Harmonic Inc.
DE ˙ DB ˙ US4131601027
12,25 € ↓ -0,05 (-0,41%)
2026-06-05
DEL PRIS
SecurityDE:HMC / Harmonic Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership1,687,418 shares
Latest Disclosed Value $ 15,153,018
Morgan Stanley reports 6.54% decrease in ownership of HMC / Harmonic Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 1,687,418 shares of Harmonic Inc. (DE:HMC) valued at $12,935,746 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 1,805,488 shares of Harmonic Inc.. This represents a change in shares of -6.54% during the quarter. The current value of the position is $20,670,870 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 1,687,418 -118,070 -6.54 15,153 -15.14 0.0009
2026-05-27 2025-12-31 13F/A-1 HARMONIC COM 413160102 1,805,488 89,053 5.19 17,856 2.19 0.0011
2026-02-13 2025-12-31 13F HARMONIC COM 413160102 1,805,488 89,053 17,856 0.0011
2026-05-27 2025-09-30 13F/A-1 HARMONIC COM 413160102 1,716,435 -281,752 -14.10 17,473 -7.66 0.0011
2025-11-14 2025-09-30 13F HARMONIC COM 413160102 1,716,435 -281,752 17,473 0.0011
2025-08-15 2025-06-30 13F HARMONIC COM 413160102 1,998,187 37,351 1.90 18,923 0.63 0.0012
2025-05-15 2025-03-31 13F HARMONIC COM 413160102 1,960,836 183,606 10.33 18,804 -20.02 0.0013
2025-05-15 2024-12-31 13F/A-1 HARMONIC COM 413160102 1,777,230 -448,372 -20.15 23,513 -27.49 0.0016
2025-02-14 2024-12-31 13F HARMONIC COM 413160102 1,777,230 -448,372 23,513 0.0016
2025-05-14 2024-09-30 13F/A-2 HARMONIC COM 413160102 2,225,602 -345,560 -13.44 32,427 7.15 0.0024
2025-02-14 2024-09-30 13F/A-1 HARMONIC COM 413160102 2,225,602 -345,560 32,427 0.0024
2024-11-14 2024-09-30 13F HARMONIC COM 413160102 2,225,602 -345,560 32,427 0.0003
2025-05-14 2024-06-30 13F/A-2 HARMONIC COM 413160102 2,571,162 544,129 26.84 30,263 11.08 0.0023
2024-10-17 2024-06-30 13F/A-1 HARMONIC COM 413160102 2,571,162 544,129 30,263 0.0023
2024-08-14 2024-06-30 13F HARMONIC COM 413160102 2,571,162 544,129 30,263 0.0023
2024-10-17 2024-03-31 13F/A-2 HARMONIC COM 413160102 2,027,033 146,196 7.77 27,243 11.08 0.0022
2024-08-16 2024-03-31 13F/A-1 HARMONIC COM 413160102 2,027,033 146,196 27,243 0.0003
2024-05-15 2024-03-31 13F HARMONIC COM 413160102 2,027,033 146,196 27,243 0.0022
2024-08-16 2023-12-31 13F/A-1 HARMONIC COM 413160102 1,880,837 226,042 13.66 24,526 53.91 0.0022
2024-02-13 2023-12-31 13F HARMONIC COM 413160102 1,880,837 226,042 24,526 0.0022
2023-11-15 2023-09-30 13F HARMONIC COM 413160102 1,654,795 -355,301 -17.68 15,936 -50.97 0.0016
2023-08-14 2023-06-30 13F HARMONIC COM 413160102 2,010,096 494,379 32.62 32,503 46.98 0.0032
2023-05-15 2023-03-31 13F HARMONIC COM 413160102 1,515,717 9,521 0.63 22,114 12.08 0.0024
2023-02-14 2022-12-31 13F HARMONIC COM 413160102 1,506,196 386,983 34.58 19,731 34.88 0.0022
2022-11-14 2022-09-30 13F HARMONIC COM 413160102 1,119,213 189,655 20.40 14,629 81.52 0.0020
2022-10-27 2022-06-30 13F/A-1 HARMONIC COM 413160102 929,558 276,997 42.45 8,059 32.96 0.0010
2022-08-15 2022-06-30 13F HARMONIC COM 413160102 929,558 276,997 8,059 0.0010
2022-10-27 2022-03-31 13F/A-1 HARMONIC COM 413160102 652,561 63,178 10.72 6,061 -12.56 0.0008
2022-05-13 2022-03-31 13F HARMONIC COM 413160102 652,561 63,178 6,061 0.0008
2022-02-14 2021-12-31 13F HARMONIC COM 413160102 589,383 -57,737 -8.92 6,932 22.45 0.0009
2021-11-15 2021-09-30 13F HARMONIC COM 413160102 647,120 -77,536 -10.70 5,661 -8.31 0.0008
2021-08-23 2021-06-30 13F/A-1 HARMONIC COM 413160102 724,656 20,087 2.85 6,174 11.77 0.0008
2021-08-16 2021-06-30 13F HARMONIC COM 413160102 724,656 20,087 6,174 0.0002
