Stocks/Funds/CIK 1931118

SUPERSTRING CAPITAL MANAGEMENT LP

Quarterly 13F filings · Latest period 2026-03-31 · CIK 1931118
Assets
$140M
+67.0% YoY
Holdings
35
Lifetime alpha vs market
-4.39% annual
Average hold time
0.9 yr
median 0.5 yr

Quarterly history

Cum return +27% vs S&P +41% · α -14% lifetimeAUM $140M · peak $187MFlow $-50M (-27%)2023-122024-062024-122025-062025-122026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-12.95%
trims when stocks drop
when a holding falls −10%+
Middle response
-0.39%
baseline attrition
Rally response
-26.74%
trims into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
SMMTSummit Therapeutics Inc.$17M12.1%-1.7%1.0 yr
IMVTImmunovant, Inc.$9M6.3%+45.3%1.3 yr
COGTCogent Biosciences, Inc.$9M6.2%+542.6%1.5 yr
SVRASavara Inc.$9M6.2%+97.1%2.5 yr
URGNUroGen Pharma Ltd.$7M5.0%+62.6%2.0 yr
DFTXDefinium Therapeutics, I$7M4.7%0.3 yr
VIRVir Biotechnology, Inc.$7M4.7%+38.3%0.5 yr
PCVXVaxcyte, Inc.$6M4.6%+53.9%0.5 yr
CLDXCelldex Therapeutics, In$6M4.1%+74.8%0.5 yr
SIONSionna Therapeutics, Inc$6M4.0%+283.3%0.5 yr
GMABGenmab A/S$5M3.8%+37.0%0.5 yr
ZLABZai Lab Limited$5M3.7%-48.0%2.0 yr
VRTXVertex Pharmaceuticals I$5M3.5%-7.9%0.3 yr
IQVIQVIA Holdings Inc.$4M3.1%-3.3%0.5 yr
MPLTMapLight Therapeutics, I$4M2.8%0.3 yr

Portfolio composition (YoY)

Industry mix
Biotechnology93.6%+1.6pp$131M
Medical - Diagnostics & Research3.1%$4M
Drug Manufacturers - General1.5%-4.4pp$2M
Unknown1.1%-0.5pp$2M
Medical - Pharmaceuticals0.6%$1M
Country
US89.3%+12.6pp
DK3.8%
CN3.7%-9.1pp
KY2.1%
Unknown1.1%-0.5pp
Top 5: 35.8% · Top 10: 57.9% · Top 25: 93.9%

Winners

TickerPrev $PnLYoY %
COGT$5M+0.03B542.6%
ORIC$5M+0.01B127.1%
URGN$5M+0.00B62.6%
TVTX$4M+0.00B65.8%
SVRA$3M+0.00B97.1%

Losers

TickerPrev $PnLYoY %
ZLAB$11M-0.01B-48.0%
SMMT$3M-0.00B-1.7%

Top buys this quarter · 15

SMMT Summit Therapeutics Inc.+$13M
DFTX Definium Therapeutics, Inc.new+$7M
PCVX Vaxcyte, Inc.+$6M
VIR Vir Biotechnology, Inc.+$5M
VRTX Vertex Pharmaceuticals Incorponew+$5M
GMAB Genmab A/S+$4M
MPLT MapLight Therapeutics, Inc.new+$4M
ARVN Arvinas, Inc.new+$3M
SVRA Savara Inc.+$3M
ORKA Oruka Therapeutics, Inc.new+$3M

Top sells this quarter · 15

URGN UroGen Pharma Ltd.$6M
COGT Cogent Biosciences, Inc.$5M
RVMD Revolution Medicines, Inc.exit$5M
FOLD Amicus Therapeutics, Inc.exit$5M
AXSM Axsome Therapeutics, Inc.$4M
BLTE Belite Bio, Incexit$4M
OCUL Ocular Therapeutix, Inc.exit$4M
PFE Pfizer Inc.$3M
TSHA Taysha Gene Therapies, Inc.$3M
CABA Cabaletta Bio, Inc.$3M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$140M35+77.35%+17.59%+59.76%-0.05B
2025-12-31$187M45+59.07%+17.72%+41.35%+0.06B
2025-09-30$99M34+12.06%+17.52%-5.46%-0.00B
2025-06-30$79M34-10.10%+14.94%-25.04%-0.01B
2025-03-31$84M33-31.89%+8.30%-40.19%-0.02B
2024-12-31$111M37-21.44%+24.89%-46.33%+0.01B
2024-09-30$112M27+2.89%+5.75%-2.86%+0.03B
2024-06-30$79M39-20.77%+4.38%-25.15%-0.04B
2024-03-31$151M37+5.20%+10.39%-5.20%+0.00B
2023-12-31$140M30