Marvell Technology, Inc.
IT ˙ BIT ˙ US5738741041
266,30 € ↑0,85 (0,32%)
2026-06-04
DEL PRIS
SecurityIT:19MW / Marvell Technology, Inc.
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership2,524,737 shares
Latest Disclosed Value $ 249,798,460
Janus Henderson Group Plc reports 3.14% decrease in ownership of 19MW / Marvell Technology, Inc.

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 2,524,737 shares of Marvell Technology, Inc. (IT:19MW) valued at $200,666,097 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 2,606,464 shares of Marvell Technology, Inc.. This represents a change in shares of -3.14% during the quarter. The current value of the position is $672,337,463 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)
2026-05-18 2026-03-31 13F/A-1 MARVELL TECHNOLOGY COM 573874104 2,524,737 -81,727 -3.14 249,798 12.98 0.1193
2026-05-15 2026-03-31 13F MARVELL TECHNOLOGY COM 573874104 2,524,737 -81,727 249,798 0.0463
2026-02-17 2025-12-31 13F MARVELL TECHNOLOGY COM 573874104 2,606,464 480,052 22.58 221,098 23.68 0.0990
2025-11-14 2025-09-30 13F MARVELL TECHNOLOGY COM 573874104 2,126,412 -12,081,985 -85.03 178,765 -83.74 0.0816
2025-08-14 2025-06-30 13F MARVELL TECHNOLOGY COM 573874104 14,208,397 1,614,658 12.82 1,099,653 40.75 0.5390
2025-05-15 2025-03-31 13F MARVELL TECHNOLOGY COM 573874104 12,593,739 -645,415 -4.88 781,275 -46.57 0.4282
2025-02-14 2024-12-31 13F MARVELL TECHNOLOGY COM 573874104 13,239,154 857,087 6.92 1,462,274 63.75 0.7432
2024-11-14 2024-09-30 13F MARVELL TECHNOLOGY COM 573874104 12,382,067 -849,425 -6.42 893,012 -3.45 0.4571
2024-08-14 2024-06-30 13F MARVELL TECHNOLOGY COM 573874104 13,231,492 -246,980 -1.83 924,953 -3.19 0.4953
2024-05-15 2024-03-31 13F MARVELL TECHNOLOGY COM 573874104 13,478,472 1,591,874 13.39 955,400 33.27 0.5212
2024-02-14 2023-12-31 13F MARVELL TECHNOLOGY COM 573874104 11,886,598 936,735 8.55 716,871 20.95 0.4276
2023-11-14 2023-09-30 13F MARVELL TECHNOLOGY COM 573874104 10,949,863 -358,108 -3.17 592,694 -12.32 0.3881
2023-08-14 2023-06-30 13F MARVELL TECHNOLOGY COM 573874104 11,307,971 -1,791,473 -13.68 676,009 19.18 0.4204
2023-05-15 2023-03-31 13F MARVELL TECHNOLOGY COM 573874104 13,099,444 4,473,715 51.86 567,197 77.52 0.3740
2023-02-14 2022-12-31 13F MARVELL TECHNOLOGY COM 573874104 8,625,729 -692,596 -7.43 319,515 -20.09 0.2282
2023-01-13 2022-09-30 13F/A-1 MARVELL TECHNOLOGY COM 573874104 9,318,325 -252,122 -2.63 399,838 -4.04 0.2996
2022-11-14 2022-09-30 13F MARVELL TECHNOLOGY COM 573874104 9,318,325 -252,122 399,838 0.2993
2022-08-15 2022-06-30 13F MARVELL TECHNOLOGY COM 573874104 9,570,447 -1,302,631 -11.98 416,650 -46.55 0.2873
2022-05-16 2022-03-31 13F MARVELL TECHNOLOGY COM 573874104 10,873,078 1,351,600 14.20 779,548 -6.43 0.3764
2022-02-14 2021-12-31 13F MARVELL TECHNOLOGY COM 573874104 9,521,478 903,234 10.48 833,152 60.31 0.3475
2021-11-16 2021-09-30 13F MARVELL TECHNOLOGY COM 573874104 8,618,244 -361,342 -4.02 519,726 -0.77 0.2273
2021-08-16 2021-06-30 13F MARVELL TECHNOLOGY COM 573874104 8,979,586 2,748,073 44.10 523,766 71.59 0.2242
2021-05-17 2021-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 6,231,513 2,575,236 70.43 305,248 75.61 0.1394
2021-02-16 2020-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 3,656,277 -2,517,680 -40.78 173,819 -29.07 0.0808
2020-11-16 2020-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 6,173,957 -164,132 -2.59 245,067 10.29 0.1278
