Thematic and Sector Investing: The Complete Guide
Last updated June 2026
Short answer
Thematic investing means backing an idea (a sector, a technology, or a trend) rather than the whole market. This hub gathers the sector stock lists and screens, and links to Walnut's thematic baskets. Walnut is not an investment adviser.
These guides cover investing by theme: which stocks fit a sector, broad screens for ideas, and how to build a thematic basket. Each theme also has a live basket and matching ETF guides.
Sector and commodity stock lists
Screens and broad picks
How to invest in a theme
FAQ
What is thematic investing?
Thematic investing means putting money behind a specific idea, such as a sector (defense), a technology (quantum computing), or a trend (data centers), rather than tracking the whole market. It can carry more concentration risk. Walnut is not an investment adviser.
How do I invest in a theme?
You can buy individual stocks in the theme, a sector or thematic ETF, or build a basket. Walnut lets you build a thematic basket from real holdings and place the trades you approve at your own broker.
Is thematic investing risky?
It can be more concentrated than a broad-market fund, so a single sector's downturn hits harder. Size thematic positions accordingly and diversify the rest of the portfolio.
Where can I see a theme's performance?
Walnut's theme pages show a live basket-versus-S&P-500 chart with the constituents and matching ETFs, so you can see how the idea has done before committing.
Walnut is informational and is not an investment adviser. Product features, pricing, and availability change; verify current details on each provider's site before deciding. Nothing here is a recommendation to buy, sell, or hold any security.