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ADAGE CAPITAL PARTNERS GP, L.L.C.

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13F filer, CIK 1165408, Boston, MA

ADAGE CAPITAL PARTNERS GP, L.L.C. reported $71,317,440,046 across 1,002 holdings for the quarter ended 2026-06-30, in a 13F-HR filed 2026-08-14. Its ten largest share positions make up 29.48% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001172661-26-003503

Period
2026-06-30
Reported value
$71.3B
Holdings
1,002
Top 10 weight
29.48%
New
178
Sold out
132

Largest buys vs the previous quarter

SecurityShares changeApprox. value
DVNadded+7,607,191$314M
KLACadded+819,886$247M
MRVLnew+745,800$222M
SYREnew+1,722,300$153M
UALadded+983,533$134M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
RVMDreduced-4,878,385-$914M
CNTAexited-8,925,010-$355M
CTRAexited-8,219,512-$289M
RPRXreduced-4,980,633-$279M
LLYreduced-230,618-$277M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q2 2026

Share positions as resolved from 13F-HR 0001172661-26-003503, largest first. % of portfolio is the value over $71,317,440,046, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
KIDZWKIDZ AI INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 387,153 shares; 2025Q3: 176,533 shares; 2025Q4: 176,533 shares; 2026Q1: 176,533 shares; 2026Q2: 176,533 shares 176,533$2.22K<0.01%0Timeline

Principal amounts

Notes and convertibles filed as a face amount (PRN). A face amount is never added to a share count (H6).

SecurityTypeAmountValueChange
KOSMOS ENERGY LTDKOSMOS ENERGY LTD NOTE 3.125% 3/1principal41,392,000$30.1M0

Sold out in Q2 2026

Positions in the previous quarter's report that this quarter's report no longer lists.

