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The S&P Looks Stable Because You're Measuring the Wrong Volatility
By Dana Jerlo profile image Dana Jerlo
3 min read

The S&P Looks Stable Because You're Measuring the Wrong Volatility

The Cboe Volatility Index closed at 15.87 at the end of September while the S&P 500 sat near all-time highs. When stocks climb, the VIX, the so-called fear gauge, typically falls. The historical correlation runs around -0.7. Right now it's broken.

Professional traders are paying steep premiums for insurance against a crash even as the index they're hedging continues to rise. That's the divergence. The S&P 500 looks calm on the surface. Underneath, institutional money is buying protection like the roof is about to cave in.

Why the Usual Gauge Misleads

The VIX measures expected volatility based on S&P 500 options prices. A reading around 19 or 20 is the long-term average. Below 15 signals complacency. Above 25 means stress. But the VIX itself is now volatile in ways it wasn't a decade ago, largely because of zero-days-to-expiration options. 0DTE contracts expire the same day they're traded, and they've flooded the market since 2022. They amplify short-term swings in the VIX without necessarily reflecting deeper fear.

What matters more is the relationship between the VIX and the index it's supposed to track. When both rise together, it means traders expect trouble even though prices haven't broken yet. That's where we are. The S&P climbs. The VIX climbs. One of them is wrong.

The Concentrated Risk Nobody Mentions

The top ten companies in the S&P 500 accounted for roughly one-third of the index's total market capitalization in 2024. Most of those are mega-cap technology stocks. If you own a Growth fund in your RRSP or TFSA, and most Edmonton investors do, you own a concentrated bet on a small group of U.S. tech companies, not a diversified portfolio.

The divergence matters because it suggests the professionals managing billions see that concentration as a vulnerability. They're hedging it. You probably aren't.

What the Pros Are Watching

The VVIX, the volatility of the VIX, has shown elevated levels in recent months. That usually happens before the broader market realizes something has shifted. Pension funds and banks don't wait for the headline to appear. They buy puts when the math stops making sense, and the cost of those puts is what pushes the VIX higher.

Central banks remain uncertain on rate paths. Geopolitical risk hasn't resolved. Earnings for the mega-caps have been strong, but they've also been narrow. A miss from two or three companies could take the whole index down, and the options market is pricing that in even if the equity market isn't.

The counterpoint: this setup can last a long time. The VIX has been elevated relative to the S&P for stretches in the past without a crash materializing. Sometimes the insurance expires worthless and the market keeps climbing. This divergence is a warning about what traders are seeing, not a guarantee of what comes next.

What This Means in Edmonton

If your portfolio is green today, that's real. If it's heavily weighted toward U.S. equities, and most Canadian equity allocations are, the volatility divergence is a reason to check your exposure. Not to panic. To check.

The question isn't whether the S&P will crash. The question is whether your portfolio can handle it if the thing the pros are hedging actually happens. Diversification across sectors, across borders, across asset types, that's the move when the insurance market and the equity market are telling you different stories.

The paint looks fine. The foundation has a crack. You can wait to see which one was right, or you can make sure your house can handle either answer.


Sources

  1. CBOE - VIX Volatility Products - 2026-09-30. https://www.cboe.com/tradable-products/vix/