We asked ChatGTP to see if it could pick some of the best UK large, medium and small-cap stocks to buy right now. It told us that selecting stocks across different market capitalizations can help diversify your investment portfolio.
ChatGTP highlighted three companies listed on the London Stock Exchange that are noteworthy in their respective categories.
Large-Cap: BP plc (BP)
BP is a major player in the energy sector, known for its global operations in oil and gas exploration, production, and refining. The company has been highlighted for its share buyback programs and potential benefits from rising oil prices. While BP’s share price faced underperformance in 2024, these strategic moves could position it well for future growth.
Mid-Cap: AB Dynamics plc (ABDP)
AB Dynamics is a leading provider of automotive testing systems, including advanced driving simulators and testing equipment for vehicle dynamics. The company is poised to triple its profit in the next 3-5 years due to significant investments in operations and infrastructure. Analysts note the potential for “sharply rising margins and strong cash flow” driven by increasing global ADAS regulation and ongoing M&A activities. If medium-term goals are achieved, the companyβs shares could more than double.
Small-Cap: Polar Capital Holdings plc (POLR)
Polar Capital is a London-based fund management company with a focus on technology and healthcare sectors. As of December 2024, the firm managed Β£23.8 billion in assets, reflecting a 9% increase over nine months. This growth is attributed to modest net inflows and positive market performance. The company’s emphasis on sectors with long-term growth potential and its operational leverage make it an attractive option in the small-cap space.
Before making any investment decisions, it’s essential to conduct thorough research and consider your individual financial situation. Diversifying your portfolio and consulting with financial advisors can also help mitigate risks associated with stock market investments.

Richard is the founder of the Good Money Guide (formerly Good Broker Guide), one of the original investment comparison sites established in 2015. With a career spanning two decades as a broker, he brings extensive expertise and knowledge to the financial landscape.
Having worked as a broker at Investors Intelligence and a multi-asset derivatives broker at MF Global (Man Financial), Richard has acquired substantial experience in the industry. His career began as a private client stockbroker at Walker Crips and Phillip Securities (now King and Shaxson), following internships on the NYMEX oil trading floor in New York and London IPE in 2001 and 2000.
Richard’s contributions and expertise have been recognized by respected publications such as The Sunday Times, BusinessInsider, Yahoo Finance, BusinessNews.org.uk, Master Investor, Wealth Briefing, iNews, and The FT, among many others.
Under Richard’s leadership, the Good Money Guide has evolved into a valuable destination for comprehensive information and expert guidance, specialising in trading, investment, and currency exchange. His commitment to delivering high-quality insights has solidified the Good Money Guide’s standing as a well-respected resource for both customers and industry colleagues.
You can contact Richard at richard@goodmoneyguide.com