Marvell 科技公司
MX ˙ BMV ˙ US5738741041
SecurityMX:MRVL1 / Marvell Technology, Inc.
InstitutionTcw Group Inc
Latest Disclosed Ownership476,322 shares
Latest Disclosed Value $ 47,179,695
Tcw Group Inc reports 36.71% decrease in ownership of MRVL1 / Marvell Technology, Inc.

On May 14, 2026 - Tcw Group Inc filed a 13F-HR form disclosing ownership of 476,322 shares of Marvell Technology, Inc. (MX:MRVL1) valued at $47,179,695 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 752,608 shares of Marvell Technology, Inc.. This represents a change in shares of -36.71% 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)
2026-05-14 2026-03-31 13F MARVELL TECHNOLOGY COM 573874104 476,322 -276,286 -36.71 47,180 -26.23 0.1889
2026-02-17 2025-12-31 13F MARVELL TECHNOLOGY COM 573874104 752,608 208,238 38.25 63,957 39.75 0.4581
2025-11-14 2025-09-30 13F MARVELL TECHNOLOGY COM 573874104 544,370 -158,080 -22.50 45,765 -15.83 0.3832
2025-08-14 2025-06-30 13F MARVELL TECHNOLOGY COM 573874104 702,450 118,594 20.31 54,370 51.24 0.4260
2025-05-07 2025-03-31 13F MARVELL TECHNOLOGY COM 573874104 583,856 38,452 7.05 35,948 -40.32 0.3217
2025-02-04 2024-12-31 13F MARVELL TECHNOLOGY COM 573874104 545,404 241,438 79.43 60,240 174.79 0.5058
2024-11-19 2024-09-30 13F/A-1 MARVELL TECHNOLOGY COM 573874104 303,966 53,641 21.43 21,922 25.29 0.1917
2024-11-08 2024-09-30 13F MARVELL TECHNOLOGY COM 573874104 303,966 53,641 21,922 0.0986
2024-07-19 2024-06-30 13F MARVELL TECHNOLOGY COM 573874104 250,325 -16,824 -6.30 17,498 -7.59 0.1564
2024-05-10 2024-03-31 13F MARVELL TECHNOLOGY COM 573874104 267,149 3,080 1.17 18,936 18.80 0.1917
2024-02-09 2023-12-31 13F MARVELL TECHNOLOGY COM 573874104 264,069 16,437 6.64 15,939 18.90 0.1776
2023-11-15 2023-09-30 13F MARVELL TECHNOLOGY COM 573874104 247,632 16,091 6.95 13,404 -3.16 0.1684
2023-08-14 2023-06-30 13F MARVELL TECHNOLOGY COM 573874104 231,541 17,962 8.41 13,842 49.68 0.1535
2023-05-15 2023-03-31 13F MARVELL TECHNOLOGY COM 573874104 213,579 4,992 2.39 9,248 19.69 0.1183
2023-02-14 2022-12-31 13F MARVELL TECHNOLOGY COM 573874104 208,587 -38,703 -15.65 7,726 -27.19 0.1106
2022-10-27 2022-09-30 13F MARVELL TECHNOLOGY COM 573874104 247,290 209,361 551.98 10,611 542.70 0.1552
2022-07-19 2022-06-30 13F MARVELL TECHNOLOGY COM 573874104 37,929 0 0.00 1,651 -39.30 0.0216
2022-04-19 2022-03-31 13F MARVELL TECHNOLOGY COM 573874104 37,929 0 0.00 2,720 -18.05 0.0260
2022-01-26 2021-12-31 13F MARVELL TECHNOLOGY COM 573874104 37,929 0 0.00 3,319 45.06 0.0273
2021-10-26 2021-09-30 13F MARVELL TECHNOLOGY COM 573874104 37,929 0 0.00 2,288 3.39 0.0059
2021-07-23 2021-06-30 13F MARVELL TECHNOLOGY COM 573874104 37,929 37,929 2,213 0.0192
2018-02-09 2017-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 0 -73,799 -100.00 0 -100.00
2017-11-06 2017-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 73,799 -69,052 -48.34 1,321 -44.03 0.0105
2017-08-11 2017-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 142,851 5,277 3.84 2,360 12.43 0.0196
2017-05-11 2017-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 137,574 79,963 138.80 2,099 162.70 0.0175
2017-02-10 2016-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 57,611 57,611 799 0.0060
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.