Amprius Technologies AMPX Institutional Ownership

Updated Oct 11, 2026

Amprius Technologies, Inc. (NYSE:AMPX) had 259 institutional holders reporting a position on Form 13F for the quarter ended June 30, 2026.

• These investors held 67.40% of Amprius Technologies' outstanding shares at the end of Q2 2026, up from 61.45% in Q1 2026.
• Total shares held in Amprius Technologies rose 14.91% from Q1 2026, while the number of holders rose 121.37% from Q2 2025.
• Among the 259 holders of Amprius Technologies, 173 added to their positions, 63 reduced their stakes and 23 left their positions unchanged.
• Combined, institutional investors held 96.7Mn shares of AMPX as of Q2 2026, up 12.55Mn from the prior quarter and up 61.12Mn from a year earlier.
• As of June 30, 2026, the biggest holder of Amprius Technologies was BlackRock, Inc. with 11.34Mn shares, or 7.90% of shares outstanding.
• Among holders that already owned Amprius Technologies, the biggest buyers in Q2 2026 were BlackRock, Inc. (+2.11Mn shares), Morgan Stanley (+1.94Mn shares), UBS Group AG (+1.76Mn shares), Point72 Asset Management, L.P. (+1.11Mn shares) and Renaissance Technologies LLC (+1.05Mn shares).
• The largest position reductions in AMPX for Q2 2026 were by Driehaus Capital Management LLC (-2.45Mn shares), Massachusetts Financial Services Co (-1.52Mn shares), Marshall Wace, LLP (-1.1Mn shares), JPMorgan Chase & Co (-1.09Mn shares) and Jane Street Group, LLC (-759.59K shares).
• Amprius Technologies' 10 largest institutional shareholders as of Q2 2026 were BlackRock, Inc. (11.34Mn shares), Vanguard Capital Management LLC (5.56Mn shares), Morgan Stanley (5.11Mn shares), Two Sigma Investments, LP (4.32Mn shares), UBS Group AG (4.07Mn shares), Geode Capital Management, LLC (3.52Mn shares), Jane Street Group, LLC (3.4Mn shares), State Street Corp (3.24Mn shares), Goldman Sachs Group Inc (2.54Mn shares) and Jupiter Asset Management LTD (2.13Mn shares), per Business Quant data.