undamentalytics Newsletter

Hedge fund

Rubric Capital Management LP

13F for the quarter to June 30, 2026, filed August 14, 2026 · SEC CIK 1687509

Reported value
$10.9bn
98% in companies we cover
Positions we cover
83
Largest TLN 12.7%
Copy, a year
+12.0%
S&P 500 +14.7%
Copy Sharpe ratio
0.48
S&P 500 0.73

How copying its 13F would have done

$10.0k$20.0k$40.0k 20172019202120232025 $38.0k$30.2k
CopyS&P 500 $10,000 copying Rubric Capital Management LP's filed holdings in companies we cover from February 10, 2017, buying on the first trading day after each 13F was filed and holding until the next, against the S&P 500 (total return). Marked weekly, log scale. Before costs and taxes; misses trading within each quarter and anything 13F does not show (shorts, cash, bonds, non-US holdings).

Biggest drop −56.0% (S&P 500 −31.8%); beta 1.10; alpha −2.0% a year (t = −0.40); last 12 months +13.8% against +12.1%.

Reported value by quarter

Rubric Capital Management LP: 13F reported value Total value of all positions in each quarter's 13F, as filed (values before 2023 were filed in thousands of dollars and are converted).
$0 $1T $2T $3T Reported value, 2016-12-31: $196.7M Reported value, 2017-03-31: $324M Reported value, 2017-06-30: $411.7M Reported value, 2017-09-30: $645.4M Reported value, 2017-12-31: $796.1M Reported value, 2018-03-31: $1.1B Reported value, 2018-06-30: $1B Reported value, 2018-09-30: $946.3M Reported value, 2018-12-31: $804.6M Reported value, 2019-03-31: $1.1B Reported value, 2019-06-30: $937.3M Reported value, 2019-09-30: $889.7M Reported value, 2019-12-31: $858.7M Reported value, 2020-03-31: $612.4M Reported value, 2020-06-30: $858.1M Reported value, 2020-09-30: $1.1B Reported value, 2020-12-31: $1.3B Reported value, 2021-03-31: $1.7B Reported value, 2021-06-30: $1.6B Reported value, 2021-09-30: $1.7B Reported value, 2021-12-31: $2.1B Reported value, 2022-03-31: $2.1B Reported value, 2022-06-30: $1.9B Reported value, 2022-09-30: $2B Reported value, 2022-12-31: $2.3T Reported value, 2023-03-31: $2.5B Reported value, 2023-06-30: $2.3B Reported value, 2023-09-30: $2.4B Reported value, 2023-12-31: $2.7B Reported value, 2024-03-31: $3.4B Reported value, 2024-06-30: $3.8B Reported value, 2024-09-30: $6.1B Reported value, 2024-12-31: $5.5B Reported value, 2025-03-31: $5.6B Reported value, 2025-06-30: $6.2B Reported value, 2025-09-30: $7.4B Reported value, 2025-12-31: $8.4B Reported value, 2026-03-31: $8.2B Reported value, 2026-06-30: $10.9B 2016-12-31 2018-12-31 2020-12-31 2022-12-31 2024-12-31 2026-06-30 $10.9B
View chart data
Period Reported value
2016-12-31 $196.7M
2017-03-31 $324M
2017-06-30 $411.7M
2017-09-30 $645.4M
2017-12-31 $796.1M
2018-03-31 $1.1B
2018-06-30 $1B
2018-09-30 $946.3M
2018-12-31 $804.6M
2019-03-31 $1.1B
2019-06-30 $937.3M
2019-09-30 $889.7M
2019-12-31 $858.7M
2020-03-31 $612.4M
2020-06-30 $858.1M
2020-09-30 $1.1B
2020-12-31 $1.3B
2021-03-31 $1.7B
2021-06-30 $1.6B
2021-09-30 $1.7B
2021-12-31 $2.1B
2022-03-31 $2.1B
2022-06-30 $1.9B
2022-09-30 $2B
2022-12-31 $2.3T
2023-03-31 $2.5B
2023-06-30 $2.3B
2023-09-30 $2.4B
2023-12-31 $2.7B
2024-03-31 $3.4B
2024-06-30 $3.8B
2024-09-30 $6.1B
2024-12-31 $5.5B
2025-03-31 $5.6B
2025-06-30 $6.2B
2025-09-30 $7.4B
2025-12-31 $8.4B
2026-03-31 $8.2B
2026-06-30 $10.9B

