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Home/Hedge Funds/RTW Investments/Q1 2023

RTW Investments

Period: Q1 2023 Β· Filed: 2023-05-15
View on SEC EDGAR β†—
AUM
$4.80B
Total portfolio value
Positions
60
Reported securities
Top Holding
RXDX
7.3% $351.2M
QoQ Changes
+8 / -8
new Β· exited
⚠️13F Filing Disclosure

AUM figures shown are calculated by summing the reported market value of all positions in SEC 13F-HR filings β€” not the fund's actual assets under management.

  • Excludes cash, bonds, private equity, short positions, and foreign-listed stocks not required to be reported.
  • For PUT and CALL options, the reported Value is the notional value of the underlying shares β€” not the option premium paid. This significantly overstates the actual capital at risk.
  • Actual fund AUM is typically higher and includes strategies, instruments, and positions that never appear in a 13F.
  • 13F filings cover institutional managers with β‰₯$100M in 13F securities. Positions reflect end-of-quarter holdings, disclosed up to 45 days after the period ends.

Data sourced from SEC EDGAR. This tracker is for informational purposes only and does not constitute investment advice.

Portfolio Holdings

Top 30 positions

⚠️ Performance % calculated from filing date ( 2023-05-15) shown is the underlying stock price movement β€” not the derivative's P&L.
TickerIssuerNotionalPort %@ FilingNow (EOD)Since FilingAllocation
RXDXPROMETHEUS BIOSCIENCES INC$351.2M7.31%β€”β€”
7.3%
PTCTPTC THERAPEUTICS INC$343.6M7.16%$48.44$83.31+72.0%
7.2%
ALNYALNYLAM PHARMACEUTICALS INC$337.2M7.02%$200.32$312.78+56.1%
7.0%
RCKTROCKET PHARMACEUTICALS INC$303.0M6.31%$17.13$3.84-77.6%
6.3%
IMCRIMMUNOCORE HLDGS PLC$279.3M5.82%$49.44$32.50-34.3%
5.8%
MASIMASIMO CORP$277.1M5.77%$184.54β€”
5.8%
AXSMAXSOME THERAPEUTICS INC$233.2M4.86%$61.68$244.31+296.1%
4.9%
PENPENUMBRA INC$187.7M3.91%$278.69$318.57+14.3%
3.9%
ARGXARGENX SE$179.7M3.74%$372.58$939.68+152.2%
3.7%
RAREULTRAGENYX PHARMACEUTICAL IN$171.3M3.57%$40.10$33.47-16.5%
3.6%
TMOTHERMO FISHER SCIENTIFIC INC$167.3M3.48%$570.48$523.44-8.3%
3.5%
ESTAESTABLISHMENT LABS HLDGS INC$161.8M3.37%$67.74$89.25+31.8%
3.4%
ACADACADIA PHARMACEUTICALS INC C$155.1M3.23%$18.82$25.97+38.0%
3.2%
NTRANATERA INC$145.0M3.02%$55.52$279.32+403.1%
3.0%
MRTXMIRATI THERAPEUTICS INC$135.4M2.82%β€”β€”
2.8%
CLDXCELLDEX THERAPEUTICS INC NEW$111.0M2.31%$35.98$38.37+6.6%
2.3%
PTGXPROTAGONIST THERAPEUTICS INC$105.8M2.20%$23.00$131.62+472.3%
2.2%
OBIOORCHESTRA BIOMED HLDGS INC$100.2M2.09%$19.57$4.19-78.6%
2.1%
RNAMAVIDITY BIOSCIENCES INC$98.0M2.04%β€”β€”
2.0%
VCELVERICEL CORP$96.5M2.01%$29.32$46.98+60.2%
2.0%
BRKRBRUKER CORP$93.6M1.95%$77.86$61.64-20.8%
1.9%
CYTKCYTOKINETICS INC$90.6M1.89%$35.19$86.49+145.8%
1.9%
ILMNILLUMINA INC$87.5M1.82%$226.22$188.68-16.6%
1.8%
AVDLXXXXAVADEL PHARMACEUTICALS PLC$52.6M1.10%β€”β€”
1.1%
TXG10X GENOMICS INC$51.8M1.08%$55.79$39.01-30.1%
1.1%
AXNXAXONICS INC$48.3M1.01%β€”β€”
1.0%
VTYXVENTYX BIOSCIENCES INC$46.5M0.97%β€”β€”
1.0%
CUTRQCUTERA INC$43.6M0.91%β€”β€”
0.9%
STOKSTOKE THERAPEUTICS INC$36.6M0.76%$8.33$32.70+292.6%
0.8%
TARSTARSUS PHARMACEUTICALS INC$32.0M0.67%$12.57$65.44+420.6%
0.7%

Quarter-on-Quarter Activity

Q1 2023 vs. Q4 2022

New Positions (8)

TickerIssuerNotionalSince Filing
OBIOORCHESTRA BIOMED HLDGS INC$100.2M-78.6%
BRKRBRUKER CORP$93.6M-20.8%
SCPHSCPHARMACEUTICALS INC$29.9M
VKTXVIKING THERAPEUTICS INC$16.6M
MLYSMINERALYS THERAPEUTICS INC$14.4M
JSPRXXXXJASPER THERAPEUTICS INC$4.2M
LSBYS BIOPHARMA CO LTD$0.6M
RCKTWROCKET PHARMACEUTICALS INC$0.0M

Exited Positions (8)

TickerIssuerNotional
GMEDGLOBUS MED INC$55.5M
RGNXREGENXBIO INC$41.9M
BCYCBICYCLE THERAPEUTICS PLC$37.3M
OYSTOYSTER PT PHARMA INC$25.8M
ISEEIVERIC BIO INC$17.6M
CINCCINCOR PHARMA INC$17.1M
CCCCC4 THERAPEUTICS INC$16.6M
TERNTERNS PHARMACEUTICALS INC$10.2M

Increased (8)

TickerIssuerNotionalShares Ξ”Since Filing
ACADACADIA PHARMACEUTICALS INC C$96.7M+124.5%+38.0%
ROIVROIVANT SCIENCES LTD$5.0M+93.4%
MIROMIROMATRIX MED INC$-0.1M+59.0%
PTGXPROTAGONIST THERAPEUTICS INC$66.6M+28.1%+472.3%
AXSMAXSOME THERAPEUTICS INC$3.3M+26.9%+296.1%
PTCTPTC THERAPEUTICS INC$129.3M+26.3%+72.0%
RNAMAVIDITY BIOSCIENCES INC$-26.3M+13.9%
STOKSTOKE THERAPEUTICS INC$0.8M+13.4%+292.6%

Trimmed (8)

TickerIssuerNotionalShares Ξ”Since Filing
SGHTSIGHT SCIENCES INC$-7.8M-93.8%
ARYDARYA SCIENCES ACQU CORP IV$-3.7M-74.4%
CSTLCASTLE BIOSCIENCES INC$-6.3M-50.0%
TMOTHERMO FISHER SCIENTIFIC INC$-72.5M-33.3%-8.3%
ILMNILLUMINA INC$-26.6M-33.3%-16.6%
OLKOLINK HLDG AB$-10.2M-33.3%
AKYAAKOYA BIOSCIENCES INC$-1.9M-32.1%
PMVPPMV PHARMACEUTICALS INC$-23.6M-31.2%
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