Amprius Technologies (AMPX/WS): which funds own it
A 13F shows the portfolio at quarter-end and is filed up to 45 days later: these are not real-time positions and they may have changed.
Sections with a free account
No concentrated manager holds it.
Quarter flow (concentrated managers)
Concentrated managers holding it
None in the latest quarter.
Largest holders of AMPX/WS (all 13F filers)
- LMR Partners LLP1.9 MType not verified−2.6 M
- Caption Management1.4 MType not verified+348 K
- DRW Securities356 KType not verified+21 K
- Janney Montgomery Scott158 KWealth adviser+100
- Aristeia Capital, L.l.c142 KInvestment firm−1.1 M
- Zazove Associates102 KInvestment firm−37 K
- Boothbay Fund Management40 KType not verified−430 K
- HRT Financial26 KBank or trading desk+26 K
- UBS Group811Bank or trading desk+811
- Farther Finance Advisors2Type not verified0
- Shares
- 1.9 M
- Change
- −2.6 M
See more
- Type
- Type not verified
- Value
- $11.1M
- Shares
- 1.4 M
- Change
- +348 K
See more
- Type
- Type not verified
- Value
- $8.4M
- Shares
- 356 K
- Change
- +21 K
See more
- Type
- Type not verified
- Value
- $2.1M
- Shares
- 158 K
- Change
- +100
See more
- Type
- Wealth adviser
- Value
- $928K
- Shares
- 142 K
- Change
- −1.1 M
See more
- Type
- Investment firm
- Value
- $830K
- Zazove Associates
- Shares
- 102 K
- Change
- −37 K
See more
- Type
- Investment firm
- Value
- $595K
- Shares
- 40 K
- Change
- −430 K
See more
- Type
- Type not verified
- Value
- $554K
- Shares
- 26 K
- Change
- +26 K
See more
- Type
- Bank or trading desk
- Value
- $152K
- Shares
- 811
- Change
- +811
See more
- Type
- Bank or trading desk
- Value
- $4.8K
- Shares
- 2
- Change
- 0
See more
- Type
- Type not verified
- Value
- $12
The 10 13F filers with the most shares as of Jun 30, 2026, whatever their type (index firms usually come first). “Change”: shares added or cut versus the previous quarter, split-adjusted; “no data” = there is no comparable portfolio for the previous quarter (no filing, or a filing with its holdings under confidential treatment). “% of the company” only where shares outstanding are up to date. Entities of the same group file separately and some 13F filings include other managers: there may be double counting. With a free account: the top 25, the largest buyers and the largest sellers.
Insiders (Form 4)
Open-market purchases, excluding 10b5-1 plans. Officers and directors only; joint filers of the same purchase count as one. 10% owners with no role are shown separately. 0 = nobody bought; “no data” = we do not have its Form 4 filings.
Above 5% (13D/13G)
This list may be incomplete: we hold 13D and 13G filings made since December 2024. A holder above 5% that has not filed anything since then is not shown here.
No recent filings.
All material events (8-K)
Earnings, agreements, financing, management changes and announcements from the last year, with a filter by type and a link to each filing.