AMPRIUS TECHNOLOGIES INC (AMPX)
Institutional ownership reported to the SEC as of Q2 2026, across 16 quarters.
256
Reporting holders
$1.8B
Reported value
65.9%
Of shares outstanding
24.3%
Held as options
+13
Holder change
Institutions report 96,297,006 shares against 146,080,618 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $157.1M | 11,335,092 | 0.00% | 8q | +22.9%+$29.2M |
| JANE STREET GROUP, LLC | $129.4M | 3,401,071 | 0.01% | 7q | -18.3%-$28.9M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $114.3M | 1,100,269 | 0.01% | 15q | +1133.9%+$105.0M |
| VANGUARD CAPITAL MANAGEMENT LLC | $77.1M | 5,562,985 | 0.00% | 2q | +13.3%+$9.1M |
| UBS Group AG | $74.5M | 4,072,269 | 0.01% | 13q | +76.2%+$32.2M |
| CITADEL ADVISORS LLC | $73.0M | 1,676,344 | 0.01% | 12q | +16.5%+$10.4M |
| MORGAN STANLEY | $70.8M | 5,105,505 | 0.00% | 15q | +61.5%+$26.9M |
| Point72 Asset Management, L.P. | $60.7M | 1,139,811 | 0.07% | 4q | +3982.3%+$59.2M |
| TWO SIGMA INVESTMENTS, LP | $59.9M | 4,318,630 | 0.04% | 9q | +23.2%+$11.3M |
| GEODE CAPITAL MANAGEMENT, LLC | $48.8M | 3,520,655 | 0.00% | 15q | +25.1%+$9.8M |
| STATE STREET CORP | $44.9M | 3,240,285 | 0.00% | 15q | +19.5%+$7.3M |
| IMC-Chicago, LLC | $39.7M | 734,114 | 0.01% | 4q | +1071.2%+$36.3M |
| GROUP ONE TRADING LLC | $35.7M | 213,312 | 0.05% | 15q | HELD |
| GOLDMAN SACHS GROUP INC | $35.2M | 2,542,294 | 0.00% | 9q | +14.2%+$4.4M |
| JUPITER ASSET MANAGEMENT LTD | $29.6M | 2,133,397 | 0.15% | new | NEW |
| LMR Partners LLP | $24.3M | 1,750,850 | 0.09% | new | NEW |
| D. E. Shaw & Co., Inc. | $21.3M | 671,812 | 0.01% | 2q | -37.5%-$12.8M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $20.2M | 1,457,629 | 0.00% | 2q | +35.8%+$5.3M |
| MILLENNIUM MANAGEMENT LLC | $20.1M | 1,208,017 | 0.01% | 7q | +16.7%+$2.9M |
| Hood River Capital Management LLC | $19.6M | 1,412,516 | 0.14% | 3q | +48.8%+$6.4M |
| RENAISSANCE TECHNOLOGIES LLC | $19.5M | 1,408,925 | 0.03% | 8q | +291.9%+$14.5M |
| Driehaus Capital Management LLC | $18.6M | 1,345,269 | 0.11% | 4q | -64.5%-$33.9M |
| Baird Financial Group, Inc. | $18.4M | 1,324,909 | 0.03% | 6q | -16.4%-$3.6M |
| BARCLAYS PLC | $17.8M | 1,180,878 | 0.00% | 13q | +11.9%+$1.9M |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $17.3M | 1,248,700 | 0.02% | new | NEW |
| NORTHERN TRUST CORP | $17.0M | 1,229,628 | 0.00% | 15q | +20.2%+$2.9M |
| DEUTSCHE BANK AG\ | $16.6M | 1,196,197 | 0.00% | 9q | +36.7%+$4.5M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $16.3M | 1,176,959 | 0.00% | 15q | +13.2%+$1.9M |
| Sixth Street Partners Management Company, L.P. | $16.3M | 1,176,959 | 0.00% | new | NEW |
| Qube Research & Technologies Ltd | $15.7M | 1,136,175 | 0.01% | 3q | -7.4%-$1.3M |
| Trexquant Investment LP | $15.2M | 1,097,532 | 0.09% | 4q | +53.2%+$5.3M |
| FIRST TRUST ADVISORS LP | $14.4M | 1,037,344 | 0.01% | 4q | +162.9%+$8.9M |
| Nearwater Capital Markets, Ltd | $14.3M | 1,034,700 | 0.25% | new | NEW |
| VANGUARD FIDUCIARY TRUST CO | $13.7M | 989,691 | 0.00% | 2q | +13.4%+$1.6M |
| DLD Asset Management, LP | $12.6M | options only | 0.84% | 2q | OPTIONS |
