마벨 테크놀로지, Inc.
MX ˙ BMV ˙ US5738741041
SecurityMX:MRVL1 / Marvell Technology, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership470,629 shares
Latest Disclosed Value $ 39,987,860
Sei Investments Co reports 13.95% decrease in ownership of MRVL1 / Marvell Technology, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 470,629 shares of Marvell Technology, Inc. (MX:MRVL1) valued at $39,987,860 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 546,919 shares of Marvell Technology, Inc.. This represents a change in shares of -13.95% during the quarter.

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)
2026-02-13 2025-12-31 13F MARVELL TECHNOLOGY COM 573874104 470,629 -76,290 -13.95 39,988 -13.03
2025-11-13 2025-09-30 13F MARVELL TECHNOLOGY COM 573874104 546,919 -122,444 -18.29 45,980 -11.25 0.0494
2025-08-14 2025-06-30 13F MARVELL TECHNOLOGY COM 573874104 669,363 -691,096 -50.80 51,807 -38.15 0.0601
2025-05-14 2025-03-31 13F/A-1 MARVELL TECHNOLOGY COM 573874104 1,360,459 283,233 26.29 83,764 -29.60 0.1078
2025-05-13 2025-03-31 13F MARVELL TECHNOLOGY COM 573874104 1,076,553 -673 115,354 0.1255
2025-02-11 2024-12-31 13F MARVELL TECHNOLOGY COM 573874104 1,077,226 421,349 64.24 118,977 151.53 0.1528
2024-11-12 2024-09-30 13F MARVELL TECHNOLOGY COM 573874104 655,877 -46,835 -6.66 47,302 -3.71 0.0614
2024-08-13 2024-06-30 13F MARVELL TECHNOLOGY COM 573874104 702,712 159,796 29.43 49,126 27.66 0.0696
2024-05-07 2024-03-31 13F MARVELL TECHNOLOGY COM 573874104 542,916 21,128 4.05 38,482 22.29 0.0564
2024-02-14 2023-12-31 13F MARVELL TECHNOLOGY COM 573874104 521,788 -29,512 -5.35 31,470 5.46 0.0505
2023-11-14 2023-09-30 13F MARVELL TECHNOLOGY COM 573874104 551,300 -38,281 -6.49 29,841 -15.33 0.0536
2023-08-11 2023-06-30 13F MARVELL TECHNOLOGY COM 573874104 589,581 -220,025 -27.18 35,246 0.54 0.0615
2023-05-12 2023-03-31 13F MARVELL TECHNOLOGY COM 573874104 809,606 -7,500 -0.92 35,057 15.83 0.0651
2023-02-10 2022-12-31 13F MARVELL TECHNOLOGY COM 573874104 817,106 145,727 21.71 30,266 5.06 0.0673
2022-11-14 2022-09-30 13F MARVELL TECHNOLOGY COM 573874104 671,379 54,077 8.76 28,808 7.54 0.0643
2022-08-15 2022-06-30 13F MARVELL TECHNOLOGY COM 573874104 617,302 19,593 3.28 26,788 -37.63 0.0578
2022-05-13 2022-03-31 13F MARVELL TECHNOLOGY COM 573874104 597,709 -27,996 -4.47 42,947 -21.72 0.0863
2022-02-14 2021-12-31 13F MARVELL TECHNOLOGY COM 573874104 625,705 -32,861 -4.99 54,861 38.24 0.1029
2021-11-12 2021-09-30 13F MARVELL TECHNOLOGY COM 573874104 658,566 395,893 150.72 39,686 159.42 0.0833
2021-08-06 2021-06-30 13F MARVELL TECHNOLOGY COM 573874104 262,673 154,730 143.34 15,298 189.19 0.0339
2021-05-12 2021-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 107,943 -9,054 -7.74 5,290 -6.52 0.0133
2021-02-08 2020-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 116,997 59,928 105.01 5,659 152.07 0.0146
2020-12-04 2020-09-30 13F/A-1 MARVELL TECHNOLOGY GROUP ORD G5876H105 57,069 4,144 7.83 2,245 23.96 0.0065
2020-11-06 2020-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 66,505 13,580 2,620 6,308.3775
2020-08-17 2020-06-30 13F/A-1 MARVELL TECHNOLOGY GROUP ORD G5876H105 52,925 -56,024 -51.42 1,811 -26.44 0.0056
2020-08-11 2020-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 223,791 114,842 6,100 16,546.5747
2020-05-14 2020-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 108,949 -101,354 -48.19 2,462 -55.98 0.0090
2020-02-06 2019-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 210,303 -28,390 -11.89 5,593 -6.36 0.0167
2019-11-12 2019-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 238,693 -24,935 -9.46 5,973 -5.22 0.0153
2019-08-14 2019-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 263,628 -171 -0.06 6,302 19.83 0.0206
2019-05-15 2019-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 263,799 67,238 34.21 5,259 39.13 0.0177
2019-02-13 2018-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 196,561 3,249 1.68 3,780 1.31 0.0135
2018-11-08 2018-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 193,312 -77,475 -28.61 3,731 -35.74 0.0135
2018-08-03 2018-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 270,787 -130,944 -32.59 5,806 -31.18 0.0197
2018-05-11 2018-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 401,731 55,055 15.88 8,437 13.34 0.0323
2018-02-08 2017-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 346,676 70,289 25.43 7,444 50.48 0.0258
2017-11-06 2017-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 276,387 -8,292 -2.91 4,947 5.19 0.0176
2017-07-31 2017-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 284,679 -45,408 -13.76 4,703 -6.63 0.0187
2017-05-05 2017-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 330,087 -58,161 -14.98 5,037 -6.46 0.0221
2017-02-02 2016-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 388,248 -80,177 -17.12 5,385 -13.35 0.0261
2016-11-04 2016-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 468,425 86,451 22.63 6,215 70.74 0.0316
2016-08-11 2016-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 381,974 74,817 24.36 3,640 14.94 0.0218
2016-05-10 2016-03-31 13F/A-1 MARVELL TECHNOLOGY GROUP ORD G5876H105 307,157 306,189 31,631.10 3,167 35,088.89 0.0197
2016-02-03 2015-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 968 107 12.43 9 28.57 0.0001
2015-11-02 2015-09-30 13F/A-1 MARVELL TECHNOLOGY GROUP ORD G5876H105 861 -25,821 -96.77 7 -98.01 0.0001
2015-10-30 2015-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 861 9
2015-08-07 2015-06-30 13F/A-1 MARVELL TECHNOLOGY GROUP ORD G5876H105 26,682 -114 -0.43 352 -10.43 0.0032
2015-08-04 2015-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 26,682 -114 352 0.0032
2015-05-14 2015-03-31 13F/A-1 MARVELL TECHNOLOGY GROUP ORD G5876H105 26,796 25,661 2,260.88 393 2,356.25 0.0034
2015-05-01 2015-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 26,796 393
2015-02-10 2014-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 1,135 1,135 16 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.