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Livermore
Livermore
ZHEN

Renaissance Technologies LLC

SEC CIK
0001037389
Latest filing
Aug 13, 2026

ROCK holding history

Gibraltar Industries, 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.

ROCK overviewAll 13F holders of ROCKFull Q2 2026 holdings

Shares (Q2 2026)
66,668
Value
$3.01M
% of portfolio
<0.1%
Quarters held
22
Since Q1 2021
Holdings of ROCK by Renaissance Technologies LLC, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 202666,668$3.01M<0.1%+51,168+330.1%AddedHolders
Q1 202615,500$618.0K<0.1%−23,600−60.4%ReducedHolders
Q4 202539,100$1.93M<0.1%−65,500−62.6%ReducedHolders
Q3 2025104,600$6.57M<0.1%−105,365−50.2%ReducedHolders
Q2 2025209,965$12.4M<0.1%−40,400−16.1%ReducedHolders
Q1 2025250,365$14.7M<0.1%−10,100−3.9%ReducedHolders
Q4 2024260,465$15.3M<0.1%+90,000+52.8%AddedHolders
Q3 2024170,465$11.9M<0.1%+19,502+12.9%AddedHolders
Q2 2024150,963$10.3M<0.1%−17,637−10.5%ReducedHolders
Q1 2024168,600$13.6M<0.1%−21,065−11.1%ReducedHolders
Q4 2023189,665$15.0M<0.1%+13,765+7.8%AddedHolders
Q3 2023175,900$11.9M<0.1%−33,465−16.0%ReducedHolders
Q2 2023209,365$13.2M<0.1%−37,100−15.1%ReducedHolders
Q1 2023246,465$12.0M<0.1%−30,500−11.0%ReducedHolders
Q4 2022276,965$12.7M<0.1%−1,700−0.6%ReducedHolders
Q3 2022278,665$11.4M<0.1%−64,900−18.9%ReducedHolders
Q2 2022343,565$13.3M<0.1%+74,000+27.5%AddedHolders
Q1 2022269,565$11.6M<0.1%+66,700+32.9%AddedHolders
Q4 2021202,865$13.5M<0.1%−86,139−29.8%ReducedHolders
Q3 2021289,004$20.1M<0.1%−49,300−14.6%ReducedHolders
Q2 2021338,304$25.8M<0.1%−96,500−22.2%ReducedHolders
Q1 2021434,804$39.8M<0.1%––Holders

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