Harmonic Inc.
US ˙ NasdaqGS ˙ US4131601027

SecurityHLIT / Harmonic Inc.
InstitutionD. E. Shaw & Co., Inc.
ManagerDE Shaw
Latest Disclosed Ownership3,101,896 shares
Latest Disclosed Value $ 27,855,026
D. E. Shaw & Co., Inc. reports 8.78% decrease in ownership of HLIT / Harmonic Inc.

On May 15, 2026 - D. E. Shaw & Co., Inc. filed a 13F-HR form disclosing ownership of 3,101,896 shares of Harmonic Inc. (US:HLIT) valued at $27,855,026 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 3,400,475 shares of Harmonic Inc.. This represents a change in shares of -8.78% during the quarter. The current value of the position is $45,473,795 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 3,101,896 -298,579 -8.78 27,855 -17.17 0.0123
2026-02-17 2025-12-31 13F HARMONIC COM 413160102 3,400,475 304,655 9.84 33,631 6.71 0.0184
2025-11-14 2025-09-30 13F HARMONIC COM 413160102 3,095,820 889,142 40.29 31,515 50.81 0.0178
2025-08-14 2025-06-30 13F HARMONIC COM 413160102 2,206,678 568,485 34.70 20,897 33.02 0.0148
2025-05-15 2025-03-31 13F HARMONIC COM 413160102 1,638,193 1,423,319 662.40 15,710 452.78 0.0140
2025-02-14 2024-12-31 13F HARMONIC COM 413160102 214,874 167,660 355.11 2,843 313.68 0.0021
2024-11-14 2024-09-30 13F HARMONIC COM 413160102 47,214 -12,173 -20.50 688 -1.58 0.0006
2024-08-14 2024-06-30 13F HARMONIC COM 413160102 59,387 16,597 38.79 699 21.39 0.0007
2024-05-15 2024-03-31 13F HARMONIC COM 413160102 42,790 -51,233 -54.49 575 -53.10 0.0005
2024-02-14 2023-12-31 13F HARMONIC COM 413160102 94,023 -19,100 -16.88 1,226 12.58 0.0011
2023-11-14 2023-09-30 13F HARMONIC COM 413160102 113,123 -112,538 -49.87 1,089 -70.15 0.0011
2023-08-14 2023-06-30 13F HARMONIC COM 413160102 225,661 58,354 34.88 3,649 49.45 0.0037
2023-05-15 2023-03-31 13F HARMONIC COM 413160102 167,307 -189,368 -53.09 2,441 -47.75 0.0026
2023-02-14 2022-12-31 13F HARMONIC COM 413160102 356,675 185,367 108.21 4,672 108.66 0.0052
2022-11-14 2022-09-30 13F HARMONIC COM 413160102 171,308 -47,718 -21.79 2,239 17.90 0.0027
2022-08-15 2022-06-30 13F HARMONIC COM 413160102 219,026 72,129 49.10 1,899 39.12 0.0022
2022-05-16 2022-03-31 13F HARMONIC COM 413160102 146,897 -142,268 -49.20 1,365 -59.86 0.0013
2022-02-14 2021-12-31 13F HARMONIC COM 413160102 289,165 -52,356 -15.33 3,401 13.82 0.0028
2021-11-15 2021-09-30 13F HARMONIC COM 413160102 341,521 200,730 142.57 2,988 149.00 0.0027
2021-08-16 2021-06-30 13F HARMONIC COM 413160102 140,791 140,791 1,200 0.0010
2021-05-17 2021-03-31 13F HARMONIC COM 413160102 0 -34,137 -100.00 0 -100.00
2021-02-16 2020-12-31 13F HARMONIC COM 413160102 34,137 -33,681 -49.66 252 -33.33 0.0002
2020-11-16 2020-09-30 13F HARMONIC COM 413160102 67,818 -62,760 -48.06 378 -39.03 0.0004
