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 8.28% of AMPX shares. Vanguard Morn Total Stk Mkt Idx Investor is the top mutual fund, with 2.70% 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 | 49.20% | 16.03% | 34.77% |
| Industry | Electrical Equipment Stocks | 34.58% | 15.80% | 49.62% |
| 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 | 11.34M | 8.28% | $157.10M |
| Vanguard group | 7.13M | 5.63% | $56.25M |
| Vanguard capital management | 5.56M | 4.06% | $77.10M |
| Morgan stanley | 5.11M | 3.73% | $70.76M |
| Jane street group | 4.16M | 3.34% | $70.15M |
| Driehaus capital management | 3.79M | 3.04% | $63.97M |
| Ubs group | 4.07M | 2.97% | $56.44M |
| Two sigma investments, lp | 3.51M | 2.81% | $59.11M |
| Geode capital management | 3.52M | 2.57% | $48.81M |
| State street | 3.24M | 2.37% | $44.91M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Science & technology partners | 635.11K | 2.80% | $10.71M |
| Sender co & partners | 179.24K | 1.84% | $3.02M |
| Palisades investment partners | 368.46K | 1.45% | $5.11M |
| Cornerstone partners capital management | 30.71K | 1.24% | $425.58K |
| Shannon river fund management | 838.89K | 1.04% | $11.63M |
| Slt | 117.75K | 1.02% | $1.63M |
| Wolf hill capital management, lp | 527.26K | 0.61% | $7.31M |
| Alphacentric advisors | 50.00K | 0.59% | $693.00K |
| Essex investment management | 284.60K | 0.52% | $3.94M |
| Driehaus capital management | 3.79M | 0.47% | $63.97M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Jane street group | 4.16M | 0.01% | 3.95M |
| Jupiter asset management | 2.13M | 0.15% | 2.13M |
| Blackrock funding, inc. /de | 11.34M | 0.00% | 2.11M |
| Two sigma investments, lp | 3.51M | 0.05% | 2.07M |
| Morgan stanley | 5.11M | 0.00% | 1.94M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Susquehanna group, llp | 89.17K | 0.00% | -1.60M |
| Massachusetts financial services co /ma/ | 506.27K | 0.00% | -1.52M |
| William blair investment management | - | - | -1.17M |
| Board of trustees of the leland stanford junior university | - | - | -1.15M |
| Hudson bay capital management lp | - | - | -1.10M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 1.30M | 0.00% | 1.30M | $10.30M |
| Healthcare of ontario pension plan trust fund | 1.25M | 0.02% | 1.25M | $17.31M |
| D. e. shaw | 1.08M | 0.01% | 1.08M | $18.13M |
| Shannon river fund management | 838.89K | 1.04% | 838.89K | $11.63M |
| Capitolis liquid global markets | 680.60K | 0.06% | 680.60K | $7.16M |
Sold Out
| Holder | Change |
|---|---|
| Nelson, van denburg & campbell wealth management group | -2.00 |
| Ifp advisors | -9.00 |
| Twin peaks wealth advisors | -9.00 |
| Kestra investment management | -10.00 |
| Dv trading | -16.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 171 | -20.83% | 47,985,180 | -29.16% | 38 | 1.35% | 114 | -15.56% | 38 | -25.49% |
| Dec 31, 2025 | 133 | -31.79% | 46,641,212 | -26.69% | 36 | 1.35% | 82 | -46.05% | 30 | 15.38% |
| Sep 30, 2025 | 190 | 48.44% | 63,537,131 | 66.89% | 52 | 5.34% | 148 | 78.31% | 25 | 13.64% |
| Jun 30, 2025 | 125 | 16.82% | 37,991,404 | 82.87% | 31 | 10.06% | 82 | 26.15% | 22 | 37.50% |
| Mar 31, 2025 | 106 | 6.00% | 20,840,400 | 25.25% | 17 | 7.78% | 64 | -3.03% | 16 | 60.00% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Morn Total Stk Mkt Idx Investor | 3.82M | 2.70% | 513.30K |
| Vanguard Total Stock Mkt Idx Inv | 3.82M | 2.70% | 513.30K |
| iShares Russell 2000 ETF | 3.50M | 2.40% | -62.21K |
| Jupiter Merian Glb Eq Abs Rt I USD Acc | 1.86M | 1.31% | 1.86M |
| Vanguard Institutional Extnd Mkt Idx Tr | 1.62M | 1.15% | 147.34K |
| iShares Russell 2000 Growth ETF | 1.24M | 0.85% | -11.37K |
| Fidelity Small Cap Index | 1.15M | 0.81% | 10.29K |
| Xtrackers MSCI USA Swap ETF 1C | 994.45K | 0.76% | -4.67K |
| Invesco WilderHill Clean Energy ETF | 986.77K | 0.72% | - |
| Heptagon Driehaus US Micro Cap Eq C$ Acc | 963.88K | 0.68% | 2.95K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Jun 15, 2026 | DIXON DONALD R | - | Sell | $1.46M |
| Jun 09, 2026 | DIXON DONALD R | - | Sell | $765.20K |
| Jun 04, 2026 | Stepien Thomas M | Chief Executive Officer | Sell | $41.94K |
| May 27, 2026 | Sun Kang | - | Sell | $6.12K |
| May 27, 2026 | Stepien Thomas M | Chief Executive Officer | Sell | $75.22K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | 12 |
| 2026 Q1 | - | 17 |
| 2025 Q4 | - | 4 |
| 2025 Q3 | - | 3 |
| 2025 Q2 | - | 3 |
AMPX Ownership FAQ
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