Oil Price Shocks Are Testing Resilience Across Methodologies Among S&P SmallCap 600 Indices

2026-04-09 03:00:00 ET

The war in the Middle East and the subsequent surge in oil prices have been key drivers of volatility across U.S. equity segments as inflation expectations risk de-anchoring. The chart below illustrates the density and distribution of four S&P SmallCap 600 stock indices compared to oil price fluctuations since 2016. The oil price range exhibits more outliers on both ends compared to indices. On Friday, February 27 (black dot), the day before the first U.S.-Israel strikes on Iran, the four S&P SmallCap 600 equity indices traded at decade highs, while West Texas Intermediate ((WTI)) oil price stood at $67.06 — near recent lows. Then, the war began, pushing oil prices higher, settling at $99.56, in contrast to declining levels across the S&P SmallCap 600 indices two weeks into the conflict by Friday, March 13 (red dot). During this period, the average decline across the analyzed group was about 85 points, with variations observed on each index's specific profile. Historical data is available via Xpressfeed and other delivery mechanisms that investors can leverage to populate algorithms and models....

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