Stocks/Funds/CIK 1346824

RA CAPITAL MANAGEMENT, L.P.

long-term holder
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1346824
Assets
$9.44B
+57.6% YoY
Holdings
85
Lifetime alpha vs market
-16.46% annual
Average hold time
2.2 yr
median 1.3 yr

Quarterly history

Cum return -26% vs S&P +52% · α -78% lifetimeAUM $9.4B · peak $9.8BFlow $-203M (-2%)2016-062017-122019-062020-122022-062023-122025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
+3.63%
adds when stocks drop
when a holding falls −10%+
Middle response
-0.79%
baseline attrition
Rally response
+3.27%
adds into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
$2.35B24.9%10.5 yr
PCVXVaxcyte, Inc.$667M7.1%+53.9%6.0 yr
RYTMRhythm Pharmaceuticals, $580M6.1%+64.2%8.0 yr
TYRATyra Biosciences, Inc.$467M5.0%+311.8%4.8 yr
SIONSionna Therapeutics, Inc$397M4.2%+283.3%1.3 yr
EWTXEdgewise Therapeutics, I$328M3.5%+43.2%3.5 yr
$306M3.2%3.5 yr
NUVLNuvalent, Inc.$260M2.8%+44.5%1.3 yr
DNTHDianthus Therapeutics, I$219M2.3%+362.6%2.3 yr
MLYSMineralys Therapeutics, $208M2.2%+70.6%3.3 yr
SGPSpyGlass Pharma, Inc. Co$208M2.2%0.3 yr
WVEWave Life Sciences Ltd.$196M2.1%-10.3%10.5 yr
SEPNSepterna, Inc.$168M1.8%+315.0%1.5 yr
IRONDisc Medicine, Inc.$157M1.7%+28.8%1.3 yr
JANXJanux Therapeutics, Inc.$156M1.6%-48.5%5.0 yr

Portfolio composition (YoY)

Industry mix
Biotechnology66.7%+2.5pp$6.30B
Unknown32.1%-0.8pp$3.03B
Medical - Devices0.4%-1.8pp$33M
Medical - Healthcare Information Services0.3%+0.0pp$28M
Medical - Diagnostics & Research0.2%+0.0pp$22M
Information Technology Services0.1%$13M
Shell Companies0.1%$13M
Country
US63.2%+0.9pp
Unknown32.1%-0.8pp
SG2.1%-0.4pp
IE1.1%-0.1pp
CN1.1%+0.4pp
AU0.2%
KY0.1%
Top 5: 47.3% · Top 10: 61.3% · Top 25: 82.3%

Winners

TickerPrev $PnLYoY %
SION$109M+0.31B283.3%
TYRA$99M+0.31B311.8%
PCVX$460M+0.25B53.9%
RYTM$322M+0.21B64.2%
DNTH$52M+0.19B362.6%

Losers

TickerPrev $PnLYoY %
JANX$302M-0.15B-48.5%
SPRY$137M-0.05B-36.2%
ZLAB$47M-0.02B-48.0%
WVE$147M-0.02B-10.3%
GERN$96M-0.01B-6.3%

Top buys this quarter · 15

SGP SpyGlass Pharma, Inc. Common Snew+$208M
SRPT Sarepta Therapeutics, Inc.new+$85M
DNTH Dianthus Therapeutics, Inc.+$84M
ZLAB Zai Lab Limited+$83M
NUVL Nuvalent, Inc.+$67M
WVE Wave Life Sciences Ltd.+$196M
DMRA Galecto, Inc.new+$62M
XNCR Xencor, Inc.+$52M
PCVX Vaxcyte, Inc.+$44M
IPSC Century Therapeutics, Inc.+$38M

Top sells this quarter · 14

BLTE Belite Bio, Incexit$69M
MDLN Medline Inc.exit$15M
TVTX Travere Therapeutics, Inc.$12M
CTNM Contineum Therapeutics, Inc. C$12M
FDMT 4D Molecular Therapeutics, Inc$42M
KIDS OrthoPediatrics Corp.exit$2M
PGNY Progyny, Inc.exit$2M
HCAT Health Catalyst, Inc.exit$1M
MGNX MacroGenics, Inc.$1M
ADGI Adagio Therapeutics, Inc.exit$0M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$9.44B85+53.58%+17.59%+35.99%-0.20B
2025-12-31$9.76B71+6.46%+17.72%-11.26%+0.23B
2025-09-30$8.12B67-28.85%+17.52%-46.37%+0.18B
2025-06-30$5.94B63-40.20%+14.94%-55.14%+0.00B
2025-03-31$5.99B85-46.12%+8.30%-54.42%+0.84B
2024-12-31$7.51B89-13.37%+24.89%-38.25%+0.71B
2024-09-30$8.67B81+29.67%+36.04%-6.37%+0.18B
2024-06-30$7.56B78+4.43%+24.49%-20.06%+0.54B
2024-03-31$7.86B76+30.05%+29.62%+0.43%+0.81B
2023-12-31$6.40B62+0.26%+26.18%-25.91%+0.44B
2023-09-30$5.08B66-24.19%+21.57%-45.75%+0.29B
2023-06-30$5.30B54-4.75%+19.42%-24.17%+0.39B
2023-03-31$4.42B59-31.12%-7.82%-23.30%+0.23B
2022-12-31$4.93B70-11.17%+7.56%-18.73%+0.77B
2022-09-30$4.69B81+13.65%-4.93%+18.57%+0.43B
2022-06-30$3.75B88-19.59%-16.11%-3.48%+0.07B