Also trades as: AMPX-WT (NYSE) · $vol 1M
AMPX NYSE
Amprius Technologies, Inc.
1W: -14.4%
1M: -32.6%
3M: +60.7%
YTD: +75.1%
1Y: +500.0%
3Y: +78.1%
$16.03
+0.73 (+4.77%)
Weekly Expected Move ±18.2%
$11
$14
$17
$20
$23
Overview
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Institutions
ETF Exposure
Dark Pool
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Supply Chain
🏦 Institutional Activity
Latest: Q1 2026278
Institutions Holding
+42 vs prior
72.8%
Ownership
+35.00%
69
New
85
Increased
104
Reduced
55
Closed
👔 Insider Trades
25 records| Date | Name | Title | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-05-05 | Sun Kang | director | A-Grant/Award | 6,250 | $— | $0 | Filing |
| 2026-03-23 | Sun Kang | director | S-Sale | 65,046 | $19.06 | $1.2M | Filing |
| 2026-03-23 | Sun Kang | director | S-Sale | 152,823 | $18.69 | $2.9M | Filing |
| 2026-03-12 | HSIEH Wen Hsuan | director | S-Sale | 130,646 | $18.22 | $2.4M | Filing |
| 2026-03-12 | HSIEH Wen Hsuan | director | S-Sale | 282,500 | $18.55 | $5.2M | Filing |
| 2026-03-12 | Chu Steven | director | S-Sale | 5,565 | $18.53 | $103K | Filing |
| 2026-03-12 | Chu Steven | director | S-Sale | 50,000 | $18.21 | $911K | Filing |
| 2026-03-12 | Chu Steven | director | S-Sale | 100,000 | $18.65 | $1.9M | Filing |
| 2026-03-10 | Chu Steven | director | S-Sale | 166,632 | $17.92 | $3.0M | Filing |
| 2026-03-04 | Stefan Constantin Ionel | officer: chief technology officer | A-Grant/Award | 110,000 | $— | $0 | Filing |
| 2026-03-04 | RODRIGUEZ RICARDO C. | officer: chief financial officer | A-Grant/Award | 150,000 | $— | $0 | Filing |
| 2026-03-04 | Stepien Thomas M | officer: chief executive officer | A-Grant/Award | 150,000 | $— | $0 | Filing |
| 2026-03-04 | RODRIGUEZ RICARDO C. | officer: chief financial officer | A-Grant/Award | 150,000 | $— | $0 | Filing |
| 2026-02-23 | Stefan Constantin Ionel | officer: chief technology officer | S-Sale | 25,366 | $10.16 | $258K | Filing |
| 2026-02-23 | Sun Kang | director | S-Sale | 61,251 | $10.16 | $622K | Filing |
| 2026-01-28 | Stefan Constantin Ionel | officer: chief technology officer | S-Sale | 39,690 | $12.00 | $476K | Filing |
| 2026-01-23 | Stefan Constantin Ionel | officer: chief technology officer | S-Sale | 1,600 | $12.00 | $19K | Filing |
| 2026-01-22 | Stefan Constantin Ionel | officer: chief technology officer | S-Sale | 492,827 | $12.04 | $5.9M | Filing |
| 2026-01-21 | Stefan Constantin Ionel | officer: chief technology officer | S-Sale | 73,280 | $12.00 | $879K | Filing |
| 2026-01-20 | Sun Kang | director | S-Sale | 43,185 | $11.03 | $476K | Filing |
| 2026-01-16 | Sun Kang | director | S-Sale | 950,548 | $11.07 | $10.5M | Filing |
| 2026-01-12 | Sun Kang | director | S-Sale | 506,267 | $10.10 | $5.1M | Filing |
| 2025-12-19 | Stepien Thomas M | officer: president | A-Grant/Award | 200,000 | $— | $0 | Filing |
| 2025-12-19 | Stepien Thomas M | officer: chief executive officer | A-Grant/Award | 200,000 | $— | $0 | Filing |
| 2025-12-11 | Stefan Constantin Ionel | officer: chief technology officer | S-Sale | 198,255 | $10.51 | $2.1M | Filing |
🏛️ Congressional Trades
0 records| Date | Politician | Chamber | Type | Amount | Filing |
|---|---|---|---|---|---|
| No congressional trades found | |||||
🏦 Top Institutional Holders
20 holders| Holder | Shares | Value | Date Reported | Filing | |
|---|---|---|---|---|---|
| CORNERSTONE PARTNERS CAPITAL MANAGEMENT, | 30,706 | $518M | — | 2026-03-31 | Filing |
| BlackRock, Inc. | 9,225,611 | $156M | +401,832 | 2026-03-31 | Filing |
| VANGUARD CAPITAL MANAGEMENT LLC | 4,908,875 | $83M | +4,908,875 | 2026-03-31 | Filing |
| JANE STREET GROUP, LLC | 4,160,656 | $70M | +3,947,231 | 2026-03-31 | Filing |
| Driehaus Capital Management LLC | 3,794,178 | $64M | +1,400,966 | 2026-03-31 | Filing |
| GEODE CAPITAL MANAGEMENT, LLC | 2,814,530 | $47M | +136,113 | 2026-03-31 | Filing |
| STATE STREET CORP | 2,712,630 | $46M | +158,920 | 2026-03-31 | Filing |
| UBS Group AG | 2,311,554 | $39M | +212,608 | 2026-03-31 | Filing |
| GOLDMAN SACHS GROUP INC | 2,226,181 | $38M | +31,340 | 2026-03-31 | Filing |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA | 2,024,760 | $34M | +2,024,760 | 2026-03-31 | Filing |
| Baird Financial Group, Inc. | 1,585,098 | $27M | +811,670 | 2026-03-31 | Filing |
| Qube Research & Technologies Ltd | 1,227,570 | $21M | +353,490 | 2026-03-31 | Filing |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 1,170,131 | $20M | +185,225 | 2026-03-31 | Filing |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1,073,396 | $18M | +1,073,396 | 2026-03-31 | Filing |
| JPMORGAN CHASE & CO | 1,216,185 | $18M | +1,132,736 | 2026-03-31 | Filing |
| BARCLAYS PLC | 1,054,927 | $18M | +585,021 | 2026-03-31 | Filing |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1,039,394 | $18M | +2,503 | 2026-03-31 | Filing |
| NORTHERN TRUST CORP | 1,022,625 | $17M | +59,454 | 2026-03-31 | Filing |
| HRT FINANCIAL LP | 1,002,658 | $17M | +1,002,658 | 2026-03-31 | Filing |
| Hood River Capital Management LLC | 949,147 | $16M | +139,403 | 2026-03-31 | Filing |