Amprius Technologies, Inc.
AMPX- Exchange
- NYSE
- Industry
- Miscellaneous Electrical Machinery, Equipment & Supplies
- SEC CIK
- 0001899287
In the last 90 days, Amprius Technologies, Inc. insiders filed 0 open-market purchases and 3 sales; 261 institutions reported holding it in 13F filings for Q2 2026, worth $1.35B in total; no superinvestor holds it.
Other share classesAMPX.WT
Q3 2025 vs. Q2 2025
How the institutions holding Amprius Technologies, Inc. changed between Q2 2025 and Q3 2025.
All holders in Q3 2025All holders in Q2 2025
| Measure | Q2 2025 | Of which not filed for Q3 2025 | Q3 2025 | Change |
|---|---|---|---|---|
| Holders | 121 | 2 | 187 | +68 |
| Shares | 38.1M | 21.5K | 63.6M | +25.6M (+67.2%) |
| Value | $160.4M | $90.4K | $669.4M | +$509.1M (+317.7%) |
2 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.
New holders (86)
Institutions that held Amprius Technologies, Inc. at the end of Q3 2025 but not at the end of Q2 2025.
Sold out (18)
Institutions that held Amprius Technologies, Inc. at the end of Q2 2025 and filed for Q3 2025 without it.
| Institution | Shares, Q2 2025 | Value, Q2 2025 |
|---|---|---|
| Board of Trustees of The Leland Stanford Junior University | 1,146,636 | $4.83M |
| Polar Asset Management Partners Inc. | 274,788 | $1.16M |
| Bridgeway Capital Management, LLC | 135,000 | $568.4K |
| Apis Capital Advisors, LLC | 60,000 | $252.6K |
| Robertson Stephens Wealth Management, LLC | 31,094 | $130.9K |
| SG Americas Securities, LLC | 15,373 | $65.0K |
| Spears Abacus Advisors LLC | 15,055 | $63.4K |
| Edmond de Rothschild Holding S.A. | 14,970 | $63.0K |
| Simplex Trading, LLC | 13,916 | $58.0K |
| Bank of Montreal | 11,017 | $46.4K |
| Brinker Capital Investments, LLC | 10,270 | $43.2K |
| Thurston, Springer, Miller, Herd & Titak, Inc. | 10,000 | $42.1K |
| Clear Street Markets LLC | 5,882 | $24.8K |
| STRS Ohio | 1,000 | $4.21K |
| Ameriflex Group, Inc. | 900 | $3.84K |
| Point72 (DIFC) Ltd | 738 | $3.11K |
| WealthTrak Capital Management LLC | 130 | $548 |
| Twin Peaks Wealth Advisors, LLC | 7 | $54 |
Not filed for Q3 2025 yet (2)
Institutions that held Amprius Technologies, Inc. at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q2 2025 | Value, Q2 2025 |
|---|---|---|
| CIBC World Markets Corp | 11,484 | $48.3K |
| Clear Street LLC | 10,000 | $42.1K |