Sectoral and thematic funds concentrate in one industry or idea—IT, pharma, manufacturing, energy transition, and more. Concentration is the product. That means higher upside in the right cycle and deeper pain in the wrong one.
Why these funds feel irresistible
Narratives travel faster than diversification. When a theme is in the news, inflows rise, NAVs look strong, and late investors arrive just as valuations are stretched. The pattern is old; the marketing creatives are new.
A discipline checklist
- Size cap: keep thematic exposure a minority of equity—often single digits to low teens.
- Thesis test: write one sentence on why the theme should earn excess returns for 5+ years.
- Valuation humility: strong stories can still be expensive.
- Exit rule: decide in advance what would make you trim (thesis break, size creep, rebalancing).
Conclusion
Sectoral and thematic funds are precision tools. Use them only with a clear thesis, a hard size limit, and the willingness to be early—or wrong. If you need a story to stay invested, you may not need the theme fund.