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Livermore
Livermore
ZHEN

Bruce & Co., Inc.

SEC CIK
0001358331
Latest filing
Aug 14, 2026

SUPN holding history

Supernus Pharmaceuticals, Inc. in every 13F filed by Bruce & Co., Inc., including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

SUPN overviewAll 13F holders of SUPNFull Q2 2026 holdings

Shares (Q2 2026)
150,000
Value
$6.98M
% of portfolio
1.9%
Quarters held
22
Since Q1 2021
Holdings of SUPN by Bruce & Co., Inc., by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 2026150,000$6.98M1.9%+50,000+50.0%AddedHolders
Q1 2026100,000$5.17M1.5%+17,895+21.8%AddedHolders
Q4 202582,105$4.08M1.3%00.0%UnchangedHolders
Q3 202582,105$3.92M1.2%00.0%UnchangedHolders
Q2 202582,105$2.59M0.8%00.0%UnchangedHolders
Q1 202582,105$2.69M0.9%00.0%UnchangedHolders
Q4 202482,105$2.97M1.0%00.0%UnchangedHolders
Q3 202482,105$2.56M0.7%00.0%UnchangedHolders
Q2 202482,105$2.20M0.7%00.0%UnchangedHolders
Q1 202482,105$2.80M0.9%00.0%UnchangedHolders
Q4 202382,105$2.38M0.8%00.0%UnchangedHolders
Q3 202382,105$2.26M0.8%00.0%UnchangedHolders
Q2 202382,105$2.47M0.7%00.0%UnchangedHolders
Q1 202382,105$2.97M0.8%−10,000−10.9%ReducedHolders
Q4 202292,105$3.29M0.8%−30,000−24.6%ReducedHolders
Q3 2022122,105$4.13M1.1%−80,000−39.6%ReducedHolders
Q2 2022202,105$5.84M1.4%−20,000−9.0%ReducedHolders
Q1 2022222,105$7.18M1.5%−180,000−44.8%ReducedHolders
Q4 2021402,105$11.7M2.3%00.0%UnchangedHolders
Q3 2021402,105$10.7M2.3%00.0%UnchangedHolders
Q2 2021402,105$12.4M2.4%00.0%UnchangedHolders
Q1 2021402,105$10.5M2.0%––Holders

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