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Livermore
Livermore
ZHEN

Fred Alger Management, LLC

SEC CIK
0000003520
Latest filing
Aug 14, 2026

RGEN holding history

Repligen Corp in every 13F filed by Fred Alger Management, LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

RGEN overviewAll 13F holders of RGENFull Q2 2026 holdings

Shares (Q2 2026)
733,739
Value
$100.1M
% of portfolio
0.3%
Quarters held
22
Since Q1 2021
Holdings of RGEN by Fred Alger Management, LLC, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 2026733,739$100.1M0.3%+298,965+68.8%AddedHolders
Q1 2026434,774$51.2M0.2%−476,753−52.3%ReducedHolders
Q4 2025911,527$149.4M0.6%+553,105+154.3%AddedHolders
Q3 2025358,422$47.9M0.2%+58,866+19.7%AddedHolders
Q2 2025299,556$37.3M0.2%−137,481−31.5%ReducedHolders
Q1 2025437,037$55.6M0.3%+77,530+21.6%AddedHolders
Q4 2024359,507$51.7M0.2%−39,047−9.8%ReducedHolders
Q3 2024398,554$59.3M0.3%+90,831+29.5%AddedHolders
Q2 2024307,723$38.8M0.2%−118,569−27.8%ReducedHolders
Q1 2024426,292$78.4M0.4%−2,192−0.5%ReducedHolders
Q4 2023428,484$77.0M0.4%−56,238−11.6%ReducedHolders
Q3 2023484,722$77.1M0.4%−85,409−15.0%ReducedHolders
Q2 2023570,131$80.7M0.4%−21,357−3.6%ReducedHolders
Q1 2023591,488$99.6M0.5%+176,259+42.4%AddedHolders
Q4 2022415,229$70.3M0.4%−77,067−15.7%ReducedHolders
Q3 2022492,296$92.1M0.5%−155,171−24.0%ReducedHolders
Q2 2022647,467$105.1M0.5%−378,391−36.9%ReducedHolders
Q1 20221,025,858$193.0M0.6%−192,784−15.8%ReducedHolders
Q4 20211,218,642$322.7M0.8%−355,356−22.6%ReducedHolders
Q3 20211,573,998$454.9M1.1%+187,901+13.6%AddedHolders
Q2 20211,386,097$276.7M0.7%−91,081−6.2%ReducedHolders
Q1 20211,477,178$287.2M0.8%––Holders

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