Driehaus Capital Management LLC
Position in AMPX — Amprius Technologies, Inc.
CIK 938206
Chicago, IL
Position in AMPX
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$18,645,428
-$45,324,413 QoQ
Shares Held
1,345,269
-64.5% QoQ
Ownership
0.921%
of shares outstanding
% of Portfolio
0.11%
of 13F equity value
Holder Rank
#17
of 259 holders
Holding Since
Sep 2025
4 quarters on record
Voting authority
Sole 78%
Shared 0%
None 22%
Common Shares in AMPX Over Time
Shares Held
Position Value (USD)
Position in Electrical Equipment & Parts
Industrials · as of Jun 30, 2026Driehaus Capital Management LLC holds $420,206,611 across 7 Electrical Equipment & Parts names. AMPX ranks #7 (4.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | BE |
Bloom Energy Corp
|
390,259 | $118,131,399 | |
| 2 | EOSE |
Eos Energy Enterprises, Inc.
|
13,556,010 | $79,709,338 | |
| 3 | FPS |
Forgent Power Solutions, Inc.
|
1,334,384 | $74,538,690 | |
| 4 | AEIS |
Advanced Energy Industries Inc
|
184,957 | $68,964,916 | |
| 5 | FCEL |
Fuelcell Energy Inc
|
1,014,687 | $36,538,878 | |
| 6 | POWL |
Powell Industries Inc
|
82,686 | $23,677,962 | |
| 7 | AMPX |
Amprius Technologies, Inc.
This page
|
1,345,269 | $18,645,428 |
All Filings in AMPX
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4 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $18,645,428 | 1,345,269 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $63,969,841 | 3,794,178 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $18,882,442 | 2,393,212 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $32,513,837 | 3,090,669 | Shares | Sole | 2025-11-14 | |
| No filing history on record for this holder in this stock. | ||||||