| TUDOR INVESTMENT CORP ET AL | $12.5M | 747,428 | 0.02% | 2q | +78.1%+$5.5M |
| Shannon River Fund Management LLC | $11.6M | 838,887 | 1.04% | new | NEW |
| PEAK6 LLC | $11.1M | 66,766 | 0.02% | 4q | HELD |
| STIFEL FINANCIAL CORP | $10.1M | 731,470 | 0.01% | 16q | HELD |
| Stephens Investment Management Group LLC | $9.9M | 714,324 | 0.11% | 4q | -20.0%-$2.5M |
| SIMPLEX TRADING, LLC | $9.5M | options only | 0.01% | 15q | OPTIONS |
| TimesSquare Capital Management, LLC | $8.9M | 641,990 | 0.13% | new | NEW |
| OBERWEIS ASSET MANAGEMENT INC/ | $8.8M | 636,200 | 0.18% | 2q | +8.8%+$709.6K |
| Invesco Ltd. | $7.9M | 571,613 | 0.00% | 12q | +14.6%+$1.0M |
| Wolf Hill Capital Management, LP | $7.3M | 527,259 | 0.61% | 2q | -34.3%-$3.8M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $7.2M | 523,062 | 0.01% | 9q | +6.8%+$463.1K |
| CREDIT AGRICOLE S A | $7.1M | 265,189 | 0.01% | new | NEW |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $7.0M | 506,268 | 0.00% | 2q | -75.0%-$21.0M |
| OPPENHEIMER & CO INC | $7.0M | 504,746 | 0.07% | 7q | +22.4%+$1.3M |
| DNB Asset Management AS | $6.8M | 491,965 | 0.02% | 2q | +221.5%+$4.7M |
| NOMURA HOLDINGS INC | $6.6M | 109,808 | 0.01% | new | NEW |
| POLEN CAPITAL MANAGEMENT LLC | $6.5M | 465,598 | 0.06% | 4q | +10.3%+$602.3K |
| Parallax Volatility Advisers, L.P. | $6.3M | 69,678 | 0.01% | 2q | +70.9%+$2.6M |
| SEI INVESTMENTS CO | $6.1M | 443,230 | 0.01% | 8q | -23.5%-$1.9M |
| Coppell Advisory Solutions LLC | $6.1M | 500 | 0.51% | new | NEW |
| FEDERATED HERMES, INC. | $5.9M | 428,693 | 0.01% | 4q | +152.5%+$3.6M |
| ALGERT GLOBAL LLC | $5.9M | 424,833 | 0.07% | 4q | -1.3%-$80.3K |
| Bank of New York Mellon Corp | $5.8M | 417,415 | 0.00% | 13q | +39.7%+$1.6M |
| HighTower Advisors, LLC | $5.8M | 416,434 | 0.01% | 4q | +3681.3%+$5.6M |
| Nuveen, LLC | $5.5M | 397,802 | 0.00% | 6q | +63.1%+$2.1M |
| ZEVENBERGEN CAPITAL INVESTMENTS LLC | $5.3M | 381,420 | 0.12% | 2q | +61.0%+$2.0M |
| Palisades Investment Partners, LLC | $5.1M | 368,459 | 1.45% | 2q | HELD |
| Sender Co & Partners, Inc. | $4.9M | 355,692 | 1.43% | 2q | +98.4%+$2.4M |
| WELLINGTON MANAGEMENT GROUP LLP | $4.8M | 342,797 | 0.00% | new | NEW |
| Allspring Global Investments Holdings, LLC | $4.7M | 345,972 | 0.01% | 4q | -19.8%-$1.2M |
| BANK OF AMERICA CORP /DE/ | $4.5M | 327,846 | 0.00% | 15q | +23.5%+$865.3K |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | $4.2M | 305,581 | 0.03% | 3q | -4.5%-$198.2K |
| CANTOR FITZGERALD, L. P. | $4.1M | 295,818 | 0.02% | new | NEW |
| ESSEX INVESTMENT MANAGEMENT CO LLC | $3.9M | 284,595 | 0.52% | 6q | -36.1%-$2.2M |
| HSBC HOLDINGS PLC | $3.6M | 259,508 | 0.00% | new | NEW |
| Squarepoint Ops LLC | $3.5M | 69,211 | 0.00% | 5q | -70.2%-$8.1M |
| Swiss National Bank | $3.4M | 247,500 | 0.00% | 4q | +6.5%+$209.3K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $3.1M | 220,103 | 0.00% | 4q | -2.3%-$71.0K |
| Voleon Capital Management LP | $2.8M | 205,345 | 0.05% | 4q | -31.2%-$1.3M |
| Russell Investments Group, Ltd. | $2.8M | 202,959 | 0.00% | 8q | -62.7%-$4.7M |
