Amprius Technologies AMPX Institutional Ownership

Amprius Technologies, Inc. (NYSE:AMPX) has 260 institutional investors with active 13F positions as of June 2026.

• They owned 68.2% of outstanding stock in June 2026, up from 61.5% the prior quarter.
• They increased total shares held in Amprius Technologies by 26.47% from the prior quarter, while the number of investors in AMPX increased 118.49% year over year.
• Activity in AMPX broke down as 174 buyers, 63 sellers, and 23 unchanged among 260 total holders.
• The aggregate institutional position in Amprius Technologies amounted to 97.88Mn shares as of June 2026, up by 20.49Mn shares quarter on quarter, and up 61.86Mn shares year over year.
• BlackRock, Inc. holds the largest position in AMPX at 11.34Mn shares as of June 30, 2026, or 7.9% of shares outstanding.
• The largest buyers of Amprius Technologies for the quarter ending June 2026 were JUPITER ASSET MANAGEMENT LTD (2.13Mn), BlackRock, Inc. (2.11Mn), Morgan Stanley (1.94Mn), UBS Group AG (1.76Mn), LMR Partners LLP (1.75Mn).
• The largest sales of AMPX for the quarter ending June 2026 came from DRIEHAUS CAPITAL MANAGEMENT LLC (2.45Mn), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (1.52Mn), MARSHALL WACE, LLP (1.1Mn), Jpmorgan Chase & Co (1.09Mn), JANE STREET GROUP, LLC (759.58K).
• Business Quant data shows the 10 biggest positions in Amprius Technologies as of June 2026 are held by BlackRock, Inc. (11.34Mn), VANGUARD CAPITAL MANAGEMENT LLC (5.56Mn), Morgan Stanley (5.11Mn), TWO SIGMA INVESTMENTS, LP (4.32Mn), UBS Group AG (4.07Mn), GEODE CAPITAL MANAGEMENT, LLC (3.52Mn), JANE STREET GROUP, LLC (3.4Mn), State Street Corp (3.24Mn), Goldman Sachs Group Inc (2.54Mn), JUPITER ASSET MANAGEMENT LTD (2.13Mn).