Who owns Amprius Technologies, Inc., from the filings themselves: stakes over 5% (Schedule 13D/G), the institutional managers reporting the stock each quarter (13F), and the funds holding it (N-PORT).
Investors crossing 5% ownership must disclose it. Schedule 13G filers certify the stake is passive; Schedule 13D is the general form for everyone else — founders, strategic holders, and activists alike. Each entry is the holder's most recent disclosure. Coverage begins with SEC's structured filings from December 18, 2024; a holder appears once they file or amend after that date.
JANE STREET GROUP, LLC: 3.3% · 4,713,803 shares — Jane Street Capital, LLC: 2.7% · 3,751,460 shares — Jane Street Global Trading, LLC: 0.7% · 962,343 shares
BlackRock, Inc.: 7.4% · 10,700,817 shares
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See every investor who has disclosed crossing 5% of Amprius Technologies, Inc..
Sign up freeEvery institutional manager whose latest 13F reports this stock, largest position first. "% of their portfolio" is the weight inside that manager's own book — how much conviction the position represents; "% of company" is how much of Amprius Technologies, Inc. they hold. Together these 337 managers report 77.44% of shares outstanding.
| Investor | Position value | Shares | % of their portfolio | % of company | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. | $157M | 11,335,092 | 0.00% | 7.76% | June 30, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | $77.1M | 5,562,985 | 0.00% | 3.81% | June 30, 2026 |
335 more institutional holders behind a free account
See every manager reporting Amprius Technologies, Inc., how much of the company they hold, and how big the position is inside their own portfolio.
Sign up freeFunds disclosing this stock in their monthly N-PORT portfolio, with the position's share of the fund's net assets. Together these 201 funds hold 19.49% of shares outstanding — counted inside the manager totals above, not on top of them, since a fund's shares also appear in its manager's 13F.
| Fund | Position value | % of net assets | % of company | As of |
|---|---|---|---|---|
| VANGUARD TOTAL STOCK MARKET INDEX FUND | $53M | 0.00% | 2.62% | June 30, 2026 |
| iShares Russell 2000 ETF | $47.5M | 0.07% | 1.93% | March 31, 2026 |
199 more funds behind a free account
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