13F Insight
DOSSIER · 13F Holders · Q1 2026Technology · Miscellaneous Electrical Machinery, Equipment & SuppliesMega-capCrowded
AMPX

AMPRIUS TECHNOLOGIES INC

255 institutions still hold AMPRIUS TECHNOLOGIES INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 03214Q108·Miscellaneous Electrical Machinery, Equipment & Supplies·255 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 9.6%
vs prior quarter
13F value held
$1.0B
74.0% inst. owned
of float
Holders
255
+35 QoQ
filers reporting
Activity
+36 / −93
+773 added · −654 reduced
this quarter
Concentration
15.30%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

255 institutions reported AMPX in Q1 2026. BlackRock, Inc. leads at 15.3% of the visible book. +35 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$156M9.2M0.00%Q1 202602
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$111M6.6M0.01%Q1 202603
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$111M6.6M0.01%Q1 202604
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$83M4.9M0.00%Q1 202605
DRIEHAUS CAPITAL MANAGEMENT LLC
CIK 0000938206
$64M3.8M0.47%Q1 202606
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$59M3.5M0.05%Q1 202607
MORGAN STANLEY
CIK 0000895421
$53M3.2M0.00%Q1 202608
UBS Group AG
CIK 0001610520
$49M2.9M0.01%Q1 202609
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$47M2.8M0.00%Q1 202610
STATE STREET CORP
CIK 0000093751
$46M2.7M0.00%Q1 202611
GOLDMAN SACHS GROUP INC
CIK 0000886982
$38M2.2M0.00%Q1 202612
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
CIK 0000912938
$34M2.0M0.01%Q1 202613
Baird Financial Group, Inc.
CIK 0001648711
$27M1.6M0.04%Q1 202614
Point72 Asset Management, L.P.
CIK 0001603466
$25M1.5M0.03%Q1 202615
Qube Research & Technologies Ltd
CIK 0001729829
$21M1.2M0.02%Q1 202616
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
CIK 0001644956
$20M1.2M0.07%Q1 202617
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$20M1.2M0.01%Q1 202618
PEAK6 LLC
CIK 0001389958
$18M1.1M0.04%Q1 202619
Vanguard Portfolio Management
CIK 0002100121
$18M1.1M0.00%Q1 202620
JPMORGAN CHASE & CO
CIK 0000019617
$18M1.2M0.00%Q1 2026
Page 1 of 13
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