ASE Technology ASX
$31.63 +$1.91 (+6.43%)
Market closed · Nov 6, 8:10 pm ET · Last extended-hours $32.15 +1.66%
Open$32.41
Prev close$29.72
Day range$30.82 – $32.53
Volume13.59M
Market cap$70.98B
P/E (TTM)31.9
Dividend yield1.32%
Ownership & positioning
Who holds it, who is betting against it, and where the big money is moving
Institutional ownership40.9%-0.25 pts vs. prior quarter
Institutions holding749+18 vs. prior quarter
Insider trades (recent)0 buys / 9 sellsNet selling
Short interest0.53% of floatDays to cover 1.7 · as of 15 Oct 2026
Short-sale volume share15.4%5-day average of daily volume
Short-sale volume as % of daily volume
Large-order net flow, last 20 sessions
Net of large-order buying minus selling, in USD. Over this window: −$11.77M (7 inflow days, 13 outflow days).
Net flow by order size, last 20 sessions
Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.
The five largest holders on file together own 34.5% of shares outstanding.
Largest holders
By investor type
Reported short interest has held roughly steady near 0.53% of float over the last 6 biweekly reports (31 Jul 2026 to 15 Oct 2026).
Recent institutional activity
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| BlackRock | Mutual Fund | 2026/Q3 | +2,178,701 | 5.2% |
| T. Rowe Price Group, Inc. | Mutual Fund | 2026/Q3 | +1,608,500 | 0.5% |
| Carrhae Capital, LLP | Hedge Fund | 2026/Q3 | +1,464,677 | 0.1% |
| Franklin Resources | Mutual Fund | 2026/Q3 | +1,451,525 | 0.2% |
| Ninety One UK Limited | Mutual Fund | 2026/Q3 | +633,229 | 0.1% |
| Hung-Pen Chang | Individual/Insider | 2026/Q3 | +2,400,000 | 2.9% |
| BlackRock | Mutual Fund | 2026/Q3 | +2,164,937 | 5.2% |
| Hung-Pen Chang | Individual/Insider | 2026/Q3 | +2,250,000 | 2.9% |
| Uni-President Assets Management Corp. | Mutual Fund | 2026/Q3 | +7,432,817 | 0.5% |
| Nordea Investment Management AB | Mutual Fund | 2026/Q3 | +6,894,059 | 0.3% |
| Boston Partners Global Investors, Inc. | Mutual Fund | 2026/Q3 | +4,725,000 | 0.3% |
| Numeric Investors LLC | Hedge Fund | 2026/Q3 | +3,505,899 | 0.2% |
| JPMorgan Chase & Co. | Public Company | 2026/Q3 | +2,645,305 | 0.2% |
| Bank of America Corporation | Public Company | 2026/Q3 | +2,569,543 | 0.2% |
| Allianz Asset Management AG | Mutual Fund | 2026/Q3 | +2,393,395 | 0.4% |
Institutional buy/sell activity by reporting period, largest moves first.
Insider transactions
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 22 Jun 2026 | Tu-Tsun Wang | Chief Administrative Officer & Chief Corporate Governance Officer | Open Market Disposition | -11,000 | $697.00 | 767,000 |
| 2 Jun 2026 | Tu-Tsun Wang | Chief Administrative Officer & Chief Corporate Governance Officer | Open Market Disposition | -10,000 | $617.00 | 778,000 |
| 26 May 2026 | Changyi Chen | Representative Director | Open Market Disposition | -29,000 | $653.00 | 2,383,000 |
| 20 May 2026 | Changyi Chen | Representative Director | Open Market Disposition | -27,000 | $505.00 | 2,412,000 |
| 17 May 2026 | Changyi Chen | Representative Director | Open Market Disposition | -27,000 | $563.00 | 2,439,000 |
| 23 Apr 2026 | Changyi Chen | Representative Director | Open Market Disposition | -9,000 | $473.00 | 2,466,000 |
| 22 Apr 2026 | Changyi Chen | Representative Director | Open Market Disposition | -27,000 | $487.67 | 2,475,000 |
| 19 Apr 2026 | Tien-Szu Chen | Former Representative Director | Open Market Disposition | -530,000 | $471.00 | 2,251,821 |
| 19 Apr 2026 | Changyi Chen | Representative Director | Open Market Disposition | -27,000 | $461.50 | 2,502,000 |
| 17 Mar 2026 | Changyi Chen | Representative Director | Initial Statement of Beneficial | +0 | – | 2,583,000 |
| 17 Mar 2026 | Rui Rong Lo | GM of Kaohsiung Plant | Initial Statement of Beneficial | +0 | – | 500,000 |
| 17 Mar 2026 | Chien Shen Chang | Chairperson | Initial Statement of Beneficial | +0 | – | 6,000,000 |
| 17 Mar 2026 | Hung-Pen Chang | Vice Chairman, GM & President | Initial Statement of Beneficial | +0 | – | 124,175,228 |
| 17 Mar 2026 | Chi-Wen Tsai | Chairman & President of Siliconware Precision Industries Co., Ltd | Initial Statement of Beneficial | +0 | – | 15,264,000 |
| 17 Mar 2026 | Tien Wu | Group COO & Representative Director | Initial Statement of Beneficial | +0 | – | 7,677,473 |
| 17 Mar 2026 | Tien-Szu Chen | Former Representative Director | Initial Statement of Beneficial | +0 | – | 300,000 |
| 17 Mar 2026 | Kenneth Hsiang | Head of Investor Relations & Senior VP | Initial Statement of Beneficial | +0 | – | 250,000 |
| 17 Mar 2026 | Tu-Tsun Wang | Chief Administrative Officer & Chief Corporate Governance Officer | Initial Statement of Beneficial | +0 | – | 788,000 |
| 17 Mar 2026 | Shen-Fu Yu | Independent Director | Initial Statement of Beneficial | +0 | – | 2,388 |
| 17 Mar 2026 | Chen-Yen Wei | Chairman, President of Universal Scientific Industrial & GM of UGTW | Initial Statement of Beneficial | +0 | – | 366,115 |
From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.
Short interest, by report
| Report date | Shares short | % of float | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 11,883,887 | 0.5% | 1.7 |
| 30 Sep 2026 | 11,162,480 | 0.5% | 1.6 |
| 15 Sep 2026 | 13,699,782 | 0.6% | 2.1 |
| 31 Aug 2026 | 10,150,801 | 0.5% | 1.6 |
| 14 Aug 2026 | 8,739,586 | 0.4% | 1.2 |
| 31 Jul 2026 | 11,134,084 | 0.5% | 1.1 |
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