Harmonic Inc. (HLIT) Institutional Ownership

Ownership Summary

According to SEC filings for the period ending September 2025, Harmonic Inc. (NASDAQ:HLIT) is held by 238 institutional firms.

• These investors collectively held 84.6% of the company's total shares outstanding in September 2025, down from 88.1% in June 2025.
• On a quarter-over-quarter basis, institutional holdings shifted by -0.41%, with a year-over-year an increase of 4.85% in the count of filers.
• Among the 238 institutional holders of Harmonic, 124 added to their stakes while 89 trimmed their positions and 25 held steady.
• The total number of shares held by institutions in Harmonic decreased to 99.90Mn as of September 2025, a net change of down by 407.91K shares quarter on quarter, and down 7.52Mn shares year over year.
• The top institutional stake in Harmonic as of September 30, 2025 belongs to BlackRock, Inc., which owns 19.32Mn shares, or 16.35% of the company.
• Among the most significant buyers of Harmonic during September 2025 were BlackRock, Inc. (2.34Mn), D. E. Shaw & Co., Inc. (889.14K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (729.27K), Ellsworth Advisors, LLC (498.40K), VOLORIDGE INVESTMENT MANAGEMENT, LLC (268.87K).
• Leading sellers of Harmonic stock in September 2025 included Invesco Ltd. (3.93Mn), UBS Group AG (877.06K), SCOPIA CAPITAL MANAGEMENT LP (469.00K), ROYCE & ASSOCIATES LP (424.62K), Trigran Investments, Inc. (371.59K).
• The top 10 institutional holders of Harmonic for the quarter ending September 2025 included BlackRock, Inc. (19.32Mn), VANGUARD GROUP INC (11.87Mn), STATE STREET CORP (4.39Mn), DIMENSIONAL FUND ADVISORS LP (3.46Mn), Trigran Investments, Inc. (3.22Mn), D. E. Shaw & Co., Inc. (3.10Mn), GEODE CAPITAL MANAGEMENT, LLC (2.81Mn), MILLENNIUM MANAGEMENT LLC (2.66Mn), SCOPIA CAPITAL MANAGEMENT LP (2.56Mn), ALLIANCEBERNSTEIN L.P. (2.41Mn).