Marvell Technology, Inc.
US ˙ NasdaqGS ˙ US5738741041

SecurityMRVL / Marvell Technology, Inc.
InstitutionShell Asset Management Co
Latest Disclosed Ownership19,731 shares
Latest Disclosed Value $ 1,659
Shell Asset Management Co reports 58.52% decrease in ownership of MRVL / Marvell Technology, Inc.

On November 7, 2025 - Shell Asset Management Co filed a 13F-HR form disclosing ownership of 19,731 shares of Marvell Technology, Inc. (US:MRVL) valued at $1,658,785 USD as of September 30, 2025. The entity filed a previous 13F-HR on July 23, 2025 disclosing 47,573 shares of Marvell Technology, Inc.. This represents a change in shares of -58.52% during the quarter. The current value of the position is $6,243,480 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)
2025-11-07 2025-09-30 13F MARVELL TECHNOLOGY COM 573874104 19,731 -27,842 -58.52 2 -66.67 0.1666
2025-07-23 2025-06-30 13F MARVELL TECHNOLOGY COM 573874104 47,573 28,936 155.26 4 200.00 0.1271
2025-05-14 2025-03-31 13F MARVELL TECHNOLOGY COM 573874104 18,637 4,170 28.82 1 0.00 0.0545
2025-02-14 2024-12-31 13F MARVELL TECHNOLOGY COM 573874104 14,467 -4,622 -24.21 2 0.00 0.0698
2024-11-07 2024-09-30 13F MARVELL TECHNOLOGY COM 573874104 19,089 -7,582 -28.43 1 0.00 0.0606
2024-07-25 2024-03-31 13F MARVELL TECHNOLOGY COM 573874104 26,671 -8,574 -24.33 2 -50.00 0.0849
2024-02-14 2023-12-31 13F MARVELL TECHNOLOGY COM 573874104 35,245 -4,656 -11.67 2 0.00 0.0982
2023-11-08 2023-09-30 13F MARVELL TECHNOLOGY COM 573874104 39,901 -1,018 -2.49 2 0.00 0.0893
2023-07-28 2023-06-30 13F MARVELL TECHNOLOGY COM 573874104 40,919 -3,593 -8.07 2 100.00 0.0965
2023-05-15 2023-03-31 13F MARVELL TECHNOLOGY COM 573874104 44,512 -176 -0.39 2 0.00 0.0800
2023-02-07 2022-12-31 13F MARVELL TECHNOLOGY COM 573874104 44,688 -581 -1.28 2 -99.95 0.0725
2022-11-14 2022-09-30 13F MARVELL TECHNOLOGY COM 573874104 45,269 -10,679 -19.09 1,942 -20.25 0.0757
2022-08-09 2022-06-30 13F MARVELL TECHNOLOGY COM 573874104 55,948 15,835 39.48 2,435 -15.36 0.0720
2022-05-04 2022-03-31 13F MARVELL TECHNOLOGY COM 573874104 40,113 971 2.48 2,877 -16.00 0.0679
2022-02-09 2021-12-31 13F MARVELL TECHNOLOGY COM 573874104 39,142 8,020 25.77 3,425 82.47 0.0703
2021-11-04 2021-09-30 13F MARVELL TECHNOLOGY COM 573874104 31,122 1,762 6.00 1,877 9.57 0.0421
2021-08-12 2021-06-30 13F MARVELL TECHNOLOGY COM 573874104 29,360 1,214 4.31 1,713 24.22 0.0332
2021-05-10 2021-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 28,146 -13,944 -33.13 1,379 -31.08 0.0276
2021-02-16 2020-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 42,090 13,979 49.73 2,001 79.30 0.0413
2020-11-13 2020-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 28,111 878 3.22 1,116 16.86 0.0259
2020-08-10 2020-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 27,233 -7,489 -21.57 955 21.50 0.0238
2020-05-11 2020-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 34,722 -1,400 -3.88 786 -18.04 0.0219
2020-02-13 2019-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 36,122 3,943 12.25 959 19.28 0.0207
2019-11-12 2019-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 32,179 0 0.00 804 4.69 0.0184
2019-08-12 2019-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 32,179 -5,322 -14.19 768 2.95 0.0170
2019-05-09 2019-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 37,501 0 0.00 746 22.90 0.0164
2019-02-13 2018-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 37,501 -9,377 -20.00 607 -32.93 0.0151
2018-11-13 2018-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 46,878 11,835 33.77 905 20.51 0.0179
2018-08-10 2018-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 35,043 15,447 78.83 751 82.28 0.0154
2018-05-14 2018-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 19,596 0 0.00 412 -2.14 0.0082
2018-02-09 2017-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 19,596 3,877 24.66 421 49.82 0.0084
2017-10-20 2017-09-30 13F/A-1 MARVELL TECHNOLOGY GROUP ORD G5876H105 15,719 -14,674 -48.28 281 -44.02 0.0062
2017-10-18 2017-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 69,437 39,044 936
2017-07-26 2017-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 30,393 0 0.00 502 8.19 0.0125
2017-04-26 2017-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 30,393 -2,659 -8.04 464 1.31 0.0118
2017-01-10 2016-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 33,052 9,424 39.88 458 45.86 0.0124
2016-10-28 2016-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 23,628 -2,013 -7.85 314 28.69 0.0075
2016-07-25 2016-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 25,641 5,127 24.99 244 15.64 0.0057
2016-05-11 2016-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 20,514 -1,460 -6.64 211 8.76 0.0051
2016-02-05 2015-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 21,974 -47,463 -68.35 194 -79.27 0.0046
2015-10-13 2015-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 69,437 39,911 135.17 936 140.62 0.0148
2015-07-30 2015-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 29,526 -13,587 -31.51 389 -38.64 0.0078
2015-05-07 2015-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 43,113 43,113 0.00 634 0.0110
2015-02-04 2014-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 0 -69,437 -100.00 0 -100.00
2014-10-24 2014-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 69,437 0 0.00 936 -5.93 0.0145
2014-08-08 2014-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 69,437 -684 -0.98 995 -9.87 0.0153
2014-05-07 2014-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 70,121 -475 -0.67 1,104 8.77 0.0183
2014-02-03 2013-12-31 13F/A-1 MARVELL TECHNOLOGY GROUP ORD G5876H105 70,596 -54,390 -43.52 1,015 -29.37 0.0173
2014-01-27 2013-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 70,596 1,015
2013-10-28 2013-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 124,986 5,348 4.47 1,437 2.57 0.0264
2013-08-01 2013-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 119,638 119,638 1,401 0.0267
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.