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BLAIR WILLIAM & CO/IL

Position in AMPX — Amprius Technologies, Inc.

CIK 902367 CHICAGO, IL

Position in AMPX

as of Jun 30, 2026 · filed Aug 11, 2026
Position Value
$2,698,708
+$563,862 QoQ
Shares Held
194,712
+53.8% QoQ
Ownership
0.133%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#70
of 259 holders
Holding Since
Sep 2025
4 quarters on record
Voting authority Sole 86% Shared 0% None 14%

Common Shares in AMPX Over Time

Shares Held

Position Value (USD)

Position in Electrical Equipment & Parts

Industrials · as of Jun 30, 2026

BLAIR WILLIAM & CO/IL holds $73,116,827 across 11 Electrical Equipment & Parts names. AMPX ranks #6 (3.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
6 AMPX
Amprius Technologies, Inc.
This page
194,712 $2,698,708

All Filings in AMPX

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4 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $2,698,708 194,712
2026-03-31 $2,134,846 126,622
2025-12-31 $316,799 40,152
2025-09-30 $260,769 24,788