Amprius Technologies
AMPX • NYSE
Amprius Technologies is a electrical equipment & parts company in the industrials sector on NYSE, led by Sandra Wallach, with a market cap of $1.5B. As of Q3 2025, 51% of shares are held by 186 institutional investors, with BlackRock, Inc. as the largest holder at 5.96%.
Chief Executive OfficerSandra Wallach
Market Cap$1.5B
Electrical Equipment & Parts
Industrials
Employees84.0
Websiteamprius.com
Country
United States of America
Overview
Overview of institutional ownership in AMPX as of Q3 2025 with a market cap of $1.3B
All Institutions
- Institutions
- 186
- Value Held
- $669.4M
- Shares Held
- 63.6M
- Avg Position
- $3.6M
- Median Position
- $513.7K
Hedge Funds
- Hedge Funds
- 36
- Value Held
- $155.6M
- Shares Held
- 14.8M
- Avg Position
- $4.3M
- Median Position
- $1.0M
Ownership Breakdown
Based on market cap of $1.3B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.
Biggest Investors
Institutions with the largest positions in AMPX as of Q3 2025
| Institution | Position Value |
|---|---|
B BlackRock, Inc. Institution | $78.4M 0.00% of portfolio |
 VANGUARD GROUP INC Institution | $68.5M 0.00% of portfolio |
 DRIEHAUS CAPITAL MANAGEMENT LLC Hedge Fund•Event Driven | $32.5M 0.23% of portfolio |
 MORGAN STANLEY RIA/Wealth | $28.9M 0.00% of portfolio |
 CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | $26.4M 0.02% of portfolio |
 GEODE CAPITAL MANAGEMENT LLC ETF Provider | $25.5M 0.00% of portfolio |
 Invesco Ltd. ETF Provider | $25.0M 0.00% of portfolio |
 STATE STREET CORP Institution | $23.0M 0.00% of portfolio |
 DEUTSCHE BANK AG\ Institution | $21.7M 0.01% of portfolio |
B BNP PARIBAS ARBITRAGE, SA Institution | $20.4M 0.02% of portfolio |
Net Capital Flow
Institutional buying and selling activity for AMPX in Q3 2025
- Traded
- +$280.1M
- Buyers
- 149
- Sellers
- 46
- Total Bought
- +$367.2M
- Total Sold
- −$87.1M
- Avg Position
- $3.3M
Biggest Buyers
| Institution | Net Bought |
|---|---|
DRIEHAUS CAPITAL MANAGEMENT LLC Hedge Fund•Event Driven | +$32.5M +3.1M shares |
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | +$23.4M +2.2M shares |
B BlackRock, Inc. Institution | +$23.0M +2.2M shares |
DEUTSCHE BANK AG\ Institution | +$21.1M +2.0M shares |
 VOLORIDGE INVESTMENT MANAGEMENT, LLC Hedge Fund•Multi-Strategy | +$19.7M +1.9M shares |
B BNP PARIBAS ARBITRAGE, SA Institution | +$18.8M +1.8M shares |
VANGUARD GROUP INC Institution | +$18.5M +1.8M shares |
Invesco Ltd. ETF Provider | +$13.3M +1.3M shares |
 GOLDMAN SACHS GROUP INC Institution | +$13.1M +1.2M shares |
 Stephens Investment Management Group LLC Long Only Manager | +$11.4M +1.1M shares |
Biggest Sellers
| Institution | Net Sold |
|---|---|
 MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy | −$31.9M −3.0M shares |
 RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant | −$14.0M −1.3M shares |
 Marshall Wace LLP Institution | −$11.3M −1.1M shares |
 JPMORGAN CHASE & CO Institution | −$7.7M −729.5K shares |
−$4.8M −1.1M shares | |
 ESSEX INVESTMENT MANAGEMENT CO LLC Long Only Manager | −$3.5M −328.0K shares |
 PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager | −$2.9M −273.9K shares |
 OPPENHEIMER & CO INC RIA/Wealth | −$1.6M −149.9K shares |
 Baird Financial Group, Inc. Private Equity | −$1.3M −123.8K shares |
 Polar Securities Inc. Hedge Fund•Multi-Strategy | −$1.2M −274.8K shares |
Entry and Exit Activity
Institutions that initiated new positions or completely exited AMPX in Q3 2025
- New Positions
- 69
- New Value
- $138.9M
- Exited Positions
- 19
- Exited Value
- $7.4M
New Positions
| Institution | Position Value |
|---|---|
DRIEHAUS CAPITAL MANAGEMENT LLC Hedge Fund•Event Driven | $32.5M 3.1M shares |
