2303 TAI Week ended 07 Aug 2026

Weekly Investor Report

United Microelectronics Corporation · Technology · Semiconductors

Latest close 116.0 TWD
-4.1% latest week
Weekly setup

Mixed setup

The weekly trend is active. Price is 22.5% above the Trend Line and sits at 53.6% of its 52-week range. The latest completed week returned -4.1%, after a -25.6% four-week move. The latest news-sentiment score is 50/100. Near-term considerations: volume confirmation is below normal.

Setup score 49 out of 100
Latest Close 116.0 TWD 7 Aug 2026
1W Return -4.1% latest completed week
4W Return -25.6% short-term follow-through
12W Return 7.3% quarterly tape
Trend Breadth 80.8% 42 of 52 weeks active
Volume Ratio 0.9x vs 13-week average
What is working
  • The trend backdrop is active with a 42-week active streak.
  • Price is above the Trend Line, keeping the weekly tape constructive.
  • Price is above Fair Value, showing premium demand versus the model.
  • Activity pressure is constructive, supporting the smart-money activity read.
What could go wrong
  • Activity pressure is negative, which weakens the current setup.
  • The share remains more than 20% below its 52-week high.
  • Recent volatility is running well above the one-year baseline.
  • Latest weekly return ranks in the weaker part of its sector group.
What to watch next
  • Trend Line remains the key weekly regime level.
  • Activity pressure is the gauge to monitor for confirmation or fade.
  • A volume ratio above 1.5x would show stronger participation in the next move.
01 · Price action

Where price is—and whether the trend supports it

The weekly trend is active. Price is 22.5% above the Trend Line and sits at 53.6% of its 52-week range. The latest completed week returned -4.1%, after a -25.6% four-week move.

Study the full chart

52-week price path

Price vs Trend Line and Fair Value
Price Trend Line Fair Value
02 · Volume and demand

Is real participation confirming the move?

Latest weekly volume is 0.9x the 13-week average. Participation is below its recent norm, so price strength is not receiving full volume confirmation.

26-week volume confirmation

Bar height shows volume; colour shows the weekly price direction
6 Feb 13 Feb 27 Feb 6 Mar 13 Mar 20 Mar 27 Mar 3 Apr 10 Apr 17 Apr 24 Apr 1 May 8 May 15 May 22 May 29 May 5 Jun 12 Jun 19 Jun 26 Jun 3 Jul 10 Jul 17 Jul 24 Jul 31 Jul 7 Aug
Up week Down week
Demand beneath price

Activity pressure and institutional-style signals

These indicators assess whether participation is improving beneath the headline price move. They are supporting evidence, not proof of institutional buying.

Activity pressure path

Latest 0.9512-week average 0.92

12-week confirmation

Trend active12/12Active trend-backdrop weeks in the latest 12-week window.
Positive pressure11/12Weeks with constructive activity pressure in the latest 12-week window.
Positive leadership12/12Weeks with positive relative leadership in the latest 12-week window.
Activity pressure0.95Current proprietary activity-pressure read.
Buy signals0Accumulation signal count in the latest 12 weeks.
Reversal markers0No reversal markers

No recent accumulation markers. No reversal markers.

03 · Momentum and leadership

Is performance persistent—and is the stock leading?

Performance is -25.6% over four weeks, 7.3% over 12 weeks, and 186.7% over one year. The current trend has remained active for 42 consecutive weeks.

Performance by holding period

1W-4.1%
4W-25.6%
12W7.3%
26W89.1%
52W186.7%
Active trend streak42 weeks
Active weeks in one year42
Trend breadth80.8%

Activity pressure vs relative leadership

Activity pressureRelative leadership
Pressure-0.16Latest activity-pressure read.
Pressure change-111.5%Four-week change in activity pressure.
Leadership26.79Latest relative-leadership reading.
RS change-63.5%Four-week change in relative leadership.
04 · Fundamentals and valuation

What investors are paying for—and the quality behind it

A published fundamentals and factor snapshot is not available for this company.

