ASE Technology Holding Co., Ltd. - Depositary Receipt (Common Stock)
US ˙ NYSE ˙ US00215W1009

SecurityASX / ASE Technology Holding Co., Ltd. - Depositary Receipt (Common Stock)
InstitutionSei Investments Co
Latest Disclosed Ownership724,330 shares
Latest Disclosed Value $ 11,661,629
Sei Investments Co reports 11.75% increase in ownership of ASX / ASE Technology Holding Co., Ltd. - Depositary Receipt (Common Stock)

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 724,330 shares of ASE Technology Holding Co., Ltd. - Depositary Receipt (Common Stock) (US:ASX) valued at $11,661,713 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 648,190 shares of ASE Technology Holding Co., Ltd. - Depositary Receipt (Common Stock). This represents a change in shares of 11.75% during the quarter. The current value of the position is $27,814,272 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 ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 724,330 76,140 11.75 11,662 62.23 0.0115
2025-11-13 2025-09-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 648,190 147,166 29.37 7,188 38.90 0.0077
2025-08-14 2025-06-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 501,024 7,607 1.54 5,176 19.74 0.0060
2025-05-14 2025-03-31 13F/A-1 ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 493,417 7,247 1.49 4,322 -11.72 0.0056
2025-05-13 2025-03-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 494,309 8,139 4,338 0.0047
2025-02-11 2024-12-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 486,170 1,629 0.34 4,896 3.53 0.0063
2024-11-12 2024-09-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 484,541 -23,473 -4.62 4,729 -18.48 0.0061
2024-08-13 2024-06-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 508,014 -10,585 -2.04 5,802 1.79 0.0082
2024-05-07 2024-03-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 518,599 -1,390,137 -72.83 5,700 -68.27 0.0084
2024-02-14 2023-12-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 1,908,736 -681,978 -26.32 17,961 -7.81 0.0288
2023-11-14 2023-09-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 2,590,714 -71,424 -2.68 19,482 -6.06 0.0350
2023-08-11 2023-06-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 2,662,138 -23,377 -0.87 20,738 -3.11 0.0362
2023-05-12 2023-03-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 2,685,515 -121,248 -4.32 21,404 21.62 0.0398
2023-02-10 2022-12-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 2,806,763 103,834 3.84 17,598 30.48 0.0391
2022-11-14 2022-09-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 2,702,929 -34,163 -1.25 13,487 -4.69 0.0301
2022-08-15 2022-06-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 2,737,092 -92,323 -3.26 14,150 -29.49 0.0306
2022-05-13 2022-03-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 2,829,415 29,374 1.05 20,069 -8.20 0.0403
2022-02-14 2021-12-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 2,800,041 -306,819 -9.88 21,862 -10.33 0.0410
2021-11-12 2021-09-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 3,106,860 260,699 9.16 24,380 6.39 0.0512
2021-08-06 2021-06-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 2,846,161 71,914 2.59 22,915 10.69 0.0508
2021-05-12 2021-03-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 2,774,247 -232,509 -7.73 20,702 17.88 0.0522
2021-02-08 2020-12-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 3,006,756 -256,245 -7.85 17,562 31.91 0.0454
2020-12-04 2020-09-30 13F/A-1 ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 3,263,001 -352,287 -9.74 13,314 -18.83 0.0386
2020-11-06 2020-09-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 3,268,136 -347,152 13,335 32,107.7151
2020-08-17 2020-06-30 13F/A-1 ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 3,615,288 -320,534 -8.14 16,402 11.38 0.0509
2020-08-11 2020-06-30 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 3,887,237 -48,585 21,255 57,655.3189
2020-05-14 2020-03-31 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 3,935,822 108,758 2.84 14,726 -30.82 0.0541
2020-02-06 2019-12-31 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 3,827,064 -572,223 -13.01 21,288 8.54 0.0635
2019-11-12 2019-09-30 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 4,399,287 11,337 0.26 19,613 13.18 0.0502
2019-08-14 2019-06-30 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 4,387,950 11,352 0.26 17,329 -8.13 0.0566
2019-05-15 2019-03-31 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 4,376,598 -859,306 -16.41 18,862 -24.57 0.0633
2019-02-13 2018-12-31 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 5,235,904 53,935 1.04 25,007 -0.08 0.0890
2018-11-08 2018-09-30 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 5,181,969 -255,083 -4.69 25,027 0.07 0.0907
2018-08-03 2018-06-30 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 5,437,052 1,103,640 25.47 25,010 -20.50 0.0850
2018-05-11 2018-03-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 4,333,412 195,502 4.72 31,461 17.33 0.1206
2018-02-08 2017-12-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 4,137,910 23,530 0.57 26,813 5.45 0.0931
2017-11-06 2017-09-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 4,114,380 -1,077,933 -20.76 25,427 -22.39 0.0904
2017-07-31 2017-06-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 5,192,313 285,741 5.82 32,763 3.05 0.1306
2017-05-05 2017-03-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 4,906,572 513,870 11.70 31,794 43.61 0.1393
2017-02-02 2016-12-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 4,392,702 -95,409 -2.13 22,139 -16.54 0.1072
2016-11-04 2016-09-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 4,488,111 450,606 11.16 26,525 17.74 0.1347
2016-08-11 2016-06-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 4,037,505 -125,707 -3.02 22,529 -7.50 0.1351
2016-05-10 2016-03-31 13F/A-1 ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 4,163,212 458,727 12.38 24,355 15.95 0.1516
2016-02-03 2015-12-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 3,704,485 157,441 4.44 21,004 7.86 0.1280
2015-11-02 2015-09-30 13F/A-1 ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 3,547,044 210,506 6.31 19,473 -11.57 0.1787
2015-10-30 2015-09-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 3,547,044 19,474
2015-08-07 2015-06-30 13F/A-1 ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 3,336,538 53,317 1.62 22,021 -6.85 0.1991
2015-08-04 2015-06-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 3,336,538 53,317 22,021 0.1991
2015-05-14 2015-03-31 13F/A-1 ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 3,283,221 -757,307 -18.74 23,640 -4.55 0.2053
2015-05-01 2015-03-31 13F ADEPTUS HEALTH CL A 00756M404 3,283,221 23,640
2015-02-10 2014-12-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 4,040,528 4,040,528 24,767 0.2189
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.