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Livermore
Livermore
ZHEN

Renaissance Technologies LLC

SEC CIK
0001037389
Latest filing
Aug 13, 2026

AMPH holding history

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

AMPH overviewAll 13F holders of AMPHFull Q2 2026 holdings

Shares (Q2 2026)
525,100
Value
$10.6M
% of portfolio
<0.1%
Quarters held
22
Since Q1 2021
Holdings of AMPH by Renaissance Technologies LLC, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 2026525,100$10.6M<0.1%−28,800−5.2%ReducedHolders
Q1 2026553,900$10.9M<0.1%+9,200+1.7%AddedHolders
Q4 2025544,700$14.6M<0.1%−42,200−7.2%ReducedHolders
Q3 2025586,900$15.6M<0.1%+10,400+1.8%AddedHolders
Q2 2025576,500$13.2M<0.1%+81,500+16.5%AddedHolders
Q1 2025495,000$14.4M<0.1%−30,500−5.8%ReducedHolders
Q4 2024525,500$19.5M<0.1%+36,100+7.4%AddedHolders
Q3 2024489,400$23.8M<0.1%−48,300−9.0%ReducedHolders
Q2 2024537,700$21.5M<0.1%−61,400−10.2%ReducedHolders
Q1 2024599,100$26.3M<0.1%−42,800−6.7%ReducedHolders
Q4 2023641,900$39.7M0.1%+38,800+6.4%AddedHolders
Q3 2023603,100$27.7M<0.1%+110,517+22.4%AddedHolders
Q2 2023492,583$28.3M<0.1%−4,217−0.8%ReducedHolders
Q1 2023496,800$18.6M<0.1%+49,400+11.0%AddedHolders
Q4 2022447,400$12.5M<0.1%+13,600+3.1%AddedHolders
Q3 2022433,800$12.2M<0.1%+26,900+6.6%AddedHolders
Q2 2022406,900$14.2M<0.1%+98,200+31.8%AddedHolders
Q1 2022308,700$11.1M<0.1%+18,900+6.5%AddedHolders
Q4 2021289,800$6.75M<0.1%+14,100+5.1%AddedHolders
Q3 2021275,700$5.24M<0.1%+28,600+11.6%AddedHolders
Q2 2021247,100$4.98M<0.1%+21,500+9.5%AddedHolders
Q1 2021225,600$4.13M<0.1%––Holders

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