XENE · NASDAQ · Biotechnology

Xenon Pharmaceuticals (XENE)

Develops azetukalner and ion-channel medicines for epilepsy, depression, and pain.

$39.18
After hours+0.10 (+0.27%)
At close$39.08(+0.22%)

13F · 13D/G · Form 4

Institutions≈ 101.44%98.24M shares
325 holders · as of Jun 30, 2026 · largest filers plus last quarter's tail
Insiders0.10%94.8K shares
10 holders · as of Sep 3, 2026
Adds to101.54%

96.84M company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing

This quarter's institutional total failed a plausibility check; shown: the largest filers plus last quarter's remainder.

These groups come from separate filings that can overlap, so they add to 101.54%; nothing is left for Other.

13F · 13D/G · Form 4

HolderStakeSharesDate
FMR LLCInstitution
9.96%9.65Mas of Jun 30, 2026
BlackRock, Inc.Institution
7.77%7.52Mas of Jun 30, 2026
Avoro Capital Advisors LLCInstitution
5.97%5.78Mas of Jun 30, 2026
Polar Capital Holdings PLCInstitution
4.72%4.57Mas of Jun 30, 2026
Driehaus Capital Management LLCInstitution
4.56%4.42Mas of Jun 30, 2026
Jupiter Topco LLCInstitution
4.32%4.19Mas of Jun 30, 2026
Price T Rowe Associates Inc /MD/Institution
3.35%3.25Mas of Jun 30, 2026
JPMorgan Chase & CoInstitution
2.70%2.62Mas of Jun 30, 2026
Capital International InvestorsInstitution
2.44%2.36Mas of Jun 30, 2026
T. Rowe Price Investment Management, Inc.Institution
2.24%2.17Mas of Jun 30, 2026
State Street CorpInstitution
2.03%1.97Mas of Jun 30, 2026
Two Sigma Investments, LPInstitution
1.70%1.64Mas of Jun 30, 2026
Deerfield Management Company, L.P. (Series C)Institution
1.67%1.62Mas of Jun 30, 2026
Affinity Asset Advisors, LLCInstitution
1.65%1.60Mas of Jun 30, 2026
AllianceBernstein L.P.Institution
1.61%1.56Mas of Jun 30, 2026
Westfield Capital Management Co LPInstitution
1.56%1.51Mas of Jun 30, 2026
Franklin Resources IncInstitution
1.48%1.44Mas of Jun 30, 2026
Wellington Management Group LLPInstitution
1.47%1.43Mas of Jun 30, 2026
Citadel Advisors LLCInstitution
1.45%1.40Mas of Jun 30, 2026
Geode Capital Management, LLCInstitution
1.41%1.37Mas of Jun 30, 2026
Siren, L.L.C.Institution
1.36%1.32Mas of Jun 30, 2026
BNP Paribas Asset Management Holding S.A.Institution
1.33%1.29Mas of Jun 30, 2026
Pictet Asset Management Holding SAInstitution
1.23%1.19Mas of Jun 30, 2026
Braidwell LPInstitution
1.17%1.13Mas of Jun 30, 2026
Nuveen, LLCInstitution
1.03%993,126as of Jun 30, 2026

13F, as of Jun 30, 2026

325 holders · 98.24M shares · 51 new positions · 181 increased · 86 reduced · 25 closed

HolderShares% outstandingChg q/qFiled
FMR LLC9.65M9.96%−1.17MAug 13, 2026
BlackRock, Inc.7.52M7.77%+1.88MAug 7, 2026
Avoro Capital Advisors LLC5.78M5.97%0Aug 14, 2026
Polar Capital Holdings PLC4.57M4.72%+165.2KAug 14, 2026
Driehaus Capital Management LLC4.42M4.56%−73.1KAug 14, 2026
Jupiter Topco LLC4.19M4.32%+4.19MnewAug 14, 2026
Price T Rowe Associates Inc /MD/3.25M3.35%+1.92MAug 14, 2026
JPMorgan Chase & Co2.62M2.70%+693.8KAug 12, 2026

13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
FMR LLC11.50%8.82M13GAug 6, 2025
Avoro Capital Advisors LLC6.26%5.78M13GMay 15, 2026
Wellington Management Group LLP6.20%4.76M13GFeb 10, 2026
BlackRock, Inc.6.20%4.76M13GJul 17, 2025

Form 4

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Aug 28, 2026
Christopher John Kenneyofficer: Chief Medical Officer
Sale · 2 lots7,068$60.252
Aug 11, 2026
Steven Gannondirector
Sale10,000$64.061,870
Jun 5, 2026
Gillian Cannondirector
Sale1,190$53.141,455
Jun 5, 2026
Gary Patoudirector
Sale1,322$53.1424,896
Mar 13, 2026
Ian Mortimerdirector, officer: PRESIDENT & CEO
Sale7,308$55.2319,923
Mar 13, 2026
Andrea DiFabioofficer: Chief Legal Officer
Sale1,342$55.237,301
Mar 13, 2026
Christopher John Kenneyofficer: Chief Medical Officer
Sale1,410$55.237,069
Mar 9, 2026
Ian Mortimerdirector, officer: PRESIDENT & CEO
Sale · 9 lots270,000$60.336,000
Mar 10, 2026
Ian Mortimerdirector, officer: PRESIDENT & CEO
Sale11,269$60.1114,731
Mar 10, 2026
Andrea DiFabioofficer: Chief Legal Officer
Sale2,607$60.114,893

House and Senate disclosures

Not reported.