Harmonic Inc.
US ˙ NasdaqGS ˙ US4131601027

SecurityHLIT / Harmonic Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership31,644 shares
Latest Disclosed Value $ 284,163
Citigroup Inc reports 73.32% decrease in ownership of HLIT / Harmonic Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 31,644 shares of Harmonic Inc. (US:HLIT) valued at $284,163 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 118,623 shares of Harmonic Inc.. This represents a change in shares of -73.32% during the quarter. The current value of the position is $462,319 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)
2026-05-11 2026-03-31 13F HARMONIC COM 413160102 31,644 -86,979 -73.32 284 -75.79 0.0001
2026-02-13 2025-12-31 13F HARMONIC COM 413160102 118,623 77,521 188.61 1,173 180.62 0.0005
2025-11-10 2025-09-30 13F HARMONIC COM 413160102 41,102 -66,665 -61.86 418 -59.02 0.0002
2025-08-11 2025-06-30 13F HARMONIC COM 413160102 107,767 -60,095 -35.80 1,021 -36.61 0.0005
2025-05-12 2025-03-31 13F HARMONIC COM 413160102 167,862 5,193 3.19 1,610 -25.23 0.0008
2025-02-12 2024-12-31 13F HARMONIC COM 413160102 162,669 22,529 16.08 2,152 5.44 0.0013
2024-11-12 2024-09-30 13F HARMONIC COM 413160102 140,140 62,133 79.65 2,042 122.33 0.0012
2024-08-12 2024-06-30 13F HARMONIC COM 413160102 78,007 8,017 11.45 918 -2.34 0.0006
2024-05-10 2024-03-31 13F HARMONIC COM 413160102 69,990 -4,425 -5.95 941 -3.09 0.0006
2024-02-09 2023-12-31 13F HARMONIC COM 413160102 74,415 27,179 57.54 970 113.66 0.0007
2023-12-06 2023-09-30 13F/A-1 HARMONIC COM 413160102 47,236 -50,959 -51.90 455 -71.39 0.0003
2023-11-09 2023-09-30 13F HARMONIC COM 413160102 47,236 -50,959 455 0.0003
2023-08-10 2023-06-30 13F HARMONIC COM 413160102 98,195 33,401 51.55 1,588 67.94 0.0010
2023-05-11 2023-03-31 13F HARMONIC COM 413160102 64,794 -8,157 -11.18 945 -1.05 0.0007
2023-02-09 2022-12-31 13F HARMONIC COM 413160102 72,951 -2,047 -2.73 956 -2.55 0.0008
2022-11-10 2022-09-30 13F HARMONIC COM 413160102 74,998 20,356 37.25 980 106.75 0.0007
2022-08-10 2022-06-30 13F HARMONIC COM 413160102 54,642 -43,768 -44.48 474 -48.20 0.0004
2022-05-12 2022-03-31 13F HARMONIC COM 413160102 98,410 8,751 9.76 915 -13.19 0.0006
2022-02-10 2021-12-31 13F HARMONIC COM 413160102 89,659 37,026 70.35 1,054 128.63 0.0006
2021-11-10 2021-09-30 13F HARMONIC COM 413160102 52,633 -3,295 -5.89 461 -3.35 0.0003
2021-08-10 2021-06-30 13F HARMONIC COM 413160102 55,928 44,578 392.76 477 435.96 0.0003
2021-05-13 2021-03-31 13F HARMONIC COM 413160102 11,350 -16,749 -59.61 89 -57.21 0.0001
2021-02-11 2020-12-31 13F HARMONIC COM 413160102 28,099 20,959 293.54 208 420.00 0.0001
2020-11-12 2020-09-30 13F HARMONIC COM 413160102 7,140 -109,046 -93.85 40 -92.75 0.0000
2020-08-12 2020-06-30 13F HARMONIC COM 413160102 116,186 89,011 327.55 552 251.59 0.0004
2020-05-12 2020-03-31 13F HARMONIC COM 413160102 27,175 -15,150 -35.79 157 -52.42 0.0001
2020-02-12 2019-12-31 13F HARMONIC COM 413160102 42,325 -15,481 -26.78 330 -13.16 0.0002
2019-11-08 2019-09-30 13F HARMONIC COM 413160102 57,806 -7,253 -11.15 380 5.26 0.0003
2019-08-12 2019-06-30 13F HARMONIC COM 413160102 65,059 9,356 16.80 361 19.54 0.0003
2019-05-13 2019-03-31 13F HARMONIC COM 413160102 55,703 -996 -1.76 302 13.11 0.0003
2019-02-12 2018-12-31 13F HARMONIC COM 413160102 56,699 -1,950 -3.32 267 -17.34 0.0003
2018-11-13 2018-09-30 13F HARMONIC COM 413160102 58,649 36,325 162.72 323 240.00 0.0003
2018-08-10 2018-06-30 13F HARMONIC COM 413160102 22,324 -7,726 -25.71 95 -17.39 0.0001
2018-05-11 2018-03-31 13F HARMONIC COM 413160102 30,050 721 2.46 115 -6.50 0.0001
2018-02-12 2017-12-31 13F HARMONIC COM 413160102 29,329 -18,306 -38.43 123 -15.75 0.0001
2017-11-13 2017-09-30 13F HARMONIC COM 413160102 47,635 13,019 37.61 146 -19.78 0.0001
2017-08-11 2017-06-30 13F HARMONIC COM 413160102 34,616 -9,025 -20.68 182 -30.00 0.0002
2017-05-12 2017-03-31 13F HARMONIC COM 413160102 43,641 -66,882 -60.51 260 -52.98 0.0002
2017-02-10 2016-12-31 13F HARMONIC COM 413160102 110,523 50,916 85.42 553 56.66 0.0005
2016-11-10 2016-09-30 13F HARMONIC COM 413160102 59,607 21,230 55.32 353 223.85 0.0003
2016-08-12 2016-06-30 13F HARMONIC COM 413160102 38,377 -34,114 -47.06 109 -54.01 0.0001
2016-05-13 2016-03-31 13F HARMONIC COM 413160102 72,491 32,227 80.04 237 44.51 0.0003
2016-02-12 2015-12-31 13F HARMONIC COM 413160102 40,264 7,001 21.05 164 -14.58 0.0002
2015-11-13 2015-09-30 13F HARMONIC COM 413160102 33,263 19,057 134.15 192 97.94 0.0002
2015-08-13 2015-06-30 13F HARMONIC COM 413160102 14,206 -23,767 -62.59 97 -65.48 0.0001
2015-05-14 2015-03-31 13F HARMONIC COM 413160102 37,973 -40,250 -51.46 281 -48.72 0.0003
2015-02-17 2014-12-31 13F HARMONIC COM 413160102 78,223 45,531 139.27 548 164.73 0.0005
2014-11-14 2014-09-30 13F HARMONIC COM 413160102 32,692 15,352 88.54 207 60.47 0.0002
2014-08-14 2014-06-30 13F HARMONIC COM 413160102 17,340 -33,122 -65.64 129 -64.17 0.0001
2014-05-15 2014-03-31 13F HARMONIC COM 413160102 50,462 12,025 31.28 360 27.21 0.0004
2014-02-14 2013-12-31 13F HARMONIC COM 413160102 38,437 17,605 84.51 283 75.78 0.0003
2013-11-14 2013-09-30 13F HARMONIC COM 413160102 20,832 -29,284 -58.43 161 -49.37 0.0002
2013-08-14 2013-06-30 13F HARMONIC COM 413160102 50,116 50,116 318 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.