| WELLS FARGO & COMPANY/MN | $2.7M | 197,771 | 0.00% | 15q | +7.6%+$193.3K |
| Amundi | $2.7M | 196,767 | 0.00% | 3q | +19.6%+$446.0K |
| BLAIR WILLIAM & CO/IL | $2.7M | 194,712 | 0.01% | 4q | +53.8%+$943.7K |
| Aquatic Capital Management LLC | $2.6M | 189,235 | 0.09% | 3q | -33.1%-$1.3M |
| HITE Hedge Asset Management LLC | $2.6M | 186,393 | 0.14% | 6q | +427.8%+$2.1M |
| ALLIANCEBERNSTEIN L.P. | $2.6M | 152,060 | 0.00% | 13q | +40.5%+$738.5K |
| ALPS ADVISORS INC | $2.6M | 184,483 | 0.01% | 4q | +10.2%+$236.5K |
| NEW YORK STATE COMMON RETIREMENT FUND | $2.6M | 184,227 | 0.00% | 13q | +11.2%+$257.8K |
| BNP PARIBAS FINANCIAL MARKETS | $2.5M | 183,631 | 0.00% | 7q | -35.9%-$1.4M |
| XTX Topco Ltd | $2.5M | 180,174 | 0.03% | 2q | +81.4%+$1.1M |
| ExodusPoint Capital Management, LP | $2.5M | 179,272 | 0.02% | new | NEW |
| AQR CAPITAL MANAGEMENT LLC | $2.4M | 173,155 | 0.00% | 9q | +25.7%+$491.0K |
| Huntleigh Advisors, Inc. | $2.4M | 171,028 | 0.33% | 5q | +5.0%+$112.6K |
| RHUMBLINE ADVISERS | $2.3M | 167,963 | 0.00% | 13q | +27.2%+$497.2K |
| VOYA INVESTMENT MANAGEMENT LLC | $2.2M | 158,658 | 0.00% | 5q | +250.0%+$1.6M |
| LPL Financial LLC | $2.0M | 147,233 | 0.00% | 16q | +9.2%+$172.6K |
| MARSHALL WACE, LLP | $1.8M | 131,200 | 0.00% | 2q | -89.3%-$15.2M |
| Marex Group Ltd | $1.8M | 126,930 | 0.01% | 2q | +219.7%+$1.2M |
| JPMORGAN CHASE & CO | $1.8M | 123,377 | 0.00% | 15q | -89.9%-$15.6M |
| Clear Street Group Inc. | $1.7M | 122,474 | 0.00% | new | NEW |
| CANADA PENSION PLAN INVESTMENT BOARD | $1.7M | 119,600 | 0.00% | new | NEW |
| Foundations Investment Advisors, LLC | $1.7M | 119,465 | 0.02% | 5q | +17.2%+$243.5K |
| Legato Capital Management LLC | $1.6M | 118,793 | 0.14% | 6q | -48.0%-$1.5M |
| SLT Holdings LLC | $1.6M | 117,750 | 1.02% | 5q | +16.5%+$231.5K |
| ROYAL BANK OF CANADA | $1.6M | 115,322 | 0.00% | 9q | +13.2%+$185.9K |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-10 | 13G/A | JANE STREET GROUP, LLCwith 2 co-filers | 3.3% |
| 2026-07-27 | 13G/A | BlackRock, Inc. | 7.4% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 256 | $1.8B | 96,297,006 | 63 | 105 | 58 | 24.3% |
| Q1 2026 | 243 | $1.7B | 81,412,259 | 74 | 93 | 52 | 20.1% |
| Q4 2025 | 202 | $607.6M | 67,224,721 | 42 | 82 | 51 | 12.8% |
| Q3 2025 | 183 | $731.8M | 63,813,678 | 89 | 59 | 24 | 8.8% |
| Q2 2025 | 114 | $167.0M | 37,382,957 | 34 | 44 | 18 | 5.7% |
| Q1 2025 | 94 | $60.2M | 20,583,176 | 24 | 31 | 16 | 8.3% |
| Q4 2024 | 92 | $56.2M | 16,610,338 | 30 | 28 | 11 | 17.3% |
| Q3 2024 | 68 | $12.3M | 8,274,527 | 12 | 26 | 12 | 25.6% |
| Q2 2024 | 65 | $14.4M | 8,737,110 | 22 | 20 | 6 | 23.0% |
| Q1 2024 | 45 | $21.2M | 5,061,141 | 4 | 13 | 14 | 36.7% |
| Q4 2023 | 47 | $40.3M | 4,516,579 | 6 | 19 | 6 | 40.7% |
| Q3 2023 | 46 | $29.6M | 4,183,384 | 8 | 15 | 7 | 33.2% |
| Q2 2023 | 43 | $32.7M | 2,699,695 | 19 | 12 | 5 | 40.7% |
| Q1 2023 | 33 | $32.7M | 1,863,436 | 8 | 7 | 5 | 50.4% |
| Q4 2022 | 26 | $24.1M | 1,717,453 | 20 | 1 | 2 | 43.5% |
| Q3 2022 | 13 | $22.2M | 2,289,358 | 13 | 0 | 0 | 5.1% |