6815 TWO Week ended 14 Aug 2026

Weekly Investor Report

Diamond Biotechnology Co., Ltd · Healthcare · Medical Devices

Latest close 24.95 TWD
2.7% latest week
Weekly setup

Weak trend

The weekly trend is not active. Price is -35.8% below the Trend Line and sits at 3.2% of its 52-week range. The latest completed week returned 2.7%, after a -16.0% four-week move. Near-term considerations: volume confirmation is below normal.

Setup score 18 out of 100
Latest Close 24.95 TWD 14 Aug 2026
1W Return 2.7% latest completed week
4W Return -16.0% short-term follow-through
12W Return -24.6% quarterly tape
Trend Breadth 34.6% 18 of 52 weeks active
Volume Ratio 0.3x vs 13-week average
What is working
  • No strong opportunity cluster is confirmed yet; monitor trend and activity pressure.
What could go wrong
  • The trend backdrop is inactive, so price action has not confirmed a constructive regime.
  • Price is below the Trend Line, which keeps downside pressure in focus.
  • Price is below Fair Value, so the market is still discounting the latest tape.
  • Activity pressure is negative, which weakens the current setup.
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 not active. Price is -35.8% below the Trend Line and sits at 3.2% of its 52-week range. The latest completed week returned 2.7%, after a -16.0% 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 0.3x 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 0.1012-week average 0.05

12-week confirmation

Trend active0/12Active trend-backdrop weeks in the latest 12-week window.
Positive pressure1/12Weeks with constructive activity pressure in the latest 12-week window.
Positive leadership0/12Weeks with positive relative leadership in the latest 12-week window.
Activity pressure0.10Current 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 -16.0% over four weeks, -24.6% over 12 weeks, and -42.2% over one year. The current trend has remained active for 0 consecutive weeks.

Performance by holding period

1W2.7%
4W-16.0%
12W-24.6%
26W-59.1%
52W-42.2%
Active trend streak0 weeks
Active weeks in one year18
Trend breadth34.6%

Activity pressure vs relative leadership

Activity pressureRelative leadership
Pressure-0.05Latest activity-pressure read.
Pressure change79.7%Four-week change in activity pressure.
Leadership-64.81Latest relative-leadership reading.
RS change-12.6%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 sentiment-

No current sentiment snapshot is stored.

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-67.7%Distance below the 52-week high.
13-week volatility8.6%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 higher5 of 2621 weeks finished lower.
Best week+22.6%Week of 22 May.
Worst week-20.2%Week of 24 Apr.
Latest week+2.7%Week of 14 Aug.

Shape of recent returns

Strong gains4
Modest gains1
Flat weeks0
Modest losses9
Sharp losses12
Recent vol8.6%13-week weekly-return volatility.
Base vol9.5%52-week weekly-return volatility.
Up/down split15/37Count of positive and negative weeks in the 52-week window.
Average skew11.0% / -5.3%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
14 Aug 202624.95 TWD2.7%38.84 TWD58.21 TWD-0.05-64.8169.8KOff
7 Aug 202624.30 TWD-6.5%40.30 TWD58.60 TWD0.02-65.04295.9KOff
31 Jul 202626.00 TWD-7.0%41.56 TWD58.98 TWD-0.09-62.2178.0KOff
24 Jul 202627.95 TWD-5.9%42.90 TWD59.41 TWD-0.18-60.47141.2KOff
17 Jul 202629.70 TWD12.7%44.20 TWD59.85 TWD-0.23-57.58393.2KOff
10 Jul 202626.35 TWD-2.0%45.46 TWD60.31 TWD-0.40-65.07169.3KOff
3 Jul 202626.90 TWD-11.8%46.90 TWD60.83 TWD-0.48-65.97225.1KOff
26 Jun 202630.50 TWD-0.3%48.32 TWD61.09 TWD-0.65-60.16240.7KOff
19 Jun 202630.60 TWD-1.6%49.25 TWD61.33 TWD-0.90-62.27111.9KOff
12 Jun 202631.10 TWD-2.4%50.49 TWD61.53 TWD-1.04-60.37204.3KOff
5 Jun 202631.85 TWD-0.5%51.71 TWD61.76 TWD-1.20-60.96249.2KOff
29 May 202632.00 TWD-3.3%52.97 TWD61.93 TWD-1.34-61.17328.7KOff
22 May 202633.10 TWD22.6%54.10 TWD62.00 TWD-1.33-58.22598.0KOff
15 May 202627.00 TWD-12.9%55.17 TWD62.08 TWD-1.35-65.58632.6KOff
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