Amprius Technologies
AMPX
100 hedge funds and large institutions have $55.8M invested in Amprius Technologies in 2025 Q1 according to their latest regulatory filings, with 30 funds opening new positions, 35 increasing their positions, 15 reducing their positions, and 21 closing their positions.
374% more call options, than puts
Call options by funds: $4.77M | Put options by funds: $1.01M
133% more repeat investments, than reductions
Existing positions increased: 35 | Existing positions reduced: 15
50% more funds holding in top 10
Funds holding in top 10: 2 → 3 (+1)
43% more first-time investments, than exits
New positions opened: 30 | Existing positions closed: 21
20% more capital invested
Capital invested by funds: $46.6M → $55.8M (+$9.28M)
10% more funds holding
Funds holding: 91 → 100 (+9)
2.62% more ownership
Funds ownership: 15.05% → 17.67% (+2.6%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
EIM
Essex Investment Management
Boston,
Massachusetts
|
+$2.76M |
| 2 |
UBS Group
Zurich,
Switzerland
|
+$2.76M |
| 3 |
Marshall Wace
London,
United Kingdom
|
+$2.65M |
| 4 |
Vanguard Group
Malvern,
Pennsylvania
|
+$2.01M |
| 5 |
Millennium Management
New York
|
+$2M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Invesco
Atlanta,
Georgia
|
-$3.89M |
| 2 |
Renaissance Technologies
New York
|
-$2.21M |
| 3 |
XT
XTX Topco
George Town,
Cayman Islands
|
-$784K |
| 4 |
Jane Street
New York
|
-$450K |
| 5 |
BWM
Bosman Wealth Management
Redlands,
California
|
-$287K |
AMPX Hedge Fund Activity: Q1 2025 in Review
100 of the 7,472 institutional investors tracked by Wall St. Rank reported a position in Amprius Technologies (AMPX) for Q1 2025, worth a combined $55.8M — up 20% from $46.6M a quarter earlier.
Buyers outnumbered sellers: 30 funds opened new AMPX positions and 21 closed out — a net gain of 9 holders — while 35 added to existing stakes and 15 trimmed.
The largest buyer was Essex Investment Management, opening a new position worth an estimated $2.76M. The largest seller was Invesco, cutting an estimated $3.89M.
- 100 institutional investors held Amprius Technologies (AMPX) as of Q1 2025, up from 91 in Q4 2024.
- Funds reported $55.8M of Amprius Technologies stock for Q1 2025, up 20% quarter-over-quarter.
- 30 funds opened new Amprius Technologies positions in Q1 2025 and 21 closed out, a net change of +9 holders.
- The largest Amprius Technologies buyer in Q1 2025 was Essex Investment Management, an estimated $2.76M added.
- The largest Amprius Technologies seller in Q1 2025 was Invesco, an estimated $3.89M sold.
Based on aggregated 13F filings for Q1 2025.