CALX CALIX, INC: institutional ownership and insider trading
305 funds reported holding $2.80B of CALIX, INC in their latest 13F filings; in Q2 2026 funds net bought $10.1M, with 36 new positions and 59 funds selling out; over the last 12 months insiders bought $0 and sold $59.4M on the open market.
Famous investors holding CALX
- Renaissance Technologies (Renaissance Technologies): $20.5M, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $26.3M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $46.6M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $26.1M, 0.0% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $15.3M, 0.0% of the portfolio
Largest institutional holders of CALX
- BlackRock, Inc. (BLK) — $439M
- VANGUARD GROUP INC — $439M
- VANGUARD PORTFOLIO MANAGEMENT LLC — $209M
- ALLIANCEBERNSTEIN L.P. — $159M
- STATE STREET CORP (STT, STT-PG) — $109M
- VANGUARD CAPITAL MANAGEMENT LLC — $96.6M
- GEODE CAPITAL MANAGEMENT, LLC — $55.3M
- WESTFIELD CAPITAL MANAGEMENT CO LP — $49.4M
- DIMENSIONAL FUND ADVISORS LP — $48.9M
- CITADEL ADVISORS LLC — $46.6M
Recent CALX insider trades
- Jul 27, 2026: Russo Carl sold 75,000 shares ($2.72M)
- Apr 27, 2026: Russo Carl sold 25,000 shares ($1.08M)
- Feb 3, 2026: Russo Carl sold 25,000 shares ($1.18M)
- Nov 10, 2025: Eleniak Shane Todd Marshall sold 24,000 shares ($1.54M)
5%+ owners
- BlackRock, Inc.: 16.2% (Schedule 13G/A, filed Jul 30, 2026)
- Vanguard Portfolio Management: 8.6% (Schedule 13G, filed Apr 29, 2026)
- AllianceBernstein L.P.: 5.0% (Schedule 13G, filed May 18, 2026)