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ASX · ASE Technology Holding Co., Ltd. · Holdings

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$42.06 +2.15 (+5.39%) Q4 2025 earnings call transcript
Market Cap
$87.75B
Shares
2.20B
Volume · Oct 27 9.49M Avg daily vol (3M) 7.37M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 502
Total Value: $7,266,972,176
Total Shares: 161,159,878
Showing 1–100 of 520 holdings by value · page 1 of 6

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 491 13F filers
Top Holder
16.6%
Sep 2023 → Jun 2026 · range 10.4% – 16.6%
of institutional value
Top 5
37.7%
Sep 2023 → Jun 2026 · range 37.1% – 46.7%
of institutional value
Top 10
54.7%
Sep 2023 → Jun 2026 · range 54.2% – 64.7%
of institutional value
HHI
492
Sep 2023 → Jun 2026 · range 441 – 597
Broadly held

Who Holds ASX

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 487 filers, like-for-like change -2.6%; actively managed books -9.3%; index-like books +15.1%.

Holder type Share Filers Change
Registered adviser 23.0% 288 -7.0%
Exempt adviser 0.2% 4 -88.2%
Adviser 8.3% 12 -31.8%
Bank 22.0% 26 +15.4%
Insurer 0.0% 1 -35.0%
Broker-dealer 0.4% 2 +70.8%
Benefit plan 0.0% 1 new
Non-US 1.3% 9 -18.4%
Holding company 27.6% 10 +15.5%
Unknown 17.2% 134 -10.2%

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Excluded 7 holders with no observed 2026-03-31 13F and 7 holders with no observed 2026-06-30 13F.

Conviction and Crowding

487 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders
6
1.23% of filers hold it in their top 10
Mar 31, 2026: 3
Holders above 5%
3
median weight 0.015%
Mar 31, 2026: 1
Crowding
—
a foreign private issuer reports ordinary shares, a different unit from the listed shares
Private-fund advisers
—
of shares outstanding
Institutional ownership
—
a foreign private issuer reports ordinary shares, a different unit from the listed shares
Top 10 holders
56.5%
of 13F shares, Herfindahl 0.052
Active holders
-9.3%
like-for-like share change of active filers
5% stakes on record
0
0 13D, 0 13G
How long holders have held it value-weighted 17.4 quarters
Under 1 year 10.5% 1 to 3 years 27.3% 3 years or more 62.3% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost
$19.09
estimated per share
Mar 31, 2026: $14.06
Quarter-end price
$45.12
implied by 13F values
Estimated gain or loss
+136.4%
price against the estimated cost
Estimated at a loss
0.000%
of costed 13F value

Estimated cost covers 37.4% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies ASX's active holders also own, quarter ended Jun 30, 2026
# Company Shared holders
1 UMC United Microelectronics Corp 32
2 KB KB Financial Group Inc. 25
3 WF Woori Financial Group Inc. 12
4 SHG Shinhan Financial Group Co Ltd 15
5 CHT Chunghwa Telecom Co Ltd 7
6 PKX Posco Holdings Inc. 6
7 IBN Icici Bank Ltd 19
8 HSBC Hsbc Holdings PLC 24
9 SAN Banco Santander, S.A. 20
10 SSL Sasol Ltd 6

Shareholder Targets

13F filers that own its peers but not ASX, quarter ended Jun 30, 2026

Found through its holder-overlap peers: UMC, KB, WF, SHG, CHT, PKX, IBN, HSBC, SAN, SSL, MUFG, TSM, BCS, UBS, NVS, SMFG, SKM, KT, WDC, LRCX. 4,427 filers in all.

# Filer In peers
1 STATE STREET CORP Bank, Index-like $37,587,736,571 16 held
2 Capital World Investors Adviser, Diversified active $27,879,327,631 9 held
3 NORGES BANK Non-US, Index-like $15,878,366,086 6 held
4 VAN ECK ASSOCIATES CORP Registered adviser, Index-like $13,185,666,512 8 held
5 Sanders Capital, LLC Registered adviser, Concentrated $12,745,912,214 3 held
6 Jupiter Topco LLC Unknown, Diversified active $8,859,042,785 7 held
7 COATUE MANAGEMENT LLC Registered adviser, Concentrated $8,348,863,982 2 held
8 ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Registered adviser, Diversified active $7,878,069,363 13 held
9 Capital Research Global Investors Adviser, Diversified active $7,676,961,734 8 held
10 WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active $7,652,619,301 11 held

Fund Ownership of ASX by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 0.75% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 0.02% 331,829
Index ETFs 0.73% 16,124,929
Active ETFs 0.09% 1,965,597
Active funds 0.06% 1,386,143
Unclassified 0.28% 6,178,884
All registered funds 1.18% 25,987,382
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Showing 100 of 520
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Holder Value (USD) % of 13F Shares Open

Showing the top 100 of 520 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 1122411 CUSIP 00215W100 13F (30d) 117 filings 117 filers Visit website Investor relations