Holdings and moves

CompanyShare of portfolioValueSharesChange in shares
TLNTalen Energy Corp12.70%$1.4bn3.60M0.0%
FTAIFTAI Aviation Ltd.7.45%$811.6m3.00M+16.5% Added
VTRSViatris4.98%$542.6m34.17M+2.0% Added
TEVATeva Pharmaceutical Industries LTD4.84%$527.7m15.57M+2.1% Added
GLNGGolar LNG LTD4.20%$457.5m9.18M0.0%
VSTVistra Corp.2.61%$284.7m1.79M+19.7% Added
TACTransalta Corp2.57%$279.8m20.23M+13.8% Added
FLRFluor Corp2.41%$262.9m5.02MNew
KNSAKiniksa Pharmaceuticals International, plc2.35%$255.8m4.00M+6.7% Added
BGCBGC Group, Inc.2.33%$254.4m23.80M+2.1% Added
ZMZoom Communications, Inc.2.19%$238.7m2.77M+176.3% Added
GILGildan Activewear Inc.2.13%$232.2m4.50M+222.4% Added
ARQTArcutis Biotherapeutics, Inc.1.99%$216.9m8.27M0.0%
AMZNAmazon1.97%$214.5m900.0KNew
ROIVRoivant Sciences Ltd.1.95%$212.3m6.00M+20.0% Added
ZYMEZymeworks Inc.1.68%$183.0m7.00M0.0%
AMCRAmcor1.66%$180.4m4.16M+227.9% Added
CMPRCimpress plc1.63%$178.0m1.75M+7.4% Added
AMRXAmneal Pharmaceuticals, Inc.1.61%$176.0m10.17M−7.9% Reduced
NRIXNurix Therapeutics, Inc.1.61%$175.3m7.23M+192.2% Added
MCYMercury General Corp1.51%$164.3m1.54M−28.5% Reduced
PFSIPennymac Financial Services, Inc.1.36%$148.1m1.70M+3006.3% Added
IARTIntegra Lifesciences Holdings Corp1.28%$139.3m7.75M0.0%
DKDelek US Holdings, Inc.1.25%$136.5m2.69M0.0%
MGTXMeiragtx Holdings plc1.13%$122.9m9.10M+30.0% Added
GEOGEO Group Inc1.12%$122.1m4.13M+10.4% Added
SDGRSchrodinger, Inc.0.95%$104.0m6.40M+6.7% Added
ECVTEcovyst Inc.0.94%$102.2m8.21M−10.1% Reduced
LBTYKLiberty Global Ltd.0.94%$101.9m9.26M0.0%
COMPCompass, Inc.0.93%$101.3m8.22M+119.3% Added
NWLNewell Brands Inc.0.90%$98.2m16.00M+4.9% Added
EPCEdgewell Personal Care Co0.87%$95.2m3.54M−11.4% Reduced
CXWCorecivic, Inc.0.79%$86.5m2.85M+38.3% Added
ARDXArdelyx, Inc.0.76%$82.6m16.20M+770.7% Added
ENOVEnovis Corp0.74%$80.7m3.90M+59.0% Added
ADMAAdma Biologics, Inc.0.72%$78.2m9.34M+416.2% Added
MNKDMannkind Corp0.70%$76.7m18.00M+397.2% Added
DRVNDriven Brands Holdings Inc.0.68%$73.9m5.30M+76.7% Added
OPKOpko Health, Inc.0.66%$71.7m47.79M0.0%
AVOMission Produce, Inc.0.65%$70.5m5.98M+246.5% Added
ADEAAdeia Inc.0.64%$70.0m2.13M−50.4% Reduced
RNWRenew Energy Global plc0.63%$68.8m11.00M0.0%
SSYSStratasys LTD.0.63%$68.5m8.00M0.0%
SPRYARS Pharmaceuticals, Inc.0.63%$68.4m8.54M+6.8% Added
ANDEAndersons, Inc.0.63%$68.4m999.6K+16.8% Added
