Amprius TechnologiesAMPX.WSPreferred / convertible
13F holders, Q1 2025 (March 31)9holders −1
1new positions
2sold out
1famous investor
$0.48avg. 13F price*
At the end of Q1 2025, 9 institutions reported holding Amprius Technologies Inc. (AMPX.WS) in their 13F filings, down 1 from Q4 2024. 1 opened new positions and 2 sold out. The largest holders were LMR Partners LLP ($1.2M), D. E. Shaw & Co. ($128K) and Stifel Financial Corp. ($116K). One famous investor held it David E. Shaw ( of D. E. Shaw & Co.'s portfolio).
- Company
- Amprius Technologies Inc.
- CUSIP
- 03214Q116
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 1 | $10K |
| Exits | 2 | $49K |
All 13F filers, Q4 2024 → Q1 2025: 1,312,874 shares bought and 147,508 shares sold, net +1,165,366 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 9 holders
| LMR Partners LLP | — | Add +110.2% | 2,466,554 | $1.2M |
| D. E. Shaw & Co. | — | No change | 267,000 | $128K |
| Stifel Financial Corp. | — | No change | 241,720 | $116K |
| Wolverine Asset Management LLC | — | Reduce -3.0% | 163,593 | $79K |
| Clear Street LLC | — | No change | 119,800 | $58K |
| Strategies Wealth Advisors, LLC | — | New | 20,000 | $10K |
| Avantax Advisory Services, Inc. | — | No change | 10,000 | $5K |
| UBS Group AG | — | Reduce -79.9% | 859 | $412 |
| Farther Finance Advisors, LLC | — | No change | 46 | $21 |
"% of holder's portfolio" is AMPX.WS's weight in each manager's 13F, not the share of Amprius Technologies Inc. the manager owns.