Insider Cluster (2 insiders) ·Filed Apr 20, 2026

ASX

ASE Technology Holding Co., Ltd.
BEARISH
Impact 7/10
Horizondays Processed5mo ago
Insider cluster: 2 insiders, $156.7M total
Actionable Insight ▼ Bearish

The scale and concentration of selling, especially by a senior executive like Chen Tien-Szu, suggests potential lack of confidence in near-term prospects. Traders should monitor upcoming earnings and any changes in semiconductor demand trends for confirmation of weakening fundamentals.

DirectionBearish
Confidencehigh
Horizondays
Final — all horizons settled through T+60d ⚠ clustered
ASX ▲ +39.07% at T+60d
SHORT call ✗ call lost -39.07% · α vs SPY -32.29% · entry $29.28 → $40.72
Entry anchored
Apr 17, 03:59 PM ET
via exchange tick
T+1d
+1.09%
call -1.09% · α -1.75%
$29.60
settled 6mo ago
T+5d
+5.36%
call -5.36% · α -4.45%
$30.85
settled 5mo ago
T+20d
+8.09%
call -8.09% · α -3.89%
$31.65
settled 5mo ago
T+60d
+39.07%
call -39.07% · α -32.29%
$40.72
settled 3mo ago

Price Chart

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Executive Summary

Two insiders at ASE Technology sold a combined $156.73 million in shares over a 7-day window, led by General Manager Chen Tien-Szu who sold $152.55 million. The sales represent a significant portion of insider activity and are notable given the high dollar volume relative to the company's market cap.

Key Financial Metrics

Direction
selling
Total Value
$156.7M
Insiders
2

Key Facts

  • Chen Tien-Szu, GM of ASE Inc. Chung-Li Branch, sold 328,000 shares for $152.55 million in an open-market transaction.
  • Director Chen Jeffrey sold 9,000 shares for $4.17 million on 2026-04-21, part of a series of open-market sales totaling over $18 million in one week.
  • Total insider selling in the last 7 days amounts to $189 million, with this cluster representing the bulk of that volume.
  • All transactions were open-market sales (S), indicating deliberate divestment rather than routine or non-cash events.

Financial Impact

$156.73 million in insider sales over 7 days, representing approximately 0.24% of the $66.7B market cap.

insider ownershipmarket sentimentfloat

Risk Factors

  • Large insider sales can signal negative sentiment, especially when concentrated among senior executives.
  • Potential for downward price pressure if more insiders follow suit or if institutional holders interpret this as a bearish signal.

Market Snapshot

Exchange
NYSE
Sector
Semiconductors & Related Devices

Investment Themes

Semiconductors

Documents Analyzed

This report is based on 1 SEC document filed with EDGAR.

DocumentAccession Number
CLUSTER Data (Synthetic)cluster-ASX-1776939161090
12 reports for ASX
Performance horizon
75% Hit rate 6 of 8 directional calls best @ T+60▲ +87.41%Apr 1, 2026
Filters
Rows
Reports for ASX — sortable, filterable
TypeNow
Sep 9, 2026
23d ago
6-K
BULLISH ★ 6/10
$41.20 $38.44▼ −6.70%▼ −6.37%$47.45 (+15.17%)
Aug 10, 2026
7w ago
6-K
NEUTRAL ★ 1/10
$37.59 $39.91▲ +6.17%▲ +6.22%$47.45 (+26.23%)
Aug 3, 2026
8w ago
6-K
BULLISH ★ 7/10
$36.68 $37.59▲ +2.48%▲ +0.45%$47.45 (+29.36%)
Jul 30, 2026
9w ago
6-K
BULLISH ★ 7/10
$34.77 $37.25▲ +7.13%▲ +3.51%$47.45 (+36.47%)
Jun 9, 2026
16w ago
6-K
BULLISH ★ 6/10
$35.08 $38.50▲ +9.75%▲ +7.34%$47.45 (+35.26%)
Jun 3, 2026
17w ago
Insider Cluster
NEUTRAL ★ 2/10
$39.91 $34.30▼ −14.06%▼ −10.24%$47.45 (+18.89%)
May 8, 2026
21w ago
6-K
BULLISH ★ 6/10
$34.23 $35.25▲ +2.98%▲ +1.52%$47.45 (+38.62%)
Apr 29, 2026
22w ago
6-K
BULLISH ★ 7/10
$30.59 $33.44▲ +9.32%▲ +6.21%$47.45 (+55.12%)
Apr 20, 2026
23w ago
Insider Cluster
BEARISH ★ 7/10
$29.28 $30.85▼ −5.36%▼ −4.45%$47.45 (−62.06%)
Apr 20, 2026
23w ago
Insider Cluster
BEARISH ★ 7/10
$29.28 $30.85▼ −5.36%▼ −4.45%$47.45 (−62.06%)
Showing 10 of 12

US Market Status

Market Closed — Opens Mon (65h 6m)

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Report published Apr 23, 2026