PRMBPrimo Brands Corp0.60%$65.3m2.67M−4.0% Reduced
SONSonoco Products Co0.59%$64.4m1.14MNew
STUBStubhub Holdings, Inc.0.59%$64.3m5.00MNew
GLXYGalaxy Digital Inc.0.59%$64.1m2.34MNew
VGVenture Global, Inc.0.55%$60.2m5.41M+260.7% Added
ESTAEstablishment Labs Holdings Inc.0.54%$59.1m688.3KNew
QDELQuidelortho Corp0.53%$57.9m3.31M0.0%
ALVOAlvotech0.53%$57.8m15.68MNew
THTarget Hospitality Corp.0.48%$52.7m2.59M+18.1% Added
DNOWDnow Inc.0.46%$50.6m3.90M+207.6% Added
PRTAProthena Corp Public LTD Co0.45%$49.0m5.00M0.0%
TRVITrevi Therapeutics, Inc.0.43%$46.7m2.50M−32.5% Reduced
COLLCollegium Pharmaceutical, Inc0.42%$46.3m1.28M0.0%
ABUSArbutus Biopharma Corp0.33%$36.2m7.53M+13.7% Added
VGNTVersigent PLC0.33%$35.9m855.2KNew
XPERXperi Inc.0.31%$34.1m4.14M0.0%
OFIXOrthofix Medical Inc.0.31%$34.0m3.72M0.0%
TRIPTripadvisor, Inc.0.31%$33.4m2.44MNew
MATVMativ Holdings, Inc.0.28%$30.1m3.98M0.0%
LILALiberty Latin America Ltd.0.27%$29.6m3.78M+0.7% Added
BHVNBiohaven Ltd.0.23%$25.6m1.72MNew
VISNVistance Networks, Inc.0.23%$25.6m2.00M0.0%
ANIPANI Pharmaceuticals Inc0.20%$21.4m258.1KNew
QUREUniqure N.V.0.17%$18.8m408.6KNew
HPPHudson Pacific Properties, Inc.0.14%$15.5m1.02MNew
SEGSeaport Entertainment Group Inc.0.14%$15.1m568.5K0.0%
GDSGDS Holdings Ltd0.13%$14.6m485.9KNew
HRTXHeron Therapeutics, Inc.0.12%$12.8m30.05M0.0%
PRLBProto Labs Inc0.08%$8.9m108.7K−77.7% Reduced
AEROGrupo Aeromexico, S.a.b. De C.v.0.08%$8.4m467.1K0.0%
OMEROmeros Corp0.06%$6.2m656.9KNew
EPRXEupraxia Pharmaceuticals Inc.0.05%$5.7m867.4K+25.5% Added
EDSAEdesa Biotech, Inc.0.05%$5.4m669.5K−2.6% Reduced
MREOMereo Biopharma Group plc0.04%$4.9m15.31M0.0%
ABEOAbeona Therapeutics Inc.0.04%$3.8m608.8KNew
CRICarters Inc0.03%$3.6m86.8K−91.5% Reduced
TXMDTherapeuticsmd, Inc.0.02%$2.6m1.19M0.0%
TTITetra Technologies Inc0.02%$1.7m150.0KNew
CompanyBought (value)Shares
FLRFluor Corp$262.9m5.02M
AMZNAmazon$214.5m900.0K
GILGildan Activewear Inc.$160.2m3.10M
ZMZoom Communications, Inc.$152.3m1.77M
PFSIPennymac Financial Services, Inc.$143.3m1.65M
AMCRAmcor$125.4m2.89M
NRIXNurix Therapeutics, Inc.$115.3m4.75M
FTAIFTAI Aviation Ltd.$114.7m423.8K
ARDXArdelyx, Inc.$73.1m14.34M
SONSonoco Products Co$64.4m1.14M
STUBStubhub Holdings, Inc.$64.3m5.00M
GLXYGalaxy Digital Inc.$64.1m2.34M
ADMAAdma Biologics, Inc.$63.0m7.53M
MNKDMannkind Corp$61.3m14.38M
ESTAEstablishment Labs Holdings Inc.$59.1m688.3K

