HARMONIC INC HLIT
COM · Common Stock · CUSIP 413160102 · ISIN US4131601027
- SectorTechnology
- IndustryRadio & Tv Broadcasting & Communications Equipment
- HeadquartersSan Jose, CA
- Founded1988
- Websiteharmonicinc.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($2.8m this quarter). Holder counts are more reliable. Shares outstanding: 109.1m as of 2026-08-03, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $16.31. Options: 7 managers hold calls ($12.6m notional), 5 hold puts ($2.2m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 209 |
| Q4 2022 | 219 |
| Q1 2023 | 203 |
| Q2 2023 | 225 |
| Q3 2023 | 213 |
| Q4 2023 | 200 |
| Q1 2024 | 200 |
| Q2 2024 | 207 |
| Q3 2024 | 227 |
| Q4 2024 | 232 |
| Q1 2025 | 249 |
| Q2 2025 | 246 |
| Q3 2025 | 241 |
| Q4 2025 | 262 |
| Q1 2026 | 249 |
| Q2 2026 | 258 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 113 | 101 |
| Q4 2024 | 108 | 113 |
| Q1 2025 | 131 | 104 |
| Q2 2025 | 120 | 131 |
| Q3 2025 | 124 | 127 |
| Q4 2025 | 140 | 108 |
| Q1 2026 | 113 | 151 |
| Q2 2026 | 129 | 143 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $393.6k | $345.6k | 0.88 |
| Q4 2025 | $182.0k | $0 | 0.00 |
| Q1 2026 | $8.1k | $219.1k | 27.11 |
| Q2 2026 | $12.6m | $2.2m | 0.18 |
Biggest buyers
| PRICE T ROWE ASSOCIATES INC /MD/ | Added | +4.7m |
| AMERICAN CENTURY COMPANIES INC | Added | +2.0m |
| First Eagle Investment Management, LLC | Added | +1.7m |
| TWO SIGMA INVESTMENTS, LP | Added | +1.6m |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Added | +1.1m |
| RENAISSANCE TECHNOLOGIES LLC | Added | +671.5k |
| JPMORGAN CHASE & CO | Added | +548.9k |
| Point72 Asset Management, L.P. | Added | +488.3k |
| Impax Asset Management Group plc | New | +475.0k |
| MORGAN STANLEY | Added | +452.3k |
Biggest sellers
| ALLIANCEBERNSTEIN L.P. | Reduced | -1.8m |
| Trigran Investments, Inc. | Reduced | -1.3m |
| D. E. Shaw & Co., Inc. | Reduced | -1.2m |
| BlackRock, Inc. | Reduced | -1.2m |
| Qube Research & Technologies Ltd | Sold out | -945.1k |
| Alyeska Investment Group, L.P. | Sold out | -803.8k |
| DIMENSIONAL FUND ADVISORS LP | Reduced | -754.6k |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | -745.1k |
| Clearline Capital LP | Sold out | -726.9k |
| MARSHALL WACE, LLP | Reduced | -691.3k |
Biggest calls
| GROUP ONE TRADING LLC | New | $5.0m307.1k shares |
| SIMPLEX TRADING, LLC | Added | $2.3m138.5k shares |
| CITADEL ADVISORS LLC | New | $1.9m119.4k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $1.3m81.1k shares |
| IMC-Chicago, LLC | New | $836.1k51.2k shares |
| JANE STREET GROUP, LLC | New | $819.8k50.2k shares |
| SYMMETRY PEAK MANAGEMENT LLC | New | $367.4k22.5k shares |
Biggest puts
| IMC-Chicago, LLC | New | $854.1k52.3k shares |
| CITADEL ADVISORS LLC | New | $672.8k41.2k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $591.1k36.2k shares |
| GROUP ONE TRADING LLC | Added | $73.5k4.5k shares |
| SIMPLEX TRADING, LLC | New | $40.8k2.5k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.6% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 5.0% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 4 | $326.6k | 0 | — | — |
| Q2 2025 | 1 | $18.0k | 0 | — | — |
| Q3 2025 | 1 | $16.5k | 0 | — | — |
| Q4 2025 | 1 | $499.0k | 1 | $313.6k | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 2 | $477.8k | — |
| Q3 2026 | 0 | — | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-05-14 | Copeland Stephanie Director | Sold | $57.2k4.3k shares |
| 2026-05-13 | Haltmayer Neven SVP & GM, Video Business | Sold | $420.6k31.8k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 18.0m $294.0m | Reduced -1.2m |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 5.4m $88.0m | Reduced -745.1k |
| STATE STREET CORP 0.00% of their portfolio | 5.1m $84.1m | Added +286.8k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 4.8m $78.3m | Added +4.7m |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 4.8m $77.9m | Added +70.3k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.02% of their portfolio | 3.3m $53.8m | Added +1.1m |
