Martin Gamble is Shares and Markets writer at AJ Bell. He was previously the Education Editor of Shares Magazine. He has been with the business since 2019.
Martin graduated from the University of Kent in 1984 with an accounting degree.
He has extensive financial markets experience gained through managing UK and European equity portfolios for institutions including Hermes Investment Management, Manulife Financial and Royal Bank of Canada.
While at Manulife Financial the funds Martin managed were consistently in the top quartile which was recognised with a ‘Stars of Excellence’ award.
Martin subsequently headed up the fund management business for Royal Bank of Canada in London.
Outside of work, Martin likes long distance hiking and playing Backgammon.
6 February 2026
Martin Gamble on US markets: Amazon’s AI spending splurge, crypto collapseIt’s been a noisy week on Wall Street. A crypto collapse, with Bitcoin hitting its lowest level since October 2024, hit companies tied into that ecosystem. Meanwhile AI helped drive selling in two separate parts of the market.
Continuing concern about the level of artificial intelligence spending by big tech saw Amazon, in particular, heavily...
5 February 2026
Why the US dollar matters to UK investorsThe value of the US dollar has fallen by around 13% against a basket of major currencies since Donald Trump returned to the White House in January 2025 for his second term as US president, plumbing a four-year low.
While very recently the dollar has reversed a small portion of those losses, that longer-term trend has major implications for...
5 February 2026
Why Anthropic’s AI tool is sparking turmoil for data and software firmsWith investors fretting about whether AI-related stocks are in a bubble, the president of investment manager Blackstone, Jon Grey, believes investors should instead be more concerned by disruption risk to big industries.
“What happens when industries change overnight, like what we saw to the Yellow Pages back in the nineties when the Internet came...
30 January 2026
Martin Gamble on US markets: Health insurance stocks plunge, data storage names surgeA topsy-turvy week for US markets saw investors digest turbulence in the health insurance space, earnings from a good chunk of the big tech contingent, as well as the latest decision on interest rates.
Health insurance names like UnitedHealth and Humana were sickly after the Trump administration proposed keeping Medicare rates flat next year which...
28 January 2026
Why are small caps beating large caps and can it continue?Since the middle of November 2025, the small cap Russell 2000 index has returned around 15%, more than double the gain of its larger brethren, the benchmark S&P 500 and the technology-focused Nasdaq Composite indices.
This is not just a US phenomenon but has an international dimension. For instance, the MSCI Global small cap index has also...
26 January 2026
What is an AGM and why should investors get involved?Annual general meetings (AGMs) are an opportunity for shareholders to have a say on company matters. Read more about AGMs and why investors should get involved.
24 January 2026
Which big UK stocks have grown their dividends the most?For many investors dividends are a good source of income, but they can also be a good source of capital growth. Long-term studies have shown that dividends have contributed more than half of the stock market’s total return.
This shows that reinvesting dividends is crucial for maximising shareholder returns and compounding wealth. Even for investors...
23 January 2026
Martin Gamble on US markets: Kraft Heinz, Netflix, Procter & GambleWhat was shaping up to be a disaster of a week for US indices, curtailed by Martin Luther King Day, turned out instead to be at worst mixed.
President Trump’s threats to impose tariffs on European countries over Greenland and hints at the use of military force to acquire the territory if it wasn’t possible to do so by other means put markets on...
21 January 2026
How short sellers may have amplified WH Smith’s recent gainsWhen a company which is being targeted by short sellers unexpectedly announces good news, it can spark a big rally in the share price as these investors scramble to ‘cover’ their positions.
This additional buying pressure can lead to a bigger share price move than otherwise expected.
This was potentially evident with WH Smith recently after a well...
18 January 2026
What to expect from big tech as AI fever subsidesSix of the so-called ‘Magnificent Seven’ are set to report their earnings between the last week of January and the first week of February. Combined these companies add up to a combined $17 trillion of market valuation – or around 30% of the entire value of the US market’s flagship S&P 500 index.
The mood music feels like it has already shifted from...
