AMPX · Amprius Technologies, Inc.
Market Cap
$1.44B
Shares
146.08M
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 264
Total Value: $1,695,652,188
Total Shares: 122,341,482
Showing 1–100
of 293 holdings by value
· page 1 of 3
Institutional Ownership Trend
16 quarters
Holder Concentration
Across 264 13F filers · Δ vs Mar 31, 2026Top Holder
9.3%
+0.2 pts
Top 5
32.6%
+1.5 pts
Top 10
51.0%
+4.0 pts
HHI
343
Broadly held+32
Quarterly Activity
vs Mar 31, 2026
New
64
Increased
114
Decreased
63
Sold Out
52
Unchanged
23
Holder count:
+12
Institutional value:
-0.7%
Shares held:
+20.7%
Top Buyers
vs Mar 31, 2026| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Large Point72 Asset Management, L.P. | +2,905,790 | 4,379,711 | |
| Mega JANE STREET GROUP, LLC | +2,760,615 | 9,334,871 | |
| Mega UBS Group AG | +2,462,515 | 5,374,069 | |
| Mega BlackRock, Inc. | +2,109,481 | 11,335,092 | |
| Mega MORGAN STANLEY | +1,943,338 | 5,105,505 |
Top Sellers
vs Mar 31, 2026| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Large Driehaus Capital Management LLC | −2,448,909 | 1,345,269 | |
| Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | −1,518,492 | 506,268 | |
| Large MARSHALL WACE, LLP | −1,096,399 | 131,200 | |
| Mega JPMORGAN CHASE & CO | −1,092,808 | 123,377 | |
| Mega Russell Investments Group, Ltd. | −340,504 | 202,959 |
Top New Positions
vs Mar 31, 2026| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Large JUPITER ASSET MANAGEMENT LTD | 2,133,397 | $29,568,882 | |
| Large LMR Partners LLP | 1,750,850 | $24,266,781 | |
| Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 1,248,700 | $17,306,982 | |
| Mid Nearwater Capital Markets, Ltd | 1,034,700 | $14,340,942 | |
| Mid Shannon River Fund Management LLC | 838,887 | $11,626,973 |
Top Sold-Out Positions
vs Mar 31, 2026| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Large WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 1,170,131 | $19,728,408 | |
| Large HRT FINANCIAL LP | 1,002,658 | $16,904,813 | |
| Small MYDA Advisors LLC | 735,000 | $12,392,100 | |
| Large PICTON MAHONEY ASSET MANAGEMENT | 650,000 | $10,959,000 | |
| Small Science & Technology Partners, L.P. | 635,106 | $10,707,887 |
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. | $157,104,367 | 9.27% | 11,335,092 | Shares | 2026-08-07 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $77,102,972 | 4.55% | 5,562,985 | Shares | 2026-08-13 | |
| Mega MORGAN STANLEY | $70,762,297 | 4.17% | 5,105,505 | Shares | 2026-08-13 | |
| Mega JANE STREET GROUP, LLC | $64,048,446 | 3.78% | 4,621,100 | Put | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $63,273,672 | 3.73% | 4,565,200 | Call | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP | $59,856,211 | 3.53% | 4,318,630 | Shares | 2026-08-14 | |
| Mega UBS Group AG | $56,441,646 | 3.33% | 4,072,269 | Shares | 2026-08-13 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | $48,796,277 | 2.88% | 3,520,655 | Shares | 2026-08-12 | |
| Mega JANE STREET GROUP, LLC | $47,138,843 | 2.78% | 3,401,071 | Shares | 2026-08-14 | |
| Mega STATE STREET CORP | $44,910,350 | 2.65% | 3,240,285 | Shares | 2026-08-07 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $35,775,432 | 2.11% | 2,581,200 | Put | 2026-08-14 | |
| Mega GOLDMAN SACHS GROUP INC | $35,236,194 | 2.08% | 2,542,294 | Shares | 2026-08-14 | |
| Large Point72 Asset Management, L.P. | $29,940,372 | 1.77% | 2,160,200 | Call | 2026-08-14 | |
| Large JUPITER ASSET MANAGEMENT LTD | $29,568,882 | 1.74% | 2,133,397 | Shares | 2026-08-10 | |
| Mega CITADEL ADVISORS LLC | $29,032,542 | 1.71% | 2,094,700 | Put | 2026-09-02 | |
| Large LMR Partners LLP | $24,266,781 | 1.43% | 1,750,850 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC | $23,234,127 | 1.37% | 1,676,344 | Shares | 2026-09-02 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ | $22,673,338 | 1.34% | 1,635,883 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC | $20,770,596 | 1.22% | 1,498,600 | Call | 2026-09-02 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC | $20,202,737 | 1.19% | 1,457,629 | Shares | 2026-08-13 | |