| AMERICAN CENTURY COMPANIES INC 0.02% of their portfolio | 3.2m $52.5m | Added +2.0m |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 2.9m $47.7m | Reduced -754.6k |
| First Eagle Investment Management, LLC 0.04% of their portfolio | 2.9m $47.2m | Added +1.7m |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 2.9m $46.6m | Added +59.0k |
| MORGAN STANLEY 0.00% of their portfolio | 2.1m $34.9m | Added +452.3k |
| Trigran Investments, Inc. 5.68% of their portfolio | 1.9m $31.0m | Reduced -1.3m |
| D. E. Shaw & Co., Inc. 0.02% of their portfolio | 1.9m $30.7m | Reduced -1.2m |
| TWO SIGMA INVESTMENTS, LP 0.02% of their portfolio | 1.7m $28.3m | Added +1.6m |
| RENAISSANCE TECHNOLOGIES LLC 0.04% of their portfolio | 1.7m $28.2m | Added +671.5k |
| Leeward Investments, LLC - MA 1.24% of their portfolio | 1.7m $27.2m | Reduced -34.6k |
| Silverberg Bernstein Capital Management LLC 8.19% of their portfolio | 1.3m $21.4m | Reduced -18.2k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 1.2m $19.4m | Reduced -7.8k |
| Nuveen, LLC 0.00% of their portfolio | 1.1m $18.7m | Reduced -223.8k |
| SYSTEMATIC FINANCIAL MANAGEMENT LP 0.36% of their portfolio | 1.1m $18.0m | Reduced -37.5k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 1.1m $17.2m | Added +9.3k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 843.5k $13.8m | Added +88.0k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 819.3k $13.0m | Added +548.9k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 776.5k $12.7m | Added +48.0k |
| MARSHALL WACE, LLP 0.01% of their portfolio | 754.0k $12.3m | Reduced -691.3k |
| Hillsdale Investment Management Inc. 0.27% of their portfolio | 735.9k $12.0m | Added +65.7k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 710.4k $11.6m | Added +31.5k |
| NEEDHAM INVESTMENT MANAGEMENT LLC 0.34% of their portfolio | 700.0k $11.4m | Added +32.0k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 698.5k $11.4m | Reduced -2.6k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 643.6k $10.5m | Reduced -27.9k |
| Invesco Ltd. 0.00% of their portfolio | 642.4k $10.5m | Added +63.7k |
| NORGES BANK 0.00% of their portfolio | 622.7k $10.2m | Not comparable |
| Point72 Asset Management, L.P. 0.01% of their portfolio | 573.1k $9.4m | Added +488.3k |
| SILVERBACK ASSET MANAGEMENT LLC 1.08% of their portfolio | 525.0k $8.6m | Reduced -123.6k |
| Public Sector Pension Investment Board 0.02% of their portfolio | 517.8k $8.5m | Added +116.3k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 517.4k $8.4m | Reduced -114.9k |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 501.9k $8.2m | Reduced -140.4k |
| SCOPIA CAPITAL MANAGEMENT LP 7.16% of their portfolio | 489.8k $8.0m | Reduced -153.9k |
| FMR LLC 0.00% of their portfolio | 479.9k $7.8m | Added +177.1k |
| Impax Asset Management Group plc 0.05% of their portfolio | 475.0k $7.8m | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.01% of their portfolio | 453.4k $7.4m | Added +366.0k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 359.8k $5.9m | Reduced -253.2k |
| Squarepoint Ops LLC 0.01% of their portfolio | 344.8k $5.6m | Added +286.0k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 326.0k $5.3m | Reduced -474.8k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 320.1k $5.2m | Reduced -218.9k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 304.3k $5.0m | Added +13.6k |
| INTECH INVESTMENT MANAGEMENT LLC 0.04% of their portfolio | 277.1k $4.5m | Reduced -106.8k |
| HERALD INVESTMENT MANAGEMENT Ltd 0.59% of their portfolio | 267.0k $4.4m | Reduced -518.0k |
| ROYCE & ASSOCIATES LP 0.04% of their portfolio | 266.2k $4.3m | Unchanged |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 265.5k $4.3m | Reduced -48.8k |
| PHILADELPHIA TRUST CO 0.26% of their portfolio | 248.4k $4.1m | Reduced -192.2k |
| Legal & General Group Plc 0.00% of their portfolio | 244.4k $4.0m | Reduced -11.7k |
