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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.

Q4 2022 vs. Q3 2022

How the institutions holding Merrimack Pharmaceuticals Inc changed between Q3 2022 and Q4 2022.

All holders in Q4 2022All holders in Q3 2022

13F holders of MACK: Q3 2022 compared with Q4 2022
MeasureQ3 2022Q4 2022Change
Holders4147+6
Shares8.01M7.55M−457.2K (−5.7%)
Value$30.0M$86.6M+$56.5M (+188.1%)

New holders (12)

Institutions that held Merrimack Pharmaceuticals Inc at the end of Q4 2022 but not at the end of Q3 2022.

Institutions new to MACK in Q4 2022
InstitutionSharesValue% of portfolio
Sio Capital Management, LLC250,000$2.87M1.53%
OrbiMed Advisors LLC73,600$843.5K0.02%
Boothbay Fund Management, LLC64,211$735.9K0.02%
Pura Vida Investments, LLC64,100$734.6K0.12%
Millennium Management LLC16,985$195.0K0.00%
Goldman Sachs Group Inc14,142$162.1K0.00%
Freedom Wealth Alliance, LLC1,820$20.9K0.03%
JPMorgan Chase & Co354$4.00K0.00%
Barclays PLC135$1.55K0.00%
Horrell Capital Management, Inc.50$1.00K0.00%
Armstrong Advisory Group, Inc45$5160.00%
GWM Advisors LLC1,406$160.00%

Sold out (6)

Institutions that held Merrimack Pharmaceuticals Inc at the end of Q3 2022 and filed for Q4 2022 without it.

Institutions that sold out of MACK in Q4 2022
InstitutionShares, Q3 2022Value, Q3 2022
Point72 Asset Management, L.P.1,100,994$4.13M
Citadel Advisors LLC13,718$51.0K
Group One Trading, L.P.11,930$45.0K
Simplex Trading, LLC8,692$32.0K
FMR LLC1$0
City State Bank25$0