Comparable stake leader
MORGAN STANLEY
SEC ownership of ASE Technology Holding Co., Ltd.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001122411.
Disclosed value leader
MORGAN STANLEY
Comparable rows
0/50
Latest evidence
30 Sep 2026
- Public ticker
- ASX on NYSE
- Parsed ownership sources
-
13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
MORGAN STANLEY
Ranking: Comparable ownership first, then disclosed value
- Latest parsed ownership date
-
30 Sep 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001122411
- Issuer location
- Kaohsiung
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
1 signal
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of ASE Technology Holding Co., Ltd. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
MORGAN STANLEY
Disclosed value leader
MORGAN STANLEY
Comparable rows
0/50
Latest evidence
30 Sep 2026
13F
Highest disclosed value: $283,804,684
50 rows are not safely comparable across share classes.
Showing 1-8 of 50 holder rows.
Quick read
MORGAN STANLEY has the largest disclosed position value at $283.8M.
0 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens MORGAN STANLEY's linked filing trail.
Disclosed position value
Top 5
MORGAN STANLEY
$283.8M
AMERICAN CENTURY COMPANIES INC
$206.27M
Fisher Asset Management, LLC
$184.27M
Rafferty Asset Management, LLC
$148.78M
Creative Planning
$91.9M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| MORGAN STANLEY |
13F
Company
|
—
denominator unverified
|
$283,804,684
6,383,370 shares
|
— | 30 Sep 2026 |
| AMERICAN CENTURY COMPANIES INC |
13F
Company
|
—
denominator unverified
|
$206,271,592
4,639,487 shares
|
— | 30 Sep 2026 |
| Fisher Asset Management, LLC |
13F
Company
|
—
denominator unverified
|
$184,271,626
4,144,661 shares
|
— | 30 Sep 2026 |
| Rafferty Asset Management, LLC |
13F
Company
|
—
denominator unverified
|
$148,775,876
3,346,286 shares
|
— | 30 Sep 2026 |
| Creative Planning |
13F
Company
|
—
denominator unverified
|
$91,900,536
2,067,039 shares
|
— | 30 Sep 2026 |
| BNP PARIBAS FINANCIAL MARKETS |
13F
Company
|
—
denominator unverified
|
$86,208,474
1,939,012 shares
|
— | 30 Sep 2026 |
| Qube Research & Technologies Ltd |
13F
Company
|
—
denominator unverified
|
$78,826,691
1,772,980 shares
|
— | 30 Sep 2026 |
| Cullen Capital Management, LLC |
13F
Company
|
—
denominator unverified
|
$78,509,795
1,765,852 shares
|
— | 30 Sep 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
No eligible buy or sell activity is available for this window. No eligible Buy or Sell transactions are available in this dataset since 15 Nov 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 33 reporting-owner rows connected to ASE Technology Holding Co., Ltd.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
33
Largest Forms 3/4/5 holder
Tien-Szu Chen
Net 12M change
$0
Latest report
06 Nov 2026
Recent insider transactions for ASE Technology Holding Co., Ltd.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Tien-Szu Chen | ASX | Ordinary Shares | Options Exercise | 11.8% | 300,000 | 2,851,821 | 06 Nov 2026 | Direct | ||
| Tien-Szu Chen | ASX | Stock Option (Right to Buy) | Options Exercise | -100% | -300,000 | 0 | 06 Nov 2026 | Direct | ||
| Chih-Hsiao Chung | ASX | Ordinary Shares | Options Exercise | 70.6% | 300,000 | 725,000 | 30 Oct 2026 | Direct | ||
| Chih-Hsiao Chung | ASX | Stock Option (Right to Buy) | Options Exercise | -60% | -300,000 | 200,000 | 30 Oct 2026 | Direct | ||
| Du-Tsuen Uang | ASX | Ordinary Shares | Sale | -0.36% | -3,000 | 838,000 | 12 Oct 2026 | Direct | ||
| Hung Pen Chang | ASX | Ordinary Shares | Options Exercise | 6.67% | 300,000 | 4,800,000 | 22 Sep 2026 | Direct | ||
| Hung Pen Chang | ASX | Stock Option (Right to Buy) | Options Exercise | -20% | -300,000 | 1,200,000 | 22 Sep 2026 | Direct | ||
| Chi-Wen Tsai | ASX | Ordinary Shares | Award | 2.19% | 334,000 | 15,598,000 | 07 Sep 2026 | Direct | ||
| Chih-Hsiao Chung | ASX | Ordinary Shares | Award | 7.59% | 30,000 | 425,000 | 07 Sep 2026 | Direct | ||
| Kenneth Hsiang | ASX | Ordinary Shares | Award | 58% | 40,000 | 109,000 | 07 Sep 2026 | Direct | ||
| Chung Lin | ASX | Ordinary Shares | Award | 21.4% | 30,000 | 170,278 | 07 Sep 2026 | Direct | ||
