Diodes Incorporated
US ˙ NasdaqGS ˙ US2545431015

SecurityDIOD / Diodes Incorporated
InstitutionSei Investments Co
Latest Disclosed Ownership32,998 shares
Latest Disclosed Value $ 1,628,097
Sei Investments Co reports 50.37% decrease in ownership of DIOD / Diodes Incorporated

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 32,998 shares of Diodes Incorporated (US:DIOD) valued at $1,628,121 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 66,487 shares of Diodes Incorporated. This represents a change in shares of -50.37% during the quarter. The current value of the position is $3,835,028 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)
2026-02-13 2025-12-31 13F DIODES COM 254543101 32,998 -33,489 -50.37 1,628 -53.99 0.0016
2025-11-13 2025-09-30 13F DIODES COM 254543101 66,487 -10,869 -14.05 3,538 -13.52 0.0038
2025-08-14 2025-06-30 13F DIODES COM 254543101 77,356 45,117 139.95 4,091 194.10 0.0047
2025-05-14 2025-03-31 13F/A-1 DIODES COM 254543101 32,239 -576,296 -94.70 1,392 -96.29 0.0018
2025-05-13 2025-03-31 13F DIODES COM 254543101 608,762 227 37,503 0.0408
2025-02-11 2024-12-31 13F DIODES COM 254543101 608,535 44,387 7.87 37,528 3.79 0.0482
2024-11-12 2024-09-30 13F DIODES COM 254543101 564,148 -219,300 -27.99 36,156 -35.84 0.0470
2024-08-13 2024-06-30 13F DIODES COM 254543101 783,448 42,192 5.69 56,353 7.84 0.0798
2024-05-07 2024-03-31 13F DIODES COM 254543101 741,256 16,859 2.33 52,258 -10.41 0.0766
2024-02-14 2023-12-31 13F DIODES COM 254543101 724,397 137,676 23.47 58,328 26.10 0.0936
2023-11-14 2023-09-30 13F DIODES COM 254543101 586,721 57,817 10.93 46,257 -5.44 0.0831
2023-08-11 2023-06-30 13F DIODES COM 254543101 528,904 -139,407 -20.86 48,918 -21.09 0.0853
2023-05-12 2023-03-31 13F DIODES COM 254543101 668,311 106,887 19.04 61,992 45.02 0.1152
2023-02-10 2022-12-31 13F DIODES COM 254543101 561,424 -58,733 -9.47 42,747 6.19 0.0950
2022-11-14 2022-09-30 13F DIODES COM 254543101 620,157 30,202 5.12 40,254 5.72 0.0898
2022-08-15 2022-06-30 13F DIODES COM 254543101 589,955 199,775 51.20 38,075 12.07 0.0822
2022-05-13 2022-03-31 13F DIODES COM 254543101 390,180 30,650 8.53 33,975 -14.03 0.0683
2022-02-14 2021-12-31 13F DIODES COM 254543101 359,530 -266 -0.07 39,519 21.25 0.0741
2021-11-12 2021-09-30 13F DIODES COM 254543101 359,796 338,276 1,571.91 32,594 1,798.31 0.0684
2021-08-06 2021-06-30 13F DIODES COM 254543101 21,520 4,002 22.85 1,717 22.64 0.0038
2021-05-12 2021-03-31 13F DIODES COM 254543101 17,518 -1,365 -7.23 1,400 5.03 0.0035
2021-02-08 2020-12-31 13F DIODES COM 254543101 18,883 -12,929 -40.64 1,333 -25.86 0.0034
2020-12-04 2020-09-30 13F/A-1 DIODES COM 254543101 31,812 3,679 13.08 1,798 26.00 0.0052
2020-11-06 2020-09-30 13F DIODES COM 254543101 31,812 3,679 1,798 4,329.1842
2020-08-17 2020-06-30 13F/A-1 DIODES COM 254543101 28,133 -4,162 -12.89 1,427 8.85 0.0044
2020-08-11 2020-06-30 13F DIODES COM 254543101 40,722 8,427 2,296 6,228.0222
2020-05-14 2020-03-31 13F DIODES COM 254543101 32,295 -8,331 -20.51 1,311 -42.75 0.0048
2020-02-06 2019-12-31 13F DIODES COM 254543101 40,626 -11,139 -21.52 2,290 10.20 0.0068
2019-11-12 2019-09-30 13F DIODES COM 254543101 51,765 -9,327 -15.27 2,078 -6.48 0.0053
2019-08-14 2019-06-30 13F DIODES COM 254543101 61,092 15,757 34.76 2,222 41.26 0.0073
2019-05-15 2019-03-31 13F DIODES COM 254543101 45,335 40,681 874.11 1,573 948.67 0.0053
2019-02-13 2018-12-31 13F DIODES COM 254543101 4,654 4,654 150 0.0005
2017-11-06 2017-09-30 13F DIODES COM 254543101 0 -4 -100.00 0 0.0000
2017-07-31 2017-06-30 13F DIODES COM 254543101 4 3 300.00 0 0.0000
2017-05-05 2017-03-31 13F DIODES COM 254543101 1 -1 -50.00 0 0.0000
2017-02-02 2016-12-31 13F DIODES COM 254543101 2 -1 -33.33 0 0.0000
2016-11-04 2016-09-30 13F DIODES COM 254543101 3 -2 -40.00 0 0.0000
2016-08-11 2016-06-30 13F DIODES COM 254543101 5 5 0.00 0 0.0000
2016-05-10 2016-03-31 13F/A-1 DIODES COM 254543101 0 0 0 0.0000
2016-02-03 2015-12-31 13F DIODES COM 254543101 0 -1 -100.00 0 -100.00 0.0000
2015-11-02 2015-09-30 13F/A-1 DIODES COM 254543101 1 1 0 0.0000
2015-10-30 2015-09-30 13F DIODES COM 254543101 1 1
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.