PRV LSE Week ended 07 Aug 2026

Weekly Investor Report

Porvair plc · Industrials · Pollution & Treatment Controls

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Latest close 900.0 GBP
5.9% latest week
Weekly setup

Constructive, but selective

The weekly trend is active. Price is 12.3% above the Trend Line and sits at 92.0% of its 52-week range. The latest completed week returned 5.9%, after a 9.8% four-week move. The latest factor snapshot indicates quality ranks weakly versus its universe; growth ranks weakly; valuation is expensive relative to peers. The latest news-sentiment score is 54/100. Near-term considerations: price is close to its 52-week high.

Setup score 61 out of 100
Latest Close 900.0 GBP 7 Aug 2026
1W Return 5.9% latest completed week
4W Return 9.8% short-term follow-through
12W Return 20.6% quarterly tape
Trend Breadth 26.9% 14 of 52 weeks active
Volume Ratio 1.0x vs 13-week average
What is working
  • The trend backdrop is active with a 1-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.
What could go wrong
  • 1 reversal markers appear in the recent smart-money tape.
What to watch next
  • 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 5.9% Latest completed week; four-week move 9.8%. Indicator stack 18/67 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 54/100 3 relevant articles in the latest sentiment read.
01 · Price action

Where price is—and whether the trend supports it

The weekly trend is active. Price is 12.3% above the Trend Line and sits at 92.0% of its 52-week range. The latest completed week returned 5.9%, after a 9.8% 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 1.0x the 13-week average. Participation is around or above normal and provides reasonable confirmation.

26-week volume confirmation

Bar height shows volume; colour shows the weekly price direction
6 Feb 13 Feb 20 Feb 27 Feb 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 0.6612-week average 0.44

12-week confirmation

Trend active1/12Active trend-backdrop weeks in the latest 12-week window.
Positive pressure11/12Weeks with constructive activity pressure in the latest 12-week window.
Positive leadership4/12Weeks with positive relative leadership in the latest 12-week window.
Activity pressure0.66Current proprietary activity-pressure read.
Buy signals0Accumulation signal count in the latest 12 weeks.
Reversal markers11 reversal markers

No recent accumulation markers. 1 reversal markers.

03 · Momentum and leadership

Is performance persistent—and is the stock leading?

Performance is 9.8% over four weeks, 20.6% over 12 weeks, and 20.0% over one year. The current trend has remained active for 1 consecutive weeks.

Performance by holding period

1W5.9%
4W9.8%
12W20.6%
26W5.9%
52W20.0%
Active trend streak1 weeks
Active weeks in one year14
Trend breadth26.9%

Activity pressure vs relative leadership

Activity pressureRelative leadership
Pressure0.83Latest activity-pressure read.
Pressure change24.8%Four-week change in activity pressure.
Leadership5.51Latest relative-leadership reading.
RS change1474.3%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 ranks weakly versus its universe; growth ranks weakly; valuation is expensive relative to peers.

Open full factor analysis
Factor week 09 Aug 2026 Financial statements through 31 May 2026 Field coverage 91% Model confidence 91%

Relative factor standing

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

Overall factor strength20/100Blend of value, momentum, and quality. Underlying universe rank 81; rank 1 is best.
Value8/100Relative valuation strength. Underlying universe rank 93; rank 1 is best.
Quality19/100Profitability and accounting quality. Underlying universe rank 82; rank 1 is best.
Momentum85/100Medium-term price momentum. Underlying universe rank 16; rank 1 is best.
Growth13/100Revenue and earnings growth. Underlying universe rank 88; 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.

Value-quality framework33/100Value and quality alignment from the Sharemaestro SVQF framework.

Valuation

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

P/E
22.9x
Price divided by trailing earnings.
Price / sales
2.1x
Market value relative to trailing revenue.
EV / EBITDA
13.0x
Enterprise value relative to operating cash earnings.
Free-cash-flow yield
3.8%
Free cash flow as a share of enterprise value.

Business quality

Margins and the return generated on invested capital.

Gross margin
35.4%
Gross profit retained from each unit of revenue.
Operating margin
12.6%
Operating profit retained from revenue.
Free-cash-flow margin
8.3%
Free cash flow generated from revenue.
Return on invested capital
10.1%
Operating return generated on invested capital.