2020-08-14 2020-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 6,338,089 -1,406,022 -18.16 222,198 26.47 0.1247
2020-05-14 2020-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 7,744,111 -718,462 -8.49 175,695 -21.83 0.1209
2020-02-18 2019-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 8,462,573 3,330,794 64.91 224,748 75.37 0.1151
2019-11-14 2019-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 5,131,779 2,224,927 76.54 128,156 84.59 0.0694
2019-07-31 2019-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 2,906,852 -316,638 -9.82 69,427 8.31 0.0378
2019-04-30 2019-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 3,223,490 3,073,748 2,052.70 64,099 2,544.35 0.0355
2019-02-06 2018-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 149,742 -54,394 -26.65 2,424 -38.46 0.0015
2018-11-09 2018-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 204,136 -361,814 -63.93 3,939 -67.54 0.0021
2018-08-10 2018-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 565,950 339,090 149.47 12,134 154.70 0.0069
2018-05-14 2018-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 226,860 12,600 5.88 4,764 3.54 0.0028
2018-03-12 2017-12-31 13F/A-1 MARVELL TECHNOLOGY GROUP ORD G5876H105 214,260 -133,900 -38.46 4,601 -26.17 0.0028
2018-02-09 2017-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 214,260 -133,900 4,601
2017-11-14 2017-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 348,160 -492,014 -58.56 6,232 -55.10 0.0040
2017-08-17 2017-06-30 13F/A-1 MARVELL TECHNOLOGY GROUP ORD G5876H105 840,174 777,635 1,243.44 13,879 1,353.30 0.0095
2017-08-14 2017-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 840,174 777,635 13,879
2017-05-03 2017-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 62,539 0 0.00 955 10.02 0.0067
2017-01-30 2016-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 62,539 5,900 10.42 868 15.58 0.0064
2016-10-24 2016-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 56,639 0 0.00 751 39.33 0.0055
2016-07-29 2016-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 56,639 0 0.00 539 -7.71 0.0045
2016-05-12 2016-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 56,639 0 0.00 584 17.03 0.0047
2016-02-03 2015-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 56,639 0 0.00 499 -2.54 0.0040
2015-11-16 2015-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 56,639 0 0.00 512 -31.46 0.0045
2015-08-17 2015-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 56,639 0 0.00 747 -10.32 0.0059
2015-06-02 2015-03-31 13F/A-1 MARVELL TECHNOLOGY GROUP ORD G5876H105 56,639 0 0.00 833 1.34 0.0064
2015-05-15 2015-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 56,639 833
2015-02-12 2014-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 56,639 0 0.00 822 7.59 0.0059
2014-11-12 2014-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 56,639 0 0.00 764 -5.80 0.0072
2014-08-13 2014-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 56,639 0 0.00 811 -9.08 0.0076
2014-05-08 2014-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 56,639 14,654 34.90 892 47.68 0.0087
2014-01-14 2013-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 41,985 0 0.00 604 25.05 0.0061
2013-11-12 2013-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 41,985 -22,021 -34.40 483 -35.77 0.0053
2013-08-15 2013-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 64,006 64,006 752 0.0088
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.