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RHUMBLINE ADVISERS

Position in AMPH — Amphastar Pharmaceuticals, Inc.

CIK 1115418 BOSTON, MA

Position in AMPH

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$1,623,561
-$16,533 QoQ
Shares Held
80,454
-3.9% QoQ
Ownership
0.189%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#48
of 209 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 47% Shared 0% None 53%

Common Shares in AMPH Over Time

Shares Held

Position Value (USD)

Position in Drug Manufacturers - Specialty & Generic

Healthcare · as of Jun 30, 2026

RHUMBLINE ADVISERS holds $455,921,156 across 48 Drug Manufacturers - Specialty & Generic names. AMPH ranks #27 (0.4% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in AMPH

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,623,561 80,454
2026-03-31 $1,640,094 83,721
2025-12-31 $2,206,404 82,390
2025-09-30 $2,401,937 90,129
2025-06-30 $2,187,789 95,287
2025-03-31 $2,578,892 88,958
2024-12-31 $3,242,451 87,327
2024-09-30 $4,179,112 86,114
2024-06-30 $3,623,480 90,587
2024-03-31 $3,916,464 89,193
2023-12-31 $5,797,819 93,740
2023-09-30 $4,300,616 93,512
2023-06-30 $5,227,068 90,953
2023-03-31 $3,411,262 90,967
2022-12-31 $2,363,711 84,358
2022-09-30 $2,376,866 84,586
2022-06-30 $2,754,915 79,187
2022-03-31 $2,871,820 79,995
2021-12-31 $1,816,061 77,976
2021-09-30 $1,490,878 78,426
2021-06-30 $1,841,132 91,326
2021-03-31 $1,543,569 84,256
2020-12-31 $1,660,703 82,581
2020-09-30 $1,548,412 82,582
2020-06-30 $1,968,214 87,632
2020-03-31 $1,385,447 93,359