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ASE Technology Holding Co., Ltd.
ASX·NYSE·USD
$45.76
-1.02 (-2.18%)
Close · Oct 7, 2026 · Close Prices from Tiingo.com
ASX
ASE Technology Holding Co., Ltd. · NYSE
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
ASXS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of ASX by members of U.S. Congress · 4 on record
| Politician | Stock | Type | Filed | Traded | |
|---|---|---|---|---|---|
 Sheri BiggsHouse · R · SC |
ASXASE Technology Holding Co., Ltd. · Stock |
Sale $1,001 - $15,000 |
Oct 5, 2025 | Mar 18, 2025 | Filing ↗ |
 John H. RutherfordHouse · R · FL |
ASXASE Technology Holding Co., Ltd. · Stock |
Sale $1,001 - $15,000 |
Apr 19, 2022 | Mar 16, 2022 | Filing ↗ |
| John H. RutherfordHouse · R · FL |
ASXASE Technology Holding Co., Ltd. · Stock |
Purchase $1,001 - $15,000 |
Aug 20, 2018 | Aug 14, 2017 | Filing ↗ |
 Lois FrankelHouse · D · FL |
ASXASE Technology Holding Co., Ltd. · Stock |
Sale $1,001 - $15,000 |
Jun 18, 2014 | Jun 12, 2014 | Filing ↗ |
Whale Activity
Position changes in ASX reported for 2026-06-30 by 12 tracked institutional filers
- Increased4
- New1
- Held0
- Decreased1
- Closed3
- No prior filing3
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 26.3M | $1.18B | increased |
| Cullen Capital Management, LLC | 2.1M | $94.3M | — |
| MILLENNIUM MANAGEMENT LLC | 1.3M | $56.6M | increased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 775.1K | $35.0M | decreased |
| VANGUARD CAPITAL MANAGEMENT LLC | 191.9K | $8.7M | increased |
| TWO SIGMA INVESTMENTS, LP | 163.6K | $7.4M | increased |
| BAROMETER CAPITAL MANAGEMENT INC. | 159.5K | $7.1M | — |
| MAINSTAY CAPITAL MANAGEMENT LLC /ADV | 61.7K | $2.8M | — |
| D. E. Shaw & Co., Inc. | 10.8K | $487K | new |
| Point72 Asset Management | 0 | $0 | closed |
| Citadel Advisors LLC | 0 | $0 | closed |
| Bridgewater Associates | 0 | $0 | closed |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by ASX insiders, by quarter · Form 4
Recent Insider Transactions
40 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| Uang Du-TsuenChief Administration Officer | Sale | −3,000 | n/c | — | Jul 22, 2026 | Form 4 ↗ |
| Uang Du-TsuenChief Administration Officer | Sale | −3,000 | n/c | — | Jul 15, 2026 | Form 4 ↗ |
| Uang Du-TsuenChief Administration Officer | Sale | −2,000 | n/c | — | Jul 6, 2026 | Form 4 ↗ |
| Uang Du-TsuenChief Administration Officer | Sale | −3,000 | n/c | — | Jul 1, 2026 | Form 4 ↗ |
| Uang Du-TsuenChief Administration Officer | Sale | −3,000 | n/c | — | Jun 30, 2026 | Form 4 ↗ |
| Uang Du-TsuenChief Administration Officer | Sale | −2,000 | n/c | — | Jun 30, 2026 | Form 4 ↗ |
| Uang Du-TsuenChief Administration Officer | Sale | −3,000 | $697.00 | $2.1M | Jun 23, 2026 | Form 4 ↗ |
| Uang Du-TsuenChief Administration Officer | Sale | −5,000 | $667.00 | $3.3M | Jun 22, 2026 | Form 4 ↗ |
| Uang Du-TsuenChief Administration Officer | Sale | −3,000 | $611.00 | $1.8M | Jun 18, 2026 | Form 4 ↗ |
| Uang Du-TsuenChief Administration Officer | Sale | −5,000 | $617.00 | $3.1M | Jun 3, 2026 | Form 4 ↗ |
| Uang Du-TsuenChief Administration Officer | Sale | −5,000 | $607.00 | $3.0M | Jun 1, 2026 | Form 4 ↗ |
| Chen JeffreyDirector | Sale | −2,000 | $653.00 | $1.3M | May 27, 2026 | Form 4 ↗ |
