After-Hours Market Update: Taiwan Stock Index Soars 1783 Points! Who’s Driving the Rally? AI, Semiconductors, and MediaTek Lead the Charge

Today, Taiwan's stock market demonstrated strong rebound momentum, with the main index opening higher and continuing to climb. Led by major electronic heavyweight stocks, the weighted index closed sharply higher, showing a clear pattern of rising prices and volumes compared to yesterday. Across the board, various sectors surged, with semiconductors, AI servers, and related components taking the lead on the bullish side. Key blue-chip stocks such as TSMC, MediaTek, and Hon Hai delivered impressive gains. Additionally, traditional sectors like petrochemicals and aerospace & defense saw renewed investor interest, contributing to overall market stability. The number of advancing stocks significantly outnumbered decliners, confirming a clear bullish market sentiment.

Date: 2026/07/21 Opening: 42,566.93 Closing: 44,232.87 Price & Change: 44,232.87 ▲1783.17 (+4.20%)

Strong Sectors Today’s market strength was concentrated in semiconductors, AI server supply chains, and aerospace & defense. Benefiting from leadership by large-cap stocks, buying interest surged in electronic components and semiconductor equipment manufacturers, with trading volume significantly expanding. Meanwhile, the petrochemical sector, after a deep correction, also saw a strong rebound, becoming another stabilizing force supporting the market.

Weak Sectors Against the backdrop of a broad market rally, weak sectors were relatively scattered. A few green energy, environmental protection, biotech, healthcare, and certain optoelectronic stocks weakened due to profit-taking or lack of buying interest, showing an inverse downtrend.

Top Gainers Today’s top-performing stocks were concentrated in aerospace & defense, semiconductor equipment, and high-priced electronics, with multiple stocks hitting their daily trading limits. This reflects strong investor appetite for chasing gains, with sub-sectors showing high activity.

Hanshin (2634): 71.5 ▲6.5 (+10.00%) Unimicron (3037): 825 ▲75 (+10.00%) Jen-Tex (3653): 3520 ▲320 (+10.00%) Tai Tsung (4169): 280.5 ▲25.5 (+10.00%) Adlink (6166): 132 ▲12 (+10.00%) Wistron (6414): 445.5 ▲40.5 (+10.00%) Winway (6515): 6655 ▲605 (+10.00%) APlus (6531): 858 ▲78 (+10.00%) Avalue (3479): 148.5 ▲13.5 (+10.00%) Fuh Yuh (4513): 21.45 ▲1.95 (+10.00%)

Top Losers Today’s biggest decliners were mostly individual stocks undergoing thematic corrections, including certain biotech, green energy, and specific traditional stocks facing significant profit-taking or adjustment selling pressure.

Gomaji (8472): 70.8 ▼7.8 (-9.92%) HaiChang Biotech (7814): 34.05 ▼3.75 (-9.92%) Lien Yu Metal-KY (7610): 1955 ▼215 (-9.91%) Pan Ya (4707): 32.85 ▼3.6 (-9.87%) Lite-On (6226): 18.3 ▼2 (-9.85%) DigiPower (3288): 26.45 ▼2.85 (-9.72%) Chung Fu (1435): 18.7 ▼1.95 (-9.44%) Chang Kuang (7795): 415.5 ▼41 (-8.98%) Leshi Green Energy (1529): 18.6 ▼1.8 (-8.82%) Taishan (1615): 43.1 ▼3.45 (-7.41%)

Top 10 Volume Stocks Innolux (3481): 50.7 ▲0.3 (+0.60%) 316,706 shares UMC (2303): 134.5 ▲4.5 (+3.46%) 259,516 shares AUO (2409): 25.6 ▲0.2 (+0.79%) 154,571 shares Powerchip (6770): 65.1 ▲2.1 (+3.33%) 126,208 shares Nan Ya Plastics (1303): 195.5 ▲9 (+4.83%) 121,882 shares Winbond (2344): 155.5 ▲4.5 (+2.98%) 104,120 shares Yageo (2327): 670 ▲40 (+6.35%) 94,729 shares Hanshin (2634): 71.5 ▲6.5 (+10.00%) 92,633 shares Taiwan Shin Kong Financial (2887): 34.7 ▼0.45 (-1.28%) 81,876 shares Nanya Technology (8150): 104 ▲1 (+0.97%) 76,354 shares

