Harmonic Inc.
US ˙ NasdaqGS ˙ US4131601027

SecurityHLIT / Harmonic Inc.
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership47,934 shares
Latest Disclosed Value $ 430,447
Engineers Gate Manager LP reports 11.95% decrease in ownership of HLIT / Harmonic Inc.

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 47,934 shares of Harmonic Inc. (US:HLIT) valued at $430,447 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 54,442 shares of Harmonic Inc.. This represents a change in shares of -11.95% during the quarter. The current value of the position is $702,712 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F HARMONIC COM 413160102 47,934 -6,508 -11.95 430 -20.07 0.0054
2026-02-17 2025-12-31 13F HARMONIC COM 413160102 54,442 54,442 538 0.0064
2025-11-14 2025-09-30 13F HARMONIC COM 413160102 0 -88,157 -100.00 0 -100.00
2025-08-14 2025-06-30 13F HARMONIC COM 413160102 88,157 23,489 36.32 835 34.52 0.0104
2025-05-15 2025-03-31 13F HARMONIC COM 413160102 64,668 8,362 14.85 620 -16.67 0.0105
2025-02-14 2024-12-31 13F HARMONIC COM 413160102 56,306 3,236 6.10 745 -3.75 0.0130
2024-11-14 2024-09-30 13F HARMONIC COM 413160102 53,070 53,070 773 0.0151
2023-11-14 2023-09-30 13F HARMONIC COM 413160102 0 -72,571 -100.00 0 -100.00
2023-08-14 2023-06-30 13F HARMONIC COM 413160102 72,571 72,571 1,173 0.0444
2023-05-15 2023-03-31 13F HARMONIC COM 413160102 0 -57,346 -100.00 0 -100.00
2023-02-14 2022-12-31 13F HARMONIC COM 413160102 57,346 -5,283 -8.44 751 -8.30 0.0451
2022-11-14 2022-09-30 13F HARMONIC COM 413160102 62,629 -154,419 -71.15 819 -56.48 0.0510
2022-08-15 2022-06-30 13F HARMONIC COM 413160102 217,048 166,332 327.97 1,882 299.58 0.0690
2022-05-16 2022-03-31 13F HARMONIC COM 413160102 50,716 -195,631 -79.41 471 -83.74 0.0184
2022-02-14 2021-12-31 13F HARMONIC COM 413160102 246,347 178,275 261.89 2,897 386.07 0.1303
2021-11-15 2021-09-30 13F HARMONIC COM 413160102 68,072 -15,288 -18.34 596 -16.06 0.0340
2021-08-16 2021-06-30 13F HARMONIC COM 413160102 83,360 8,222 10.94 710 20.54 0.0457
2021-05-17 2021-03-31 13F HARMONIC COM 413160102 75,138 75,138 589 0.0292
2020-05-15 2020-03-31 13F HARMONIC COM 413160102 0 -119,945 -100.00 0 -100.00
2020-02-14 2019-12-31 13F HARMONIC COM 413160102 119,945 119,945 936 0.0412
2019-11-14 2019-09-30 13F HARMONIC COM 413160102 0 -61,002 -100.00 0 -100.00
2019-08-14 2019-06-30 13F HARMONIC COM 413160102 61,002 61,002 339 0.0187
2019-05-15 2019-03-31 13F HARMONIC COM 413160102 0 -13,499 -100.00 0 -100.00
2019-02-14 2018-12-31 13F HARMONIC COM 413160102 13,499 13,499 64 0.0051
2017-05-05 2017-03-31 13F HARMONIC COM 413160102 0 -35,822 -100.00 0 -100.00
2017-02-10 2016-12-31 13F HARMONIC COM 413160102 35,822 24,425 214.31 179 163.24 0.0192
2016-11-09 2016-09-30 13F HARMONIC COM 413160102 11,397 -4,174 -26.81 68 54.55 0.0071
2016-08-11 2016-06-30 13F HARMONIC COM 413160102 15,571 -67,961 -81.36 44 -83.88 0.0032
2016-05-09 2016-03-31 13F HARMONIC COM 413160102 83,532 83,532 0.00 273 0.0213
2016-02-05 2015-12-31 13F HARMONIC COM 413160102 0 0 0 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.