Stock listing
TWSE:3030 Test Research, Inc. (德律) 股價
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Share price · TWSE:3030
$252.00 TWD -17.00 (-6.3%)
Close on Oct 30, 2026
- Day range
- $247.00 – $262.00 TWDOct 30, 2026
- Volume
- 2.27M sharesOct 30, 2026
- Market cap
- $59.53B TWDAt the close on Oct 30, 2026 · price × 236.2M shares outstanding
- 52-week range
- $139.50 – $457.50 TWDLowest and highest trades, Oct 31, 2025 – Oct 30, 2026
- Traded on an average day
- $380.9M TWDMedian day 1.03M 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:3030 · TWD, adjusted for splits
| Day | Close | Change | % | Open | High | Low | Volume |
|---|---|---|---|---|---|---|---|
| $252.00 | -17.00 | -6.3% | $261.00 | $262.00 | $247.00 | 2,268,298 | |
| $269.00 | -7.50 | -2.7% | $275.00 | $277.00 | $266.00 | 901,000 | |
| $276.50 | +17.50 | +6.8% | $266.50 | $278.50 | $265.00 | 1,740,523 | |
| $259.00 | -4.00 | -1.5% | $269.00 | $269.50 | $259.00 | 1,430,524 | |
| $263.00 | 0.00 | 0.0% | $263.00 | $263.00 | $263.00 | 0 | |
| $263.00 | -14.00 | -5.1% | $279.50 | $280.00 | $263.00 | 1,602,158 | |
| $277.00 | -3.00 | -1.1% | $284.50 | $287.50 | $276.00 | 1,017,048 | |
| $280.00 | -8.00 | -2.8% | $283.00 | $291.50 | $279.50 | 1,966,115 | |
| $288.00 | -1.50 | -0.5% | $282.00 | $291.50 | $278.00 | 1,513,844 | |
| $289.50 | +4.50 | +1.6% | $290.00 | $296.00 | $286.00 | 1,136,291 | |
| $285.00 | -22.00 | -7.2% | $300.50 | $301.50 | $284.50 | 1,938,869 | |
| $307.00 | +1.00 | +0.3% | $312.00 | $312.00 | $306.50 | 1,022,209 | |
| $306.00 | -10.00 | -3.2% | $312.50 | $318.00 | $304.00 | 1,978,271 | |
| $316.00 | +2.50 | +0.8% | $315.00 | $322.00 | $313.50 | 3,194,345 | |
| $313.50 | 0.00 | 0.0% | $311.00 | $316.00 | $307.00 | 2,164,055 | |
| $313.50 | +5.50 | +1.8% | $306.00 | $317.00 | $302.50 | 2,858,924 | |
| $308.00 | +2.50 | +0.8% | $310.00 | $318.00 | $307.50 | 5,129,519 | |
| $305.50 | +5.50 | +1.8% | $309.50 | $312.00 | $302.00 | 3,360,715 | |
| $300.00 | +11.00 | +3.8% | $283.00 | $301.00 | $277.00 | 3,840,193 | |
| $289.00 | +10.00 | +3.6% | $281.50 | $290.00 | $278.50 | 1,603,726 | |
| $279.00 | +3.00 | +1.1% | $279.00 | $284.50 | $275.00 | 939,425 | |
| $276.00 | +6.00 | +2.2% | $270.50 | $280.50 | $269.00 | 1,381,017 | |
| $270.00 | +5.50 | +2.1% | $264.00 | $270.00 | $261.50 | 436,234 | |
| $264.50 | -3.50 | -1.3% | $270.50 | $272.00 | $263.50 | 613,162 | |
| $268.00 | -0.50 | -0.2% | $272.00 | $273.00 | $267.00 | 548,061 | |
| $268.50 | +1.50 | +0.6% | $268.50 | $272.00 | $267.50 | 357,000 | |
| $267.00 | +3.00 | +1.1% | $269.00 | $269.00 | $265.50 | 489,079 | |
| $264.00 | +1.50 | +0.6% | $268.00 | $268.00 | $264.00 | 413,295 | |
| $262.50 | +4.00 | +1.5% | $260.50 | $263.50 | $259.50 | 301,100 | |