2020-08-14 2020-06-30 13F HARMONIC COM 413160102 130,578 -147,811 -53.10 620 -61.35 0.0007
2020-05-15 2020-03-31 13F HARMONIC COM 413160102 278,389 53,232 23.64 1,604 -8.66 0.0025
2020-02-14 2019-12-31 13F HARMONIC COM 413160102 225,157 47,002 26.38 1,756 49.83 0.0020
2019-11-14 2019-09-30 13F HARMONIC COM 413160102 178,155 -199,774 -52.86 1,172 -44.11 0.0014
2019-08-14 2019-06-30 13F HARMONIC COM 413160102 377,929 -7,464 -1.94 2,097 0.38 0.0026
2019-05-15 2019-03-31 13F HARMONIC COM 413160102 385,393 9,027 2.40 2,089 17.62 0.0027
2019-02-14 2018-12-31 13F HARMONIC COM 413160102 376,366 69,000 22.45 1,776 5.03 0.0024
2018-11-14 2018-09-30 13F HARMONIC COM 413160102 307,366 -44,426 -12.63 1,691 13.11 0.0020
2018-08-14 2018-06-30 13F HARMONIC COM 413160102 351,792 106,036 43.15 1,495 60.06 0.0020
2018-05-15 2018-03-31 13F HARMONIC COM 413160102 245,756 23,627 10.64 934 0.11 0.0013
2018-02-14 2017-12-31 13F HARMONIC COM 413160102 222,129 30,835 16.12 933 60.03 0.0013
2017-11-14 2017-09-30 13F HARMONIC COM 413160102 191,294 83,636 77.69 583 3.19 0.0009
2017-08-14 2017-06-30 13F HARMONIC COM 413160102 107,658 -46,218 -30.04 565 -38.32 0.0009
2017-05-15 2017-03-31 13F HARMONIC COM 413160102 153,876 -27,711 -15.26 916 0.88 0.0016
2017-02-14 2016-12-31 13F HARMONIC COM 413160102 181,587 -120,905 -39.97 908 -49.39 0.0015
2016-11-14 2016-09-30 13F HARMONIC COM 413160102 302,492 13,509 4.67 1,794 117.72 0.0032
2016-08-15 2016-06-30 13F HARMONIC COM 413160102 288,983 -131,024 -31.20 824 -39.99 0.0015
2016-05-16 2016-03-31 13F HARMONIC COM 413160102 420,007 48,850 13.16 1,373 -9.13 0.0025
2016-02-16 2015-12-31 13F HARMONIC COM 413160102 371,157 177,711 91.87 1,511 34.67 0.0023
2015-11-16 2015-09-30 13F HARMONIC COM 413160102 193,446 8,971 4.86 1,122 -10.95 0.0017
2015-08-14 2015-06-30 13F HARMONIC COM 413160102 184,475 -68,461 -27.07 1,260 -32.76 0.0019
2015-05-15 2015-03-31 13F HARMONIC COM 413160102 252,936 56,603 28.83 1,874 36.19 0.0029
2015-02-17 2014-12-31 13F HARMONIC COM 413160102 196,333 25,755 15.10 1,376 27.17 0.0018
2014-11-14 2014-09-30 13F HARMONIC COM 413160102 170,578 -6,724 -3.79 1,082 -18.22 0.0014
2014-08-14 2014-06-30 13F HARMONIC COM 413160102 177,302 -53,471 -23.17 1,323 -19.72 0.0018
2014-05-15 2014-03-31 13F HARMONIC COM 413160102 230,773 23,607 11.40 1,648 7.78 0.0024
2014-02-14 2013-12-31 13F HARMONIC COM 413160102 207,166 14,419 7.48 1,529 3.17 0.0021
2013-11-20 2013-09-30 13F/A-1 HARMONIC COM 413160102 192,747 165,843 616.43 1,482 766.67 0.0024
2013-11-14 2013-09-30 13F HARMONIC COM 413160102 192,747 1,482
2013-08-14 2013-06-30 13F HARMONIC COM 413160102 26,904 26,904 171 0.0003
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.