Financial Basics · Investing Fundamentals

Stocks

Definition

A stock is a fractional ownership share in a publicly traded company. Stockholders benefit when the business grows (price appreciation) and, for many companies, receive a portion of profits as dividends.

Why it matters in retirement

Over the past 95 years, US stocks have delivered roughly 10% nominal / 7% real annualized returns — the most reliable way to grow purchasing power faster than inflation. Even a conservative retiree typically needs meaningful stock exposure to avoid running out of money over a 25–30 year retirement.

Key Numbers — 2026

S&P 500 long-run nominal return
~10.0%
S&P 500 long-run real return
~7.0%
Worst 10-yr period (real)
−1.4%
Typical retiree equity allocation
40–60%

Pros

  • Best long-term inflation hedge
  • Liquid, tax-efficient (long-term capital gains)
  • Dividends can supplement income

Cons

  • Volatile — 30%+ drawdowns happen
  • Sequence-of-returns risk early in retirement
  • Individual stocks carry concentration risk

Common mistakes

  • Owning individual stocks instead of low-cost index funds
  • Selling during corrections and buying back after recovery
  • Confusing dividend yield with total return
  • Not rebalancing — letting winners become a concentration risk

Related

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