| $258.50 | -0.50 | -0.2% | $258.50 | $262.00 | $258.50 | 361,640 | |
| $259.00 | -4.00 | -1.5% | $263.00 | $263.00 | $258.00 | 542,279 | |
| $263.00 | -3.50 | -1.3% | $264.50 | $264.50 | $261.00 | 589,557 | |
| $266.50 | -4.50 | -1.7% | $271.00 | $272.00 | $266.00 | 693,557 | |
| $271.00 | +1.00 | +0.4% | $272.00 | $276.50 | $270.50 | 635,221 | |
| $270.00 | -12.00 | -4.3% | $277.00 | $278.00 | $268.50 | 1,693,796 | |
| $282.00 | -2.00 | -0.7% | $284.00 | $285.50 | $281.00 | 812,682 | |
| $284.00 | -9.50 | -3.2% | $299.50 | $300.50 | $278.50 | 2,575,510 | |
| $293.50 | +5.00 | +1.7% | $292.00 | $306.50 | $287.50 | 2,674,488 | |
| $288.50 | -9.00 | -3.0% | $293.50 | $294.50 | $288.00 | 1,079,710 | |
| $297.50 | +7.00 | +2.4% | $294.00 | $304.50 | $294.00 | 1,342,453 | |
| $290.50 | -3.00 | -1.0% | $295.00 | $297.50 | $285.00 | 642,394 | |
| $293.50 | -3.00 | -1.0% | $298.50 | $299.50 | $292.50 | 667,004 | |
| $296.50 | +8.00 | +2.8% | $289.50 | $300.50 | $289.00 | 804,680 | |
| $288.50 | +6.00 | +2.1% | $285.00 | $290.50 | $282.00 | 493,138 | |
| $282.50 | +1.00 | +0.4% | $284.00 | $284.00 | $273.50 | 662,300 | |
| $281.50 | -3.50 | -1.2% | $287.00 | $290.00 | $281.00 | 493,212 | |
| $285.00 | -4.50 | -1.6% | $289.50 | $290.50 | $283.50 | 509,770 | |
| $289.50 | +4.50 | +1.6% | $288.50 | $290.00 | $282.00 | 736,305 | |
| $285.00 | -4.50 | -1.6% | $283.00 | $290.50 | $281.00 | 754,030 | |
| $289.50 | -10.00 | -3.3% | $298.50 | $301.50 | $289.50 | 738,323 | |
| $299.50 | +4.50 | +1.5% | $294.50 | $301.00 | $292.50 | 708,617 | |
| $295.00 | -8.50 | -2.8% | $307.00 | $307.00 | $293.00 | 1,034,040 | |
| $303.50 | -4.00 | -1.3% | $309.00 | $313.50 | $303.00 | 1,183,101 | |
| $307.50 | +5.00 | +1.7% | $302.50 | $311.00 | $302.50 | 1,650,912 | |
| $302.50 | +6.00 | +2.0% | $297.50 | $304.50 | $294.00 | 1,535,939 | |
| $296.50 | +6.50 | +2.2% | $295.00 | $302.50 | $293.00 | 1,036,202 | |
| $290.00 | -5.50 | -1.9% | $298.00 | $301.00 | $288.00 | 1,018,143 | |
| $295.50 | -2.00 | -0.7% | $297.50 | $298.50 | $288.50 | 962,345 | |
| $297.50 | +1.00 | +0.3% | $304.00 | $309.00 | $297.00 | 1,363,482 | |
| $296.50 | +10.00 | +3.5% | $296.50 | $304.00 | $291.00 | 1,897,177 | |
| $286.50 | +18.00 | +6.7% | $266.50 | $292.50 | $266.00 | 1,510,340 | |
| $268.50 | +19.50 | +7.8% | $267.00 | $273.00 | $265.00 | 1,436,850 | |
| $249.00 | -6.00 | -2.4% | $252.00 | $261.00 | $245.00 | 1,975,333 |
- Ticker
- TWSE:3030
- Asset type
- Stock
- Exchange
- TWSE
- Currency
- TWD
What changed lately
Latest news release · Aug 26, 2026
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Test Research, Inc. on 6ix
- News releases
- 25 in the last 12 months · 25 in all · newest Aug 26, 2026 · oldest 2025
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