| ExodusPoint Capital Management, LP 0.04% of their portfolio | 244.2k $4.0m | New |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 237.5k $3.9m | Added +173.3k |
| LAZARD ASSET MANAGEMENT LLC 0.01% of their portfolio | 223.3k $3.6m | Added +189.7k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 218.1k $2.0m | Reduced -1.8m |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 217.2k $3.5m | Reduced -91.8k |
| Swiss National Bank 0.00% of their portfolio | 210.2k $3.4m | Reduced -14.1k |
| UBS Group AG 0.00% of their portfolio | 207.7k $3.4m | Reduced -262.1k |
| NORDEA INVESTMENT MANAGEMENT AB 0.00% of their portfolio | 206.5k $3.4m | New |
| BOOTHBAY FUND MANAGEMENT, LLC 0.05% of their portfolio | 166.2k $2.7m | Reduced -163.6k |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 154.7k $2.5m | Added +36.9k |
| MACKENZIE FINANCIAL CORP 0.00% of their portfolio | 149.3k $2.4m | Added +50.3k |
| GABELLI FUNDS LLC 0.02% of their portfolio | 145.0k $2.4m | Added +41.0k |
| Lisanti Capital Growth, LLC 0.51% of their portfolio | 142.5k $2.3m | New |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 142.3k $2.3m | Added +48.4k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 134.4k $2.2m | Reduced -22.6k |
| Jump Financial, LLC 0.02% of their portfolio | 130.2k $2.1m | Added +22.4k |
| MARTINGALE ASSET MANAGEMENT L P 0.05% of their portfolio | 127.3k $2.1m | Reduced -207.4k |
| Man Group plc 0.00% of their portfolio | 126.6k $2.1m | Added +40.9k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 123.0k $2.0m | Reduced -3.7k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 118.6k $1.9m | Added +18.6k |
| STIFEL FINANCIAL CORP 0.00% of their portfolio | 113.0k $1.8m | Reduced -2.0k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 112.8k $1.8m | Reduced -64.1k |
| VIRGINIA RETIREMENT SYSTEMS ET Al 0.01% of their portfolio | 111.3k $1.8m | Added +7.0k |
| CITIGROUP INC 0.00% of their portfolio | 106.8k $1.7m | Added +75.2k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 105.7k $1.7m | Added +60.1k |
| Legato Capital Management LLC 0.14% of their portfolio | 105.5k $1.7m | Added +86.6k |
| Quantbot Technologies LP 0.07% of their portfolio | 104.4k $1.7m | Reduced -59.6k |
| LSV ASSET MANAGEMENT 0.00% of their portfolio | 104.1k $1.7m | Reduced -102.5k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 103.0k $1.7m | Added +32.3k |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 101.2k $1.6m | New |
| WINTON GROUP Ltd 0.05% of their portfolio | 100.0k $1.6m | Reduced -40.3k |
| LMR Partners LLP 0.01% of their portfolio | 99.0k $1.6m | New |
| Y-Intercept (Hong Kong) Ltd 0.03% of their portfolio | 98.1k $1.6m | New |
| Toronado Partners, LLC 4.49% of their portfolio | 97.8k $1.6m | Reduced -467.3k |
| IMC-Chicago, LLC 0.01% of their portfolio | 96.2k $1.6m | New |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 94.3k $1.5m | New |
| GLOBEFLEX CAPITAL L P 0.19% of their portfolio | 89.4k $1.5m | Added +4.4k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 88.4k $1.4m | Added +51.7k |
| FirstWave Capital Management LLC 0.61% of their portfolio | 84.9k $1.4m | New |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 83.7k $1.4m | Added +63.2k |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 80.8k $1.3m | Reduced -13.8k |
| Engineers Gate Manager LP 0.02% of their portfolio | 76.5k $1.2m | Added +28.5k |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 73.2k $1.2m | Unchanged |
| Brevan Howard Capital Management LP 0.02% of their portfolio | 71.9k $1.2m | New |
| Thrivent Financial for Lutherans 0.00% of their portfolio | 71.2k $1.2m | Reduced -3.7k |
| Graham Capital Management, L.P. 0.03% of their portfolio | 70.8k $1.2m | Added +39.3k |
| Illinois Municipal Retirement Fund 0.01% of their portfolio | 66.5k $1.1m | Added +1.4k |
| Susquehanna Portfolio Strategies, LLC 0.02% of their portfolio | 65.9k $1.1m | Reduced -55.5k |