M28 Capital Management LP — 13F Holdings & Portfolio
CIK 1807489 · latest 13F-HR filed 2026-08-13
M28 Capital Management LP manages $47.2M in 13F-reported U.S. long-equity assets across 9 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are WVE (56.53%), IVVD (17.11%), TGTX (10.29%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 0 new positions and exited 0; 5 existing positions rose in reported value and 2 fell.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
Long-equity book
Distinct positions
Filed 2026-08-13
vs 2026-03-31
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q2 26Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.
Sector mix
% of 13F valueSectors from each company's SIC code; funds and ETFs grouped separately.
Biggest buys and sells
Q1 26 → Q2 26Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.
13F assets and positions
4 quartersTotal reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.
Top positions over time
reported valueThe eight largest current positions, valued at each quarter end.
Concentration
top 10 = 100%Cumulative share of the portfolio held in the largest N positions.
As of the firm’s regulatory filing dated Apr 22, 2026.
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| Elia, Marc, William Control | CHIEF INVESTMENT OFFICER / LIMITED PARTNER since Oct 2019 | 75% or more | Individual |
| M28 CAPITAL MANAGEMENT GP LLC Control | GENERAL PARTNER since Oct 2019 | Less than 5% | Domestic Entity |
| Elia, Marc, William Control Indirect owner via M28 CAPITAL MANAGEMENT GP LLC | MANAGING MEMBER since Oct 2019 | 75% or more | Individual |
Ownership & leadership changes · 4 filings with changes since Feb 14, 2020
From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.
- No longer listedTALIERCIO, CHRISTOPHER, MICHAEL · PRESIDENT · Less than 5% · control person · listed since Oct 2019
- ChangedTALIERCIO, CHRISTOPHER, MICHAEL · title PRESIDENT & CHIEF COMPLIANCE OFFICER → PRESIDENT
- ChangedElia, Marc, William · title CHIEF INVESTMENT OFFICER / CHIEF INVESTMENT OFFICER / LIMITED PARTNER / LIMITED PARTNER → CHIEF INVESTMENT OFFICER / LIMITED PARTNER
- ChangedElia, Marc, William · title CHIEF INVESTMENT OFFICER / LIMITED PARTNER → CHIEF INVESTMENT OFFICER / CHIEF INVESTMENT OFFICER / LIMITED PARTNER / LIMITED PARTNER
- ListedElia, Marc, William · CHIEF INVESTMENT OFFICER / LIMITED PARTNER · 75% or more · control person
- ListedElia, Marc, William · MANAGING MEMBER · 75% or more · indirect via M28 CAPITAL MANAGEMENT GP LLC · control person
- ListedM28 CAPITAL MANAGEMENT GP LLC · GENERAL PARTNER · Less than 5% · control person
- ListedTALIERCIO, CHRISTOPHER, MICHAEL · PRESIDENT & CHIEF COMPLIANCE OFFICER · Less than 5% · control person
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
Top Adds (vs prior quarter)
- TG THERAPEUTICS INC$1.9M +65.4%
- ARROWHEAD PHARMACEUTICALS IN$693.2K +30.0%
- FRACTYL HEALTH INC$624.8K +73.5%
- SILENCE THERAPEUTICS PLC$577.9K +108.3%
- PROQR THRAPEUTICS N V$143.9K +14.8%
M28 Capital Management LP Holdings (2026-06-30)
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | WAVE LIFE SCIENCES LTD | WVE | Y95308105 | $26.7M | 56.53% | 4,588,284 | SH |
| 2 | INVIVYD INC | IVVD | 00534A102 | $8.1M | 17.11% | 9,248,250 | SH |
| 3 | TG THERAPEUTICS INC | TGTX | 88322Q108 | $4.9M | 10.29% | 88,354 | SH |
| 4 | ARROWHEAD PHARMACEUTICALS IN | ARWR | 04280A100 | $3.0M | 6.37% | 36,851 | SH |
| 5 | FRACTYL HEALTH INC | GUTS | 35168W103 | $1.5M | 3.13% | 1,856,117 | SH |
| 6 | PROQR THRAPEUTICS N V | PRQR | N71542109 | $1.1M | 2.37% | 599,793 | SH |
| 7 | SILENCE THERAPEUTICS PLC | SLN | 82686Q101 | $1.1M | 2.36% | 101,203 | SH |
| 8 | ROCKET PHARMACEUTICALS INC | RCKT | 77313F106 | $721.2K | 1.53% | 210,871 | SH |
| 9 | CURIS INC | CRIS | 231269309 | $148.7K | 0.32% | 284,889 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-13 | $47.2M | 9 | 0000902664-26-003441 |
| 2026-03-31 | 2026-05-14 | $53.8M | 9 | 0000902664-26-002442 |
| 2025-12-31 | 2026-02-13 | $137.6M | 9 | 0000902664-26-000993 |
| 2025-09-30 | 2025-11-13 | $68.0M | 9 | 0000902664-25-004910 |
STAMFORD, CT 06902