Reading beta numbers
- Beta 0.5: When the S&P 500 falls 10%, this typically falls ~5%
- Beta 0.85: Moves roughly 85% as much as the market — SCHD and VYM typically fall in this range
- Beta 1.0: Tracks the market closely
- Beta 1.5: Amplifies moves — a 10% market decline might mean 15% for this holding
Beta for major dividend ETFs (approximate)
- SCHD: ~0.80–0.85
- VYM: ~0.80–0.90
- VIG: ~0.85–0.90
- Utilities sector: ~0.50–0.65
- S&P 500 (SPY): 1.0 (by definition)
Why lower beta matters in retirement
A portfolio with beta 0.75 falls roughly 25% less than the market in a correction. For a retiree who needs dividend income to be uninterrupted, a less volatile portfolio reduces the psychological pressure of large paper losses — and reduces the risk of panic-selling at the worst time.
However, lower beta also means less participation in strong bull market rallies. The trade-off is intentional: dividend income portfolios typically sacrifice some upside for more stable, predictable performance.
Beta's limitation
Beta is backward-looking. A historically low-beta stock (say, a bond-like utility) can become volatile during interest rate regime changes when the market reprices long-duration assets. Beta should be treated as a useful guide rather than a guarantee of future stability.
Related terms
- Volatility — related concept; beta measures directional sensitivity, volatility measures magnitude of price movement
- Sequence of returns risk — lower-beta portfolios help manage this