벨 퓨즈 주식회사

SecurityBELFB / Bel Fuse Inc.
InstitutionState Street Corp
Latest Disclosed Ownership242,454 shares
Latest Disclosed Value $ 48,001,043
State Street Corp reports 1.82% decrease in ownership of BELFB / Bel Fuse Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 242,454 shares of Bel Fuse Inc. (US:BELFB) valued at $48,001,043 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 246,959 shares of Bel Fuse Inc.. This represents a change in shares of -1.82% during the quarter. The current value of the position is $67,048,229 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)
2026-05-15 2026-03-31 13F BEL FUSE CL B 077347300 242,454 -4,505 -1.82 48,001 14.59 0.0017
2026-02-13 2025-12-31 13F BEL FUSE CL B 077347300 246,959 5,832 2.42 41,892 23.20 0.0014
2025-11-14 2025-09-30 13F BEL FUSE CL B 077347300 241,127 1,555 0.65 34,004 45.29 0.0012
2025-08-14 2025-06-30 13F BEL FUSE CL B 077347300 239,572 6,379 2.74 23,404 34.07 0.0009
2025-05-15 2025-03-31 13F BEL FUSE CL B 077347300 233,193 838 0.36 17,457 -8.90 0.0007
2025-02-14 2024-12-31 13F BEL FUSE CL B 077347300 232,355 6,200 2.74 19,162 7.92 0.0008
2024-11-14 2024-09-30 13F BEL FUSE CL B 077347300 226,155 -2,332 -1.02 17,755 19.11 0.0007
2024-08-14 2024-06-30 13F BEL FUSE CL B 077347300 228,487 11,763 5.43 14,906 14.05 0.0007
2024-05-15 2024-03-31 13F BEL FUSE CL B 077347300 216,724 1,257 0.58 13,071 -9.15 0.0006
2024-02-14 2023-12-31 13F BEL FUSE CL B 077347300 215,467 17,731 8.97 14,387 52.47 0.0007
2023-11-14 2023-09-30 13F BEL FUSE CL B 077347300 197,736 10,491 5.60 9,436 -12.22 0.0005
2023-08-14 2023-06-30 13F BEL FUSE CL B 077347300 187,245 143,349 326.57 10,750 551.85 0.0006
2023-05-15 2023-03-31 13F BEL FUSE CL B 077347300 43,896 2,000 4.77 1,650 19.58 0.0001
2023-05-15 2022-12-31 13F/A-99 BEL FUSE CL B 077347300 41,896 4,000 10.56 1,379 44.10 0.0001
2023-05-15 2022-12-31 13F BEL FUSE CL B 077347300 41,896 4,000 1,379 0.0001
2022-11-15 2022-09-30 13F BEL FUSE CL B 077347300 37,896 -4,600 -10.82 957 44.78 0.0001
2022-08-15 2022-06-30 13F BEL FUSE CL B 077347300 42,496 0 0.00 661 -12.80 0.0000
2022-05-16 2022-03-31 13F BEL FUSE CL B 077347300 42,496 2,120 5.25 758 45.21 0.0000
2022-02-14 2021-12-31 13F BEL FUSE CL B 077347300 40,376 12,600 45.36 522 51.30 0.0000
2021-11-15 2021-09-30 13F BEL FUSE CL B 077347300 27,776 -152,942 -84.63 345 -86.74 0.0000
2021-08-16 2021-06-30 13F BEL FUSE CL B 077347300 180,718 -133,993 -42.58 2,602 -58.43 0.0001
2021-07-09 2021-03-31 13F/A-1 BEL FUSE CL B 077347300 314,711 6,481 2.10 6,260 35.12 0.0004
2021-05-17 2021-03-31 13F BEL FUSE CL B 077347300 314,711 6,481 6,260 0.0004
2021-02-16 2020-12-31 13F BEL FUSE CL B 077347300 308,230 -15,029 -4.65 4,633 34.21 0.0003
2020-11-10 2020-09-30 13F BEL FUSE CL B 077347300 323,259 -804 -0.25 3,452 -0.72 0.0002
2020-08-14 2020-06-30 13F BEL FUSE CL B 077347300 324,063 4,518 1.41 3,477 11.73 0.0003
2020-06-19 2020-03-31 13F/A-1 BEL FUSE CL B 077347300 319,545 37,810 13.42 3,112 -46.12 0.0003
2020-05-11 2020-03-31 13F BEL FUSE CL B 077347300 319,545 37,810 3,112 273.2963
2020-02-06 2019-12-31 13F BEL FUSE CL B 077347300 281,735 10,380 3.83 5,776 41.64 0.0004