| Large Hood River Capital Management LLC | $19,577,471 | 1.15% | 1,412,516 | Shares | 2026-08-14 | |
| Large RENAISSANCE TECHNOLOGIES LLC | $19,527,700 | 1.15% | 1,408,925 | Shares | 2026-08-13 | |
| Large Driehaus Capital Management LLC | $18,645,428 | 1.10% | 1,345,269 | Shares | 2026-08-14 | |
| Large Baird Financial Group, Inc. | $18,363,237 | 1.08% | 1,324,909 | Shares | 2026-08-12 | |
| Mega JANE STREET GROUP, LLC | $18,194,022 | 1.07% | 1,312,700 | Call | 2026-08-14 | |
| Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Pension | $17,306,982 | 1.02% | 1,248,700 | Shares | 2026-08-13 | |
| Mega NORTHERN TRUST CORP Bank | $17,042,641 | 1.01% | 1,229,628 | Shares | 2026-08-13 | |
| Mega MILLENNIUM MANAGEMENT LLC | $16,743,115 | 0.99% | 1,208,017 | Shares | 2026-08-14 | |
| Mega DEUTSCHE BANK AG\ Bank | $16,579,289 | 0.98% | 1,196,197 | Shares | 2026-08-07 | |
| Mega BARCLAYS PLC | $16,366,968 | 0.97% | 1,180,878 | Shares | 2026-08-14 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $16,312,651 | 0.96% | 1,176,959 | Shares | 2026-08-14 | |
| Large Point72 Asset Management, L.P. | $15,797,780 | 0.93% | 1,139,811 | Shares | 2026-08-14 | |
| Mega Qube Research & Technologies Ltd | $15,747,385 | 0.93% | 1,136,175 | Shares | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $15,249,727 | 0.90% | 1,100,269 | Shares | 2026-08-14 | |
| Large Trexquant Investment LP | $15,211,793 | 0.90% | 1,097,532 | Shares | 2026-08-14 | |
| Large Point72 Asset Management, L.P. | $14,964,642 | 0.88% | 1,079,700 | Put | 2026-08-14 | |
| Mega FIRST TRUST ADVISORS LP | $14,377,587 | 0.85% | 1,037,344 | Shares | 2026-08-11 | |
| Mid Nearwater Capital Markets, Ltd | $14,340,942 | 0.85% | 1,034,700 | Shares | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $13,717,117 | 0.81% | 989,691 | Shares | 2026-08-13 | |
| Small DLD Asset Management, LP | $12,643,092 | 0.75% | 912,200 | Call | 2026-08-13 | |
| Mid Shannon River Fund Management LLC | $11,626,973 | 0.69% | 838,887 | Shares | 2026-08-13 | |
| Mega D. E. Shaw & Co., Inc. | $11,295,900 | 0.67% | 815,000 | Put | 2026-08-14 | |
| Mega UBS Group AG | $11,112,948 | 0.66% | 801,800 | Put | 2026-08-13 | |
| Large TUDOR INVESTMENT CORP ET AL | $10,359,352 | 0.61% | 747,428 | Shares | 2026-08-14 | |
| Mid IMC-Chicago, LLC | $10,174,820 | 0.60% | 734,114 | Shares | 2026-08-06 | |
| Large STIFEL FINANCIAL CORP | $10,138,173 | 0.60% | 731,470 | Shares | 2026-08-12 | |
| Mid Stephens Investment Management Group LLC | $9,900,530 | 0.58% | 714,324 | Shares | 2026-07-29 | |
| Mega D. E. Shaw & Co., Inc. | $9,311,314 | 0.55% | 671,812 | Shares | 2026-08-14 | |
| Mid TimesSquare Capital Management, LLC | $8,897,981 | 0.52% | 641,990 | Shares | 2026-08-07 | |
| Mid OBERWEIS ASSET MANAGEMENT INC/ | $8,817,732 | 0.52% | 636,200 | Shares | 2026-08-14 | |
| Large PEAK6 LLC | $8,328,474 | 0.49% | 600,900 | Call | 2026-08-13 | |
| Mega Invesco Ltd. | $7,922,554 | 0.47% | 571,613 | Shares | 2026-08-14 | |
| Mid Wolf Hill Capital Management, LP | $7,307,809 | 0.43% | 527,259 | Shares | 2026-08-13 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund | $7,249,639 | 0.43% | 523,062 | Shares | 2026-08-14 | |
| Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $7,016,874 | 0.41% | 506,268 | Shares | 2026-08-03 | |
| Mid OPPENHEIMER & CO INC | $6,995,779 | 0.41% | 504,746 | Shares | 2026-08-03 | |
| Mega UBS Group AG | $6,930,000 | 0.41% | 500,000 | Call | 2026-08-13 | |
| Large DNB Asset Management AS | $6,818,634 | 0.40% | 491,965 | Shares | 2026-08-11 | |
| Large POLEN CAPITAL MANAGEMENT LLC | $6,453,188 | 0.38% | 465,598 | Shares | 2026-08-04 | |
