Harmonic Inc. (HLIT) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

77,756,989Shares Outstanding

1,160,008Shares held by institutions

$12,470,086Value of institutional holdings

98.10%Institutional ownership %

-9.13%Shares Changed QoQ

139No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Recent 13F filings as of December 2025 show that 243 institutional investors hold a position in Harmonic Inc. (NASDAQ:HLIT).

The percentage of Harmonic owned by institutions changed from 84.6% in September 2025 to 82.3% in December 2025, marking a slight down trend.
Institutional share ownership changed by 1.23% QoQ, while the number of institutional owners saw an increase of 6.11% YoY.
A review of institutional activity for Harmonic shows 135 of 243 filers increasing their positions, while 80 reduced their stake, and 28 remained unchanged.
Collectively, institutional investors increased their stake in Harmonic to 97.19Mn shares as of December 2025, a change that is up by 1.18Mn shares quarter on quarter and down 13.26Mn shares year over year.
BlackRock, Inc. continues to be the largest institutional holder of Harmonic as of December 31, 2025, with a position of 19.24Mn shares, representing 16.29% of the company's outstanding stock.
Among the most significant buyers of Harmonic during December 2025 were ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (1.16Mn), Walleye Capital LLC (726.23K), AMERICAN CENTURY COMPANIES INC (337.06K), D. E. Shaw & Co., Inc. (304.65K), MARTINGALE ASSET MANAGEMENT L P (262.12K).
Leading sellers of Harmonic stock in December 2025 included Alyeska Investment Group, L.P. (805.29K), TUDOR INVESTMENT CORP ET AL (724.08K), SCOPIA CAPITAL MANAGEMENT LP (657.90K), Neuberger Berman Group LLC (431.50K), MARSHALL WACE, LLP (290.49K).
The top 10 institutional holders of Harmonic for the quarter ending December 2025 included BlackRock, Inc. (19.24Mn), VANGUARD GROUP INC (12.02Mn), STATE STREET CORP (4.47Mn), DIMENSIONAL FUND ADVISORS LP (3.49Mn), D. E. Shaw & Co., Inc. (3.40Mn), Trigran Investments, Inc. (3.22Mn), GEODE CAPITAL MANAGEMENT, LLC (2.74Mn), MILLENNIUM MANAGEMENT LLC (2.47Mn), ALLIANCEBERNSTEIN L.P. (2.40Mn), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (2.14Mn).

243 Institutional Holders

1,160,008 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	19,244,753	-74,792	-0.39%	$190,330,608.00
VANGUARD GROUP INC	31 Dec, 2025	12,022,963	148,281	1.25%	$118,907,103.00
STATE STREET CORP	31 Dec, 2025	4,471,187	80,791	1.84%	$44,220,039.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	3,485,105	24,062	0.70%	$34,467,991.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	3,400,475	304,655	9.84%	$33,630,698.00
Trigran Investments, Inc.	31 Dec, 2025	3,221,401	0	0.00%	$31,859,656.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	2,735,649	-72,847	-2.59%	$27,060,630.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	2,465,593	-197,547	-7.42%	$24,384,715.00
ALLIANCEBERNSTEIN L.P.	31 Dec, 2025	2,399,636	-7,309	-0.30%	$23,732,400.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	2,142,312	1,161,828	118.50%	$21,187,466.00
SCOPIA CAPITAL MANAGEMENT LP	31 Dec, 2025	1,904,852	-657,904	-25.67%	$18,838,986.00
MARSHALL WACE, LLP	31 Dec, 2025	1,842,139	-290,486	-13.62%	$18,218,754.00
MORGAN STANLEY	31 Dec, 2025	1,805,488	89,053	5.19%	$17,856,288.00
Leeward Investments, LLC - MA	31 Dec, 2025	1,743,158	90,325	5.46%	$17,239,833.00
Silverberg Bernstein Capital Management LLC	31 Dec, 2025	1,299,638	52,545	4.21%	$12,853,420.00
Alyeska Investment Group, L.P.	31 Dec, 2025	1,208,510	-805,294	-39.99%	$11,952,164.00
Nuveen, LLC	31 Dec, 2025	1,199,617	-176,871	-12.85%	$11,864,212.00
NORTHERN TRUST CORP	31 Dec, 2025	1,168,869	-89,913	-7.14%	$11,560,114.00
SYSTEMATIC FINANCIAL MANAGEMENT LP	31 Dec, 2025	1,149,716	-16,168	-1.39%	$11,370,700.00
Qube Research & Technologies Ltd	31 Dec, 2025	1,127,261	51,995	4.84%	$11,148,611.00

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