Who Owns Amprius Technologies, Inc. (AMPX)?Hedge Fund & Institutional Holders

$17.85-0.44 (-2.41%)IndustrialsNYSE

Institutional Holders

50

as of Q4 2025

Total Institutional Value

$4.812834000270002e+206T

% of Float Held

Infinity%

QoQ Change in Holders

+15 / -2

Price History

$0.86$5.29$9.72$14.16$18.59Sep 24Jun 25Mar 26

AMPX — Biggest New Institutional Buyers This Quarter

FundActionShares AddedValue Added
Stephens Investment Management Group LLCNew Position+1.4M+$11.4M
NORGES BANKNew Position+1.3M+$10.0M
Hudson Bay Capital Management LPNew Position+1.1M+$8.0M
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLCNew Position+985K+$7.8M
Hood River Capital Management LLCNew Position+810K+$6.4M
Qube Research & Technologies LtdNew Position+874K+$6.0M
THAMES CAPITAL MANAGEMENT LLCNew Position+527K+$4.2M
ESSEX INVESTMENT MANAGEMENT CO LLCNew Position+517K+$4.1M
OPPENHEIMER & CO INCNew Position+442K+$3.5M
SG Americas Securities, LLCNew Position+255K+$2.0M
FEDERATED HERMES, INC.New Position+287K+$2.0M
SILVERCREST ASSET MANAGEMENT GROUP LLCNew Position+359K+$2.0M
HUSSMAN STRATEGIC ADVISORS, INC.New Position+210K+$1.7M
Lisanti Capital Growth, LLCNew Position+199K+$1.6M
Huntleigh Advisors, Inc.New Position+161K+$1.3M

AMPX — Institutions Reducing or Closing Positions

FundActionShares SoldValue Sold
DRIEHAUS CAPITAL MANAGEMENT LLCDecreased-697K-$32.5B
CITADEL ADVISORS LLCDecreased-2.1M-$26.4B
Invesco Ltd.Decreased-1.1M-$25.0B
DEUTSCHE BANK AG\Decreased-112K-$21.7B
BNP PARIBAS FINANCIAL MARKETSDecreased-1.2M-$20.4B
VOLORIDGE INVESTMENT MANAGEMENT, LLCDecreased-274K-$19.7B
TWO SIGMA INVESTMENTS, LPDecreased-317K-$18.4B
Baird Financial Group, Inc.Decreased-103K-$9.2B
TWO SIGMA ADVISERS, LPDecreased-333K-$8.5B
STIFEL FINANCIAL CORPDecreased-24K-$8.4B
TUDOR INVESTMENT CORP ET ALClosed Position-716K-$7.5B
Capitolis Liquid Global Markets LLCClosed Position-681K-$7.2B
JANE STREET GROUP, LLCDecreased-463K-$7.1B
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.Decreased-20K-$5.4B
Informed Momentum Co LLCDecreased-252K-$5.1B

Top Institutional Holders(Q4 2025)

