A “good” beta depends entirely on what you want from your portfolio. Beta measures how much a stock’s price moves relative to the broader market, typically the S&P 500. A beta of 1.0 means the stock tends to move in lockstep with the market. If you want stability and income, a beta below 1.0 is generally what you’re after. If you’re chasing growth and can stomach bigger swings, a beta above 1.0 may suit you better.
What Beta Numbers Actually Mean
Beta uses the overall stock market as a baseline of 1.0. Every stock’s beta is a comparison to that baseline.
- Beta of 0: No correlation to the market at all. Cash effectively has a beta of zero, since its value doesn’t change when stocks rise or fall.
- Beta between 0 and 1: The stock moves in the same direction as the market but with smaller swings. A stock with a beta of 0.6, for example, would historically rise about 6% when the market climbs 10%, and fall about 6% when the market drops 10%.
- Beta of 1.0: The stock mirrors the market’s volatility almost exactly.
- Beta above 1.0: The stock swings more dramatically than the market. A beta of 1.5 means the stock has historically moved about 50% more than the market in either direction.
- Negative beta: The stock tends to move opposite the market. Gold mining stocks and certain inverse funds sometimes carry negative betas.
Good Beta for Conservative Investors
If you’re investing for retirement income, preserving capital, or simply sleeping better at night, look for stocks with betas between roughly 0.4 and 0.8. These companies tend to hold up better during market downturns, though they also won’t rally as hard during bull markets.
Consumer staples companies, which sell things people buy regardless of the economy (toothpaste, packaged food, beverages), typically fall in this range. According to NYU Stern data from January 2026, food processing companies average a beta of 0.61, soft drink companies sit at 0.64, and household product makers come in around 0.82. Utility stocks run even lower, with general utilities averaging a beta of just 0.24 and water utilities at 0.41.
These low betas reflect a simple reality: people keep paying their electric bills and buying groceries even during recessions. Revenue stays relatively stable, so stock prices don’t swing as wildly.
Good Beta for Growth-Oriented Investors
If you have a longer time horizon and want to outpace the market, you’ll typically need to accept betas above 1.0. Technology and semiconductor stocks are the classic high-beta territory. Semiconductor companies average a beta of 1.52, internet software firms sit at 1.69, and computer hardware companies come in around 1.35.
These stocks amplify market moves in both directions. During a strong bull market, a portfolio of high-beta tech stocks can significantly outperform the S&P 500. During a sell-off, those same stocks often fall harder and faster. A beta of 1.5 on a stock priced at $100 means that when the market drops 20%, that stock might fall closer to 30%.
Many growth investors target betas in the 1.2 to 1.8 range, accepting the higher volatility as the price of potentially higher returns over time.
Healthcare: A Middle Ground
Healthcare is interesting because its beta varies widely depending on the sub-industry. Hospitals and healthcare facilities average a beta of 0.80, making them relatively stable. Pharmaceutical companies come in at 0.98, almost perfectly tracking the market. But biotech firms average 1.14, and healthcare IT companies sit at 1.11, reflecting the speculative nature of drug development pipelines and the growth expectations baked into health tech.
This range makes healthcare useful for investors who want moderate volatility without going full defensive. A pharmaceutical stock with a beta near 1.0 gives you close-to-market returns with revenue supported by ongoing drug sales, which is a balance many investors find attractive.
How Beta Gets Calculated Matters
The beta you see on a financial website isn’t a fixed property of the stock. It changes depending on how far back the calculation looks and how frequently it samples price data.
The standard approach, sometimes called the “five-year rule of thumb,” uses 60 months of monthly return data. This is what most financial data providers display by default, and academic research has found it to be a reasonably robust measure for established companies. However, some research suggests a three-year window can actually outperform the five-year standard when rolling regressions are used, especially for companies whose risk profile has shifted recently.
Data frequency also makes a difference. Studies have found that daily and weekly betas tend to produce better forecasts than monthly betas. One study identified a 126-day (roughly six-month) estimation window using daily data as particularly effective. For shorter-term traders, this distinction matters. If you’re holding stocks for years, the standard five-year monthly beta is usually fine. If you’re making tactical moves over weeks or months, a beta calculated from daily data over a shorter window will better reflect the stock’s current behavior.
Young, fast-growing companies pose a particular challenge. Their betas tend to shift more quickly than those of mature firms, so a five-year lookback may include data from a period when the company had very different risk characteristics.
What Beta Does Not Tell You
Beta measures volatility in both directions, treating a 10% gain and a 10% loss as equally “risky.” That’s a significant blind spot. Most investors care far more about downside risk than upside surprise, but beta doesn’t distinguish between the two. A stock that occasionally spikes 15% above the market but rarely falls below it will carry a high beta, even though the volatility is mostly in your favor.
Beta also looks backward. It tells you how a stock behaved relative to the market over the past several years, not how it will behave going forward. A company that just lost a major customer, took on heavy debt, or entered a new market may have a very different risk profile than its historical beta suggests.
Value investors often point out another paradox: a stock that crashes 40% will mathematically appear riskier afterward (higher recent volatility), even though buying at the lower price may actually represent a safer investment if the company’s fundamentals remain solid.
Finally, beta only captures market risk, meaning the tendency to move with the broader stock market. It tells you nothing about company-specific risks like fraud, product recalls, regulatory action, or management problems. A utility stock with a beta of 0.3 can still lose most of its value if the company faces a major lawsuit or environmental disaster. Low beta is not the same as low risk.
Picking a Target Beta for Your Portfolio
Rather than picking a single “good” beta, think about what beta makes sense for your overall portfolio. You can blend high-beta and low-beta stocks to hit a target. If your portfolio beta is around 1.0, you can expect returns roughly in line with the market over time. Tilting it toward 0.7 or 0.8 gives you a smoother ride with somewhat lower expected returns. Pushing it toward 1.3 or higher amplifies both gains and losses.
Your ideal portfolio beta typically decreases as you get closer to needing the money. Someone with 30 years until retirement can tolerate a portfolio beta of 1.2 or higher, riding out the downswings for potentially higher long-term growth. Someone five years from retirement usually wants a portfolio beta well below 1.0, prioritizing capital preservation over maximum growth.
When evaluating individual stocks, compare their beta to the sector average rather than just to the market. A tech stock with a beta of 1.1 is actually unusually stable for its sector, while a utility stock with the same beta would be a significant outlier. Context matters more than the raw number.