AMPX Amprius Technologies, Inc.

NYSE
$9.10

Amprius Technologies, Inc. (AMPX) Institutional Ownership

What the institutions did with AMPX last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.

Managers compared
303
filed both this quarter and last
Managers holding
259
+16 on the quarter
Buyers
171
60 opened new
Sellers
109
44 sold out entirely
Buyer share
61.1%
of managers who traded it
Breadth
+22.1
net buyers, as a share of those trading

Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

Sign in or subscribe

Ownership map

Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.

Cut Unchanged Added Color saturates at ±50%.

Largest holders

Manager Shares % of reported
BlackRock, Inc. 11.3M 11.6%
VANGUARD CAPITAL MANAGEMENT LLC 5.6M 5.7%
MORGAN STANLEY 5.1M 5.2%
TWO SIGMA INVESTMENTS, LP 4.3M 4.4%
UBS Group AG 4.1M 4.2%
GEODE CAPITAL MANAGEMENT, LLC 3.5M 3.6%
JANE STREET GROUP, LLC 3.4M 3.5%
STATE STREET CORP 3.2M 3.3%
GOLDMAN SACHS GROUP INC 2.5M 2.6%
JUPITER ASSET MANAGEMENT LTD 2.1M 2.2%
LMR Partners LLP 1.8M 1.8%
CITADEL ADVISORS LLC 1.7M 1.7%
PRICE T ROWE ASSOCIATES INC /MD/ 1.6M 1.7%
VANGUARD PORTFOLIO MANAGEMENT LLC 1.5M 1.5%
Hood River Capital Management LLC 1.4M 1.4%
RENAISSANCE TECHNOLOGIES LLC 1.4M 1.4%
Driehaus Capital Management LLC 1.3M 1.4%
Baird Financial Group, Inc. 1.3M 1.4%
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 1.2M 1.3%
NORTHERN TRUST CORP 1.2M 1.3%
MILLENNIUM MANAGEMENT LLC 1.2M 1.2%
DEUTSCHE BANK AG\ 1.2M 1.2%
BARCLAYS PLC 1.2M 1.2%
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 1.2M 1.2%
Point72 Asset Management, L.P. 1.1M 1.2%

Largest changes

Manager Action Previous Current Change
Driehaus Capital Management LLC Reduced 3.8M 1.3M -2.4M
JUPITER ASSET MANAGEMENT LTD New 0 2.1M +2.1M
BlackRock, Inc. Increased 9.2M 11.3M +2.1M
MORGAN STANLEY Increased 3.2M 5.1M +1.9M
UBS Group AG Increased 2.3M 4.1M +1.8M
LMR Partners LLP New 0 1.8M +1.8M
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Reduced 2.0M 506.3K -1.5M
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND New 0 1.2M +1.2M
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Sold Out 1.2M 0 -1.2M
Point72 Asset Management, L.P. Increased 27.9K 1.1M +1.1M
MARSHALL WACE, LLP Reduced 1.2M 131.2K -1.1M
JPMORGAN CHASE & CO Reduced 1.2M 123.4K -1.1M
RENAISSANCE TECHNOLOGIES LLC Increased 359.5K 1.4M +1.0M
Nearwater Capital Markets, Ltd New 0 1.0M +1.0M
SUSQUEHANNA INTERNATIONAL GROUP, LLP Increased 89.2K 1.1M +1.0M
HRT FINANCIAL LP Reduced 1.0M 150.2K -852.5K
Shannon River Fund Management LLC New 0 838.9K +838.9K
TWO SIGMA INVESTMENTS, LP Increased 3.5M 4.3M +812.6K
JANE STREET GROUP, LLC Reduced 4.2M 3.4M -759.6K
MYDA Advisors LLC Sold Out 735.0K 0 -735.0K
GEODE CAPITAL MANAGEMENT, LLC Increased 2.8M 3.5M +706.1K
IMC-Chicago, LLC Increased 62.7K 734.1K +671.4K
VANGUARD CAPITAL MANAGEMENT LLC Increased 4.9M 5.6M +654.1K
FIRST TRUST ADVISORS LP Increased 394.6K 1.0M +642.8K
TimesSquare Capital Management, LLC New 0 642.0K +642.0K
Science & Technology Partners, L.P. Sold Out 635.1K 0 -635.1K
VOLORIDGE INVESTMENT MANAGEMENT, LLC Sold Out 532.0K 0 -532.0K
STATE STREET CORP Increased 2.7M 3.2M +527.7K
THAMES CAPITAL MANAGEMENT LLC Sold Out 526.8K 0 -526.8K
Hood River Capital Management LLC Increased 949.1K 1.4M +463.4K
HighTower Advisors, LLC Increased 11.0K 416.4K +405.4K
D. E. Shaw & Co., Inc. Reduced 1.1M 671.8K -403.6K
VANGUARD PORTFOLIO MANAGEMENT LLC Increased 1.1M 1.5M +384.2K
Trexquant Investment LP Increased 716.3K 1.1M +381.3K
WELLINGTON MANAGEMENT GROUP LLP New 0 342.8K +342.8K
Russell Investments Group, Ltd. Reduced 543.5K 203.0K -340.5K
DNB Asset Management AS Increased 153.0K 492.0K +338.9K
Public Sector Pension Investment Board Sold Out 332.0K 0 -332.0K
TUDOR INVESTMENT CORP ET AL Increased 419.7K 747.4K +327.8K
DEUTSCHE BANK AG\ Increased 875.0K 1.2M +321.2K
GOLDMAN SACHS GROUP INC Increased 2.2M 2.5M +316.1K
CANTOR FITZGERALD, L. P. New 0 295.8K +295.8K
Wolf Hill Capital Management, LP Reduced 802.9K 527.3K -275.7K
Calamos Advisors LLC Reduced 364.5K 94.2K -270.3K
CREDIT AGRICOLE S A New 0 265.2K +265.2K
Informed Momentum Co LLC Sold Out 262.0K 0 -262.0K
PRICE T ROWE ASSOCIATES INC /MD/ Reduced 1.9M 1.6M -261.5K
Baird Financial Group, Inc. Reduced 1.6M 1.3M -260.2K
HSBC HOLDINGS PLC New 0 259.5K +259.5K
FEDERATED HERMES, INC. Increased 169.8K 428.7K +258.9K
Lisanti Capital Growth, LLC Reduced 352.4K 113.7K -238.7K
CITADEL ADVISORS LLC Increased 1.4M 1.7M +237.7K
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Sold Out 227.1K 0 -227.1K
GROUP ONE TRADING LLC New 0 213.3K +213.3K
ALGERT GLOBAL LLC Increased 215.3K 424.8K +209.5K
NORTHERN TRUST CORP Increased 1.0M 1.2M +207.0K
ExodusPoint Capital Management, LP New 0 179.3K +179.3K
Stephens Investment Management Group LLC Reduced 893.1K 714.3K -178.8K
Sender Co & Partners, Inc. Increased 179.2K 355.7K +176.4K
MILLENNIUM MANAGEMENT LLC Increased 1.0M 1.2M +172.8K

13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.