Marvell Technology, Inc.
MX ˙ BMV ˙ US5738741041
SecurityMX:MRVL1 / Marvell Technology, Inc.
InstitutionWestpac Banking Corp
Latest Disclosed Ownership6,527 shares
Latest Disclosed Value $ 646,499
Westpac Banking Corp reports 11.47% decrease in ownership of MRVL1 / Marvell Technology, Inc.

On May 11, 2026 - Westpac Banking Corp filed a 13F-HR form disclosing ownership of 6,527 shares of Marvell Technology, Inc. (MX:MRVL1) valued at $646,499 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 7,373 shares of Marvell Technology, Inc.. This represents a change in shares of -11.47% 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)
2026-05-11 2026-03-31 13F MARVELL TECHNOLOGY COM 573874104 6,527 -846 -11.47 646 3.19 0.0225
2026-02-10 2025-12-31 13F MARVELL TECHNOLOGY COM 573874104 7,373 0 0.00 627 1.13 0.0396
2025-11-14 2025-09-30 13F/A-1 MARVELL TECHNOLOGY INC USD 0.002 COM 573874104 7,373 -1,496 -16.87 620 -9.77 0.0384
2025-11-12 2025-09-30 13F MARVELL TECHNOLOGY INC USD 0.002 COM 573874104 7,373 -1,496 620 0.0156
2025-08-11 2025-06-30 13F MARVELL TECHNOLOGY COM 573874104 8,869 -13,079 -59.59 686 -49.22 0.0459
2025-05-13 2025-03-31 13F MARVELL TECHNOLOGY COM 573874104 21,948 11,488 109.83 1,351 16.97 0.0994
2025-02-12 2024-12-31 13F MARVELL TECHNOLOGY COM 573874104 10,460 -1,213 -10.39 1,155 37.34 0.0767
2024-11-08 2024-09-30 13F MARVELL TECHNOLOGY COM 573874104 11,673 3,482 42.51 842 47.03 0.0564
2024-08-14 2024-06-30 13F/A-1 MARVELL TECHNOLOGY COM 573874104 8,191 -755 -8.44 573 -9.78 0.0454
2024-08-13 2024-06-30 13F MARVELL TECHNOLOGY COM 573874104 70 -8,876 573 0.0197
2024-05-09 2024-03-31 13F MARVELL TECHNOLOGY COM 573874104 8,946 69 0.78 634 18.50 0.0483
2024-02-08 2023-12-31 13F MARVELL TECHNOLOGY COM 573874104 8,877 260 3.02 535 14.81 0.0441
2023-11-13 2023-09-30 13F MARVELL TECHNOLOGY COM 573874104 8,617 -21,073 -70.98 466 -73.73 0.0349
2023-08-10 2023-06-30 13F MARVELL TECHNOLOGY COM 573874104 29,690 -197,826 -86.95 1,775 -81.99 0.1252
2023-05-04 2023-03-31 13F MARVELL TECHNOLOGY COM 573874104 227,516 144,485 174.01 9,851 220.36 0.1324
2023-02-06 2022-12-31 13F MARVELL TECHNOLOGY COM 573874104 83,031 6,504 8.50 3,075 -6.34 0.0455
2022-11-08 2022-09-30 13F MARVELL TECHNOLOGY COM 573874104 76,527 8,718 12.86 3,284 11.25 0.0501
2022-08-10 2022-06-30 13F MARVELL TECHNOLOGY COM 573874104 67,809 67,809 2,952 0.0385
2022-05-10 2022-03-31 13F MARVELL TECHNOLOGY COM 573874104 0 -113,899 -100.00 0 -100.00
2022-02-08 2021-12-31 13F MARVELL TECHNOLOGY COM 573874104 113,899 -33,396 -22.67 9,965 12.18 0.1032
2021-10-27 2021-09-30 13F MARVELL TECHNOLOGY COM 573874104 147,295 -399 -0.27 8,883 3.12 0.0950
2021-08-11 2021-06-30 13F MARVELL TECHNOLOGY COM 573874104 147,694 147,694 8,615 0.0865
2021-05-13 2021-03-31 13F RAYTHEON TECHNOLOGIES COM G5876H105 0 -127,843 -100.00 0 -100.00
2021-02-11 2020-12-31 13F RAYTHEON TECHNOLOGIES COM G5876H105 127,843 1,228 0.97 6,078 20.91 0.0690
2020-11-10 2020-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 126,615 -7,773 -5.78 5,027 6.69 0.0681
2020-08-12 2020-06-30 13F MARVELL TECHNOLOGY GROUP COM G5876H105 134,388 82,543 159.21 4,712 301.62 0.0702
2020-05-14 2020-03-31 13F MARVELL TECHNOLOGY GROUP COM G5876H105 51,845 -110,558 -68.08 1,173 -72.80 0.0202
2020-02-11 2019-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 162,403 4,962 3.15 4,313 9.72 0.0555
2019-11-13 2019-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 157,441 157,441 -3.06 3,931 -8.86 0.0547
2019-05-13 2019-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 0 -275,908 -100.00 0 -100.00
2019-02-07 2018-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 275,908 275,908 4,467 0.0761
2018-01-18 2017-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 0 -26,208 -100.00 0 -100.00
2017-10-30 2017-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 26,208 -34,832 -57.06 469 -53.47 0.0103
2017-08-09 2017-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 61,040 -853,332 -93.32 1,008 -92.78 0.0222
2017-05-18 2017-03-31 13F/A-1 MARVELL TECHNOLOGY GROUP ORD G5876H105 914,372 317,703 53.25 13,953 22.08 0.1118
2017-05-11 2017-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 494,441 7,545
2017-02-09 2016-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 596,669 -174,289 -22.61 11,429 47.02 0.1078
2016-11-10 2016-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 770,958 -556,988 -41.94 7,774 -15.37 0.0840
2016-08-10 2016-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 1,327,946 491,402 58.74 9,186 6.52 0.1006
2016-05-13 2016-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 836,544 -304,111 -26.66 8,625 -14.27 0.0938
2016-02-11 2015-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 1,140,655 227,746 24.95 10,061 21.72 0.1113
2015-11-16 2015-09-30 13F/A-1 MARVELL TECHNOLOGY GROUP ORD G5876H105 912,909 -395,591 -30.23 8,265 -52.09 0.0910
2015-11-12 2015-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 912,909 8,265
2015-08-12 2015-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 1,308,500 -4,103 -0.31 17,253 -24.95 0.1687
2015-05-12 2015-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 1,312,603 -302,700 -18.74 22,988 -1.85 0.1997
2015-02-11 2014-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 1,615,303 -34 -0.00 23,422 7.56 0.2228
2014-11-12 2014-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 1,615,337 204,561 14.50 21,775 7.71 0.2122
2014-08-11 2014-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 1,410,776 591,536 72.21 20,216 56.68 0.1948
2014-05-12 2014-03-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 819,240 -597,433 -42.17 12,903 -36.64 0.1374
2014-02-13 2013-12-31 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 1,416,673 -6,300 -0.44 20,365 24.51 0.2330
2013-11-12 2013-09-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 1,422,973 92,536 6.96 16,355 9.32 0.2045
2013-08-14 2013-06-30 13F MARVELL TECHNOLOGY GROUP ORD G5876H105 1,330,437 1,330,437 14,960 0.2287
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.