3 Big Myths About Delta Air Lines, Inc. (DAL)’s Refinery

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Delta Air Lines, Inc. (NYSE:DAL) took Wall Street by surprise when it decided to purchase an oil refinery in Trainer, Penn., from Phillips 66 (NYSE:PSX) last year. Since then, many observers have criticized the deal, arguing that Delta’s refinery strategy is doomed to failure. However, much of the criticism is based around three big myths. The truth is that Delta’s refinery gambit will probably succeed.

Myth No. 1: If Phillips 66 couldn’t make it work, Delta can’t either
Perhaps the most common criticism of Delta’s refinery purchase is that the company should not expand beyond its core airline business. Phillips 66 had idled the Trainer refinery prior to selling it and was unwilling to make the necessary investments to keep the refinery running. As the largest independent refiner in the U.S., Phillips 66 clearly has significant expertise in refinery operations. Thus, many industry observers believe that if the Trainer refinery would have been a bad investment for Phillips 66, it will be an even worse investment for Delta.

Delta Air Lines, Inc. (NYSE:DAL)This overlooks a key insight from modern portfolio theory. Investors should demand a higher return for accepting less diversification, and thereby taking on more risk. For Phillips 66, which already owns 15 refineries, owning a “marginal” refinery adds risk that cannot be justified by the expected returns. If the refining crack spread (the price difference between a barrel of crude oil and a barrel of refined products) were to drop, the Trainer refinery would likely become unprofitable. Instead of investing money in the Trainer refinery, it made sense for Phillips 66 to sell it for $180 million and use the cash to fund capital expenditures at other refineries, and to return money to shareholders.

By contrast, for Delta, owning a refinery allows the company to hedge against an increase in the market crack spread. While the refinery subsidiary (Monroe Energy) could lose money if the crack spread decreases, Delta would still benefit in that scenario, because a lower crack spread translates to lower jet fuel prices (holding crude oil prices constant). Thus, owning a refinery could potentially reduce Delta’s risk through diversification, which explains why Delta is willing to operate an asset that Phillips 66 wanted to divest.

The only remaining risk for Delta is that operating costs for the refinery come in higher than projected.  However, barring unexpected maintenance issues, I assume that the long-term costs of operating the refinery can be projected fairly accurately. If Delta did its due diligence before acquiring the refinery, this should not pose a problem. The refinery is being overseen by a 25-year refining industry veteran, so the plant is likely to be managed competently.

Myth No. 2: Delta should just “hedge” instead of owning a refinery
Some people have responded to the diversification argument by claiming that Delta could just “hedge” using financial derivatives. However, this argument is based upon a fundamental misunderstanding of the problem. Delta already hedges against changes in the price of crude oil. By contrast, the Trainer refinery acquisition was designed to help Delta hedge against changes in the crack spread.

It is much more difficult to hedge against changes in the jet fuel crack spread. Jet fuel swaps are the only way to fully eliminate the risk of fuel price changes, but these instruments are expensive, illiquid, and not typically available in sufficient quantity for an airline of Delta’s size. Instead, airlines often use derivatives tied to New York heating oil, which is an exchange-traded commodity. However, the correlation between jet fuel and heating oil is far from perfect. For example, the premium of Gulf Coast jet fuel over New York heating oil dropped from $0.109 per gallon to $0.018 per gallon from 2008 to 2009. More recently, the premium has been around $0.05. These fluctuations show why hedging with heating oil derivatives is not fully satisfactory. The best way to minimize volatility in the jet fuel crack spread is to own a refinery.

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