TAIWAN news today: Unimicron Technology Corp. falls 5.8%, most stocks fall
Most TAIWAN stocks fall: 16 of 21 close lower on 20 October 2026. The biggest moves, new highs and lows and heavy trading come first, then the trading days before, from our own price and volume data.
Top story · Big move · 20 October 2026
Unimicron Technology Corp. (3037) falls 5.8% to TWD 1,055.00
Over 5 sessions it is down 10.6%.
Taiwan stocks
Most TAIWAN stocks fall: 16 of 21 close lower
On 20 October 2026, 4 of 21 stocks on TAIWAN we track closed higher, 16 closed lower and 1 were unchanged. The median change was −1.75%.
Biggest gains with trading behind them
- Wiwynn Corporation (6669)+2.12%
- Quanta Computer Inc. (2382)+1.91%
- Hon Hai Precision Industry Co., Ltd. (2317)+0.84%
Biggest falls with trading behind them
Latest moves on 20 October 2026
Moves on 19 October 2026
- Caliway Biopharmaceuticals Co., Ltd. (6919) closes at a 52-week low of TWD 75.00New low. Its third new 52-week low in 5 sessions. Down 8.1% over 20 sessions.−2.5%
- Chunghwa Telecom Co., Ltd. (2412) closes at a 52-week high of TWD 154.50New high. Its fifth new 52-week high in 5 sessions. Up 7.7% over 20 sessions.+1.0%
Moves on 16 October 2026
- Formosa Petrochemical Corporation (6505) closes at a 52-week high of TWD 122.50New high. Its third new 52-week high in 5 sessions. Up 47.8% over 20 sessions.+9.9%
- Asia Vital Components Co., Ltd. (3017) rises 7.1% to TWD 3,305.00Big move. Its biggest one-day rise in 4 weeks.+7.1%
- Cathay Financial Holding Co., Ltd. (2882) closes at a 52-week high of TWD 116.00New high. Up 5.5% over 20 sessions. The previous highest close was TWD 115.50 on 18 Jun 2026.+2.2%
- Fubon Financial Holding Co., Ltd. (2881) closes at a 52-week high of TWD 161.50New high. Its fourth new 52-week high in 5 sessions. Up 7.0% over 20 sessions.+1.3%
- CTBC Financial Holding Co., Ltd. (2891) closes at a 52-week high of TWD 73.60New high. Its second new 52-week high in 5 sessions. Up 5.6% over 20 sessions.+1.0%
- Chunghwa Telecom Co., Ltd. (2412) closes at a 52-week high of TWD 153.00New high. Its fourth new 52-week high in 5 sessions. Up 6.6% over 20 sessions.+0.3%
Moves on 15 October 2026
- Wiwynn Corporation (6669) tumbles 9.9% to TWD 1,905.00Big move. Its biggest one-day fall in at least a year, on 2.9 times its 20-day average volume.−9.9%
- ASE Technology Holding Co., Ltd. (3711) tumbles 9.9% to TWD 673.00Big move. Its biggest one-day fall in 3 months, on 2.6 times its 20-day average volume.−9.9%
- Nan Ya Plastics Corporation (1303) tumbles 9.9% to TWD 314.50Big move. Its biggest one-day fall in 3 months.−9.9%
- The Shanghai Commercial & Savings Bank, Ltd. (5876) closes at a 52-week high of TWD 53.40New high. Its third new 52-week high in 5 sessions. Up 7.0% over 20 sessions.+3.3%
- Chunghwa Telecom Co., Ltd. (2412) closes at a 52-week high of TWD 152.50New high. Its third new 52-week high in 5 sessions. Up 7.0% over 20 sessions.+2.7%
- CTBC Financial Holding Co., Ltd. (2891) closes at a 52-week high of TWD 72.90New high. Up 7.0% over 20 sessions. The previous highest close was TWD 72.40 on 23 Jun 2026.+2.1%
Moves on 14 October 2026
- Nan Ya Plastics Corporation (1303) closes at a 52-week high of TWD 349.00New high. Its third new 52-week high in 5 sessions. Up 48.8% over 20 sessions.+9.4%
- ITEQ Corporation (6213) closes at a 52-week high of TWD 856.00New high. Its fourth new 52-week high in 5 sessions. Up 68.2% over 20 sessions.+7.7%
- Tripod Technology Corporation (3044) closes at a 52-week high of TWD 603.00New high. Its second new 52-week high in 5 sessions. Up 18.7% over 20 sessions.+5.4%
- Taiwan Mobile Co., Ltd. (3045) closes at a 52-week high of TWD 126.50New high. Its second new 52-week high in 5 sessions. Up 4.5% over 20 sessions.+1.2%
- Chunghwa Telecom Co., Ltd. (2412) closes at a 52-week high of TWD 148.50New high. Its second new 52-week high in 5 sessions. Up 5.7% over 20 sessions.+0.3%
- Fubon Financial Holding Co., Ltd. (2881) closes at a 52-week high of TWD 160.50New high. Its fourth new 52-week high in 5 sessions. Up 8.1% over 20 sessions.+0.3%
Moves on 13 October 2026
- Elite Material Co., Ltd. (2383) tumbles 9.8% to TWD 5,545.00Big move. Its biggest one-day fall in 3 months, on 2.0 times its 20-day average volume.−9.8%
- Formosa Petrochemical Corporation (6505) closes at a 52-week high of TWD 119.00New high. Its fourth new 52-week high in 5 sessions. Up 36.0% over 20 sessions.+7.7%
- Nanya Technology Corporation (2408) falls 7.4% to TWD 488.00Big move. Its biggest one-day fall in 6 weeks, on 2.2 times its 20-day average volume.−7.4%
- Nan Ya Plastics Corporation (1303) closes at a 52-week high of TWD 319.00New high. Its third new 52-week high in 5 sessions. Up 30.7% over 20 sessions.+5.3%
- Chunghwa Telecom Co., Ltd. (2412) closes at a 52-week high of TWD 148.00New high. Up 6.1% over 20 sessions. The previous highest close was TWD 146.50 on 8 Oct 2026.+1.0%
- Fubon Financial Holding Co., Ltd. (2881) closes at a 52-week high of TWD 160.00New high. Its third new 52-week high in 5 sessions. Up 7.7% over 20 sessions.+0.9%
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