River UK Micro Cap Reports 22.3% NAV Growth and 17% Discount in Year-End Update

River UK Micro Cap’s 12-month result: +22.3% NAV and a big win over the benchmark

River UK Micro Cap Limited (RMMC) has posted a strong year-end trading update for the 12 months to 30 September 2025. Net asset value (NAV) per share rose 22.3%, beating its benchmark – the Numis Small Cap inc AIM ex ITs – which returned 8.3%. That is 14.1% of outperformance, putting the trust in the top decile of the AIC UK Smaller Companies sector over the period.

It is not just a one-year story, either. Since IPO in December 2014, RMMC has delivered a 12.8% internal rate of return (IRR) after all fees, versus a 5.6% annualised benchmark return. NAV growth has beaten the benchmark in 9 of 11 financial periods, underperforming only in FY2019 and FY2022.

Quick refresher on the jargon

• NAV per share: the value of the portfolio minus liabilities, divided by shares in issue.
• IRR: internal rate of return, a time-weighted measure that adjusts for capital returned to shareholders.
• Discount to NAV: when the share price trades below the NAV per share. A 17% discount means £1 of assets can be bought for 83p in the market.
• ppt: percentage points – the absolute difference between percentages.

Key numbers investors should know

Metric	Figure
12-month NAV per share return	+22.3%
Benchmark (Numis Small Cap inc AIM ex ITs)	+8.3%
Outperformance vs benchmark	+14.1%
NAV per share (30 Sep 2025)	248.9p
Share price discount to NAV	17%
IRR since inception (after all fees)	12.8%
Benchmark annualised return since inception	5.6%
Portfolio free cash flow yield	7.0% (8.5% when adjusted for the current discount)

Why the 17% discount to NAV matters now

Despite the outperformance, the shares still trade at a 17% discount to the 248.9p NAV per share. Management has reiterated a long-term commitment to returning capital to shareholders. Combined with a portfolio-level free cash flow yield of 7% (rising to 8.5% when you factor in the discount), that is a punchy setup for potential discount narrowing if sentiment improves.

In plain English: you are buying a portfolio of cash-generative, net cash businesses at a double-digit markdown. If performance stays solid and buybacks or other capital returns continue, the gap can close. Not guaranteed, but the ingredients are there.

Portfolio standouts: big winners and takeover premiums

Stock selection did the heavy lifting. The biggest positive contributors were:

• Serabi Gold: +265%, adding 4.2ppt to relative performance.
• DF Capital: +80%, +3.5ppt contribution.
• ActiveOps: +51%, +2.9ppt contribution.
• Gear4Music: +72%, +2ppt contribution.

There was also a healthy dose of M&A support. Aquis, Renold, Science in Sport and Windward were all bid for by strategic or financial buyers, with premiums to 30 September 2024 prices of 96%, 54%, 39% and 60% respectively. That sort of corporate activity is exactly the tailwind micro caps can benefit from when private equity and trade buyers go bargain-hunting.

Fresh ideas: five new positions already up on average

RMMC initiated five new holdings over the year, with an average gain of 24% from the trust’s average purchase price to 30 September 2025. The new names add breadth across industrial technology, software and specialist materials:

• Dialight – industrial LED lighting.
• Microlise – enterprise software for fleet operators.
• Sylvania Platinum – low-cost producer of platinum group metals from chrome tailings.
• Tracsis – mission-critical software and hardware for the rail industry.
• Trifast – qualified industrial fasteners and outsourced supply chain solutions.

Early gains are nice, but the bigger point is positioning: these are operationally geared, niche players where fundamentals can drive multi-year value, especially if the small-cap cycle turns up.

Long-term track record: consistency since the 2014 IPO

Since inception, the trust’s 12.8% IRR (after fees) has outpaced the benchmark’s 5.6% annualised return. NAV growth has topped the benchmark in 9 of 11 financial periods, only slipping in FY2019 and FY2022. The trust sits top quartile within the AIC UK Smaller Companies sector over the long run, which is a useful quality marker for style-persistent investors.

What the manager is saying about the cycle for small caps

Partner and Portfolio Manager George Ensor points to a gap between depressed sentiment and improving company fundamentals and earnings. He highlights a portfolio of businesses with net cash balance sheets and strong free cash flow generation, and believes we are at or near the start of a new global cycle of small-cap outperformance.

If that call is right, RMMC’s strategy – focused on inefficiencies among UK micro caps – should be well placed. It also helps explain the ongoing commitment to retire equity, which can compound NAV per share if done at a discount.

Join the investor webinar for deeper detail

RMMC will host a live quarterly investor webinar on 15 Oct 2025 at 10:00 BST via Investor Meet Company. You can register here:

Register for the River UK Micro Cap webinar

My take: what’s to like, and what to watch

Reasons to be positive

• Strong 12-month outperformance: +22.3% NAV vs +8.3% benchmark, top decile in sector.
• Proven long-term execution: 12.8% IRR since inception, 9 of 11 periods ahead of the benchmark.
• Supportive portfolio mix: emphasis on net cash, free cash flow, and operational progress.
• Discount opportunity: 17% discount to a 248.9p NAV, with an explicit commitment to return capital.
• M&A and stock picking: multiple bid situations and standout contributors show alpha generation.

Things to keep an eye on

• Sentiment is still “depressed” in UK small and micro caps, per the manager. That can keep discounts wider for longer.
• Key portfolio details such as gearing, ongoing buyback quantum and precise capital return mechanics are not disclosed here – look for the Annual Report for fuller context.
• New positions have started well, but sustaining gains will hinge on continued delivery from the underlying companies.

Bottom line

This is an upbeat update from River UK Micro Cap. A double-digit NAV gain, clear outperformance, and several stock-specific wins underpin the story. The 17% discount to a cash-generative portfolio – alongside a stated commitment to return capital – is the swing factor. If the manager’s view on a new small-cap cycle plays out, there is room for both NAV growth and discount narrowing. If sentiment stays stuck, the discount may linger, but the trust’s long-term track record gives it the benefit of the doubt.