedy Capital Management, Inc.46,202$619.6K
Allspring Global Investments Holdings, LLC11,827$158.6K
AJOVista, LLC1,544$20.7K
Headlands Technologies LLC300$4.02K
Group One Trading, L.P.236$3.17K
Federated Hermes, Inc.85$1.14K