Refining the Numbers: A Cautionary Tale of Geopolitics and Profit-Taking

The oil refining sector has seen a remarkable surge in 2026, with Marathon, Valero, and HF Sinclair shares gaining over 80% against an 11% S&P 500 gain. The WTI 3-2-1 crack spread has nearly tripled since January, a staggering figure that has left many investors wondering if this is the new normal.

Historical data suggests otherwise. Five instances of similar performance by the S&P 500 Oil & Gas Refining & Marketing Sub Industry group have been followed by negative returns over the next six months. The average return was a dismal -10.1%. This doesn’t imply that refiners will suddenly collapse, but rather that investors should be cautious of getting caught up in the hype.

Geopolitics are driving this surge, with hostilities in the Strait of Hormuz and between Russia and Ukraine contributing to significant refining margins. However, these premiums are inherently reversible. A ceasefire in the Gulf would likely send crack spreads sharply lower – taking refiners’ profits with them.

Investors might argue that such a scenario is unlikely to play out anytime soon. Even if it does, investors should recognize that cyclical businesses tend to look cheapest at their peak. Refining companies often experience fluctuations in profitability due to oil price and geopolitical events. This is not unique to the current market; Phillips 66 and Marathon Petroleum have had trailing P/E ratios ranging from mid-single digits to 35-40 over the past decade, excluding the pandemic period.

As of writing, Nymex 3:2:1 spreads remain elevated, with September at $69.92 and August 2027 at $44.38 – a far cry from the average between February 2016 and February 2026, which was $21.68. This suggests that investors may be overpaying for refiners’ shares in anticipation of persistently high margins.

High prices can indeed lead to demand destruction, but it takes time for production to normalize. If product markets remain short, mid-cycle cracks might genuinely reset higher – meaning today’s multiples aren’t as peak-ish as they seem, especially if Hormuz stays hot into year-end.

For those who have ridden this trade all the way up, it may be time to take profits and consider positioning for crack normalization on any de-escalation headline. A similar strategy could be applied to other major refiners like Phillips 66 or Valero Energy.

The Art of Mean Reversion

Investors often get caught up in the excitement of a winning trade, but true long-term success lies in recognizing when it’s time to take profits and mean revert. This is especially crucial for cyclical businesses like refining, where profitability can fluctuate wildly due to external factors.

The current surge in refiners’ shares may have been fueled by geopolitical tensions, but history suggests that such gains are often short-lived. As the market adjusts to changing circumstances, investors should be prepared to adapt their strategies and take profits when necessary – rather than riding a potentially doomed horse all the way down.

The Consequences of Overpaying

Investors who overpay for refiners’ shares in anticipation of persistently high margins risk being caught out by mean reversion. This can have severe consequences, including significant losses if the sector corrects more sharply than expected.

By recognizing the cyclical nature of refining companies and the inherent volatility of their profitability, investors can avoid getting caught up in the hype and take a more measured approach to investing. It’s not about timing the market or making bold predictions; it’s about understanding the underlying dynamics at play and being prepared for the inevitable mean reversion.

The Refining Industry: A Wild Ride

The refining industry is inherently volatile, with profitability subject to fluctuations in oil prices and geopolitical events. This makes it a challenging sector for investors to navigate, especially during times of heightened uncertainty.

By recognizing the cyclical nature of refiners’ profitability and the importance of mean reversion, investors can better position themselves for long-term success – rather than getting caught up in the excitement of short-term gains.

The Way Forward

Investors would do well to keep a close eye on developments in the Gulf and between Russia and Ukraine. A ceasefire or de-escalation could send crack spreads sharply lower, taking refiners’ profits with them. In anticipation of such an event, investors may want to consider positioning for mean reversion – rather than clinging to their current positions.

This is not a call to sell off all shares in the refining sector, but rather a reminder that investors should be cautious and prepared for the inevitable mean reversion. By taking profits when necessary and adapting to changing circumstances, investors can ride out the volatility of this wild and unpredictable industry – and come out on top.