Amprius Technologies
AMPX
121 hedge funds and large institutions have $160M invested in Amprius Technologies in 2025 Q2 according to their latest regulatory filings, with 40 funds opening new positions, 45 increasing their positions, 21 reducing their positions, and 17 closing their positions.
931% more call options, than puts
Call options by funds: $9.63M | Put options by funds: $934K
188% more capital invested
Capital invested by funds: $55.7M → $160M (+$105M)
135% more first-time investments, than exits
New positions opened: 40 | Existing positions closed: 17
114% more repeat investments, than reductions
Existing positions increased: 45 | Existing positions reduced: 21
22% more funds holding
Funds holding: 99 → 121 (+22)
13.95% more ownership
Funds ownership: 17.63% → 31.58% (+14%)
33% less funds holding in top 10
Funds holding in top 10: 3 → 2 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
+$11.8M |
| 2 |
Millennium Management
New York
|
+$6.25M |
| 3 |
Morgan Stanley
New York
|
+$4.92M |
| 4 |
Renaissance Technologies
New York
|
+$3.75M |
| 5 |
JP Morgan Chase
New York
|
+$2.84M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
UBS Group
Zurich,
Switzerland
|
-$1.06M |
| 2 |
BOTOTLSJU
Board of Trustees of The Leland Stanford Junior University
Redwood City,
California
|
-$874K |
| 3 |
Blackstone Inc
New York
|
-$691K |
| 4 |
ACA
Apis Capital Advisors
New York
|
-$298K |
| 5 |
FIA
FNY Investment Advisers
New York
|
-$298K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
126
Walleye Capital
New York
| – | -$148K | -55,071 | Closed |
|
127
State of Wisconsin Investment Board
Madison,
Wisconsin
| – | -$124K | -46,100 | Closed |
|
|
AC
128
AXQ Capital
Jersey City,
New Jersey
| – | -$107K | -39,994 | Closed |
|
|
ECM
129
ExodusPoint Capital Management
New York
| – | -$41K | -15,336 | Closed |
|
130
Belvedere Trading
Chicago,
Illinois
| – | -$32.2K | -12,017 | Closed |
|
|
CF
131
Corebridge Financial
Houston,
Texas
| – | -$21.6K | -8,041 | Closed |
|
|
PA
132
Parallel Advisors
San Francisco,
California
| – | -$14K | -5,242 | Closed |
|
|
BIG
133
Brooklyn Investment Group
Brooklyn,
New York
| – | -$5.32K | -1,986 | Closed |
|
|
KAS
134
Kestra Advisory Services
Austin,
Texas
| – | -$4.02K | -1,500 | Closed |
|
135
US Bancorp
Minneapolis,
Minnesota
| – | -$914 | -341 | Closed |
|
|
AF
136
Allworth Financial
Folsom,
California
| – | -$202 | -81 | Closed |
|
|
IA
137
IFP Advisors
Tampa,
Florida
| – | -$177 | -66 | Closed |
|
|
AAP
138
Arax Advisory Partners
Denver,
Colorado
| – | -$161 | -60 | Closed |
|
AMPX Hedge Fund Activity: Q2 2025 in Review
121 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in Amprius Technologies (AMPX) for Q2 2025, worth a combined $160M — up 188% from $55.7M a quarter earlier.
Buyers outnumbered sellers: 40 funds opened new AMPX positions and 17 closed out — a net gain of 23 holders — while 45 added to existing stakes and 21 trimmed.
The largest buyer was BlackRock, adding an estimated $11.8M. The largest seller was UBS Group, cutting an estimated $1.06M.
- 121 institutional investors held Amprius Technologies (AMPX) as of Q2 2025, up from 99 in Q1 2025.
- Funds reported $160M of Amprius Technologies stock for Q2 2025, up 188% quarter-over-quarter.
- 40 funds opened new Amprius Technologies positions in Q2 2025 and 17 closed out, a net change of +23 holders.
- The largest Amprius Technologies buyer in Q2 2025 was BlackRock, an estimated $11.8M added.
- The largest Amprius Technologies seller in Q2 2025 was UBS Group, an estimated $1.06M sold.
Based on aggregated 13F filings for Q2 2025.