AMPH — Amphastar Pharmaceuticles Inc

Ownership history in LAM GROUP, INC.  ·  13 quarters on record

This page tracks every 13F SEC filing in which LAM GROUP, INC. reported a position in Amphastar Pharmaceuticles Inc (AMPH). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
7.36% (2023 Q4)
Avg. % of fund
4.2%
First filed
2022 Q4
Last filed
2025 Q4
Quarters held
13
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 UNCHANGED 130,800 — 0% 2.00% $3.5M $26.78
2025 Q3 UNCHANGED 130,800 — 0% 2.16% $3.5M $26.65
2025 Q2 UNCHANGED 130,800 — 0% 2.01% $3.0M $22.96
2025 Q1 UNCHANGED 130,800 — 0% 2.79% $3.8M $28.99
9 older quarters hidden  —  Sign in free or upgrade to Premium to see full history
% of Fund (quarterly)    AMPH price (monthly, adj. close)

Other funds also holding AMPH

As of 2025 Q4 — sorted by position size

Bridge City Capital, LLC 3Y 7Y 1.85% Quantedge Capital Pte Ltd 3Y 1.17% DENALI ADVISORS LLC 3Y 7Y 0.63% SummerHaven Investment Management, LLC 3Y 0.58% Significant Wealth Partners LLC 0.29% SYSTEMATIC FINANCIAL MANAGEMENT LP 3Y 7Y 0.27% Corient IA LLC 0.19% BRIDGEWAY CAPITAL MANAGEMENT, LLC 3Y 7Y 0.18% RICE HALL JAMES & ASSOCIATES, LLC 3Y 7Y 0.18% Epoch Investment Partners, Inc. 3Y 7Y 0.17%
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