Key idea
Fewer than most people hold. A handful of well-chosen funds diversifies you fully; piling on more just creates overlap and confusion.
A common beginner habit is collecting funds, ten, fifteen, twenty, in the belief that more funds means more diversification. Beyond a point, it does the opposite: the funds start holding the same companies, so you get complexity without extra benefit.
Why more is not safer
A single diversified equity fund already holds dozens of companies. Add a second in a different category and you broaden sensibly. But by the time you hold many funds in similar categories, they overlap heavily, owning the same top stocks, so your "diversification" is an illusion, and tracking it all becomes a chore.
A few
well-chosen funds
Cover
most diversification
More
adds overlap, not safety
The sensible range
Many investors are well served by a small handful of funds spanning their needed categories (a broad equity fund, perhaps a debt fund, maybe one more), rather than a sprawling collection. The exact number depends on your goals, but the direction is clear: enough to diversify, few enough to manage.
A tight, well-chosen set beats a large, overlapping one. Simplicity you can actually monitor is worth more than a portfolio too tangled to review. How many suits you is your call.
Finished reading?
Marking this complete counts today, and your streak becomes day 1.