| Raymond Lo | ASX | Ordinary Shares | Award | 10% | 400,000 | 4,383,430 | 07 Sep 2026 | Direct | ||
| Hung-Ming Kuo | ASX | Ordinary Shares | Award | 5.34% | 50,000 | 985,500 | 07 Sep 2026 | Direct | ||
| Du-Tsuen Uang | ASX | Ordinary Shares | Award | 12% | 90,000 | 841,000 | 07 Sep 2026 | Direct | ||
| Hung-Szu Tung | ASX | Ordinary Shares | Award | 10.5% | 400,000 | 4,202,954 | 07 Sep 2026 | Direct | ||
| Andrew R. Tang | ASX | Ordinary Shares | Award | 37.8% | 85,000 | 310,000 | 07 Sep 2026 | Direct | ||
| Tien-Szu Chen | ASX | Ordinary Shares | Award | 13.3% | 300,000 | 2,551,821 | 07 Sep 2026 | Direct | ||
| Tien-Yue Wu | ASX | Ordinary Shares | Award | 7.82% | 600,000 | 8,277,473 | 07 Sep 2026 | Direct | ||
| Jeffrey Chen | ASX | Ordinary Shares | Gift | 600,000 | 600,000 | 07 Sep 2026 | By Spouse | |||
| Jeffrey Chen | ASX | Ordinary Shares | Gift | -22.4% | -600,000 | 2,083,000 | 07 Sep 2026 | Direct | ||
| Jeffrey Chen | ASX | Ordinary Shares | Award | 12.6% | 300,000 | 2,683,000 | 07 Sep 2026 | Direct | ||
| Chih-Hsiao Chung | ASX | Ordinary Shares | Options Exercise | 22.7% | 73,000 | 395,000 | 13 Aug 2026 | Direct | ||
| Chih-Hsiao Chung | ASX | Stock Option (Right to Buy) | Options Exercise | -100% | -73,000 | 0 | 13 Aug 2026 | Direct | ||
| Chih-Hsiao Chung | ASX | Ordinary Shares | Options Exercise | 973.3% | 292,000 | 322,000 | 12 Aug 2026 | Direct | ||
| Chih-Hsiao Chung | ASX | Stock Option (Right to Buy) | Options Exercise | -80% | -292,000 | 73,000 | 12 Aug 2026 | Direct | ||
| Chung Lin | ASX | Ordinary Shares | Options Exercise | 33.2% | 35,000 | 140,278 | 29 Jul 2026 | Direct | ||
| Chung Lin | ASX | Stock Option (Right to Buy) | Options Exercise | -100% | -35,000 | 0 | 29 Jul 2026 | Direct | ||
| Du-Tsuen Uang | ASX | Ordinary Shares | Sale | -0.4% | -3,000 | 751,000 | 22 Jul 2026 | Direct | ||
| Du-Tsuen Uang | ASX | Ordinary Shares | Sale | -0.4% | -3,000 | 754,000 | 15 Jul 2026 | Direct | ||
| Hung Pen Chang | ASX | Ordinary Shares | Options Exercise | 4,500,000 | 4,500,000 | 13 Jul 2026 | Direct | |||
| Hung Pen Chang | ASX | Stock Option (Right to Buy) | Options Exercise | -100% | -4,500,000 | 0 | 13 Jul 2026 | Direct | ||
| Du-Tsuen Uang | ASX | Ordinary Shares | Sale | -0.26% | -2,000 | 757,000 | 06 Jul 2026 | Direct | ||
| Du-Tsuen Uang | ASX | Ordinary Shares | Sale | -0.39% | -3,000 | 759,000 | 01 Jul 2026 | Direct | ||
| Du-Tsuen Uang | ASX | Ordinary Shares | Sale | -0.65% | -5,000 | 762,000 | 30 Jun 2026 | Direct | ||
| Du-Tsuen Uang | ASX | Ordinary Shares | Sale | -0.39% | -3,000 | 767,000 | 23 Jun 2026 | Direct | ||
| Du-Tsuen Uang | ASX | Ordinary Shares | Sale | -0.65% | -5,000 | 770,000 | 22 Jun 2026 | Direct | ||
| Du-Tsuen Uang | ASX | Ordinary Shares | Sale | -0.39% | -3,000 | 775,000 | 18 Jun 2026 | Direct | ||
| Du-Tsuen Uang | ASX | Ordinary Shares | Sale | -0.64% | -5,000 | 778,000 | 03 Jun 2026 | Direct | ||
| Du-Tsuen Uang | ASX | Ordinary Shares | Sale | -0.63% | -5,000 | 783,000 | 01 Jun 2026 | Direct | ||
| Jeffrey Chen | ASX | Ordinary Shares | Sale | -100% | -2,000 | 0 | 27 May 2026 | By Spouse | ||
| Jeffrey Chen | ASX | Ordinary Shares | Sale | -81.8% | -9,000 | 2,000 | 26 May 2026 | By Spouse | ||
| Jeffrey Chen | ASX | Ordinary Shares | Sale | -45% | -9,000 | 11,000 | 25 May 2026 | By Spouse | ||
| Jeffrey Chen | ASX | Ordinary Shares | Sale | -31% | -9,000 | 20,000 | 22 May 2026 | By Spouse | ||
| Jeffrey Chen | ASX | Ordinary Shares | Sale | -23.7% | -9,000 | 29,000 | 21 May 2026 | By Spouse | ||
| Jeffrey Chen | ASX | Ordinary Shares | Sale | -19.2% | -9,000 | 38,000 | 20 May 2026 | By Spouse | ||
| Jeffrey Chen | ASX | Ordinary Shares | Sale | -16.1% | -9,000 | 47,000 | 19 May 2026 | By Spouse | ||
| Jeffrey Chen | ASX | Ordinary Shares | Sale | -13.8% | -9,000 | 56,000 | 18 May 2026 | By Spouse | ||
| Jeffrey Chen | ASX | Ordinary Shares | Sale | -12.2% | -9,000 | 65,000 | 15 May 2026 | By Spouse | ||
| Jeffrey Chen | ASX | Ordinary Shares | Sale | -10.8% | -9,000 | 74,000 | 14 May 2026 | By Spouse | ||
| Jeffrey Chen | ASX | Ordinary Shares | Sale | -9.78% | -9,000 | 83,000 | 24 Apr 2026 | By Spouse |
* marks a reported price that did not pass the local price check.