Open full factor analysis

No published fundamental snapshot is available for this company.

05 · Ownership, options, and sentiment

What other market participants are doing

Options, insider transactions, market sentiment, and activity-pressure signals can confirm or challenge the price story. None should be used alone.

Insider activity-

No recent insider transactions are stored for this company.

News sentiment50/100

Weighted news tone is neutral across 0 relevant articles.

0 positive · 0 neutral · 0 negative
Patient CapitalQuiet

Activity-pressure buy-signal evidence highlights potential institutional accumulation windows.

No recent buy signal
06 · Catalysts and risk

What can move the shares—and how volatile the path has been

Event timing, options-implied movement, drawdown, and weekly return distribution frame the risk around the current setup.

Next earnings-No event is currently stored.
Options expected move-Nearest-chain priced movement where available.
52-week drawdown-36.4%Distance below the 52-week high.
13-week volatility11.4%Standard deviation of weekly returns.

Weekly gains and losses

Latest 26 completed weeks

Each bar is one week. Gains rise above the zero line; losses fall below it. Taller bars mean a larger weekly move.

Weeks higher14 of 2611 weeks finished lower.
Best week+26.8%Week of 29 May.
Worst week-11.1%Week of 24 Jul.
Latest week-4.1%Week of 7 Aug.

Shape of recent returns

Strong gains8
Modest gains6
Flat weeks1
Modest losses2
Sharp losses9
Recent vol11.4%13-week weekly-return volatility.
Base vol7.6%52-week weekly-return volatility.
Up/down split28/23Count of positive and negative weeks in the 52-week window.
Average skew7.3% / -3.6%Average positive week versus average negative week.
07 · Sector and peer context

Is this stock leading—or simply moving with its group?

Sector and industry breadth distinguish company-specific strength from a broad group move.

08 · Evidence and weekly data

The underlying research record

Every top-level statement above should be traceable to a stored market, fundamental, event, or positioning observation.

WeekCloseReturnTrend LineFair ValuePressureLeadershipVolumeTrend
7 Aug 2026116.0 TWD-4.1%94.70 TWD53.49 TWD-0.1626.791.1BOn
31 Jul 2026121.0 TWD-5.5%92.43 TWD53.01 TWD0.2336.791.1BOn
24 Jul 2026128.0 TWD-11.1%90.03 TWD52.49 TWD0.6744.25990.2MOn
17 Jul 2026144.0 TWD-7.7%87.43 TWD51.94 TWD1.1767.77594.6MOn
10 Jul 2026156.0 TWD-6.9%84.23 TWD51.29 TWD1.4273.50282.6MOn
3 Jul 2026167.6 TWD4.0%80.63 TWD50.56 TWD1.6283.48917.8MOn
26 Jun 2026161.2 TWD12.7%76.54 TWD49.76 TWD1.7388.301.9BOn
19 Jun 2026143.1 TWD9.0%72.64 TWD49.02 TWD1.7962.891.0BOn
12 Jun 2026131.3 TWD1.5%69.32 TWD48.37 TWD1.9559.001.8BOn
5 Jun 2026129.3 TWD-9.0%66.42 TWD47.80 TWD2.0555.161.8BOn
29 May 2026142.1 TWD26.8%63.63 TWD47.23 TWD2.0073.311.7BOn
22 May 2026112.1 TWD3.6%60.38 TWD46.59 TWD1.6546.441.2BOn
15 May 2026108.1 TWD20.5%58.15 TWD46.12 TWD1.3646.041.6BOn
8 May 202689.76 TWD18.1%56.04 TWD45.69 TWD1.0020.751.2BOn
How to use this report

This is a completed-week research summary. It explains the available evidence and its conflicts; it does not predict a guaranteed outcome or replace your own risk assessment. Fundamental figures may refer to an earlier financial reporting period, which is shown above.

Evidence context