Calix, Inc (CALX) Institutional Ownership

Ownership Summary

Calix, Inc (NYSE:CALX) has 321 institutional investors that have filed 13F reports for the period ending December 2025.

• They owned 84.0% of outstanding stock in December 2025, up from 82.3% the prior quarter.
• They increased total shares held in CALX by 9.5% quarter over quarter, and investors in Calix increased 27.38% from a year ago.
• Of these 321 holders, 184 added to their stakes in Calix, 95 trimmed positions, and 42 made no changes.
• Institutional investors collectively held 58.62Mn shares in Calix as of December 2025, up by 5.08Mn shares quarter on quarter, and up 299.78K shares year over year.
• BlackRock, Inc. holds the largest position in CALX at 11.15Mn shares as of December 31, 2025, or 15.98% of shares outstanding.
• The most significant purchases of CALX for the quarter ending December 2025 came from VANGUARD PORTFOLIO MANAGEMENT LLC (5.53Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.69Mn), ALLIANCEBERNSTEIN L.P. (1.79Mn), GILDER GAGNON HOWE & CO LLC (779.09K), Point72 Asset Management, L.P. (513.81K).
• The largest sales of CALX for the quarter ending December 2025 came from LORD, ABBETT & CO. LLC (866.19K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (726.36K), Goldman Sachs Group Inc (496.0K), NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO (349.93K), BlackRock, Inc. (309.54K).
• Per Business Quant data, the top 10 holders of Calix for the quarter ending December 2025 are BlackRock, Inc. (11.15Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (5.53Mn), ALLIANCEBERNSTEIN L.P. (3.25Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.69Mn), State Street Corp (2.6Mn), MILLENNIUM MANAGEMENT LLC (1.9Mn), CONGRESS ASSET MANAGEMENT CO (1.64Mn), WESTFIELD CAPITAL MANAGEMENT CO LP (1.55Mn), GEODE CAPITAL MANAGEMENT, LLC (1.44Mn), DIMENSIONAL FUND ADVISORS LP (1.22Mn).