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M28 Capital Management LP

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13F filer, CIK 1807489, STAMFORD, CT

M28 Capital Management LP reported $72,977,341 across 11 holdings for the quarter ended 2025-03-31, in a 13F-HR filed 2025-05-14. Its ten largest share positions make up 99.28% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0000902664-25-002321

Period
2025-03-31
Reported value
$73M
Holdings
11
Top 10 weight
99.28%
New
0
Sold out
0

Largest buys vs the previous quarter

None.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
SPRINGWORKS THERAPEUTICS INCreduced-55,200-$2.44M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q1 2025

Share positions as resolved from 13F-HR 0000902664-25-002321, largest first. % of portfolio is the value over $72,977,341, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
WVEWAVE LIFE SCIENCES LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 6,164,548 shares; 2024Q4: 5,664,548 shares; 2025Q1: 5,664,548 shares 5,664,548$45.8M62.72%0Timeline
TGTXTG THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 161,600 shares; 2024Q4: 161,600 shares; 2025Q1: 161,600 shares 161,600$6.37M8.73%0Timeline
IVVDINVIVYD INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 9,248,250 shares; 2024Q4: 9,248,250 shares; 2025Q1: 9,248,250 shares 9,248,250$5.6M7.67%0Timeline
BBIOBRIDGEBIO PHARMA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 121,200 shares; 2024Q4: 121,200 shares; 2025Q1: 121,200 shares 121,200$4.19M5.74%0Timeline
RCKTROCKET PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 385,680 shares; 2024Q4: 385,680 shares; 2025Q1: 385,680 shares 385,680$2.57M3.53%0Timeline
SPRINGWORKS THERAPEUTICS INCSPRINGWORKS THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 110,400 shares; 2024Q4: 110,400 shares; 2025Q1: 55,200 shares 55,200$2.44M3.34%-55,200
GUTSFRACTYL HEALTH INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,856,117 shares; 2024Q4: 1,856,117 shares; 2025Q1: 1,856,117 shares 1,856,117$2.21M3.03%0Timeline
PRQRPROQR THRAPEUTICS N VQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,019,498 shares; 2024Q4: 1,019,498 shares; 2025Q1: 1,019,498 shares 1,019,498$1.36M1.86%0Timeline
CRISCURIS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 421,951 shares; 2024Q4: 521,059 shares; 2025Q1: 521,059 shares 521,059$1.09M1.5%0Timeline
ARWRARROWHEAD PHARMACEUTICALS INQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 67,400 shares; 2024Q4: 67,400 shares; 2025Q1: 67,400 shares 67,400$859K1.18%0Timeline
SLNSILENCE THERAPEUTICS PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 185,100 shares; 2024Q4: 185,100 shares; 2025Q1: 185,100 shares 185,100$522K0.72%0Timeline

How Q1 2025 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0000902664-25-002321 base2025-05-14acceptance time not in the bulk data set