Amprius Ownership | Who Owns Amprius?
Amprius Ownership Summary
Amprius is owned by 36.83% institutional investors, 8.55% insiders, and 54.61% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 6.97% of AMPX shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.39% of its assets in Amprius shares.
AMPX Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Amprius | 36.83% | 8.55% | 54.61% |
| Sector | Industrials Stocks | 47.66% | 12.56% | 39.78% |
| Industry | Electrical Equipment Stocks | 30.79% | 17.25% | 51.96% |
| Idea | Electric Vehicle Stocks List | 24.97% | 18.23% | 56.80% |
| Idea | EV Battery Stocks List | 27.58% | 15.88% | 56.54% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 8.82M | 6.97% | $69.62M |
| Vanguard group | 7.13M | 5.63% | $56.25M |
| Driehaus capital management | 3.09M | 2.54% | $32.51M |
| Morgan stanley | 2.81M | 2.22% | $22.17M |
| Geode capital management | 2.68M | 2.12% | $21.14M |
| Invesco | 2.38M | 1.95% | $25.03M |
| State street | 2.19M | 1.80% | $23.04M |
| Goldman sachs group | 2.19M | 1.73% | $17.32M |
| Ubs group | 2.10M | 1.66% | $16.56M |
| Deutsche bank ag\ | 1.96M | 1.54% | $15.43M |
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 | 0.67% | $242.27K |
| Slt | 123.30K | 0.63% | $972.84K |
| Thames capital management | 526.83K | 0.60% | $4.16M |
| Hussman strategic advisors | 210.00K | 0.40% | $1.66M |
| Alphacentric advisors | 50.00K | 0.39% | $394.50K |
| Lisanti capital growth | 198.89K | 0.37% | $1.57M |
| Lexington partners | 76.76K | 0.26% | $214.94K |
| Driehaus capital management | 3.09M | 0.23% | $32.51M |
| Bayforest capital | 11.48K | 0.22% | $193.50K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Driehaus capital management | 3.09M | 0.23% | 3.09M |
| Voloridge investment management | 1.88M | 0.07% | 1.88M |
| Blackrock funding, inc. /de | 8.82M | 0.00% | 1.37M |
| Norges bank | 1.30M | 0.00% | 1.30M |
| Invesco | 2.38M | 0.00% | 1.26M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Bnp paribas arbitrage, snc | 707.08K | 0.00% | -1.24M |
| Board of trustees of the leland stanford junior university | - | - | -1.15M |
| Zazove associates | - | - | -969.93K |
| Arrowstreet capital, limited partnership | - | - | -471.79K |
| Artemis investment management llp | - | - | -464.03K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Driehaus capital management | 3.09M | 0.23% | 3.09M | $32.51M |
| Voloridge investment management | 1.88M | 0.07% | 1.88M | $19.74M |
| Norges bank | 1.30M | 0.00% | 1.30M | $10.30M |
| William blair investment management | 984.91K | 0.02% | 984.91K | $7.77M |
| Tudor investment corp et al | 715.74K | 0.01% | 715.74K | $7.53M |
Sold Out
| Holder | Change |
|---|---|
| Nelson, van denburg & campbell wealth management group | -2.00 |
| Twin peaks wealth advisors | -7.00 |
| Ifp advisors | -9.00 |
| Kestra investment management | -10.00 |
| Swan capital | -29.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | 133 | -31.79% | 46,641,212 | -26.69% | 36 | 1.35% | 82 | -46.05% | 30 | 15.38% |
| Sep 30, 2025 | 190 | 48.44% | 63,537,131 | 66.89% | 52 | 5.34% | 148 | 78.31% | 25 | 13.64% |
| Jun 30, 2025 | 125 | 16.82% | 37,991,404 | 82.87% | 31 | 10.06% | 82 | 26.15% | 22 | 37.50% |
| Mar 31, 2025 | 106 | 6.00% | 20,840,400 | 25.25% | 17 | 7.78% | 64 | -3.03% | 16 | 60.00% |
| Dec 31, 2024 | 97 | 29.33% | 16,490,472 | 99.57% | 14 | 26.67% | 63 | 65.79% | 10 | -33.33% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 3.28M | 2.39% | - |
| iShares Russell 2000 ETF | 2.79M | 2.04% | -22.80K |
| MFS New Discovery I | 1.62M | 1.18% | 650.91K |
| Stephens Small Cap Growth | 1.44M | 1.10% | 358.40K |
| Vanguard Institutional Extnd Mkt Idx Tr | 1.42M | 1.04% | 8.75K |
| Fidelity Small Cap Index | 1.07M | 0.78% | -13.05K |
| Xtrackers MSCI USA Swap ETF 1C | 994.45K | 0.76% | -4.67K |
| Invesco WilderHill Clean Energy ETF | 986.77K | 0.72% | - |
| iShares Russell 2000 Growth ETF | 940.98K | 0.69% | - |
| Heptagon Driehaus US Micro Cap Eq C$ Acc | 921.17K | 0.67% | -193.39K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Apr 01, 2026 | Sun Kang | - | Sell | $19.68M |
| Apr 01, 2026 | Sun Kang | - | Sell | $4.18M |
| Mar 23, 2026 | Sun Kang | - | Sell | $2.86M |
| Mar 23, 2026 | Sun Kang | - | Sell | $1.24M |
| Mar 12, 2026 | HSIEH Wen Hsuan | - | Sell | $2.38M |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | 2 |
| 2026 Q1 | - | 17 |
| 2025 Q4 | - | 4 |
| 2025 Q3 | - | 3 |
| 2025 Q2 | - | 3 |
AMPX Ownership FAQ
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