Why did the Taiwan stock market surge today?

Rising AI-driven semiconductor demand led TSMC and MediaTek to rally, boosting investor sentiment across the market.

Which companies hit the upper trading limit?

Unimicron, TMSC, Advantech, and Hanwha Aerospace Taiwan hit limit-up, led by PCB and industrial tech sectors.

How does Taiwan's market affect Japanese firms?

Taiwan is key to Japan's electronics supply chain; TSMC's performance indirectly impacts Japanese tech suppliers.

Intraday Update: Unimicron and TMSC Surge to Limit-Up! Taiwan Stock Market Soars Nearly 1,500 Points, TSMC and MediaTek Fire Up

Published Jul 21, 2026 1:02 PM ・ Updated Jul 21, 2026 2:20 PM ・ 4 min read ・ Source: PR Times

Taiwan's stock market surged today, with the main index rebounding from early losses to rise 3.52% by noon, reaching 43,944.53 points. Semiconductor and PCB-related stocks led the rally, with 55 companies hitting the upper trading limit.

Taiwan's stock market showed strong momentum today (21st), recovering from an early morning dip and climbing steadily throughout the session.

According to the latest intraday data, the main index briefly dipped to 42,449.7 points (-0.52%) at 09:01 AM, but was quickly supported by buying interest. By around noon, the index had surged to 43,944.53 points, marking a 3.52% gain.

In terms of market breadth, 55 listed and OTC companies hit the upper price limit (limit-up), while 9 stocks hit the lower limit (limit-down).

Performance of Key Weighted Stocks

Major large-cap stocks, particularly in electronics and finance, posted broad gains, driving the overall market higher:

- TSMC (2330): 2,385 ▲60 (+2.59%) - Hon Hai (2317): 245.5 ▲11 (+4.48%) - MediaTek (2454): 3,555 ▲220 (+6.44%) - Quanta Computer (2382): 320 ▲3 (+1.42%) - Delta Electronics (2308): 1,805 ▲110 (+6.16%) - Fubon Financial (2881): 123.5 ▲0.5 (+0.00%) - Cathay Financial (2882): 95 ▲1.1 (+1.28%)

Sector Performance

Sectors including semiconductor equipment, networking, PCBs, and aerospace & defense showed particularly strong performance, with multiple stocks surging to limit-up:

- Unimicron (3037): 825 ▲75 (+10.00%) - ChipMOS (3189): 746 ▲67 (+9.87%) - Laminated (6213): 354.5 ▲32 (+9.92%) - TMSC (2383): 4,830 ▲435 (+9.90%) - Advantech (2395): 567 ▲51 (+9.88%) - Wistron NeWeb (6414): 445.5 ▲40.5 (+10.00%) - Aerospace Industrial Development (2634): 71.5 ▲6.5 (+10.00%) - TransAsia Airways (2630): 58.9 ▲5.3 (+9.89%) - Lungteh Shipbuilding (6753): 153 ▲13.5 (+9.68%) - Formosa Chemicals & Fibre (6505): 85.4 ▲7.7 (+9.91%)

On the downside, some stocks faced heavy selling pressure and plunged to limit-down:

- Walsin Technology (2492): 251 ▼26 (-9.39%) - Epitech (6226): 18.3 ▼2 (-9.85%) - Lien Yu Metal - Chuan (7610): 1,955 ▼215 (-9.91%) - Chang Kuang (7795): 413.5 ▼36.5 (-9.53%)

FACT BOX

Source: PR Times
Category: News

Intraday Update: Unimicron and TMSC Surge to Limit-Up! Taiwan Stock Market Soars Nearly 1,500 Points, TSMC and MediaTek Fire Up

⚡ Key Points

Performance of Key Weighted Stocks

Sector Performance

FACT BOX

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