Yahoo Finance screens Costco and other stocks viewed as “negative beta” for resilience in a market selloff

A Yahoo Finance screen is pointing to a basket of “negative beta” stocks that, according to the methodology cited by the outlet, have historically shown less sensitivity to broad market swings and, in some cases, have moved against the market during downturns. The list includes Costco Wholesale (COST) and Exxon Mobil (X), along with 17 other companies, as a potential set of candidates for investors bracing for a market selloff.

In the outlet’s framing, the scenario is a “garden variety correction,” which it characterizes as a decline of 10% or more. Under that setup, the key claim is not that these stocks are immune to losses, but that they can “hold their ground, or even gain” relative to the market if sentiment weakens and indices pull back.

“Negative beta” refers to a stock’s measured relationship to market returns, where the stock has shown behavior that offsets or diverges from the broader benchmark over a given measurement window. In practical terms, a negative or otherwise non-correlated beta profile is typically used by market strategists to flag companies that might not sell off in lockstep with the index during stressful periods.

Costco’s inclusion in the screen adds to a broader narrative often seen in retail investing, where large, cash-generative consumer platforms can be perceived as holding up better because shoppers may prioritize staples and value-oriented purchasing when economic conditions become uncertain. The Yahoo Finance write-up does not provide additional fundamentals or operational details in the materials available for this draft, so the rationale for selection rests on the stock’s historical beta behavior as presented by the outlet.

Exxon Mobil’s appearance next to Costco indicates that the screen is not confined to any single sector. The pairing suggests the methodology is driven by return characteristics rather than business model, placing companies with potentially different end markets into a single “resilience” set based on how they have tended to behave around market declines.

The post, however, does not disclose in the information available here any specific beta figures, the time period used to calculate them, or the exact statistical thresholds applied to label a stock as “negative beta.” It also does not break down whether the list is based on realized market moves during past drawdowns, model-implied correlations, or a particular set of trading windows.

There is also no disclosure in the available materials on whether the Yahoo Finance screen is purely systematic, whether it is updated frequently, or how it handles outlier periods. That matters because “beta” and related correlations can shift over time as a company’s business mix, leverage, and investor ownership evolve.