AMPX Amprius Technologies, Inc.: institutional ownership and insider trading
278 funds reported holding $1.76B of Amprius Technologies, Inc. in their latest 13F filings; in Q2 2026 funds net bought $298M, with 60 new positions and 47 funds selling out; over the last 12 months insiders bought $0 and sold $85.7M on the open market; over its last four quarters it reported revenue of $109M and net income of −$36.5M.
AMPX revenue and earnings
- Quarter ended Jun 30, 2026: revenue $34.0M, net income −$3.15M, EPS -0.04
- Quarter ended Mar 31, 2026: revenue $28.5M, net income −$5.05M, EPS -0.04
- Quarter ended Dec 31, 2025: revenue $25.2M, net income −$24.4M, EPS -0.19
- Quarter ended Sep 30, 2025: revenue $21.4M, net income −$3.89M, EPS -0.03
Famous investors holding AMPX
- Two Sigma (Two Sigma Investments): $59.9M, 0.0% of the portfolio
- Renaissance Technologies (Renaissance Technologies): $19.5M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $73.0M, 0.0% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $21.3M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $20.1M, 0.0% of the portfolio
Largest institutional holders of AMPX
- BlackRock, Inc. (BLK) — $157M
- JANE STREET GROUP, LLC — $129M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP — $114M
- VANGUARD CAPITAL MANAGEMENT LLC — $77.1M
- UBS Group AG (UBS) — $74.5M
- CITADEL ADVISORS LLC — $73.0M
- MORGAN STANLEY (MS, MS-PA, MS-PE, MS-PF, MS-PI, MS-PK, MS-PL, MS-PO, MS-PP, MS-PQ) — $70.8M
- Point72 Asset Management, L.P. — $60.7M
- TWO SIGMA INVESTMENTS, LP — $59.9M
- VANGUARD GROUP INC — $56.2M
Recent AMPX insider trades
- Aug 24, 2026: Stepien Thomas M sold 31,529 shares ($324K)
- Aug 21, 2026: Sun Kang sold 62,101 shares ($642K)
- Aug 21, 2026: Stefan Constantin Ionel sold 29,681 shares ($307K)
- Jun 15, 2026: Dixon Donald R sold 85,000 shares ($1.46M)
5%+ owners
- BlackRock, Inc.: 7.4% (Schedule 13G/A, filed Jul 27, 2026)
Who owns the most AMPX stock?
The largest institutional holders of Amprius Technologies, Inc. in the latest 13F filings are BlackRock, Inc. (BLK) ($157M), JANE STREET GROUP, LLC ($129M), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($114M).
Are insiders buying or selling AMPX?
Over the last 12 months insiders bought $0 and sold $85.7M of Amprius Technologies, Inc. stock on the open market (SEC Form 4).
Which famous investors own AMPX?
Two Sigma, Renaissance Technologies, Ken Griffin, D. E. Shaw, Izzy Englander.
What was AMPX's revenue last quarter?
Amprius Technologies, Inc. reported revenue of $34.0M for the quarter ended June 30, 2026, with net income of −$3.15M.
Which ETFs hold AMPX?
34 ETFs and mutual funds hold it among their top 100 positions, including SAMT, MNDAX, OBMCX, DRIV.