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

SecurityASX / ASE Technology Holding Co., Ltd. - Depositary Receipt (Common Stock)
InstitutionNINE MASTS CAPITAL Ltd
Latest Disclosed Ownership777,180 shares
Latest Disclosed Value $ 15,928,105
NINE MASTS CAPITAL Ltd reports 5.08% increase in ownership of ASX / ASE Technology Holding Co., Ltd. - Depositary Receipt (Common Stock)

On May 12, 2026 - NINE MASTS CAPITAL Ltd filed a 13F-HR form disclosing ownership of 777,180 shares of ASE Technology Holding Co., Ltd. - Depositary Receipt (Common Stock) (US:ASX) valued at $16,849,262 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 739,619 shares of ASE Technology Holding Co., Ltd. - Depositary Receipt (Common Stock). This represents a change in shares of 5.08% during the quarter. The current value of the position is $26,447,435 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)
2026-05-12 2026-03-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 777,180 37,561 5.08 15,928 33.77 2.2997
2026-02-10 2025-12-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 739,619 -102,067 -12.13 11,908 27.57 2.0505
2025-11-13 2025-09-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 841,686 189,318 29.02 9,334 38.53 3.8332
2025-08-13 2025-06-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 652,368 -1,017,254 -60.93 6,739 -53.93 2.4596
2025-05-13 2025-03-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 1,669,622 506,770 43.58 14,626 24.90 9.7142
2025-02-06 2024-12-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 1,162,852 171,463 17.30 11,710 21.02 2.0510
2024-11-12 2024-09-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 991,389 991,389 9,676 4.3463
2023-05-12 2023-03-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 0 -86,900 -100.00 0 -100.00
2023-02-07 2022-12-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 86,900 86,900 545 0.1740
2021-02-16 2020-12-31 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 0 -515,309 -100.00 0 -100.00
2020-12-04 2020-09-30 13F/A-1 ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 515,309 -483,763 -48.42 2,104 -53.97 1.6646
2020-11-13 2020-09-30 13F ASE TECHNOLOGY HLDG SPONSORED ADS 00215W100 515,309 -483,763 2,104 1,664,609.6395
2020-08-05 2020-06-30 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 999,072 -497,863 -33.26 4,571 -21.18 2.9764
2020-04-29 2020-03-31 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 1,496,935 -445,565 -22.94 5,799 -46.19 8.5107
2020-01-31 2019-12-31 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 1,942,500 -306,831 -13.64 10,777 -99.89 3.2710
2019-11-12 2019-09-30 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 2,249,331 180,331 8.72 10,260,462 124,844.74 1.9580
2019-08-08 2019-06-30 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 2,069,000 2,069,000 0.00 8,212 1.1762
2018-12-06 2018-09-30 13F/A-1 ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 0 -809,023 -100.00 0 -100.00
2018-08-13 2018-06-30 13F ASE TECHNOLOGY HOLDING CO LT SPONSORED ADS 00215W100 809,023 809,023 3,722 0.7219
2017-11-13 2017-09-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 0 -775,800 -100.00 0 -100.00
2017-08-11 2017-06-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 775,800 -883,066 -53.23 4,979 -53.68 0.5926
2017-05-11 2017-03-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 1,658,866 -751,187 -31.17 10,749 -12.75 1.8184
2017-02-14 2016-12-31 13F/A-1 ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 2,410,053 -235,261 -8.89 12,320 -22.33 2.5294
2017-02-09 2016-12-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 2,410,053 12,320
2016-11-14 2016-09-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 2,645,314 -204,298 -7.17 15,861 -2.01 3.1843
2016-08-09 2016-06-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 2,849,612 2,644,027 1,286.10 16,187 1,245.55 3.8977
2016-05-16 2016-03-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 205,585 -7,583 -3.56 1,203 -2.35 0.2250
2016-02-16 2015-12-31 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 213,168 -533,731 -71.46 1,232 -69.95 0.2528
2015-11-06 2015-09-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 746,899 268,124 56.00 4,100 26.50 1.0522
2015-08-14 2015-06-30 13F ADVANCED SEMICONDUCTOR ENGR SPONSORED ADR 00756M404 478,775 478,775 3,241 1.0617
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.