| Chen JeffreyDirector | Sale | −9,000 | $630.00 | $5.7M | May 26, 2026 | Form 4 ↗ |
| Chen JeffreyDirector | Sale | −9,000 | $590.00 | $5.3M | May 25, 2026 | Form 4 ↗ |
| Chen JeffreyDirector | Sale | −9,000 | $538.00 | $4.8M | May 22, 2026 | Form 4 ↗ |
| Chen JeffreyDirector | Sale | −9,000 | $505.00 | $4.5M | May 21, 2026 | Form 4 ↗ |
| Chen JeffreyDirector | Sale | −9,000 | $477.00 | $4.3M | May 20, 2026 | Form 4 ↗ |
| Chen JeffreyDirector | Sale | −9,000 | $483.00 | $4.3M | May 19, 2026 | Form 4 ↗ |
| Chen JeffreyDirector | Sale | −9,000 | $506.00 | $4.6M | May 18, 2026 | Form 4 ↗ |
| Chen JeffreyDirector | Sale | −9,000 | $563.00 | $5.1M | May 15, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding ASX · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| iShares Semiconductor ETF iShares Trust | 12.9M | $581.6M | 1.22% | Jun 30, 2026 |
| Avantis Emerging Markets Equity ETF American Century ETF Trust | 4.4M | $170.3M | 0.65% | May 31, 2026 |
| Direxion Daily Semiconductor Bull 3X Shares Direxion Shares ETF Trust | 4.6M | $161.7M | 0.83% | Jul 31, 2026 |
| YieldMax(R) Semiconductor Portfolio Option Income ETF Tidal Trust II | 1.1M | $38.6M | 3.78% | Jul 31, 2026 |
| Amplify CWP International Enhanced Dividend Income ETF Amplify ETF Trust | 642.4K | $29.0M | 2.25% | Jun 30, 2026 |
| Dimensional Emerging Core Equity Market ETF Dimensional ETF Trust | 637.5K | $22.4M | 0.24% | Jul 31, 2026 |
| Avantis Emerging Markets Value ETF American Century ETF Trust | 566.1K | $21.7M | 1.48% | May 31, 2026 |
| Dimensional Emerging Markets Value ETF Dimensional ETF Trust | 374.6K | $13.2M | 0.66% | Jul 31, 2026 |
| iShares Flexible Equity Active ETF BlackRock ETF Trust | 294.4K | $10.4M | 0.64% | Jul 31, 2026 |
| Fidelity Blue Chip Growth Fund Fidelity Securities Fund | 276.8K | $9.7M | 0.01% | Jul 31, 2026 |
Mutual funds and ETFs whose N-PORT filings list ASX's shares (CUSIP 00215W100), each fund at its latest report since Mar 8, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
No 13D/13G beneficial-ownership filings on record.
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming ASE Technology Holding Co., Ltd. as client
No lobbying filings found naming ASE Technology Holding Co., Ltd. as the client.
Government Contracts
Federal awards to ASE Technology Holding Co., Ltd. · USAspending
No federal contract awards found for ASE Technology Holding Co., Ltd..
U.S. Patents
Recent USPTO applications naming ASE Technology Holding Co., Ltd.
No USPTO patent applications found for ASE Technology Holding Co., Ltd..
Annual Financials
From ASX's 10-K filings · XBRL
No annual XBRL figures on record for ASX. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
- 33-for-29Stock splitAug 20, 2012
- 29-for-26Stock splitAug 12, 2011
- 11-for-10Stock splitJul 27, 2010
- 34-for-33Stock splitAug 13, 2008
- 18-for-17Stock splitAug 25, 2004
- 35-for-29Stock splitJul 16, 2001
Split dates and ratios from the price history · Close Prices from Tiingo.com
Material Events (8-K)
Corporate events filed with the SEC
No 8-K filings on record.
About ASE Technology Holding Co., Ltd.
From SEC EDGAR company records
Industry (SIC 3674)Semiconductors & Related Devices
SectorTechnology
HeadquartersKAOHSIUNG
IncorporatedF5
SEC CIK0001122411 ↗
Former namesASE Industrial Holding Co., Ltd., ADVANCED SEMICONDUCTOR ENGINEERING INC