#FundSharesValue% of PortfolioType
1VANGUARD GROUP INC6,099,966$48.1M0.00%Share
2BlackRock, Inc.4,416,281$34.0M0.00%Share
3BlackRock, Inc.3,425,465$27.0M0.00%Share
4STATE STREET CORP2,553,710$20.0M0.00%Share
5MORGAN STANLEY2,527,728$19.0M0.00%Share
6DRIEHAUS CAPITAL MANAGEMENT LLC2,393,212$18.9M0.13%Share
7SUSQUEHANNA INTERNATIONAL GROUP, LLP2,311,200$18.0M0.00%Call
8GEODE CAPITAL MANAGEMENT, LLC2,279,419$17.0M0.00%Share
9UBS Group AG2,068,264$16.3M0.00%Share
10DEUTSCHE BANK AG\1,952,972$15.0M0.00%Share
11SUSQUEHANNA INTERNATIONAL GROUP, LLP1,673,720$13.0M0.00%Share
12VOLORIDGE INVESTMENT MANAGEMENT, LLC1,602,001$12.0M0.04%Share
13Stephens Investment Management Group LLC1,441,698$11.4M0.15%Share
14TWO SIGMA INVESTMENTS, LP1,436,939$11.0M0.02%Share
15GOLDMAN SACHS GROUP INC1,401,014$11.0M0.00%Share
16NORGES BANK1,304,838$10.0M0.00%Share
17Invesco Ltd.1,246,702$9.8M0.00%Share
18CHARLES SCHWAB INVESTMENT MANAGEMENT INC1,036,891$8.0M0.00%Share
19MILLENNIUM MANAGEMENT LLC1,085,270$8.0M0.00%Share
20SUSQUEHANNA INTERNATIONAL GROUP, LLP1,056,400$8.0M0.00%Put
21Hudson Bay Capital Management LP1,100,000$8.0M0.03%Share
22WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC984,906$7.8M0.02%Share
23JANE STREET GROUP, LLC894,800$7.0M0.00%Call
24VANGUARD GROUP INC848,629$6.7M0.00%Share
25Hood River Capital Management LLC809,744$6.4M0.07%Share
26JUPITER ASSET MANAGEMENT LTD774,225$6.1M0.05%Share
27NORTHERN TRUST CORP851,313$6.0M0.00%Share
28Baird Financial Group, Inc.773,428$6.0M0.01%Share
29Qube Research & Technologies Ltd874,080$6.0M0.01%Share
30GOLDMAN SACHS GROUP INC793,827$6.0M0.00%Share
31STIFEL FINANCIAL CORP771,408$6.0M0.01%Share
32CITADEL ADVISORS LLC746,300$5.0M0.00%Call
33BNP PARIBAS FINANCIAL MARKETS707,079$5.0M0.00%Share
34BARCLAYS PLC750,000$5.0M0.00%Call
35GROUP ONE TRADING LLC539,800$4.3M0.01%Call
36THAMES CAPITAL MANAGEMENT LLC526,832$4.2M0.60%Share
37ESSEX INVESTMENT MANAGEMENT CO LLC516,765$4.1M0.62%Share
38Point72 Asset Management, L.P.619,300$4.0M0.00%Call
39SIMPLEX TRADING, LLC511,800$4.0M0.00%Call
40Artemis Investment Management LLP464,029$3.7M0.04%Share
41IMC-Chicago, LLC443,200$3.5M0.00%Call
42OPPENHEIMER & CO INC442,090$3.5M0.05%Share
43OSTERWEIS CAPITAL MANAGEMENT INC454,830$3.0M0.13%Share
44MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.490,886$3.0M0.00%Share
45GEODE CAPITAL MANAGEMENT, LLC398,998$3.0M0.00%Share
46Point72 Asset Management, L.P.493,862$3.0M0.00%Share
47BARCLAYS PLC469,906$3.0M0.00%Share
48TWO SIGMA ADVISERS, LP479,500$3.0M0.01%Share
49CITADEL ADVISORS LLC505,300$3.0M0.00%Put
50SEI INVESTMENTS CO416,742$3.0M0.00%Share

AMPX Institutional Ownership History

QuarterHoldersTotal ValueChange
Q4 2025202$475.2M+62
Q3 2025140$607.5B+37
Q2 2025103$127.5B+5
Q1 202598$54.5B+10
Q4 202488$81.0B+25
Q3 202463$6.3T+3
Q2 202460$5.1T+17
Q1 202443$9.8T—

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As of Q4 2025, 50 institutional investors hold AMPX (Amprius Technologies, Inc.). The largest holder is VANGUARD GROUP INC with $48.1M in shares. This quarter, 15 institutions opened new positions and 2 closed their positions.

Frequently Asked Questions

How many hedge funds own AMPX?

As of Q4 2025, 50 institutional investors report holding AMPX (Amprius Technologies, Inc.) in their 13F filings.

Who is the largest institutional holder of AMPX?

The largest institutional holder of AMPX is VANGUARD GROUP INC with $48.1M in shares.

Is institutional ownership of AMPX increasing or decreasing?

This quarter, 15 institutions opened new positions in AMPX and 2 closed their positions.