Diodes Incorporated
US ˙ NasdaqGS ˙ US2545431015

SecurityDIOD / Diodes Incorporated
InstitutionState Street Corp
Latest Disclosed Ownership2,282,049 shares
Ownership 5.00%
State Street Corp ownership in DIOD / Diodes Incorporated

2026-05-12 - State Street Corp has filed an SCHEDULE 13G form with the Securities and Exchange Commission (SEC) disclosing ownership of 2,282,049 shares of Diodes Incorporated (US:DIOD). This represents 5.0 percent ownership of the company. In their previous filing dated 2025-11-10 , State Street Corp had reported owning 2,459,595 shares, indicating a decrease of -7.22 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2026-05-12 2026-05-12 13G 2,459,595 2,282,049 -7.22 5.00 -5.66
2025-11-10 2025-11-10 13G 2,459,595 5.30

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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 DIODES COM 254543101 2,282,049 -86,380 -3.65 155,773 33.30 0.0054
2026-02-13 2025-12-31 13F DIODES COM 254543101 2,368,429 -91,062 -3.70 116,858 -10.71 0.0039
2025-11-14 2025-09-30 13F DIODES COM 254543101 2,459,491 171,979 7.52 130,870 8.17 0.0045
2025-08-14 2025-06-30 13F DIODES COM 254543101 2,287,512 -18,354 -0.80 120,987 21.54 0.0045
2025-05-15 2025-03-31 13F DIODES COM 254543101 2,305,866 32,281 1.42 99,544 -29.00 0.0041
2025-02-14 2024-12-31 13F DIODES COM 254543101 2,273,585 112,999 5.23 140,212 1.26 0.0055
2024-11-14 2024-09-30 13F DIODES COM 254543101 2,160,586 -1,597 -0.07 138,472 -10.97 0.0056
2024-08-14 2024-06-30 13F DIODES COM 254543101 2,162,183 -140,113 -6.09 155,526 -4.18 0.0068
2024-05-15 2024-03-31 13F DIODES COM 254543101 2,302,296 84,801 3.82 162,312 -9.10 0.0073
2024-02-14 2023-12-31 13F DIODES COM 254543101 2,217,495 124,095 5.93 178,553 8.19 0.0087
2023-11-14 2023-09-30 13F DIODES COM 254543101 2,093,400 68,350 3.38 165,044 -11.88 0.0092
2023-08-14 2023-06-30 13F DIODES COM 254543101 2,025,050 42,310 2.13 187,297 1.84 0.0098
2023-05-15 2023-03-31 13F DIODES COM 254543101 1,982,740 144,410 7.86 183,919 31.40 0.0104
2023-05-15 2022-12-31 13F/A-99 DIODES COM 254543101 1,838,330 -132,298 -6.71 139,970 9.43 0.0082
2023-05-15 2022-12-31 13F DIODES COM 254543101 1,838,330 -132,298 139,970 0.0082
2022-11-15 2022-09-30 13F DIODES COM 254543101 1,970,628 95,260 5.08 127,913 5.63 0.0081
2022-08-15 2022-06-30 13F DIODES COM 254543101 1,875,368 29,431 1.59 121,093 -24.59 0.0073
2022-05-16 2022-03-31 13F DIODES COM 254543101 1,845,937 52,969 2.95 160,578 -18.44 0.0079
2022-02-14 2021-12-31 13F DIODES COM 254543101 1,792,968 103,622 6.13 196,886 28.65 0.0093
2021-11-15 2021-09-30 13F DIODES COM 254543101 1,689,346 44,150 2.68 153,038 16.61 0.0081
2021-08-16 2021-06-30 13F DIODES COM 254543101 1,645,196 59,384 3.74 131,237 3.65 0.0069
2021-07-09 2021-03-31 13F/A-1 DIODES COM 254543101 1,585,812 -47,601 -2.91 126,611 9.95 0.0073
2021-05-17 2021-03-31 13F DIODES COM 254543101 1,585,812 -47,601 126,611 0.0073
2021-02-16 2020-12-31 13F DIODES COM 254543101 1,633,413 109,851 7.21 115,156 33.89 0.0071
2020-11-10 2020-09-30 13F DIODES COM 254543101 1,523,562 -85,715 -5.33 86,005 5.41 0.0059
2020-08-14 2020-06-30 13F DIODES COM 254543101 1,609,277 112,613 7.52 81,590 34.16 0.0059
2020-06-19 2020-03-31 13F/A-1 DIODES COM 254543101 1,496,664 44,482 3.06 60,817 -25.71 0.0053
