Amprius Ownership | Who Owns Amprius?
Amprius Ownership Summary
Amprius is owned by 38.50% institutional investors, 4.59% insiders, and 56.91% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 7.40% of AMPX shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.44% of its assets in Amprius shares.
AMPX Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Amprius | 38.50% | 4.59% | 56.91% |
| Sector | Industrials Stocks | 49.67% | 15.62% | 34.71% |
| Industry | Electrical Equipment Stocks | 33.05% | 15.96% | 50.99% |
| Idea | Electric Vehicle Stocks List | 19.42% | 16.66% | 63.91% |
| Idea | EV Battery Stocks List | 18.01% | 15.77% | 66.22% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 9.23M | 7.40% | $155.54M |
| Vanguard group | 7.13M | 5.63% | $56.25M |
| Jane street group | 4.16M | 3.34% | $70.15M |
| Driehaus capital management | 3.79M | 3.04% | $63.97M |
| Two sigma investments, lp | 3.51M | 2.81% | $59.11M |
| Morgan stanley | 3.16M | 2.54% | $53.31M |
| Geode capital management | 2.81M | 2.26% | $47.46M |
| State street | 2.71M | 2.18% | $45.73M |
| Ubs group | 2.31M | 1.85% | $38.97M |
| Goldman sachs group | 2.23M | 1.79% | $37.53M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Science & technology partners | 635.11K | 2.80% | $10.71M |
| Palisades investment partners | 369.48K | 2.44% | $6.23M |
| Myda advisors | 735.00K | 2.04% | $12.39M |
| Sender co & partners | 179.24K | 1.84% | $3.02M |
| Thames capital management | 526.83K | 1.59% | $8.88M |
| Lisanti capital growth | 352.38K | 1.50% | $5.94M |
| Wolf hill capital management, lp | 802.92K | 1.31% | $13.54M |
| Cornerstone partners capital management | 30.71K | 1.29% | $517.70K |
| Essex investment management | 445.44K | 1.19% | $7.51M |
| Slt | 101.05K | 1.15% | $1.70M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Jane street group | 4.16M | 0.01% | 3.95M |
| Two sigma investments, lp | 3.51M | 0.05% | 2.07M |
| Massachusetts financial services co /ma/ | 2.02M | 0.01% | 2.02M |
| Price t rowe associates inc /md/ | 1.90M | 0.00% | 1.82M |
| Driehaus capital management | 3.79M | 0.47% | 1.40M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Susquehanna group, llp | 89.17K | 0.00% | -1.60M |
| Board of trustees of the leland stanford junior university | - | - | -1.15M |
| Hudson bay capital management lp | - | - | -1.10M |
| Deutsche bank ag\ | 875.03K | 0.00% | -1.08M |
| Voloridge investment management | 532.00K | 0.04% | -1.07M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Massachusetts financial services co /ma/ | 2.02M | 0.01% | 2.02M | $34.14M |
| Norges bank | 1.30M | 0.00% | 1.30M | $10.30M |
| D. e. shaw | 1.08M | 0.01% | 1.08M | $18.13M |
| Vanguard fiduciary trust | 872.58K | 0.00% | 872.58K | $14.71M |
| Wolf hill capital management, lp | 802.92K | 1.31% | 802.92K | $13.54M |
Sold Out
| Holder | Change |
|---|---|
| Nelson, van denburg & campbell wealth management group | -2.00 |
| Ifp advisors | -9.00 |
| Kestra investment management | -10.00 |
| Dv trading | -16.00 |
| Swan capital | -29.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 171 | -20.83% | 47,985,180 | -29.16% | 38 | 1.35% | 114 | -15.56% | 38 | -25.49% |
| Dec 31, 2025 | 133 | -31.79% | 46,641,212 | -26.69% | 36 | 1.35% | 82 | -46.05% | 30 | 15.38% |
| Sep 30, 2025 | 190 | 48.44% | 63,537,131 | 66.89% | 52 | 5.34% | 148 | 78.31% | 25 | 13.64% |
| Jun 30, 2025 | 125 | 16.82% | 37,991,404 | 82.87% | 31 | 10.06% | 82 | 26.15% | 22 | 37.50% |
| Mar 31, 2025 | 106 | 6.00% | 20,840,400 | 25.25% | 17 | 7.78% | 64 | -3.03% | 16 | 60.00% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 3.34M | 2.44% | 58.59K |
| iShares Russell 2000 ETF | 2.72M | 1.93% | 22.89K |
| Vanguard Institutional Extnd Mkt Idx Tr | 1.46M | 1.06% | 36.65K |
| MFS New Discovery I | 1.48M | 1.05% | -140.95K |
| T. Rowe Price New Horizons | 1.11M | 0.81% | 1.11M |
| US Small-Cap Growth II Equity Comp | 1.11M | 0.81% | 1.11M |
| Fidelity Small Cap Index | 1.08M | 0.77% | 10.67K |
| Xtrackers MSCI USA Swap ETF 1C | 994.45K | 0.76% | -4.67K |
| Heptagon Driehaus US Micro Cap Eq C$ Acc | 1.07M | 0.76% | 144.87K |
| Invesco WilderHill Clean Energy ETF | 986.77K | 0.72% | - |
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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