Change in shares on the previous quarter's 13F, valued at this quarter's reported price.

CompanySold (value)Shares
CEGConstellation Energy−$199.7m−715.0K
AKAMAkamai Technologies−$149.3m−1.30M
TDSTelephone & Data Systems Inc−$77.9m−1.85M
ADEAAdeia Inc.−$71.0m−2.16M
MCYMercury General Corp−$65.4m−613.1K
PTGXProtagonist Therapeutics, Inc−$45.1m−428.0K
CRICarters Inc−$38.4m−932.0K
PRLBProto Labs Inc−$30.8m−377.7K
TSATTelesat Corp−$30.5m−843.8K
BMRNBiomarin Pharmaceutical Inc−$24.9m−440.6K
TRVITrevi Therapeutics, Inc.−$22.5m−1.21M
INDVIndivior Pharmaceuticals, Inc.−$20.2m−662.5K
ACHCAcadia Healthcare Company, Inc.−$19.9m−850.0K
AMRXAmneal Pharmaceuticals, Inc.−$15.0m−868.9K
EPCEdgewell Personal Care Co−$12.2m−455.5K

Change in shares on the previous quarter's 13F, valued at this quarter's reported price.

CompanyValue last quarterShares
CEGConstellation Energy$199.7m715.0K
AKAMAkamai Technologies$149.3m1.30M
TDSTelephone & Data Systems Inc$77.9m1.85M
PTGXProtagonist Therapeutics, Inc$45.1m428.0K
TSATTelesat Corp$30.5m843.8K
BMRNBiomarin Pharmaceutical Inc$24.9m440.6K
INDVIndivior Pharmaceuticals, Inc.$20.2m662.5K
ACHCAcadia Healthcare Company, Inc.$19.9m850.0K
CPRICapri Holdings Ltd$11.9m675.0K
EMBCEmbecta Corp.$9.2m1.04M
HELEHelen Of Troy LTD$5.3m366.2K
MYPSPlaystudios, Inc.$1.3m2.70M
  • Health Care33.9%
  • Utilities19.0%
  • Industrials18.7%
  • Consumer Discretionary6.7%
  • Financials5.9%
  • Technology4.2%
  • Materials3.5%
  • Consumer Staples2.8%
  • Communication Services2.2%
  • Energy1.9%
  • Real Estate1.2%

Share of the value held in companies we cover, by sector.

PeriodCopy, a yearS&P 500SharpeS&P 500Biggest dropBeta
Whole backtestFebruary 10, 2017 to November 2, 2026+12.0%+14.7%0.480.73−56.0%1.10
2018 onwardsJanuary 5, 2018 to November 2, 2026+10.3%+13.9%0.400.66−56.0%1.10
Last three yearsNovember 3, 2023 to November 2, 2026+27.8%+21.8%1.061.16−26.5%0.99
Last yearNovember 7, 2025 to November 2, 2026+16.4%+14.2%0.690.84−11.3%0.81

From SEC Form 13F data sets. A 13F lists long positions in US-listed shares at the quarter's end, filed up to 45 days later; it does not show shorts, cash, bonds, non-US holdings or trades within the quarter. Positions in companies outside our coverage are not listed here. Research, not investment advice.