COST LSE Week ended 07 Aug 2026

Weekly Investor Report

Costain Group PLC · Industrials · Engineering & Construction

Latest close 2.15 GBP
2.1% latest week
Weekly setup

Mixed setup

The weekly trend is not active. Price is -98.3% below the Trend Line and sits at 0.1% of its 52-week range. The latest completed week returned 2.1%, after a 3.1% four-week move. The latest factor snapshot indicates quality is middle-of-the-pack; growth is moderate; valuation is neither clearly cheap nor expensive. The latest news-sentiment score is 43/100. Near-term considerations: volume confirmation is below normal.

Setup score 29 out of 100
Latest Close 2.15 GBP 7 Aug 2026
1W Return 2.1% latest completed week
4W Return 3.1% short-term follow-through
12W Return -98.9% quarterly tape
Trend Breadth 80.8% 42 of 52 weeks active
Volume Ratio 0.8x vs 13-week average
What is working
  • Next-week expectancy is positive at 72.79% based on similar historical setup states.
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 -98.3% below the Trend Line and sits at 0.1% of its 52-week range. The latest completed week returned 2.1%, after a 3.1% 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 0.8x 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 20 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 0.2012-week average 0.58

12-week confirmation

Trend active2/12Active trend-backdrop weeks in the latest 12-week window.
Positive pressure0/12Weeks with constructive activity pressure in the latest 12-week window.
Positive leadership2/12Weeks with positive relative leadership in the latest 12-week window.
Activity pressure0.20Current proprietary activity-pressure read.
Buy signals0Accumulation signal count in the latest 12 weeks.
Reversal markers1010 reversal markers

No recent accumulation markers. 10 reversal markers.

03 · Momentum and leadership

Is performance persistent—and is the stock leading?

Performance is 3.1% over four weeks, -98.9% over 12 weeks, and -98.7% over one year. The current trend has remained active for 0 consecutive weeks.

Performance by holding period

1W2.1%
4W3.1%
12W-98.9%
26W-98.8%
52W-98.7%
Active trend streak0 weeks
Active weeks in one year42
Trend breadth80.8%

Activity pressure vs relative leadership

Activity pressureRelative leadership
Pressure-1.15Latest activity-pressure read.
Pressure change7.2%Four-week change in activity pressure.
Leadership-98.53Latest relative-leadership reading.
RS change0.1%Four-week change in relative leadership.
04 · Fundamentals and valuation

What investors are paying for—and the quality behind it

The latest factor snapshot indicates quality is middle-of-the-pack; growth is moderate; valuation is neither clearly cheap nor expensive.

Open full factor analysis
Factor week 09 Aug 2026 Financial statements through 31 Dec 2025 Field coverage 82% Model confidence 65%

Relative factor standing

Higher display scores are better. Each score is converted from the underlying universe rank, where rank 1 is best.

Overall factor strength70/100Blend of value, momentum, and quality. Underlying universe rank 31; rank 1 is best.
Value64/100Relative valuation strength. Underlying universe rank 37; rank 1 is best.
Quality65/100Profitability and accounting quality. Underlying universe rank 36; rank 1 is best.
Momentum65/100Medium-term price momentum. Underlying universe rank 36; rank 1 is best.
Growth65/100Revenue and earnings growth. Underlying universe rank 36; rank 1 is best.
How to read this

Quality and valuation are separate questions

A strong company can still carry a demanding valuation. This report shows profitability, growth, balance-sheet strength, and the price paid for those characteristics separately.

Valuation

How much investors are paying for earnings, sales, and cash flow.

P/E
-
Price divided by trailing earnings.
Price / sales
-
Market value relative to trailing revenue.
EV / EBITDA
-
Enterprise value relative to operating cash earnings.
Free-cash-flow yield
-
Free cash flow as a share of enterprise value.

Business quality

Margins and the return generated on invested capital.

Gross margin
10.9%
Gross profit retained from each unit of revenue.
Operating margin
4.3%
Operating profit retained from revenue.
Free-cash-flow margin
4.6%
Free cash flow generated from revenue.
Return on invested capital
35.8%
Operating return generated on invested capital.

Growth and financial strength

Recent business growth and accounting strength.

Revenue growth
-16.4%
Latest one-year revenue growth.
EPS growth
22.8%
Latest one-year earnings-per-share growth.
Free-cash-flow growth
44.3%
Latest one-year free-cash-flow growth.
Piotroski F-score
7/9
Nine-point accounting-strength checklist.

Shareholder return and balance sheet

Cash returned to owners and financial leverage.

Dividend yield
-
Cash dividends relative to market value.
Buyback yield
-
Net share repurchases relative to market value.
Shareholder yield
-
Dividend yield plus net buyback yield.
Net debt / EBITDA
-2.5x
Balance-sheet debt relative to operating cash earnings.
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 sentiment43/100

Weighted news tone is neutral across 7 relevant articles.

1 positive · 5 neutral · 1 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-99.0%Distance below the 52-week high.
13-week volatility26.8%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 higher17 of 269 weeks finished lower.
Best week+12.8%Week of 13 Mar.
Worst week-99.0%Week of 5 Jun.
Latest week+2.1%Week of 7 Aug.

Shape of recent returns

Strong gains3
Modest gains14
Flat weeks0
Modest losses3
Sharp losses6
Recent vol26.8%13-week weekly-return volatility.
Base vol14.5%52-week weekly-return volatility.
Up/down split31/20Count of positive and negative weeks in the 52-week window.
Average skew3.4% / -8.7%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.

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 20262.15 GBP2.1%124.5 GBP105.6 GBP-1.15-98.533.2MOff
31 Jul 20262.11 GBP-2.5%129.9 GBP105.9 GBP-1.10-98.592.8MOff
24 Jul 20262.17 GBP3.1%135.1 GBP106.1 GBP-1.12-98.573.0MOff
17 Jul 20262.10 GBP0.5%140.3 GBP106.4 GBP-1.17-98.634.6MOff
10 Jul 20262.09 GBP-3.7%145.5 GBP106.7 GBP-1.24-98.6510.4MOff
3 Jul 20262.17 GBP3.3%150.7 GBP107.0 GBP-1.37-98.654.0MOff
26 Jun 20262.10 GBP1.4%155.8 GBP107.3 GBP-1.40-98.70790.4KOff
19 Jun 20262.07 GBP6.2%160.9 GBP107.6 GBP-1.20-98.732.7MOff
12 Jun 20261.95 GBP0.6%165.7 GBP107.9 GBP-0.94-98.841.8MOff
5 Jun 20261.94 GBP-99.0%170.6 GBP108.1 GBP-0.60-98.85872.7KOff
29 May 2026193.8 GBP0.5%175.5 GBP108.4 GBP-0.3512.233.5MOn
22 May 2026192.8 GBP-4.3%174.1 GBP107.5 GBP-0.3411.639.6MOn
15 May 2026201.5 GBP3.8%172.8 GBP106.6 GBP-0.4020.376.2MOn
8 May 2026194.2 GBP4.0%171.1 GBP105.7 GBP-0.3516.323.8MOn
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