Amprius Ownership | Who Owns Amprius?
Amprius Ownership Summary
Amprius is owned by 31.20% institutional investors, 8.89% insiders, and 59.91% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 6.12% of AMPX shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.09% of its assets in Amprius shares.
AMPX Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Amprius | 31.20% | 8.89% | 59.91% |
| Sector | Industrials Stocks | 64.11% | 12.72% | 23.17% |
| Industry | Electrical Equipment Stocks | 41.64% | 18.77% | 39.59% |
| Idea | Electric Vehicle Stocks List | 25.21% | 17.93% | 56.86% |
| Idea | EV Battery Stocks List | 20.46% | 15.46% | 64.08% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 7.46M | 6.12% | $78.43M |
| Vanguard group | 6.51M | 5.35% | $68.51M |
| Geode capital management | 2.42M | 1.99% | $25.52M |
| Invesco | 2.38M | 1.95% | $25.03M |
| Deutsche bank ag\ | 2.07M | 1.70% | $21.74M |
| Bnp paribas arbitrage, snc | 1.94M | 1.60% | $20.45M |
| Ubs group | 1.55M | 1.27% | $16.29M |
| Stephens investment management group | 1.08M | 0.89% | $11.39M |
| Charles schwab investment management | 974.49K | 0.80% | $10.25M |
| Baird financial group | 876.93K | 0.72% | $9.23M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Essex investment management | 697.39K | 1.12% | $7.34M |
| Cornerstone partners capital management | 30.71K | 0.94% | $323.03K |
| Slt | 120.30K | 0.82% | $1.27M |
| Thames capital management | 526.83K | 0.79% | $5.54M |
| Lisanti capital growth | 265.73K | 0.68% | $2.80M |
| Legato capital management | 251.27K | 0.29% | $2.64M |
| Huntleigh advisors | 156.07K | 0.28% | $1.64M |
| Lexington partners | 76.76K | 0.26% | $214.94K |
| Stephens investment management group | 1.08M | 0.15% | $11.39M |
| Bryce point capital | 11.15K | 0.14% | $117.26K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Blackrock funding, inc. /de | 7.46M | 0.00% | 2.19M |
| Deutsche bank ag\ | 2.07M | 0.01% | 2.01M |
| Bnp paribas arbitrage, snc | 1.94M | 0.01% | 1.78M |
| Vanguard group | 6.51M | 0.00% | 1.76M |
| Invesco | 2.38M | 0.00% | 1.26M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Renaissance | 12.40K | 0.00% | -1.33M |
| Board of trustees of the leland stanford junior university | - | - | -1.15M |
| Marshall wace, llp | 30.37K | 0.00% | -1.08M |
| Zazove associates | - | - | -969.93K |
| Jpmorgan chase | 287.72K | 0.00% | -729.50K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Stephens investment management group | 1.08M | 0.15% | 1.08M | $11.39M |
| Thames capital management | 526.83K | 0.79% | 526.83K | $5.54M |
| Artemis investment management llp | 478.52K | 0.06% | 478.52K | $5.03M |
| Arrowstreet capital, limited partnership | 471.79K | 0.00% | 471.79K | $4.96M |
| Polen capital management | 339.43K | 0.01% | 339.43K | $3.57M |
Sold Out
| Holder | Change |
|---|---|
| Nelson, van denburg & campbell wealth management group | -2.00 |
| Twin peaks wealth advisors | -7.00 |
| Kestra investment management | -10.00 |
| Srs capital advisors | -60.00 |
| Ifp advisors | -66.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Jun 30, 2025 | 125 | 16.82% | 37,991,404 | 82.87% | 31 | 10.06% | 82 | 26.15% | 22 | 37.50% |
| Mar 31, 2025 | 106 | 6.00% | 20,840,400 | 25.25% | 17 | 7.78% | 64 | -3.03% | 16 | 60.00% |
| Dec 31, 2024 | 97 | 29.33% | 16,490,472 | 99.57% | 14 | 26.67% | 63 | 65.79% | 10 | -33.33% |
| Sep 30, 2024 | 74 | 1.37% | 8,233,883 | 7.69% | 7 | 10.34% | 37 | -19.57% | 15 | 114.29% |
| Jun 30, 2024 | 73 | 37.74% | 7,645,780 | 55.04% | 8 | 25.95% | 46 | 109.09% | 7 | -56.25% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 2.61M | 2.09% | -58.09K |
| iShares Russell 2000 ETF | 2.24M | 1.79% | - |
| Invesco WilderHill Clean Energy ETF | 1.13M | 0.90% | - |
| Fidelity Small Cap Index | 935.27K | 0.75% | 767.82K |
| iShares Russell 2000 Growth ETF | 826.11K | 0.66% | - |
| Vanguard US Total Market Shares ETF | 593.90K | 0.50% | - |
| Vanguard US Momentum Factor ETF | 539.86K | 0.45% | 80.60K |
| Vanguard Institutional Extnd Mkt Idx Tr | 507.26K | 0.41% | -239.51K |
| State St Russell Sm/Mid Cp® Indx SL Cl I | 459.24K | 0.37% | 399.79K |
| Global X Atnms & Elctrc Vhcls ETF | 451.26K | 0.36% | - |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Aug 21, 2025 | Stefan Constantin Ionel | Chief Technology Officer | Sell | $130.59K |
| Aug 21, 2025 | Wallach Sandra | Chief Financial Officer | Sell | $193.51K |
| Aug 21, 2025 | Sun Kang | Chief Executive Officer | Sell | $447.51K |
| May 21, 2025 | Stefan Constantin Ionel | Chief Technology Officer | Sell | $49.53K |
| May 21, 2025 | Wallach Sandra | Chief Financial Officer | Sell | $67.11K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q4 | - | - |
| 2025 Q3 | - | 3 |
| 2025 Q2 | - | 3 |
| 2025 Q1 | - | 4 |
| 2024 Q4 | - | 6 |
AMPX Ownership FAQ
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