2019-11-14 2019-09-30 13F BEL FUSE CL B 077347300 271,355 -2,578 -0.94 4,078 -13.29 0.0003
2019-08-14 2019-06-30 13F BEL FUSE CL B 077347300 273,933 3,699 1.37 4,703 -31.16 0.0004
2019-05-15 2019-03-31 13F BEL FUSE CL B 077347300 270,234 -2,578 -0.94 6,832 35.96 0.0005
2019-02-12 2018-12-31 13F BEL FUSE CL B 077347300 272,812 17,805 6.98 5,025 -25.65 0.0005
2018-11-09 2018-09-30 13F BEL FUSE Common equity shares 077347300 255,007 19,514 8.29 6,759 37.43 0.0005
2018-08-14 2018-06-30 13F BEL FUSE Common equity shares 077347300 235,493 -11,166 -4.53 4,918 5.45 0.0004
2018-05-15 2018-03-31 13F BEL FUSE Common equity shares 077347300 246,659 -64,576 -20.75 4,664 -40.50 0.0004
2018-02-14 2017-12-31 13F BEL FUSE Common equity shares 077347300 311,235 14,177 4.77 7,838 -15.44 0.0006
2017-11-14 2017-09-30 13F BEL FUSE Common equity shares 077347300 297,058 2,521 0.86 9,269 27.36 0.0008
2017-08-14 2017-06-30 13F BEL FUSE Common equity shares 077347300 294,537 17,083 6.16 7,278 2.65 0.0006
2017-05-15 2017-03-31 13F BEL FUSE Common equity shares 077347300 277,454 62,473 29.06 7,090 6.78 0.0006
2017-02-09 2016-12-31 13F BEL FUSE Common equity shares 077347300 214,981 11,858 5.84 6,640 35.54 0.0006
2017-01-13 2016-09-30 13F/A-1 BEL FUSE Common equity shares 077347300 203,123 5,243 2.65 4,899 39.29 0.0005
2016-11-14 2016-09-30 13F BEL FUSE Common equity shares 077347300 203,123 4,899
2016-08-12 2016-06-30 13F BEL FUSE Common equity shares 077347300 197,880 429 0.22 3,517 22.08 0.0004
2016-05-20 2016-03-31 13F/A-1 BEL FUSE Common equity shares 077347300 197,451 -2,996 -1.49 2,881 -16.85 0.0003
2016-05-12 2016-03-31 13F BEL FUSE Common equity shares 077347300 197,451 2,881
2016-02-16 2015-12-31 13F BEL FUSE Common equity shares 077347300 200,447 272 0.14 3,465 -10.86 0.0004
2015-11-16 2015-09-30 13F BEL FUSE Common equity shares 077347300 200,175 -9,102 -4.35 3,887 -9.39 0.0005
2015-08-13 2015-06-30 13F BEL FUSE Common equity shares 077347300 209,277 11,334 5.73 4,290 13.94 0.0005
2015-05-15 2015-03-31 13F BEL FUSE Common equity shares 077347300 197,943 6,888 3.61 3,765 -27.90 0.0004
2015-02-11 2014-12-31 13F BEL FUSE Common equity shares 077347300 191,055 2,618 1.39 5,222 12.01 0.0005
2014-11-12 2014-09-30 13F/A-1 BEL FUSE Common equity shares 077347300 188,437 -3,479 -1.81 4,662 -5.36 0.0005
2014-11-10 2014-09-30 13F BEL FUSE Common equity shares 077347300 188,437 4,662
2014-08-12 2014-06-30 13F BEL FUSE Common equity shares 077347300 191,916 -16,763 -8.03 4,926 7.84 0.0005
2014-05-15 2014-03-31 13F/A-1 BEL FUSE Common equity shares 077347300 208,679 9,018 4.52 4,568 7.36 0.0005
2014-05-13 2014-03-31 13F BEL FUSE Common equity shares 077347300 208,679 4,568
2014-02-06 2013-12-31 13F/A-1 BEL FUSE Common equity shares 077347300 199,661 -6,173 -3.00 4,255 18.52 0.0005
2014-02-06 2013-12-31 13F BEL FUSE Common equity shares 077347300 218,280 4,266
2013-11-12 2013-09-30 13F BEL FUSE Common equity shares 077347300 205,834 -1,091 -0.53 3,590 29.14 0.0004
2013-08-08 2013-06-30 13F BEL FUSE Common equity shares 077347300 206,925 206,925 2,780 0.0004
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.