Stocks/Funds/CIK 1813845

BIOS Capital Management, LP

microcap filerconcentrated
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1813845
Assets
$53M
-33.2% YoY
Holdings
6
Lifetime alpha vs market
-43.73% annual
Average hold time
1.3 yr
median 1.5 yr

Quarterly history

Cum return -45% vs S&P +13% · α -58% lifetimeAUM $53M · peak $94MFlow $0M (+0%)2024-122025-032025-062025-092025-122026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-1.20%
trims when stocks drop
when a holding falls −10%+
Middle response
+0.87%
steady accumulation
Rally response
+0.23%
adds into rallies
when a holding rises +10%+

Top positions · 6

Ticker$ value% portYoYHold time
ACTUActuate Therapeutics Inc$28M52.1%-59.5%1.5 yr
IRDOpus Genetics, Inc.$17M31.7%+363.4%1.5 yr
CGTXCognition Therapeutics, $5M8.6%+80.5%1.5 yr
RNTXRein Therapeutics Inc.$3M4.9%-26.6%1.5 yr
LTRNLantern Pharma Inc.$1M2.2%-61.3%1.5 yr
INABIN8bio, Inc.$0M0.5%0.5 yr

Portfolio composition (YoY)

Industry mix
Biotechnology95.1%+0.7pp$50M
Medical - Pharmaceuticals4.9%+1.1pp$3M
Country
US100.0%+1.8pp
Top 5: 99.5% · Top 10: 100.0% · Top 25: 100.0%

Winners

TickerPrev $PnLYoY %
IRD$1M+0.00B363.4%
CGTX$3M+0.00B80.5%
RNTX$3M-0.00B-26.6%
LTRN$4M-0.00B-61.3%
ACTU$67M-0.04B-59.5%

Losers

TickerPrev $PnLYoY %
ACTU$67M-0.04B-59.5%
LTRN$4M-0.00B-61.3%
RNTX$3M-0.00B-26.6%

Top buys this quarter · 1

RNTX Rein Therapeutics Inc.+$0M

Top sells this quarter · 2

INAB IN8bio, Inc.$0M
LTRN Lantern Pharma Inc.$0M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$53M6-35.16%+17.59%-52.75%+0.00B
2025-12-31$83M6-14.17%+17.72%-31.89%-0.00B
2025-09-30$89M6+21.51%+8.12%+13.39%+0.00B
2025-06-30$73M6-10.70%+10.78%-21.48%+0.00B
2025-03-31$79M6-15.39%-4.27%-11.12%-0.00B
2024-12-31$94M6