AMBQ Ambiq Micro, Inc.: institutional ownership and insider trading
190 funds reported holding $1.51B of Ambiq Micro, Inc. in their latest 13F filings; in Q2 2026 funds net bought $570M, with 99 new positions and 10 funds selling out; over the last 12 months insiders bought $0 and sold $38.9M on the open market.
Famous investors holding AMBQ
- D. E. Shaw (D. E. Shaw & Co.): $86.9M, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $57.6M, 0.0% of the portfolio
- Renaissance Technologies (Renaissance Technologies): $19.0M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $25.5M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $17.1M, 0.0% of the portfolio
Largest institutional holders of AMBQ
- BlackRock, Inc. (BLK) — $122M
- T. Rowe Price Investment Management, Inc. — $88.9M
- D. E. Shaw & Co., Inc. — $86.9M
- Atreides Management, LP — $77.4M
- STATE STREET CORP (STT, STT-PG) — $76.1M
- VANGUARD CAPITAL MANAGEMENT LLC — $67.9M
- TWO SIGMA INVESTMENTS, LP — $57.6M
- GOLDMAN SACHS GROUP INC (GS, GSCE, GS-PA, GS-PC, GS-PD) — $39.5M
- GEODE CAPITAL MANAGEMENT, LLC — $30.0M
- NEEDHAM INVESTMENT MANAGEMENT LLC — $28.6M
Recent AMBQ insider trades
- Oct 15, 2026: Hanson Scott McLean sold 7,000 shares ($357K)
- Oct 15, 2026: Esaka Fumihide sold 5,000 shares ($255K)
- Oct 14, 2026: Chen Sean Chihhsiang sold 15,000 shares ($772K)
- Oct 5, 2026: Chen Sean Chihhsiang sold 14,007 shares ($952K)
5%+ owners
- BlackRock, Inc.: 5.3% (Schedule 13G, filed Jul 27, 2026)