Who Owns AMPRIUS TECHNOLOGIES INC (AMPX.WS)? -- Institutional Holders (2026-06-30)

21 institutions reported holding $100.5M of AMPRIUS TECHNOLOGIES INC (AMPX.WS) in SEC 13F filings for 2026-06-30. Largest institutional holders: GROUP ONE TRADING LLC ($32.7M), IMC-Chicago, LLC ($29.5M), LMR Partners LLP ($11.1M), SIMPLEX TRADING, LLC ($9.5M), Caption Management, LLC ($8.4M). Source: SEC Form 13F.

RankInstitutionValueSharesChange
1GROUP ONE TRADING LLC$32.7M2.4MAdded
2IMC-Chicago, LLC$29.5M2.1MAdded
3LMR Partners LLP$11.1M1.9MTrimmed
4SIMPLEX TRADING, LLC$9.5M688,900Trimmed
5Caption Management, LLC$8.4M1.4MAdded
6HRT FINANCIAL LP$2.2M176,183New
7DRW Securities, LLC$2.1M356,445Added
8SG Americas Securities, LLC$2.0M600,000New
9Janney Montgomery Scott LLC$928,000158,405Added
10ARISTEIA CAPITAL, L.L.C.$829,567142,415Trimmed
11ZAZOVE ASSOCIATES LLC$594,709102,096Trimmed
12BOOTHBAY FUND MANAGEMENT, LLC$554,27539,991Trimmed
13JPMORGAN CHASE & CO$13,5201,000Hold
14UBS Group AG$4,752811New
15Farther Finance Advisors, LLC$122Hold
16D. E. Shaw & Co., Inc.$00Exited
17WOLVERINE ASSET MANAGEMENT LLC$00Exited
18Hudson Bay Capital Management LP$00Exited
19Northwest & Ethical Investments L.P.$00Exited
20Warberg Asset Management LLC$00Exited
21CSS LLC/IL$00Exited

Source: SEC Form 13F filings · as of 2026-06-30