Amprius Ownership | Who Owns Amprius?
Amprius Ownership Summary
Amprius is owned by 17.67% institutional investors, 9.12% insiders, and 73.21% retail investors. Vanguard group is the largest institutional shareholder, holding 3.78% of AMPX shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.22% of its assets in Amprius shares.
AMPX Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Amprius | 17.67% | 9.12% | 73.21% |
| Sector | Industrials Stocks | 39.05% | 12.85% | 48.10% |
| Industry | Electrical Equipment Stocks | 24.63% | 20.04% | 55.33% |
| Idea | Electric Vehicle Stocks List | 21.51% | 18.90% | 59.59% |
| Idea | EV Battery Stocks List | 17.51% | 18.19% | 64.30% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Vanguard group | 4.18M | 3.78% | $11.70M |
| Invesco | 2.48M | 2.25% | $6.96M |
| Board of trustees of the leland stanford junior university | 1.46M | 1.32% | $4.08M |
| Stifel financial | 895.76K | 0.81% | $2.51M |
| Blackrock | 629.73K | 0.70% | $799.75K |
| Renaissance | 765.10K | 0.69% | $2.14M |
| Millennium management | 717.57K | 0.65% | $2.01M |
| Susquehanna group, llp | 667.92K | 0.60% | $1.87M |
| Geode capital management | 580.82K | 0.53% | $1.63M |
| Blackrock funding, inc. /de | 571.58K | 0.52% | $1.60M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Board of trustees of the leland stanford junior university | 1.46M | 0.35% | $4.08M |
| Lexington partners | 76.76K | 0.26% | $214.94K |
| Axq capital, lp | 15.65K | 0.02% | $43.83K |
| Bridgeway capital management | 195.00K | 0.01% | $546.00K |
| Cowen and company | 250.00K | 0.01% | $317.50K |
| Oppenheimer | 117.15K | 0.00% | $328.02K |
| Blackstone | 257.92K | 0.00% | $722.18K |
| Renaissance | 765.10K | 0.00% | $2.14M |
| Two sigma investments, lp | 443.31K | 0.00% | $1.24M |
| Skaana management | 6.70K | 0.00% | $8.51K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Vanguard group | 4.18M | 0.00% | 3.20M |
| Board of trustees of the leland stanford junior university | 1.46M | 0.35% | 1.46M |
| Invesco | 2.48M | 0.00% | 897.22K |
| Renaissance | 765.10K | 0.00% | 752.00K |
| Millennium management | 717.57K | 0.00% | 717.57K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Zazove associates | - | - | -969.93K |
| Kestra advisory services | - | - | -423.50K |
| Xtx topco | - | - | -280.09K |
| Lmr partners llp | - | - | -165.41K |
| Walleye capital | - | - | -163.61K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Board of trustees of the leland stanford junior university | 1.46M | 0.35% | 1.46M | $4.08M |
| Blackstone | 257.92K | 0.00% | 257.92K | $722.18K |
| Cowen and company | 250.00K | 0.01% | 250.00K | $317.50K |
| Group one trading | 148.42K | 0.00% | 148.42K | $415.57M |
| Oppenheimer | 117.15K | 0.00% | 117.15K | $328.02K |
Sold Out
| Holder | Change |
|---|---|
| Nelson, van denburg & campbell wealth management group | -2.00 |
| Kestra investment management | -10.00 |
| Ifp advisors | -66.00 |
| Capital performance advisors llp | -91.00 |
| Clearstead advisors | -150.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| 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% |
| Mar 31, 2024 | 53 | -10.17% | 4,931,477 | 10.62% | 5 | 21.47% | 22 | -29.03% | 16 | 45.45% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 2.67M | 2.22% | -916.20K |
| iShares Russell 2000 ETF | 2.24M | 1.86% | -36.13K |
| Invesco WilderHill Clean Energy ETF | 1.10M | 0.91% | - |
| iShares Russell 2000 Growth ETF | 826.11K | 0.69% | -2.05K |
| Vanguard Institutional Extnd Mkt Idx Tr | 746.77K | 0.62% | 186.19K |
| Vanguard US Total Market Shares ETF | 593.90K | 0.50% | - |
| Vanguard US Momentum Factor ETF | 539.86K | 0.45% | 80.60K |
| Vanguard Russell 2000 ETF | 474.59K | 0.39% | 388.76K |
| State St Russell Sm Cap® Indx SL Cl I | 328.90K | 0.27% | 308.10K |
| Fidelity Extended Market Index | 247.97K | 0.21% | 41.46K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| May 21, 2025 | Stefan Constantin Ionel | Chief Technology Officer | Sell | $49.53K |
| May 21, 2025 | Wallach Sandra | Chief Financial Officer | Sell | $67.11K |
| May 21, 2025 | Sun Kang | Chief Executive Officer | Sell | $169.72K |
| Feb 21, 2025 | Sun Kang | Chief Executive Officer | Sell | $107.63K |
| Feb 21, 2025 | Wallach Sandra | Chief Financial Officer | Sell | $56.84K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q2 | - | 3 |
| 2025 Q1 | - | 4 |
| 2024 Q4 | - | 6 |
| 2024 Q3 | - | 12 |
| 2024 Q2 | - | 15 |
AMPX Ownership FAQ
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