Stock listing
TWSE:5434 Topco Scientific Co., Ltd. (崇越) 股價
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Share price · TWSE:5434
$559.00 TWD +8.00 (+1.5%)
Close on Oct 30, 2026
- Day range
- $552.00 – $578.00 TWDOct 30, 2026
- Volume
- 1.33M sharesOct 30, 2026
- Market cap
- $108.5B TWDAt the close on Oct 30, 2026 · price × 194.0M shares outstanding
- 52-week range
- $286.00 – $634.00 TWDLowest and highest trades, Oct 31, 2025 – Oct 30, 2026
- Traded on an average day
- $391.9M TWDMedian day 574,816 shares · 1 day with no trades · last 3 months, Jul 30, 2026 – Oct 30, 2026
Daily closes
Last 3 months, Jul 30, 2026 – Oct 30, 2026 · TWSE:5434 · TWD, adjusted for splits
| Day | Close | Change | % | Open | High | Low | Volume |
|---|---|---|---|---|---|---|---|
| $559.00 | +8.00 | +1.5% | $561.00 | $578.00 | $552.00 | 1,326,697 | |
| $551.00 | -9.00 | -1.6% | $560.00 | $562.00 | $548.00 | 252,053 | |
| $560.00 | +14.00 | +2.6% | $562.00 | $565.00 | $555.00 | 296,642 | |
| $546.00 | -4.00 | -0.7% | $555.00 | $563.00 | $539.00 | 1,280,551 | |
| $550.00 | 0.00 | 0.0% | $550.00 | $550.00 | $550.00 | 0 | |
| $550.00 | -23.00 | -4.0% | $573.00 | $577.00 | $550.00 | 1,051,127 | |
| $573.00 | +12.00 | +2.1% | $572.00 | $578.00 | $569.00 | 574,816 | |
| $561.00 | -9.00 | -1.6% | $563.00 | $574.00 | $558.00 | 375,691 | |
| $570.00 | -6.00 | -1.0% | $566.00 | $576.00 | $562.00 | 507,862 | |
| $576.00 | 0.00 | 0.0% | $576.00 | $588.00 | $575.00 | 404,600 | |
| $576.00 | -20.00 | -3.4% | $583.00 | $588.00 | $571.00 | 707,220 | |
| $596.00 | +1.00 | +0.2% | $594.00 | $608.00 | $594.00 | 440,058 | |
| $595.00 | +2.00 | +0.3% | $585.00 | $603.00 | $581.00 | 488,613 | |
| $593.00 | -3.00 | -0.5% | $590.00 | $594.00 | $586.00 | 351,213 | |
| $596.00 | -9.00 | -1.5% | $601.00 | $602.00 | $593.00 | 498,776 | |
| $605.00 | -14.00 | -2.3% | $630.00 | $634.00 | $600.00 | 790,343 | |
| $619.00 | -1.00 | -0.2% | $620.00 | $633.00 | $613.00 | 1,094,774 | |
| $620.00 | +37.00 | +6.3% | $598.00 | $623.00 | $593.00 | 1,481,420 | |
| $583.00 | +16.00 | +2.8% | $571.00 | $585.00 | $568.00 | 1,032,927 | |
| $567.00 | +12.00 | +2.2% | $556.00 | $567.00 | $550.00 | 715,871 | |
| $555.00 | +15.00 | +2.8% | $550.00 | $565.00 | $547.00 | 1,003,263 | |
| $540.00 | -2.00 | -0.4% | $539.00 | $545.00 | $538.00 | 378,203 | |
| $542.00 | 0.00 | 0.0% | $543.00 | $543.00 | $536.00 | 219,214 | |
| $542.00 | +8.00 | +1.5% | $537.00 | $545.00 | $537.00 | 487,509 | |
| $534.00 | -3.00 | -0.6% | $544.00 | $547.00 | $531.00 | 505,433 | |
| $537.00 | -3.00 | -0.6% | $540.00 | $543.00 | $533.00 | 358,536 | |
| $540.00 | +10.00 | +1.9% | $535.00 | $545.00 | $532.00 | 801,211 | |
| $530.00 | -7.00 | -1.3% | $545.00 | $545.00 | $529.00 | 535,288 | |
| $537.00 | 0.00 | 0.0% | $542.00 | $553.00 | $533.00 | 699,276 | |
| $537.00 | -2.00 | -0.4% | $539.00 | $540.00 | $530.00 | 413,758 | |
| $539.00 | +12.00 | +2.3% | $524.00 | $547.00 | $518.00 | 706,610 | |
| $527.00 | 0.00 | 0.0% | $520.00 | $533.00 | $518.00 | 406,484 | |
| $527.00 | -8.00 | -1.5% | $530.00 | $531.00 | $523.00 | 342,463 | |
| $535.00 | +3.00 | +0.6% | $532.00 | $544.00 | $532.00 | 480,213 | |
| $532.00 | -9.00 | -1.7% | $546.00 | $546.00 | $529.00 | 555,387 | |
| $541.00 | +3.00 | +0.6% | $548.00 | $549.00 | $539.00 | 418,299 | |
| $538.00 | +11.00 | +2.1% | $543.00 | $547.00 | $528.00 | 628,335 | |
| $527.00 | -8.00 | -1.5% | $536.00 | $544.00 | $527.00 | 681,526 | |
| $535.00 | -5.00 | -0.9% | $535.00 | $540.00 | $530.00 | 502,168 | |
| $540.00 | +25.00 | +4.9% | $518.00 | $545.00 | $518.00 | 985,146 | |
| $515.00 | -14.00 | -2.6% | $525.00 | $525.00 | $507.00 | 879,626 | |
| $529.00 | -4.00 | -0.8% | $533.00 | $540.00 | $529.00 | 268,330 | |
| $533.00 | -3.00 | -0.6% | $536.00 | $542.00 | $530.00 | 420,258 | |
| $536.00 | +15.00 | +2.9% | $521.00 | $537.00 | $517.00 | 499,699 | |
