Stocks/Funds/CIK 1807489

M28 Capital Management LP

microcap filerlong-term holderconcentrated
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1807489
Assets
$54M
-26.3% YoY
Holdings
9
Lifetime alpha vs market
-27.95% annual
Average hold time
3.8 yr
median 4.3 yr

Quarterly history

Cum return -59% vs S&P +52% · α -111% lifetimeAUM $54M · peak $138MFlow $-13M (-10%)2021-122022-092023-062024-032024-122025-092026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-0.97%
trims when stocks drop
when a holding falls −10%+
Middle response
-8.69%
baseline attrition
Rally response
-3.33%
trims into rallies
when a holding rises +10%+

Top positions · 9

Ticker$ value% portYoYHold time
WVEWave Life Sciences Ltd.$33M61.8%-10.3%4.5 yr
ADGIAdagio Therapeutics, Inc$12M22.3%4.5 yr
TGTXTG Therapeutics, Inc.$3M5.5%-15.7%4.5 yr
ARWRArrowhead Pharmaceutical$2M4.3%+392.2%3.5 yr
PRQRProQR Therapeutics N.V.$1M1.8%+21.8%4.3 yr
GUTSFractyl Health, Inc. Com$1M1.6%-61.5%2.3 yr
RCKTRocket Pharmaceuticals, $1M1.4%-46.3%4.5 yr
SLNSilence Therapeutics plc$1M1.0%+86.9%3.5 yr
$0M0.3%2.8 yr

Portfolio composition (YoY)

Industry mix
Biotechnology99.7%+1.2pp$54M
Unknown0.3%-1.2pp$0M
Country
SG61.8%-0.9pp
US35.1%+1.9pp
NL1.8%-0.1pp
GB1.0%+0.3pp
Unknown0.3%-1.2pp
Top 5: 95.7% · Top 10: 100.0% · Top 25: 100.0%

Winners

TickerPrev $PnLYoY %
ARWR$1M+0.00B392.2%
SLN$1M+0.00B86.9%
PRQR$1M+0.00B21.8%
TGTX$6M-0.00B-15.7%
RCKT$3M-0.00B-46.3%

Losers

TickerPrev $PnLYoY %
WVE$46M-0.00B-10.3%
GUTS$2M-0.00B-61.5%
RCKT$3M-0.00B-46.3%
TGTX$6M-0.00B-15.7%

Top buys this quarter · 0

No buys this quarter

Top sells this quarter · 7

WVE Wave Life Sciences Ltd.$8M
TGTX TG Therapeutics, Inc.$2M
ARWR Arrowhead Pharmaceuticals, Inc$2M
PRQR ProQR Therapeutics N.V.$1M
RCKT Rocket Pharmaceuticals, Inc.$1M
SLN Silence Therapeutics plc$0M
$0M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$54M9-4.98%+17.59%-22.57%-0.01B
2025-12-31$138M9+35.40%+17.72%+17.68%+0.00B
2025-09-30$68M9-12.32%+17.52%-29.83%+0.00B
2025-06-30$59M9-1.09%+14.94%-16.03%-0.00B
2025-03-31$73M11-10.57%+8.30%-18.87%+0.00B
2024-12-31$102M11+41.58%+24.89%+16.69%-0.02B
2024-09-30$91M11+22.51%+36.04%-13.53%-0.01B
2024-06-30$77M11-13.35%+24.49%-37.84%-0.03B
2024-03-31$135M11+21.53%+29.62%-8.09%+0.00B
2023-12-31$121M10-2.69%+26.18%-28.87%+0.02B
2023-09-30$87M11-21.09%+21.57%-42.66%+0.02B
2023-06-30$76M12-27.50%+19.42%-46.92%-0.02B
2023-03-31$88M14-60.29%-7.82%-52.47%-0.00B
2022-12-31$105M14-8.90%+7.56%-16.46%+0.02B
2022-09-30$96M12-17.80%-4.93%-12.87%+0.02B
2022-06-30$89M13-39.60%-16.11%-23.49%+0.02B