VOLORIDGE INVESTMENT MANAGEMENT, LLC Hedge Fund•Multi-Strategy | $19.7M 1.9M shares |
Stephens Investment Management Group LLC Long Only Manager | $11.4M 1.1M shares |
 TUDOR INVESTMENT CORP ET AL Hedge Fund•Multi-Strategy | $7.5M 715.7K shares |
C Capitolis Liquid Global Markets LLC Private Equity | $7.2M 680.6K shares |
 THAMES CAPITAL MANAGEMENT LLC Hedge Fund•Long/Short | $5.5M 526.8K shares |
A Artemis Investment Management LLP Institution | $5.0M 478.5K shares |
 ARROWSTREET CAPITAL LIMITED PARTNERSHIP Hedge Fund•Quant | $5.0M 471.8K shares |
 ALGERT COLDIRON INVESTORS LLC Hedge Fund•Quant | $4.0M 383.0K shares |
 POLEN CAPITAL MANAGEMENT LLC Long Only Manager | $3.6M 339.4K shares |
Exited Positions
| Institution | Previous Position |
|---|---|
$4.8M 1.1M shares | |
Polar Securities Inc. Hedge Fund•Multi-Strategy | $1.2M 274.8K shares |
B BRIDGEWAY CAPITAL MANAGEMENT INC Long Only Manager | $568.4K 135.0K shares |
 APIS CAPITAL ADVISORS, LLC Hedge Fund•Long/Short | $252.6K 60.0K shares |
R Robertson Stephens Wealth Management, LLC Institution | $130.9K 31.1K shares |
S SG Americas Securities, LLC Institution | $64.7K 15.4K shares |
S Spears Abacus Advisors LLC Long Only Manager | $63.4K 15.1K shares |
E EDMOND DE ROTHSCHILD HOLDING S.A. Institution | $63.0K 15.0K shares |
S SIMPLEX TRADING, LLC Institution | $58.6K 13.9K shares |
 BANK OF MONTREAL /CAN/ Institution | $46.4K 11.0K shares |
Options Activity
Institutions with the largest Call and Put options positions in AMPX as of Q3 2025
- Call Positions
- 7
- Call Value
- $40.7M
- Put Positions
- 3
- Put Value
- $8.0M
Call Positions
| Institution | Position Value |
|---|---|
 SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | $17.1M 16.3K contracts |
 BARCLAYS PLC Institution | $7.9M 7.5K contracts |
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | $7.4M 7.1K contracts |
J JANE STREET GROUP, LLC Institution | $6.9M 6.6K contracts |
P PEAK6 LLC Institution | $789.0K 750.0 contracts |
S SYMMETRY PEAK MANAGEMENT LLC Institution | $514.4K 489.0 contracts |
Polar Securities Inc. Hedge Fund•Multi-Strategy | - - contracts |
Put Positions
| Institution | Position Value |
|---|---|
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | $4.3M 4.0K contracts |
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | $2.6M 2.5K contracts |
J JANE STREET GROUP, LLC Institution | $1.1M 1.1K contracts |
Most Committed Institutions
Institutions with AMPX as the highest % of their portfolio as of Q3 2025
| Institution | Portfolio Weight |
|---|---|
ESSEX INVESTMENT MANAGEMENT CO LLC Long Only Manager | 1.12% $7.3M |
C CORNERSTONE PARTNERS CAPITAL MANAGEMENT, LLC Fund of Funds | 0.94% $323.0K |
 SLT Holdings LLC RIA/Wealth | 0.83% $1.3M |
THAMES CAPITAL MANAGEMENT LLC Hedge Fund•Long/Short | 0.80% $5.5M |
 AH Lisanti Capital Growth, LLC Long Only Manager | 0.68% $2.8M |
 EAM Investors, LLC Long Only Manager | 0.58% $5.1M |
 Legato Capital Management LLC Fund of Funds | 0.29% $2.6M |
 Huntleigh Advisors, Inc. RIA/Wealth | 0.28% $1.6M |
DRIEHAUS CAPITAL MANAGEMENT LLC Hedge Fund•Event Driven | 0.23% $32.5M |
 NEXT CENTURY GROWTH INVESTORS LLC Long Only Manager | 0.18% $2.4M |
Hedge Fund Spotlight
Discover hedge funds investing in AMPX
A
AXQ CAPITAL, LP
Hedge Fund • Market Neutral
Portfolio ManagerTaro Hsu Kuriyama
- Portfolio Value
- $261.9M
- Positions
- 552
- Last Reported
- Q3 2025
Sector Allocation
Position in Amprius Technologies
- Market Value
- $182.8K
- Shares Held
- 17.4K
- Portfolio Weight
- 0.07%
- Owned Since
- 2024-Q4
| Top Holding | Sector | Market Value | Weight |
|---|---|---|---|
Industrial - Machinery Industrials | $2.0M | 0.75% | |
Computer Hardware Technology | $1.9M | 0.72% | |
Independent Power Producers Utilities | $1.9M | 0.71% |