2021-05-17 2021-03-31 13F HARMONIC COM 413160102 704,569 384,128 119.87 5,524 133.28 0.0008
2021-02-16 2020-12-31 13F HARMONIC COM 413160102 320,441 85,132 36.18 2,368 80.35 0.0004
2020-11-13 2020-09-30 13F HARMONIC COM 413160102 235,309 -20,934 -8.17 1,313 7.89 0.0003
2020-08-14 2020-06-30 13F HARMONIC COM 413160102 256,243 12,310 5.05 1,217 -13.38 0.0003
2020-05-26 2020-03-31 13F/A-1 HARMONIC COM 413160102 243,933 -202,094 -45.31 1,405 -59.61 0.0004
2020-05-15 2020-03-31 13F HARMONIC COM 413160102 243,933 -202,094 1,405 107.9333
2020-02-14 2019-12-31 13F HARMONIC COM 413160102 446,027 143,964 47.66 3,479 75.09 0.0008
2019-11-14 2019-09-30 13F HARMONIC COM 413160102 302,063 -82,639 -21.48 1,987 -6.98 0.0005
2019-08-14 2019-06-30 13F HARMONIC COM 413160102 384,702 -8,942 -2.27 2,136 0.09 0.0006
2019-05-15 2019-03-31 13F HARMONIC COM 413160102 393,644 263,764 203.08 2,134 248.69 0.0006
2019-02-14 2018-12-31 13F HARMONIC COM 413160102 129,880 -167,230 -56.29 612 -62.57 0.0002
2019-04-23 2018-09-30 13F/A-2 HARMONIC COM 413160102 297,110 118,179 66.05 1,635 115.13 0.0004
2018-11-20 2018-09-30 13F/A-1 HARMONIC COM 413160102 297,110 0 1,635 0.0004
2018-11-14 2018-09-30 13F HARMONIC COM 413160102 297,110 118,179 1,635
2019-04-23 2018-06-30 13F/A-1 HARMONIC COM 413160102 178,931 12,728 7.66 760 20.25 0.0002
2018-08-14 2018-06-30 13F HARMONIC COM 413160102 178,931 12,728 760
2019-04-23 2018-03-31 13F/A-1 HARMONIC COM 413160102 166,203 9,803 6.27 632 -3.81 0.0002
2018-05-14 2018-03-31 13F HARMONIC COM 413160102 166,203 9,803 632
2019-04-23 2017-12-31 13F/A-1 HARMONIC COM 413160102 156,400 -20,955 -11.82 657 21.44 0.0002
2018-02-14 2017-12-31 13F HARMONIC COM 413160102 156,400 -20,955 657
2017-11-14 2017-09-30 13F HARMONIC COM 413160102 177,355 108,125 156.18 541 48.63 0.0002
2017-08-11 2017-06-30 13F HARMONIC COM 413160102 69,230 -32,508 -31.95 364 -39.93 0.0001
2017-05-22 2017-03-31 13F/A-1 HARMONIC COM 413160102 101,738 -121,833 -54.49 606 -45.80 0.0002
2017-05-12 2017-03-31 13F HARMONIC COM 413160102 101,738 606
2017-02-22 2016-12-31 13F/A-1 HARMONIC COM 413160102 223,571 206,491 1,208.96 1,118 1,006.93 0.0004
2017-02-13 2016-12-31 13F HARMONIC COM 413160102 223,571 1,118
2016-11-10 2016-09-30 13F HARMONIC COM 413160102 17,080 15,085 756.14 101 1,583.33 0.0000
2016-08-12 2016-06-30 13F HARMONIC COM 413160102 1,995 -25,710 -92.80 6 -93.41 0.0000
2016-05-12 2016-03-31 13F HARMONIC COM 413160102 27,705 -112,638 -80.26 91 -84.06 0.0000
2016-02-09 2015-12-31 13F HARMONIC COM 413160102 140,343 115,425 463.22 571 293.79 0.0002
2016-02-08 2015-09-30 13F/A-1 HARMONIC COM 413160102 24,918 -38,251 -60.55 145 -66.44 0.0001
2015-11-09 2015-09-30 13F HARMONIC COM 413160102 24,918 145
2015-08-12 2015-06-30 13F HARMONIC COM 413160102 63,169 -70,789 -52.84 432 -56.45 0.0001
2015-05-14 2015-03-31 13F HARMONIC COM 413160102 133,958 14,880 12.50 992 18.80 0.0004
2015-02-13 2014-12-31 13F HARMONIC COM 413160102 119,078 72,045 153.18 835 180.20 0.0003
2014-12-16 2014-09-30 13F/A-1 HARMONIC COM 413160102 47,033 -195,790 -80.63 298 -82.80 0.0001
2014-11-14 2014-09-30 13F HARMONIC COM 413160102 47,033 298
2014-05-13 2014-03-31 13F HARMONIC COM 413160102 242,823 -20,588 -7.82 1,733 -10.81 0.0007
2014-02-13 2013-12-31 13F HARMONIC COM 413160102 263,411 -55,003 -17.27 1,943 -20.53 0.0008
2013-11-13 2013-09-30 13F HARMONIC INC COM ST COM 413160102 318,414 282,120 777.32 2,445 958.44 0.0012
2013-08-08 2013-06-30 13F HARMONIC INC COM ST COM 413160102 36,294 36,294 231 0.0001
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.