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

SecurityASX / ASE Technology Holding Co., Ltd. - Depositary Receipt (Common Stock)
InstitutionCitigroup Inc
Latest Disclosed Ownership3,459,629 shares
Latest Disclosed Value $ 75,004,757
Citigroup Inc reports 9.45% increase in ownership of ASX / ASE Technology Holding Co., Ltd. - Depositary Receipt (Common Stock)

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 3,459,629 shares of ASE Technology Holding Co., Ltd. - Depositary Receipt (Common Stock) (US:ASX) valued at $75,004,757 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 3,160,889 shares of ASE Technology Holding Co., Ltd. - Depositary Receipt (Common Stock). This represents a change in shares of 9.45% during the quarter. The current value of the position is $138,073,793 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)
2026-05-11 2026-03-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 3,459,629 298,740 9.45 75,005 47.38 0.0161
2026-02-13 2025-12-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 3,160,889 618,003 24.30 50,890 80.46 0.0225
2025-11-10 2025-09-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 2,542,886 -1,399,274 -35.50 28,201 -30.75 0.0126
2025-08-11 2025-06-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 3,942,160 -356,176 -8.29 40,723 8.15 0.0200
2025-05-12 2025-03-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 4,298,336 -1,230,552 -22.26 37,653 -32.37 0.0192
2025-02-12 2024-12-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 5,528,888 1,205,829 27.89 55,676 31.95 0.0330
2024-11-12 2024-09-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 4,323,059 382,425 9.70 42,193 -6.24 0.0244
2024-08-12 2024-06-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 3,940,634 780,535 24.70 45,002 29.58 0.0288
2024-05-10 2024-03-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 3,160,099 1,965,326 164.49 34,729 208.92 0.0228
2024-02-09 2023-12-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 1,194,773 -214,048 -15.19 11,243 6.12 0.0079
2023-12-06 2023-09-30 13F/A-1 ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 1,408,821 -76,566 -5.15 10,594 -8.44 0.0079
2023-11-09 2023-09-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 1,408,821 -76,566 10,594 0.0032
2023-08-10 2023-06-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 1,485,387 353,385 31.22 11,571 28.25 0.0076
2023-05-11 2023-03-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 1,132,002 257,494 29.44 9,022 64.54 0.0063
2023-02-09 2022-12-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 874,508 -377,314 -30.14 5,483 -12.24 0.0044
2022-11-10 2022-09-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 1,251,822 -234,633 -15.78 6,248 -18.70 0.0045
2022-08-10 2022-06-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 1,486,455 -556,998 -27.26 7,685 -46.96 0.0057
2022-05-12 2022-03-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 2,043,453 -417,330 -16.96 14,489 -24.61 0.0088
2022-02-10 2021-12-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 2,460,783 -577,760 -19.01 19,219 -19.42 0.0103
2021-11-10 2021-09-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 3,038,543 1,792,248 143.81 23,852 137.74 0.0141
2021-08-10 2021-06-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 1,246,295 861,005 223.47 10,033 238.15 0.0060
2021-05-13 2021-03-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 385,290 200,507 108.51 2,967 174.98 0.0019
2021-02-11 2020-12-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 184,783 -2,520 -1.35 1,079 41.05 0.0006
2020-11-12 2020-09-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 187,303 -213,348 -53.25 765 -57.97 0.0005
2020-08-12 2020-06-30 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 400,651 82,508 25.93 1,820 52.94 0.0014
2020-05-12 2020-03-31 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 318,143 -40,412 -11.27 1,190 -40.32 0.0011
2020-02-12 2019-12-31 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 358,555 288,656 412.96 1,994 539.10 0.0014
2019-11-08 2019-09-30 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 69,899 -456 -0.65 312 12.64 0.0002
2019-08-12 2019-06-30 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 70,355 6,060 9.43 277 0.00 0.0002
2019-05-13 2019-03-31 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 64,295 921 1.45 277 16.88 0.0003
2019-02-12 2018-12-31 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 63,374 -31,356 -33.10 237 -48.25 0.0002
2018-11-13 2018-09-30 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 94,730 1,678 1.80 458 7.01 0.0004
2018-08-10 2018-06-30 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 93,052 19,820 27.06 428 -19.40 0.0004
2018-05-11 2018-03-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 73,232 977 1.35 531 13.46 0.0004
2018-02-12 2017-12-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 72,255 1,556 2.20 468 7.09 0.0004
2017-11-13 2017-09-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 70,699 -7,559 -9.66 437 -11.54 0.0004
2017-08-11 2017-06-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 78,258 -462,968 -85.54 494 -85.91 0.0004
2017-05-12 2017-03-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 541,226 -54,648 -9.17 3,507 16.78 0.0031
2017-02-10 2016-12-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 595,874 -24,029 -3.88 3,003 -18.02 0.0027
2016-11-10 2016-09-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 619,903 505,547 442.08 3,663 474.14 0.0034
2016-08-12 2016-06-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 114,356 32,805 40.23 638 33.75 0.0007
2016-05-13 2016-03-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 81,551 -12,740 -13.51 477 -10.84 0.0005
2016-02-12 2015-12-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 94,291 -554,864 -85.47 535 -84.99 0.0005
2015-11-13 2015-09-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 649,155 348,791 116.12 3,564 79.73 0.0033
2015-08-13 2015-06-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 300,364 -27,769 -8.46 1,983 -16.05 0.0018
2015-05-14 2015-03-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 328,133 121,743 58.99 2,362 86.72 0.0023
2015-02-17 2014-12-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 206,390 110,913 116.17 1,265 124.29 0.0011
2014-11-14 2014-09-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 95,477 -1,173 -1.21 564 -10.19 0.0005
2014-08-14 2014-06-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 96,650 -3,730 -3.72 628 12.75 0.0006
2014-05-15 2014-03-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 100,380 5,385 5.67 557 22.15 0.0006
2014-02-14 2013-12-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 94,995 -298,118 -75.84 456 -75.73 0.0004
2013-11-14 2013-09-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 393,113 351,212 838.19 1,879 1,005.29 0.0018
2013-08-14 2013-06-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 41,901 41,901 170 0.0002
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.