Growth and financial strength

Recent business growth and accounting strength.

Revenue growth
0.7%
Latest one-year revenue growth.
EPS growth
10.2%
Latest one-year earnings-per-share growth.
Free-cash-flow growth
-1.7%
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
0.8%
Cash dividends relative to market value.
Buyback yield
0.2%
Net share repurchases relative to market value.
Shareholder yield
1.0%
Dividend yield plus net buyback yield.
Net debt / EBITDA
0.2x
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 sentiment54/100

Weighted news tone is neutral across 3 relevant articles.

1 positive · 2 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-2.2%Distance below the 52-week high.
13-week volatility3.9%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 higher15 of 2610 weeks finished lower.
Best week+8.6%Week of 22 May.
Worst week-7.6%Week of 20 Mar.
Latest week+5.9%Week of 7 Aug.

Shape of recent returns

Strong gains4
Modest gains11
Flat weeks1
Modest losses6
Sharp losses4
Recent vol3.9%13-week weekly-return volatility.
Base vol3.5%52-week weekly-return volatility.
Up/down split29/20Count of positive and negative weeks in the 52-week window.
Average skew2.8% / -3.0%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.

IndustryGB Pollution & Treatment Controls
4-week rank1 / 3
Group average-9.9%
Trend breadth66.7%
Trend66.7%active weekly trend signals
MD33.3%positive activity pressure
RS66.7%positive relative leadership

Four-week leaders

PRV · LSE9.8%MYX · LSE-19.0%AEG · LSE-20.4%
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 tape55/100

Trend, activity pressure, participation, and risk combine to a 55/100 tape read.

 Indicator analysis46/100

Latest 12-week confirmation: trend 1/12, activity pressure 11/12, relative leadership 4/12.

Activity pressure 0.66; 1 reversal markers Factors30/100

O'Shaughnessy factor stack blends value, quality, momentum, and confidence.

Buyback Yield rank 41; Small Cap Core rank 89 SVQF33/100

Value and quality alignment from the Sharemaestro SVQF framework.

Composite rank 175.5 of 260 Patient CapitalQuiet

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

No recent buy signal Sentiment54/100

Weighted news tone is neutral across 3 relevant articles.

Porvair plc Revenue Breakdown – LSE:PRV Insiders50/100

No recent insider transaction evidence is stored.

 Earnings50/100

No stored earnings event is currently attached to this ticker.
WeekCloseReturnTrend LineFair ValuePressureLeadershipVolumeTrend
7 Aug 2026900.0 GBP5.9%801.3 GBP703.3 GBP0.835.51392.6KOn
31 Jul 2026850.0 GBP3.4%799.1 GBP701.6 GBP0.80-0.05145.7KOff
24 Jul 2026822.0 GBP-1.9%798.5 GBP700.2 GBP0.76-2.231.5MOff
17 Jul 2026838.0 GBP2.2%798.6 GBP698.9 GBP0.710.92112.7KOff
10 Jul 2026819.7 GBP0.2%796.6 GBP697.6 GBP0.67-0.401.3MOff
3 Jul 2026817.7 GBP-3.5%795.9 GBP696.6 GBP0.53-2.4713.1KOff
26 Jun 2026847.6 GBP7.1%795.7 GBP695.4 GBP0.502.46165.6KOff
19 Jun 2026791.8 GBP-4.3%792.9 GBP694.0 GBP0.44-3.3054.8KOff
12 Jun 2026827.7 GBP0.9%792.9 GBP693.3 GBP0.50-0.3918.6KOff
5 Jun 2026820.0 GBP-2.6%790.8 GBP692.3 GBP0.30-0.6534.9KOff
29 May 2026842.0 GBP4.0%789.0 GBP691.3 GBP0.091.28175.6KOff
22 May 2026810.0 GBP8.6%786.8 GBP689.9 GBP-0.32-3.32560.7KOff
15 May 2026746.0 GBP0.8%785.0 GBP688.8 GBP-0.61-8.91499.4KOff
8 May 2026740.0 GBP1.4%785.2 GBP688.3 GBP-0.84-10.34434.6KOff
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