| Large SEI INVESTMENTS CO | $6,143,167 | 0.36% | 443,230 | Shares | 2026-08-14 | |
| Large FEDERATED HERMES, INC. | $5,941,684 | 0.35% | 428,693 | Shares | 2026-08-12 | |
| Mid ALGERT GLOBAL LLC | $5,888,185 | 0.35% | 424,833 | Shares | 2026-08-13 | |
| Mega Bank of New York Mellon Corp Bank | $5,785,369 | 0.34% | 417,415 | Shares | 2026-08-06 | |
| Large HighTower Advisors, LLC | $5,771,775 | 0.34% | 416,434 | Shares | 2026-08-05 | |
| Mega Nuveen, LLC | $5,513,533 | 0.33% | 397,802 | Shares | 2026-08-11 | |
| Large Parallax Volatility Advisers, L.P. | $5,336,100 | 0.31% | 385,000 | Put | 2026-08-14 | |
| Small Palisades Investment Partners, LLC | $5,106,841 | 0.30% | 368,459 | Shares | 2026-08-04 | |
| Large NOMURA HOLDINGS INC | $5,086,620 | 0.30% | 367,000 | Call | 2026-08-14 | |
| Small Sender Co & Partners, Inc. | $4,929,891 | 0.29% | 355,692 | Shares | 2026-08-14 | |
| Large Allspring Global Investments Holdings, LLC | $4,795,171 | 0.28% | 345,972 | Shares | 2026-08-13 | |
| Mega WELLINGTON MANAGEMENT GROUP LLP | $4,751,166 | 0.28% | 342,797 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $4,543,945 | 0.27% | 327,846 | Shares | 2026-08-14 | |
| Large SILVERCREST ASSET MANAGEMENT GROUP LLC | $4,235,352 | 0.25% | 305,581 | Shares | 2026-08-14 | |
| Mega SG Americas Securities, LLC Broker-Dealer | $3,996,780 | 0.24% | 288,368 | Shares | 2026-08-07 | |
| Small ESSEX INVESTMENT MANAGEMENT CO LLC | $3,944,486 | 0.23% | 284,595 | Shares | 2026-08-06 | |
| Large CREDIT AGRICOLE S A | $3,675,519 | 0.22% | 265,189 | Shares | 2026-08-14 | |
| Mega HSBC HOLDINGS PLC | $3,596,780 | 0.21% | 259,508 | Shares | 2026-08-14 | |
| Large CREDIT AGRICOLE S A | $3,465,000 | 0.20% | 250,000 | Put | 2026-08-14 | |
| Mega Swiss National Bank Bank | $3,430,350 | 0.20% | 247,500 | Shares | 2026-08-11 | |
| Mega MILLENNIUM MANAGEMENT LLC | $3,326,400 | 0.20% | 240,000 | Put | 2026-08-14 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $3,050,624 | 0.18% | 220,103 | Shares | 2026-08-13 | |
| Mid GROUP ONE TRADING LLC | $2,956,504 | 0.17% | 213,312 | Shares | 2026-08-14 | |
| Mid Voleon Capital Management LP | $2,846,081 | 0.17% | 205,345 | Shares | 2026-08-14 | |
| Mega Russell Investments Group, Ltd. | $2,813,008 | 0.17% | 202,959 | Shares | 2026-08-06 | |
| Mega WELLS FARGO & COMPANY/MN | $2,741,105 | 0.16% | 197,771 | Shares | 2026-08-14 | |
| Mega Amundi | $2,727,190 | 0.16% | 196,767 | Shares | 2026-08-11 | |
| Large BLAIR WILLIAM & CO/IL | $2,698,708 | 0.16% | 194,712 | Shares | 2026-08-11 | |
| Mid Aquatic Capital Management LLC | $2,622,797 | 0.15% | 189,235 | Shares | 2026-08-14 | |
| Mid HITE Hedge Asset Management LLC | $2,583,406 | 0.15% | 186,393 | Shares | 2026-08-14 | |
| Large ALPS ADVISORS INC | $2,556,934 | 0.15% | 184,483 | Shares | 2026-07-29 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND Pension | $2,553,386 | 0.15% | 184,227 | Shares | 2026-07-29 | |
| Mega BNP PARIBAS ARBITRAGE, SA | $2,545,125 | 0.15% | 183,631 | Shares | 2026-08-13 | |
| Mid XTX Topco Ltd | $2,497,211 | 0.15% | 180,174 | Shares | 2026-08-14 | |
| Large ExodusPoint Capital Management, LP | $2,484,709 | 0.15% | 179,272 | Shares | 2026-08-14 | |
| Mega AQR CAPITAL MANAGEMENT LLC | $2,399,925 | 0.14% | 173,155 | Shares | 2026-08-14 | |
| Small Huntleigh Advisors, Inc. | $2,370,448 | 0.14% | 171,028 | Shares | 2026-08-04 | |
| Mega RHUMBLINE ADVISERS | $2,327,967 | 0.14% | 167,963 | Shares | 2026-08-12 | |
| Large VOYA INVESTMENT MANAGEMENT LLC | $2,198,999 | 0.13% | 158,658 | Shares | 2026-08-12 | |
| Mega ALLIANCEBERNSTEIN L.P. | $2,107,551 | 0.12% | 152,060 | Shares | 2026-08-14 | |
| Large Janney Montgomery Scott LLC | $2,087,953 | 0.12% | 150,646 | Shares | 2026-08-05 |
Key facts
CIK
1899287
CUSIP
03214Q108
13F (30d)
198 filings
196 filers
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