The largest 100 of 132. All 132

SecurityShares beforeValue beforeType
CNTACENTESSA PHARMACEUTICALS PLC8,925,010$355Mshares
CTRACOTERRA ENERGY INC8,219,512$289Mshares
SOSOUTHERN CO1,186,900$115Mshares
TERNTERNS PHARMACEUTICALS INC2,124,817$112Mshares
VOYAVOYA FINANCIAL INC1,500,000$102Mshares
MDGLMADRIGAL PHARMACEUTICALS INC185,331$97Mshares
HONHONEYWELL INTL INC408,451$92.3Mshares
HOLXHOLOGIC INC858,013$64.9Mshares
GTLSCHART INDS INC296,469$61.3Mshares
HCAHCA HEALTHCARE INC116,200$55Mshares
DALDELTA AIR LINES INC781,911$52Mshares
FEFIRSTENERGY CORP886,700$44.9Mshares
SHELSHELL PLC480,000$44.6Mshares
THGHANOVER INS GROUP INC215,370$37.3Mshares
SUNBSUNBELT RENTALS HOLDINGS INC565,000$36.8Mshares
FITBFIFTH THIRD BANCORP776,297$36.1Mshares
ERASERASCA INC2,100,000$34Mshares
QRVOQORVO INC434,311$33.6Mshares
UNHUNITEDHEALTH GROUP INC120,000$32.5Mput
EDCONSOLIDATED EDISON INC278,344$31.5Mshares
DUKDUKE ENERGY CORP NEW230,113$30.1Mshares
PTGXPROTAGONIST THERAPEUTICS INC282,436$29.8Mshares
SSDSIMPSON MFG INC157,500$27Mshares
KMPRKEMPER CORP800,000$24.4Mshares
FOLDAMICUS THERAPEUTIC1,650,000$23.9Mshares
ACAAUAVERIN CAP ACQUISITION CORP2,250,000$22.5Mshares
ALGNALIGN TECHNOLOGY INC130,314$22.3Mshares
OCSOCULIS HOLDING AG833,209$22.2Mshares
CWANCLEARWATER ANALYTICS HLDGS I935,000$22.1Mshares
CCLCARNIVAL CORP827,300$21.4Mshares
SHAKSHAKE SHACK INC230,000$20.3Mshares
HIGHARTFORD INSURANCE GROUP INC149,832$20.3Mshares
VRDNVIRIDIAN THERAPEUTICS INC970,018$19Mshares
EQTEQT CORP294,100$18.7Mshares
ALHCALIGNMENT HEALTHCARE INC1,050,174$18.5Mshares
MTALUMETALS ACQUISITION CORP II1,800,000$18.2Mshares
UMBFUMB FINL CORP160,691$18.1Mshares
TMTSUSPARTACUS ACQUISITION CORP I1,800,000$18.1Mshares
KPETUKPET ULTRA PACELINE CORP1,800,000$18Mshares
CAQUUCAMBRIDGE ACQUISITION CORP1,800,000$17.9Mshares
SAIASAIA INC51,000$17.9Mshares
TRGSUTRG LATIN AMER ACQUIS CORP1,800,000$17.9Mshares
AACOUABONY ACQUISITION CORP I1,800,000$17.9Mshares
RJFRAYMOND JAMES FINL INC123,150$17.8Mshares
USARUSA RARE EARTH INC1,160,000$17.6Mshares
KNTKKINETIK HOLDINGS INC362,500$17.5Mshares
WSCWILLSCOT HLDGS CORP998,888$17.3Mshares
TKRTIMKEN CO168,169$16.9Mshares
SILASILA REALTY TRUST INC690,860$16.4Mshares
RHPRYMAN HOSPITALITY PPTYS INC176,312$16.3Mshares
DGDOLLAR GEN CORP132,200$15.7Mshares
BSXBOSTON SCIENTIFIC CORP250,000$15.7Mput
IPFXUINFLECTION PT ACQUISIT CORP1,500,000$15.2Mshares
QADRUQDRO ACQUISITION CORP1,500,000$14.9Mshares
DDDUPONT DE NEMOURS INC320,101$14.7Mshares
KMIKINDER MORGAN INC DEL433,854$14.5Mshares
FNFABRINET27,500$14.3Mshares
FHNFIRST HORIZON CORPORATION600,100$13.7Mshares
SUMAUSUMA ACQUISITION CORP1,350,000$13.5Mshares
PALOUPALOMA ACQUISITION CORP I1,350,000$13.5Mshares
NVGSNAVIGATOR HLDGS LTD695,000$13.4Mshares
ONBOLD NATL BANCORP IND605,000$13.4Mshares
SSRMSSR MINING IN450,000$13.2Mshares
LENLENNAR CORP142,517$12.4Mshares
EPRTESSENTIAL PPTYS RLTY TR INC400,000$12.1Mshares
ABUSARBUTUS BIOPHARMA CORP2,664,941$12Mshares
SLVMSYLVAMO CORP270,000$11.4Mshares
MWHSOLV ENERGY INC379,183$11.4Mshares
BWIVUBLUE WTR ACQUISITION CORP IV1,125,000$11.2Mshares
SYYSYSCO CORP154,024$11Mshares
SEMSELECT MED HLDGS CORP658,467$10.7Mshares
MDUMDU RES GROUP INC500,000$10.4Mshares
IMVTIMMUNOVANT INC413,000$10.3Mshares
BBARRICK MNG CORP250,000$10.2Mshares
WLIIUWILLOW LANE ACQUISITION CRP1,000,000$10.1Mshares
MMSIMERIT MED SYS INC140,000$9.65Mshares
GKOSGLAUKOS CORP81,878$8.81Mshares
FLOCFLOWCO HLDGS INC400,000$8.24Mshares
WVEWAVE LIFE SCIENCES LTD1,000,000$7.25Mshares
SUNCSUNOCOCORP LLC111,532$6.88Mshares
CTLPCANTALOUPE INC625,661$6.76Mshares
CAGCONAGRA BRANDS INC426,845$6.71Mshares
FPSFORGENT POWER SOLUTIONS INC227,427$6.66Mshares
CPTCAMDEN PPTY TR67,300$6.57Mshares
SIMOSILICON MOTION TECHNOLOGY CO54,687$6.14Mshares
KRPKIMBELL RTY PARTNERS LP365,000$5.28Mshares
CDECOEUR MNG INC275,000$5.16Mshares
PRIMPRIMORIS SVCS CORP35,192$5.03Mshares
STROSUTRO BIOPHARMA INC200,000$4.98Mshares
ASMBASSEMBLY BIOSCIENCES INC161,000$4.47Mshares
PENNPENN ENTERTAINMENT INC284,008$4.27Mshares
OLMAOLEMA PHARMACEUTICALS INC275,000$4.1Mshares
PNFPPINNACLE FINL PARTNERS INC47,383$4.08Mshares
ALXOALX ONCOLOGY HLDGS INC2,000,000$4.01Mshares
EPAMEPAM SYS INC29,300$3.97Mshares
UHSUNIVERSAL HLTH SVCS INC21,153$3.79Mshares
NJRNEW JERSEY RES CORP60,000$3.3Mshares
PGENPRECIGEN INC846,000$3.27Mshares
TRIPTRIPADVISOR INC300,000$3.2Mshares
HOSHORNBECK OFFSHORE SERVICES I300,000$2.97Mshares

How Q2 2026 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001172661-26-003503 base2026-08-14acceptance time not in the bulk data set