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Livermore
Livermore
ZHEN

Citadel Advisors LLC

SEC CIK
0001423053
Latest filing
Sep 1, 2026

REGN holding history

Regeneron Pharmaceuticals, Inc. in every 13F filed by Citadel Advisors LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

REGN overviewAll 13F holders of REGNFull Q2 2026 holdings

Shares (Q2 2026)
57,604
Value
$35.9M
% of portfolio
<0.1%
Quarters held
22
Since Q1 2021
Holdings of REGN by Citadel Advisors LLC, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 202657,604$35.9M<0.1%+9,917+20.8%AddedHolders
Q1 202647,687$36.8M<0.1%−97,283−67.1%ReducedHolders
Q4 2025144,970$111.9M0.1%−85,257−37.0%ReducedHolders
Q3 2025230,227$129.4M0.1%−450,278−66.2%ReducedHolders
Q2 2025680,505$357.3M0.3%+605,603+808.5%AddedHolders
Q1 202574,902$47.5M<0.1%−117,444−61.1%ReducedHolders
Q4 2024192,346$137.0M0.1%+122,086+173.8%AddedHolders
Q3 202470,260$73.9M0.1%−39,296−35.9%ReducedHolders
Q2 2024109,556$115.1M0.1%+30,978+39.4%AddedHolders
Q1 202478,578$75.6M0.1%−206,013−72.4%ReducedHolders
Q4 2023284,591$250.0M0.3%+220,135+341.5%AddedHolders
Q3 202364,456$53.0M0.1%+24,730+62.3%AddedHolders
Q2 202339,726$28.5M<0.1%−251,520−86.4%ReducedHolders
Q1 2023291,246$239.3M0.3%+214,170+277.9%AddedHolders
Q4 202277,076$55.6M0.1%+58,926+324.7%AddedHolders
Q3 202218,150$12.5M<0.1%+8,956+97.4%AddedHolders
Q2 20229,194$5.43M<0.1%−8,803−48.9%ReducedHolders
Q1 202217,997$12.6M<0.1%−81,923−82.0%ReducedHolders
Q4 202199,920$63.1M0.1%−9,603−8.8%ReducedHolders
Q3 2021109,523$66.3M0.1%+51,755+89.6%AddedHolders
Q2 202157,768$32.3M<0.1%+38,085+193.5%AddedHolders
Q1 202119,683$9.31M<0.1%––Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.