How many securities to hold
· beginner
Automated material · TradeAlmanac editorial deskDraft prepared by a language model from our stored data; not reviewed by an editor.
The question of how many positions to hold has a range of answers, and the edges of the range are justified.
The lower bound
A handful of securities means the portfolio's result is decided by individual events at individual issuers. One corporate mishap changes the year.
{{figure:diversification|caption=Past two or three dozen securities the curve is almost flat: adding names stops reducing anything}}
The upper bound
Beyond a few dozen, risk reduction all but stops while costs and effort keep rising. A portfolio of a hundred securities is an index assembled by hand and more expensively.
The attention constraint
Every position requires following its accounts and corporate events. A portfolio you cannot keep up with goes stale in your head, and decisions get made on memories of what was true a year ago.
A practical guide
As many as you can genuinely follow, and no fewer than it takes for one security not to decide the result. For most private investors that is a few dozen.
The alternative
An index fund as the core plus a small number of individual securities — The index approach: buying the whole market. Diversification then comes from the fund and attention goes to what you have actually studied.
Related: How to assess the risk of a position, step by step.
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Draft prepared by a language model from our stored data; not reviewed by an editor.
Model: claude-opus-5
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