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Its Not Harry

Comment and opinion for retail investors in the UK

Monthly commentary

Deep Dive – January 2026

5th January 2026 by Mark Potter Leave a Comment

This new year I will take a classical approach and do the look back and look forward that underlies the naming of the month.

I usually read what I wrote a year ago at the start of any new cycle but I note that I deferred offering a full opinion on the impact of Trump’s election until after his inauguration, so the blog post to reference is the one for February 2025.

My analysis of Trump’s likely behaviour was accurate in almost every detail.  My expectation that the US Dollar would lose credibility was also correct.  However, I did not foresee that AI would be far and away the main corporate story of the year and that the bubble I was worrying about 11 months ago would keep inflating.  I was right in my expectations of a poor climate for healthcare stocks and that money would flow into defence industry shares.

So how did markets perform in 2025?

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Filed Under: Asset Allocation, Markets, Members Only, Monthly commentary, Portfolios

DIY Investing – does it pay off?

15th December 2025 by Mark Potter Leave a Comment

Readers will have maybe noted that a great deal of the money being invested by retail investors is going into ETFs and most of those, although now a decreasing proportion, will be passive index trackers. In addition, plenty of money goes into mutual funds that are passive, and even model portfolios where the asset allocation may be varied a bit from time to time, but the underlying strategy is largely far from active and trackers are used to get market exposures.

Are we doing well?

The founder of Vanguard, which firm is now one of the largest owners of lsited investments in the world, made his name arguing that paying for portfolio management was a waste of time because the vast majority of managers in the USA failed to beat the S&P 500 index consistently. Now, we all know that is not a very complete rationale (why would the S&P 500 be your sole benchmark?, for instance) but if the index makes enough money over the long term to meet your investment objectives and it can be tracked very cheaply, why not do that? Clearly, a great many people have agreed that was the way to go!

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Filed Under: Cost of investing, Members Only, Monthly commentary, Passives and Trackers, Portfolios

Deep Dive – December 2025

1st December 2025 by Mark Potter Leave a Comment

Firstly, may I wish all my readers seasonal greetings, hoping that all your Christmas preparations are going well!  Most importantly, as most of us are the wrong side of pension age, I wish you the best of ongoing health!

Having written a couple of longish and quite technical pieces last month on AI and ETFs, I am going to offer a more leisurely and shorter read this month! The dive will not be so deep, more of a swim in interesting waters.

Not quite time to doze off!

A question to which the answer may not appear to matter that much – but it does!

That question is:

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Filed Under: Economics, Markets, Members Only, Monthly commentary

How To – Use Artificial Intelligence to Review a Portfolio of UK Investment Funds

17th November 2025 by Mark Potter Leave a Comment

(although in the format of a ‘How To’ article that would usually form part of the website’s permanent content, this topic is fluid and I am still learning, so I am leaving the article as an, albeit very detailed, blog post)

Introduction

Artificial intelligence (AI) has emerged as a game-changer across various sectors, and the investment management industry is no exception. Reviewing and managing a portfolio of UK investment funds can be a complex and time-consuming task.  I have offered subscribers some Excel workbooks over the years, more recently with support from one of your fellow investors who is a spreadsheet programming ace. Both he and I have wondered about adding AI elements to data collection process (the most boring part of the task) or even creating an app that both improves the data presentation and semi-automates the review process.

The App is a work in progress and I may well be able to offer you access to it (at a cost) at some future date, but in the meantime I have explored the possibility of AI completing a portfolio review and quite quickly learned that there can be good outcomes, with genuine portfolio insights, time savings in data analysis and (with care) reliable and repeatable date collection.

A caveat that all experienced AI users will not need to hear is that AI is like an over eager Jeeves – it will always try to please you with some sort of result, making its best efforts credible, even when in fact they are pure fiction.  That means that the way it is tasked to provide data requires some thought and requests must always be qualified with conditions that include reporting the exact sourcing and likely reliability of specific data.

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Filed Under: Education, Innovation, Members Only, Monthly commentary

Deep Dive – November 2025

1st November 2025 by Mark Potter Leave a Comment

The death on investment funds – long live ETFs!

Around 7 or 8 years ago, during the period when I was working for Headley Financial Services (HFS) after they bought my business ahead of my retirement, I was asked as the most technically qualified member of their investment committee to research and write a report for the committee on the then relatively new asset type of exchange traded funds (ETFs) and their cousins (rarer) ETCs and ETPs.

I don’t have a copy of the report now but I can more or less recall what I concluded, which was that although the likes of Vanguard had succeeded in creating cheap funds that tracked the main widely used stock market indices (by an automatic process – so passively) the market in ETFs had even by then expanded to track all sorts of other indices, including ones made to order, generally but not always at quite low cost. 

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Filed Under: Academic theory, Funds, Members Only, Monthly commentary, Passives and Trackers, Portfolios

Deep Dive – October 2025

6th October 2025 by Mark Potter Leave a Comment

When a cult rules millions

For most of my working life, I have been able to tell those who asked me that politics made not much immediate difference to investment markets.  Of course, where politicians make significant changes to macro-economic conditions (say Reagan and Thatcher in the ‘80s under the influence of the monetarists and market liberalists), there will be impacts over the medium to long term. 

However, as a rule markets have always taken the view that in the democratic ‘free’ world, politicians come and go and policies oscillate from a bit leftish to a bit rightish with the odd major annoying upset, like Brexit.

It is also widely understood that the most important capitalist economy, the USA, is really under the control of two main groups – a loose collective of shadowy billionaire oligarchs and the lobbying firms employed by the mega corporations.  This was explained to me when I was a teenager attending college to study business and as a Brit, I struggled to believe it, but now there is some evidence (especially during the Boris Johnson period) that the same sort of democratic corrosion is occurring in the UK.

Are politics really relevant for investors?

The people with the real power in the USA welcomed Trump’s re-election and the US equity market performed accordingly early this year.  Here was a man who was not very bright, had only made money with the help of Russian property developers or by blatantly disreputable behaviour, when left to his own devices went bankrupt over and over again, had an ego that forever needed massaging, and was utterly free of the ethics that most people think define Christian societies. 

In essence, they thought that they knew, as the KGB had discovered much earlier, that this was a man whom you could easily manipulate with a little forethought.

That was however their mistake. 

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Filed Under: Economics, Markets, Members Only, Monthly commentary, Opinion, Politics

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