2020-05-11 2020-03-31 13F DIODES COM 254543101 1,496,664 44,482 60,817 5,340.9572
2020-02-06 2019-12-31 13F DIODES COM 254543101 1,452,182 -31,351 -2.11 81,859 37.43 0.0056
2019-11-14 2019-09-30 13F DIODES COM 254543101 1,483,533 31,043 2.14 59,564 12.75 0.0044
2019-08-14 2019-06-30 13F DIODES COM 254543101 1,452,490 84,498 6.18 52,827 11.29 0.0039
2019-05-15 2019-03-31 13F DIODES COM 254543101 1,367,992 24,665 1.84 47,469 9.54 0.0037
2019-02-12 2018-12-31 13F DIODES COM 254543101 1,343,327 -48,268 -3.47 43,336 -6.45 0.0039
2018-11-09 2018-09-30 13F DIODES Common equity shares 254543101 1,391,595 138,358 11.04 46,325 7.24 0.0036
2018-08-14 2018-06-30 13F DIODES Common equity shares 254543101 1,253,237 -198 -0.02 43,199 13.15 0.0036
2018-05-15 2018-03-31 13F DIODES Common equity shares 254543101 1,253,435 -14,320 -1.13 38,179 5.03 0.0032
2018-02-14 2017-12-31 13F DIODES Common equity shares 254543101 1,267,755 168,274 15.30 36,350 10.45 0.0029
2017-11-14 2017-09-30 13F DIODES Common equity shares 254543101 1,099,481 76,582 7.49 32,911 33.94 0.0028
2017-08-14 2017-06-30 13F DIODES Common equity shares 254543101 1,022,899 46,506 4.76 24,572 4.66 0.0022
2017-05-15 2017-03-31 13F DIODES Common equity shares 254543101 976,393 87,160 9.80 23,478 2.85 0.0021
2017-02-09 2016-12-31 13F DIODES Common equity shares 254543101 889,233 86,685 10.80 22,827 33.30 0.0021
2017-01-13 2016-09-30 13F/A-1 DIODES Common equity shares 254543101 802,548 16,762 2.13 17,125 15.99 0.0017
2016-11-14 2016-09-30 13F DIODES Common equity shares 254543101 802,548 17,125
2016-08-12 2016-06-30 13F DIODES Common equity shares 254543101 785,786 -5,587 -0.71 14,764 -7.16 0.0016
2016-05-20 2016-03-31 13F/A-1 DIODES Common equity shares 254543101 791,373 -4,600 -0.58 15,902 -13.05 0.0017
2016-05-12 2016-03-31 13F DIODES Common equity shares 254543101 791,373 15,902
2016-02-16 2015-12-31 13F DIODES Common equity shares 254543101 795,973 30,682 4.01 18,288 11.83 0.0020
2015-11-16 2015-09-30 13F DIODES Common equity shares 254543101 765,291 -117,878 -13.35 16,353 -23.18 0.0019
2015-08-13 2015-06-30 13F DIODES Common equity shares 254543101 883,169 61,743 7.52 21,288 -9.25 0.0023
2015-05-15 2015-03-31 13F DIODES Common equity shares 254543101 821,426 -6,973 -0.84 23,457 2.71 0.0024
2015-02-11 2014-12-31 13F DIODES Common equity shares 254543101 828,399 -20,729 -2.44 22,838 12.45 0.0023
2014-11-12 2014-09-30 13F/A-1 DIODES Common equity shares 254543101 849,128 81,359 10.60 20,310 -8.65 0.0022
2014-11-10 2014-09-30 13F DIODES Common equity shares 254543101 849,128 20,310
2014-08-12 2014-06-30 13F DIODES Common equity shares 254543101 767,769 -23,488 -2.97 22,233 7.56 0.0024
2014-05-15 2014-03-31 13F/A-1 DIODES Common equity shares 254543101 791,257 14,861 1.91 20,670 13.02 0.0023
2014-05-13 2014-03-31 13F DIODES Common equity shares 254543101 791,647 20,680
2014-02-06 2013-12-31 13F/A-1 DIODES Common equity shares 254543101 776,396 36,532 4.94 18,289 0.87 0.0020
2014-02-06 2013-12-31 13F DIODES Common equity shares 254543101 730,443 12,665
2013-11-12 2013-09-30 13F DIODES Common equity shares 254543101 739,864 20,901 2.91 18,131 -2.91 0.0022
2013-08-08 2013-06-30 13F DIODES Common equity shares 254543101 718,963 718,963 18,675 0.0024
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.