Near-Hit Limit Up Stocks Nan Wei (1467): 10.5 ▲0.93 (+9.72%) Union Chemical (1710): 16.95 ▲1.5 (+9.71%) Hocker (1810): 31.05 ▲2.8 (+9.91%) Kinpo (2312): 33.1 ▲3 (+9.97%) Chroma (2360): 2015 ▲180 (+9.81%) Tatung (2383): 4830 ▲435 (+9.90%) Advantech (2395): 567 ▲51 (+9.88%) MediaTek (2454): 3670 ▲330 (+9.88%) Youngbow (2493): 238.5 ▲21.5 (+9.91%) TransAsia (2630): 58.9 ▲5.3 (+9.89%) Hanshin (2634): 71.5 ▲6.5 (+10.00%) Tong Ling (2910): 28.3 ▲2.55 (+9.90%) IEI Integration (3022): 86.1 ▲7.8 (+9.96%) Hoshint (3026): 682 ▲61 (+9.82%) Unimicron (3037): 825 ▲75 (+10.00%) Kinsus (3189): 746 ▲67 (+9.87%) Taisol (3338): 69.1 ▲6.2 (+9.86%) Fusion (3416): 175 ▲15.5 (+9.72%) Creativity (3443): 4115 ▲370 (+9.88%) Lumus (3450): 427.5 ▲38.5 (+9.90%) Hongtze (3605): 84.4 ▲7.6 (+9.90%) Jen-Tex (3653): 3520 ▲320 (+10.00%) MegaX (3665): 2000 ▲180 (+9.89%) Haiwa (3694): 66.3 ▲6 (+9.95%) Tai Tsung (4169): 280.5 ▲25.5 (+10.00%) Shuang Jian (4764): 293 ▲26.5 (+9.94%) Sincere Tech (4916): 107 ▲9.3 (+9.52%) Adlink (6166): 132 ▲12 (+10.00%) Lamtec (6213): 354.5 ▲32 (+9.92%) Sunjet (6243): 51 ▲4.55 (+9.80%) Wistron (6414): 445.5 ▲40.5 (+10.00%) Richtek (6416): 99.4 ▲9 (+9.96%) Feeltone (6451): 435 ▲39.5 (+9.99%) Formosa Chemicals (6505): 85.4 ▲7.7 (+9.91%) Winway (6515): 6655 ▲605 (+10.00%) APlus (6531): 858 ▲78 (+10.00%) Aaeon (6579): 163.5 ▲14.5 (+9.73%) Chipbond (6695): 57.5 ▲5.2 (+9.94%) Longde Shipbuilding (6753): 153 ▲13.5 (+9.68%) Cheng Shin Industrial-KY (6969): 29 ▲2.6 (+9.90%) Taiwan High Polymer (8039): 212 ▲19 (+9.84%) Linxon (8105): 17.65 ▲1.6 (+9.97%) Zhen Hua (8114): 201 ▲18 (+9.84%) Pao Yi (8222): 41.55 ▲3.75 (+9.92%) Tai Han (1336): 16.65 ▲1.5 (+9.90%) Axiomtek (3088): 138.5 ▲12.5 (+9.92%) Tatung (3147): 228.5 ▲20.5 (+9.85%) Chin Ming (3230): 47.25 ▲4.25 (+9.88%) EpiValley (3374): 380 ▲34.5 (+9.98%) Avalue (3479): 148.5 ▲13.5 (+10.00%) ICP (3577): 157 ▲14 (+9.79%) Kang Luen (3672): 13.85 ▲1.25 (+9.92%) ChipMOS (3680): 481 ▲43.5 (+9.94%) Fuh Yuh (4513): 21.45 ▲1.95 (+10.00%) Seng Tian (4541): 75.7 ▲6.8 (+9.86%) Kotech (4542): 324.5 ▲29