| $521.00 | 0.00 | 0.0% | $516.00 | $521.00 | $506.00 | 321,032 | |
| $521.00 | +8.00 | +1.6% | $513.00 | $525.00 | $513.00 | 333,299 | |
| $513.00 | -13.00 | -2.5% | $526.00 | $526.00 | $511.00 | 616,233 | |
| $526.00 | -4.00 | -0.8% | $538.00 | $538.00 | $516.00 | 844,373 | |
| $530.00 | -23.00 | -4.2% | $542.00 | $565.00 | $528.00 | 1,577,553 | |
| $553.00 | +37.00 | +7.2% | $539.00 | $567.00 | $523.00 | 2,722,188 | |
| $516.00 | -5.00 | -1.0% | $520.00 | $525.00 | $513.00 | 419,325 | |
| $521.00 | -6.00 | -1.1% | $532.00 | $532.00 | $521.00 | 389,016 | |
| $527.00 | -5.00 | -0.9% | $538.00 | $539.00 | $526.00 | 504,656 | |
| $532.00 | +10.00 | +1.9% | $534.00 | $543.00 | $525.00 | 1,029,295 | |
| $522.00 | +8.00 | +1.6% | $514.00 | $533.00 | $509.00 | 900,358 | |
| $514.00 | +15.00 | +3.0% | $500.00 | $527.00 | $500.00 | 661,258 | |
| $499.00 | -10.00 | -2.0% | $507.00 | $515.00 | $498.00 | 747,095 | |
| $509.00 | -3.00 | -0.6% | $512.00 | $513.00 | $495.00 | 1,094,441 | |
| $512.00 | +3.00 | +0.6% | $523.00 | $532.00 | $509.00 | 1,189,320 | |
| $509.00 | +3.00 | +0.6% | $508.00 | $522.00 | $507.00 | 1,233,109 | |
| $506.00 | +6.00 | +1.2% | $505.00 | $521.00 | $498.00 | 962,258 | |
| $500.00 | +24.50 | +5.2% | $505.00 | $516.00 | $498.50 | 1,755,856 | |
| $475.50 | -16.00 | -3.3% | $488.00 | $496.00 | $473.00 | 1,426,537 |
- Ticker
- TWSE:5434
- Asset type
- Stock
- Exchange
- TWSE
- Currency
- TWD
What changed lately
Latest news release · Aug 31, 2026
Accelerating "Photonics-over-Copper" Trend: TOPCO and SCIVAX Target Mass Production of CPO Optical Components
Latest deck · Aug 17, 2026
Q2 2026 Earnings Presentation
Earnings · 25 slides
Latest news
Accelerating "Photonics-over-Copper" Trend: TOPCO and SCIVAX Target Mass Production of CPO Optical Components
Aug 31, 2026
Closed $540.00 (+4.9%) on Sep 1, 2026
Showcases Advanced Packaging Thermal Management, CPO and Energy-Saving Equipment Integration Capabilities at SEMICON Taiwan
Aug 24, 2026
Closed $521.00 (+1.6%) on Aug 24, 2026
Topco Scientific Reports Record July Revenue Exceeding NT$8 Billion for the First Time
Aug 10, 2026
Closed $514.00 (+3.0%) on Aug 10, 2026
Topco Scientific Reports Record H1 2026 EPS of NT$14.79; Q2 Revenue Exceeds NT$20 Billion for the First Time
Aug 3, 2026
Closed $506.00 (+1.2%) on Aug 3, 2026
Kumamoto Earthquake Tests Semiconductor Supply Chain Resilience;Topco Scientific Ensures Uninterrupted Supply Through Multi-SiteBackup Operations
Jul 29, 2026
Closed $475.50 (-3.3%) on Jul 30, 2026
Topco Scientific Hits Record High of NT$7.51 Billion in June, Driven by Surging Performance in Advanced Materials and Environmental Engineering
Jul 9, 2026
Closed $509.00 (0.0%) on Jul 10, 2026
Topco Scientific Posts Third-Highest Monthly Revenue in May; Revenue for First Five Months Exceeds NT$31.85 Billion, Setting Another Record High
Jun 8, 2026
Closed $456.00 (+4.2%) on Jun 9, 2026
Topco Scientific Reports April Revenue of NT$6.78 Billion, Marking the Second-Highest on Record; Cumulative Revenue Surges 17.3% YoY to NT$25.31 Billion
May 11, 2026
Closed $423.50 (-1.7%) on May 12, 2026
Topco Q1 Earnings Hit New Milestone: Record EPS of NT$6.86 as Net Profit Surges Over 40%
May 7, 2026
Closed $423.00 (+1.1%) on May 8, 2026
Topco Scientific Reports Record March Revenue of NT$7.01 Billion, with Q1 Revenue Reaching All-Time High of NT$18.54 Billion
Apr 9, 2026
Closed $401.00 (+9.7%) on Apr 10, 2026
Decks
Q2 2026 Earnings Presentation
Earnings · 25 slides · Aug 17, 2026
Q2 2026 Earnings Presentation
Earnings · 26 slides · Aug 17, 2026
Q1 2026 Earnings Presentation
Earnings · 21 slides · May 21, 2026
Q1 2026 Earnings Presentation
Earnings · 20 slides · May 21, 2026
Topco Scientific Co., Ltd. on 6ix
- News releases
- 12 in the last 12 months · 24 in all · newest Aug 31, 2026 · oldest 2024
- Decks
- 20 decks · latest Aug 17, 2026
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