- The trend backdrop is active with a 10-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 positive on the latest completed week.
4306
TAI
Week ended 14 Aug 2026
Weekly Investor Report
Yem Chio Co., Ltd. · Basic Materials · Specialty Chemicals
Latest close
15.50 TWD
7.3%
latest week
Weekly setup
Constructive, but selective
The weekly trend is active. Price is 13.3% above the Trend Line and sits at 90.6% of its 52-week range. The latest completed week returned 7.3%, after a 5.1% four-week move. The latest news-sentiment score is 50/100. Near-term considerations: price is close to its 52-week high; volume confirmation is below normal.
Setup score
48
out of 100
Latest Close
15.50 TWD
14 Aug 2026
1W Return
7.3%
latest completed week
4W Return
5.1%
short-term follow-through
12W Return
15.5%
quarterly tape
Trend Breadth
19.2%
10 of 52 weeks active
Volume Ratio
0.8x
vs 13-week average
- Recent volatility is running well above the one-year baseline.
- Price is close to its 52-week high; watch for continuation or exhaustion.
- 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.
Price follow-through
7.3%
Latest completed week; four-week move 5.1%.
Indicator stack
45/51
Trend and activity pressure are weighted against the latest 12-week confirmation window.
Trend backdrop
Active
The trend backdrop defines the current weekly regime.
Patient Capital
Quiet
Activity-pressure buy-signal status for institutional accumulation timing.
News sentiment
50/100
0 relevant articles in the latest sentiment read.
01 · Price action
Study the full chart
Where price is—and whether the trend supports it
The weekly trend is active. Price is 13.3% above the Trend Line and sits at 90.6% of its 52-week range. The latest completed week returned 7.3%, after a 5.1% four-week move.
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 0.8x 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
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
14 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 0.8512-week average 0.50
12-week confirmation
Trend active10/12Active trend-backdrop weeks in the latest 12-week window.
Positive pressure12/12Weeks with constructive activity pressure in the latest 12-week window.
Positive leadership0/12Weeks with positive relative leadership in the latest 12-week window.
Activity pressure0.85Current proprietary activity-pressure read.
Buy signals1Accumulation 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 5.1% over four weeks, 15.5% over 12 weeks, and 14.6% over one year. The current trend has remained active for 10 consecutive weeks.
Performance by holding period
Active trend streak10 weeks
Active weeks in one year10
Trend breadth19.2%
Activity pressure vs relative leadership
Activity pressureRelative leadership
Pressure0.38Latest activity-pressure read.
Pressure change-67.5%Four-week change in activity pressure.
Leadership-18.38Latest relative-leadership reading.
RS change9.6%Four-week change in relative leadership.
04 · Fundamentals and valuation
Open full factor analysis
What investors are paying for—and the quality behind it
A published fundamentals and factor snapshot is not available for this company.
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 negativePatient 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-2.2%Distance below the 52-week high.
13-week volatility4.1%Standard deviation of weekly returns.
Weekly gains and losses
Latest 26 completed weeksEach bar is one week. Gains rise above the zero line; losses fall below it. Taller bars mean a larger weekly move.
13 Feb
20 Mar
17 Apr
15 May
12 Jun
10 Jul
14 Aug
Weeks higher14 of 2611 weeks finished lower.
Best week+7.7%Week of 12 Jun.
Worst week-6.3%Week of 10 Jul.
Latest week+7.3%Week of 14 Aug.
Shape of recent returns
Strong gains5
Modest gains9
Flat weeks1
Modest losses10
Sharp losses1
Recent vol4.1%13-week weekly-return volatility.
Base vol2.6%52-week weekly-return volatility.
Up/down split23/23Count of positive and negative weeks in the 52-week window.
Average skew2.4% / -1.7%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.
SectorTW Basic Materials
4-week rank22 / 100
Group average-0.1%
Trend breadth39.0%
Trend39.0%active weekly trend signals
MD42.0%positive activity pressure
RS10.0%positive relative leadership
Four-week leaders
IndustryTW Specialty Chemicals
4-week rank16 / 64
Group average0.4%
Trend breadth37.5%
Trend37.5%active weekly trend signals
MD26.6%positive activity pressure
RS9.4%positive relative leadership
Four-week leaders
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.
Weekly tape44/100
Trend, activity pressure, participation, and risk combine to a 44/100 tape read.
Indicator analysis66/100Latest 12-week confirmation: trend 10/12, activity pressure 12/12, relative leadership 0/12.
Activity pressure 0.85; No reversal markers Factors50/100No published factor snapshot is available yet.
Patient CapitalQuietActivity-pressure buy-signal evidence highlights potential institutional accumulation windows.
No recent buy signal Sentiment50/100Weighted news tone is neutral across 0 relevant articles.
Insiders50/100No recent insider transaction evidence is stored.
Earnings50/100No stored earnings event is currently attached to this ticker.
| Week | Close | Return | Trend Line | Fair Value | Pressure | Leadership | Volume | Trend |
|---|---|---|---|---|---|---|---|---|
| 14 Aug 2026 | 15.50 TWD | 7.3% | 13.69 TWD | 14.67 TWD | 0.38 | -18.38 | 7.5M | On |
| 7 Aug 2026 | 14.45 TWD | 0.7% | 13.62 TWD | 14.65 TWD | 0.42 | -22.00 | 2.8M | On |
| 31 Jul 2026 | 14.35 TWD | -1.7% | 13.60 TWD | 14.64 TWD | 0.56 | -21.49 | 6.0M | On |
| 24 Jul 2026 | 14.60 TWD | -1.0% | 13.57 TWD | 14.62 TWD | 0.89 | -22.03 | 4.7M | On |
| 17 Jul 2026 | 14.75 TWD | -0.3% | 13.54 TWD | 14.61 TWD | 1.17 | -20.33 | 9.1M | On |
| 10 Jul 2026 | 14.80 TWD | -6.3% | 13.50 TWD | 14.59 TWD | 1.37 | -25.64 | 0 | On |
| 3 Jul 2026 | 15.80 TWD | 4.1% | 13.45 TWD | 14.58 TWD | 1.63 | -23.98 | 10.5M | On |
| 26 Jun 2026 | 15.18 TWD | 0.3% | 13.35 TWD | 14.56 TWD | 1.69 | -24.27 | 10.2M | On |
| 19 Jun 2026 | 15.13 TWD | -1.6% | 13.26 TWD | 14.54 TWD | 1.69 | -28.46 | 11.3M | On |
| 12 Jun 2026 | 15.37 TWD | 7.7% | 13.18 TWD | 14.52 TWD | 1.67 | -24.49 | 19.9M | On |
| 5 Jun 2026 | 14.27 TWD | 6.4% | 13.09 TWD | 14.51 TWD | 1.14 | -32.15 | 15.9M | Off |
| 29 May 2026 | 13.42 TWD | 0.0% | 13.03 TWD | 14.50 TWD | 0.49 | -36.67 | 8.6M | Off |
| 22 May 2026 | 13.42 TWD | 5.6% | 13.02 TWD | 14.49 TWD | -0.12 | -33.96 | 10.5M | Off |
| 15 May 2026 | 12.70 TWD | 1.1% | 13.01 TWD | 14.49 TWD | -0.65 | -36.70 | 5.3M | Off |
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.