The hook
WTI Crude Oil CVOL’s (CLVL) 30-day moving average of volatility found a floor and reversed course higher and closed July at 67.69 alongside a sharp rally in the underlying WTI futures price.
The numbers
Level: 67.69 | MoM: +23.86
2026 YTD Min / Median / Max: 30.94 / 64.24 / 142.67
Percentile Rank YTD: 55th percentile (Absolute Level), but 90th percentile (Velocity of Move)
The early summer saw oil volatility swoon lower, but uncertainty increased in mid-July. The 30-day CLVL average reversed a months-long decline as the underlying futures price jumped higher.
The chart
The story
In stock markets, falling futures prices usually lead to rising volatility. It is tempting to apply that same equity-centric framework to commodities. Crude oil is a different beast, and 2026 highlighted that.
In the Crude Oil options market, the correlation between price and volatility is not fixed; the physical market determines the direction of volatility. Historically, when oil prices are driven by demand expectations, we see the traditional inverse relationship familiar to equities. When the market is dominated by supply-side shocks and geopolitical positioning, price and volatility surge.
We saw this exact script play out during the first quarter of this year, when both the futures price and the CVOL index peaked together in April. After a brief summer cooling period where both lines bled lower, July revived the trend.
On July 1, WTI futures sat quietly at $68.58. The CVOL index was resting near its recent lows at 41.29. More importantly, the 30-day moving average of volatility had spent the late spring compressing, leading some to wonder if the market had entered a summer lull or was confirming cessation of hostilities in the Middle East.
Instead, a massive bid entered the energy market. By July 23, WTI futures had jumped to $92.19.
A 34% rally over three weeks saw the 30-day WTI CVOL moving average find a floor, stop compressing, and march upward. CVOL surged alongside the price rally, peaking at 76.63. The market didn't panic downward; it panicked upward.
As the underlying price moved higher, the options market scrambled for upside coverage. The demand for out-of-the-money calls structurally pushed the entire variance strip higher. This is a classic right-tail event where the consumer's fear of rising prices drives volatility, proving once again that in oil, spikes can happen in both directions.
In August, the trajectory of this 30-day trendline and its correlation to the underlying price is the primary dynamic I'll be tracking.
What surprised me - Treasury Volatility
What surprised me in July was the subtle change in Treasury yield curve volatility. The CVOL term structure for Treasury yields was telling a story about where the market's uncertainty was focused.
At the start of the month, volatility expectations for the 2-year and 30-year Treasury yields were moving together. But after the first week, they decoupled. As you can see in the chart, uncertainty in the short end of the curve (2-Year CVOL) became much more elevated relative to the long end (30-Year CVOL), which remained more contained.
This type of divergence often points to a market that is far more worried about near-term events than it is about the long-term economic picture. The short end of the curve became unanchored while the long end held its ground. It was a quiet but significant shift in the market's assessment of risk.
The nugget: What CVOL actually measures
Every month, I break down one mechanic of the CVOL index to explain how it works under the hood. This month: Construction.
It is tempting to look at CVOL and think of it purely as "at-the-money (ATM) implied volatility." It isn't. CVOL is a variance-based measure. Instead of just looking at the options right at the current market price, the CVOL methodology reads the entire options strip to capture information from out-of-the-money calls and puts.
By calculating the implied variance across the full surface of strike prices, CVOL incorporates the market's expectation of extreme tail risks, not just the base case. That is exactly why it captured the upside panic in WTI this month so accurately. It doesn't just measure what the market thinks will happen today; it measures what the market is willing to pay to insure against what could happen tomorrow.
The desk table
July 2026 - Top Movers & Notable Levels
|
Product |
Description |
July Close |
Peak July CVOL |
Largest Daily Move |
Volatility (Std Dev) |
|---|---|---|---|---|---|
|
CLVL |
WTI Crude Oil |
67.69 |
76.63 |
24.02 |
11.01 |
|
TUVY |
2-Yr Treasury (Yield) |
112.92 |
119.61 |
20.69 |
8.72 |
|
S1VL |
SOFR 1-Yr Midcurve |
119.67 |
119.67 |
7.10 |
3.53 |
|
USVY |
30-Yr Treasury (Yield) |
103.15 |
103.14 |
18.92 |
7.57 |