Funds · 13F filer · New York, NY

Rtw Investments, LP

$11.7B in 84 U.S. stocks and ETFs at the end of June 30, 2026, as reported to the SEC.1

1y return+66.8%S&P 500 +20.9%
3y return+72.7%S&P 500 +68.5%
5y return+19.9%S&P 500 +74.5%
10y return+360.9%S&P 500 +256.5%

These returns are for its stock picks as disclosed on Form 13F: last quarter's holdings, valued at this quarter's prices. They miss trades within each quarter, short positions, options, bonds, cash and fees, so they aren't the returns its clients got.

$100 invested in its stock picks

Since June 30, 2016: $461 against $357 in the S&P 500.2

Rtw Investments, LPS&P 500 (SPY)
$100$100$46120162026

Top holdings

At the end of June 30, 2026. Change is in shares since the quarter before.2

StockValueShare of portfolioChange
MDGLMadrigal Pharmaceuticals Inc$1.1B9.1%
ARGXArgenx Se$658.2M5.6%
PTCTPtc Therapeutics Inc$631.9M5.4%
PTGXProtagonist Therapeutics Inc$620.4M5.3%
CGONCg Oncology Inc$605.0M5.2%+21.9%
INSMInsmed Inc$516.3M4.4%
TNGXTango Therapeutics Inc$434.5M3.7%+4.5%
SYRESpyre Therapeutics Inc$377.5M3.2%+1.9%
CELCCelcuity Inc$345.8M3.0%+8.7%
ERASErasca Inc$328.8M2.8%+11.1%
RDNTRadnet Inc$298.9M2.6%+13.1%
ORKAOruka Therapeutics Inc$298.7M2.6%+52.5%
NTRANatera Inc$271.4M2.3%−20.0%
RAREUltragenyx Pharmaceutical In$260.3M2.2%+113.7%
IRTCIrhythm Holdings Inc$259.6M2.2%+30.8%
CYTKCytokinetics Inc$243.8M2.1%+5.2%
KLRAKailera Therapeutics Inc$237.4M2.0%New
Establishment Labs Hldgs IncCUSIP G31249108$227.9M1.9%
GHGuardant Health Inc$222.2M1.9%
NBIXNeurocrine Biosciences Inc$213.7M1.8%+19.4%
TARSTarsus Pharmaceuticals Inc$211.3M1.8%
STOKStoke Therapeutics Inc$184.0M1.6%
Uniqure NvCUSIP N90064101$181.5M1.5%+52.4%
ACADAcadia Pharmaceuticals Inc$180.8M1.5%
RGENRepligen Corp$169.3M1.4%+2.9%

Best picks still held

How each current holding has done since the quarter it first appeared in its filings (up to six years back).

StockHeld sinceReturn sinceNow worth
PTGXProtagonist Therapeutics IncJune 30, 2020+594.1%$620.4M
NTRANatera IncJune 30, 2020+444.4%$271.4M
INSMInsmed IncJune 30, 2023+405.3%$516.3M
Establishment Labs Hldgs IncCUSIP G31249108June 30, 2020+359.4%$227.9M
SYRESpyre Therapeutics IncDecember 31, 2023+312.5%$377.5M
ARGXArgenx SeJune 30, 2020+311.9%$658.2M
CYTKCytokinetics IncSeptember 30, 2020+293.5%$243.8M
ORKAOruka Therapeutics IncSeptember 30, 2024+288.3%$298.7M
CMPSCompass Pathways PLCDecember 31, 2024+274.3%$151.4M
TNGXTango Therapeutics IncDecember 31, 2025+252.8%$434.5M

Sold off last quarter

  • Apogee Therapeutics IncCUSIP 03770N101 was $234.2M
  • Apellis Pharmaceuticals IncCUSIP 03753U106 was $148.2M
  • ISRGIntuitive Surgical Inc was $101.4M
  • Centessa Pharmaceuticals PLCCUSIP 152309100 was $81.6M
  • Crinetics Pharmaceuticals InCUSIP 22663K107 was $52.7M
  • WAYWaystar Hldg Corp was $39.3M
  • ARWRArrowhead Pharmaceuticals In was $36.7M
  • SYKStryker Corporation was $32.9M
  • CMPXCompass Therapeutics Inc was $22.1M
  • FLGTFulgent Genetics Inc was $20.5M

Quarter by quarter

QuarterIts picksS&P 500
June 30, 2026+17.5%+14.8%
March 31, 2026−4.2%−4.6%
December 31, 2025+21.1%+2.4%
September 30, 2025+22.3%+7.8%
June 30, 2025+4.1%+10.5%
March 31, 2025−2.1%−4.6%
December 31, 2024−2.8%+2.1%
September 30, 2024+4.6%+5.4%
June 30, 2024−8.5%+4.0%
March 31, 2024+6.4%+10.0%
December 31, 2023+21.5%+11.2%
September 30, 2023−15.5%−3.6%
June 30, 2023+2.8%+8.3%
March 31, 2023−3.9%+7.0%
December 31, 2022+8.5%+7.1%
September 30, 2022+13.8%−5.3%
June 30, 2022−24.0%−16.5%
March 31, 2022−16.9%−4.9%
December 31, 2021−4.0%+10.7%
September 30, 2021−6.0%+0.3%

Sources

Every number on this page points here. Each one links to the public record.

  1. 1
    CIK 1493215
  2. 2
    Filed August 14, 2026 · accession 0001493215-26-000164