The refining windfall from tight diesel supply persists, but further upside for U.S. refining giant Par Pacific (PARR.US), whose shares have surged over 138% year-to-date, now requires stronger new catalysts.
On October 15, Goldman Sachs downgraded the stock from "Buy" to "Neutral," and shares ultimately fell 5.56% to close at $83.74.
Despite the sharp drop, the stock still gained about 2.26% for the week through Thursday, up approximately 2.60% for October, with year-to-date gains reaching 138.30%; compared to the intraday high of $90.74 on October 14, the latest close represents a pullback of about 7.71%, suggesting that short-term profit-taking has intensified notably, though the massive gains driven by energy supply tightness amid Middle East geopolitical turmoil have not disappeared.
Notably, Goldman Sachs analysts adopted a "downgrade rating, raise target price" combination: the target price was lifted from $90 to $94, implying about 12.3% upside from the latest close.
The two are not contradictory—stronger industry refining margins support higher earnings forecasts and target prices, but asset value re-rating, policy exemptions, and other positives are already well reflected in the stock price, while rising freight costs may compress further earnings upgrade potential.
The market is beginning to ask how much profit beyond current expectations this company can still generate.
Par Pacific fell nearly 6% in Thursday trading. Goldman Sachs downgraded the energy company focused on refining capacity from "Buy" to "Neutral" with a $94 target price, the core rationale being that after key catalysts have materialized, the stock's outlook has become more balanced.
The Goldman Sachs team led by analyst Alexa Petrick said the firm still recognizes the value of Par Pacific's asset portfolio but believes its refining business value is now more fully recognized by the market, and the catalytic effect from the small refinery exemption program has largely played out.
Although Petrick's Goldman Sachs team raised Par Pacific's earnings forecasts to reflect updated industry refining margin expectations—a direction consistent with Goldman Sachs' adjustments to other covered refiners—Goldman Sachs expects the company's earnings forecast upgrades to be weaker than peers, as elevated freight costs are expected to drag on realized refining margins.
The Goldman Sachs analyst team believes that market consensus has not fully accounted for the adverse impact of transportation costs, creating risk of earnings estimate downgrades.
With multiple catalysts already reflected in the stock price, Petrick believes that for Par Pacific to gain further upside, it needs either significantly improved profitability of its Hawaii operations under normal market conditions or a notable jump in shareholder returns.
What exactly is Par Pacific?
Par Pacific's core business covers refining, energy logistics, and fuel retail: it owns four refineries in Hawaii, Washington State, Wyoming, and Montana, with total crude processing capacity of approximately 219,000 barrels per day, supported by storage and transportation, pipelines, terminals, and retail networks.
The Hawaii operations serve aviation, ground transportation, and power generation fuel demand, making regional supply-demand dynamics and transportation costs for products like jet fuel and diesel particularly important to its profitability.
The strong margin cycle has already begun translating into results: in the second quarter of 2026, the company's net income attributable to shareholders reached $462.1 million, compared to $59.5 million in the same period last year; adjusted EBITDA rose from $137.8 million to $571.3 million.
However, the Hawaii segment's adjusted gross margin of $57 per barrel for the quarter included a favorable pricing lag contribution of $11.49, which cannot be entirely viewed as a sustainably replicable earnings level.
"Favorable pricing lag contribution" refers to sales contract pricing adjustments lagging behind market changes, temporarily boosting refining profits. For example, some refined product contracts are settled based on the average price of the previous month or week; when market prices decline, the company may still sell at previously higher prices, resulting in actual gross margins exceeding estimates based on current market prices.
Of Par Pacific's Hawaii operations' second-quarter adjusted gross margin of $57 per barrel, approximately $11.49 came from this pricing timing difference, accounting for about 20%. This portion of gains varies with price movements and cannot be directly viewed as normal profitability; when prices rise, pricing lags may actually drag on profits.
Diesel shortage sustains refining super-windfall, but shipping costs are siphoning off profits
For Par Pacific, energy supply risks have not yet receded. On October 15, Brent crude futures closed at $105.92 per barrel, down slightly 0.1%; WTI rose about 3% to close at $97.97 per barrel.
Declining U.S. inventories supported WTI, while attacks on Middle East shipping, escalating conflict between Saudi Arabia and Houthi forces, and Ukraine's renewed strikes on Russian refining facilities continued to disrupt energy transportation and refined product supply.
Although the International Energy Agency agreed to release over 20 million additional barrels of diesel, and the U.S. is considering relaxing some shipping restrictions, these measures are mainly aimed at alleviating supply pressure and are not yet sufficient to prove that geopolitical risks have systematically subsided.
Diesel crack spreads more directly reveal the benefit mechanism for refiners. ING disclosed that the ICE diesel crack spread was approximately $73 per barrel on October 7; although lower than the level slightly above $90 in September, it remains significantly elevated; the strategic reserve release has provided more noticeable relief to the near-month market, while forward spreads remain supported by supply tightness.
For refiners, what truly matters is the spread between products like diesel and jet fuel relative to crude oil, rather than a one-directional rise in crude prices: when refinery damage and export disruptions make refined products scarcer than feedstock, refineries able to maintain production have the opportunity to earn higher processing margins.
Whether high crack spreads translate into high profits depends on how much of the spread companies actually retain. Hawaii's geographic isolation can raise import substitution costs and support local product prices, but refineries depend on maritime shipping for feedstock procurement, and freight, insurance, and route adjustments also drive up the landed cost of crude.
Therefore, a strong European diesel benchmark does not mean Par Pacific can expand its realized gross margin proportionally. This is precisely the divergence Goldman Sachs is concerned about: industry earnings forecasts are still being revised upward, but the company may lag peers due to transportation cost erosion and could even face consensus estimate downgrades.
Some media reported on October 9, citing data from shipbroker SSY provided through LSEG, that the VLCC charter cost for 2 million barrels of crude from the U.S. Gulf Coast to China rose to approximately $80 million, equivalent to $40 per barrel, up about 365% from $8.60 before the war broke out in February.
ING also cited Clarksons data noting that global crude tanker average daily earnings had surpassed $500,000 in early October, reaching approximately 10 times the 2025 average. Route diversions, ship-to-ship transfers, and a shortage of compliant vessels continue to tie up effective capacity, meaning refineries dependent on seaborne feedstock must pay higher landed crude costs, and the profit increment from high diesel crack spreads may therefore be partially consumed by transportation costs.
Policy benefits also have their realization rhythm. Small refinery exemptions mainly reduce compliance burdens under the Renewable Fuel Standard, including related RIN compliance credit costs. Par Pacific previously received partial annual exemptions and recognized approximately $199.5 million in related benefits in 2025, indicating that the profit value released by policy has been considerable.
As this value becomes recognized by the market, further stock price gains require the Hawaii operations to maintain higher profitability under normal market conditions, or to convert cash generation capability into significantly stronger shareholder returns; relying solely on repeating already-realized policy dividends will gradually lose momentum.
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