Brent crude oil prices have tumbled nearly 19% over the past month, hitting a 13-week low of $85.82 per barrel on June 12, 2026. This sharp decline follows growing optimism around a potential US-Iran Memorandum of Understanding (MoU) aimed at reopening the Strait of Hormuz and easing geopolitical tensions in West Asia. The news triggered an immediate market reaction, with shares of Bharat Petroleum Corporation Limited, Hindustan Petroleum Corporation Limited, and Indian Oil Corporation Limited surging 5-6%, while Reliance Industries gained 2.4%. But this rally isn’t just about sentiment—it’s about the direct impact on the economics of these businesses.
For oil marketing companies, crude oil is the single largest input cost. A 5% intraday decline in Brent crude directly reduces procurement costs for BPCL, HPCL, and IOC. This isn’t marginal—it’s substantial. Consider the scale: IOC, India’s largest refiner, processed a record 75.5 million metric tonnes of crude in FY26. Even a small percentage decline in crude prices translates into massive absolute savings on working capital and cost of goods sold. Transcripts
The gross margin impact is equally significant. All three OMCs showed improvement in refining margins in FY26 compared to FY25. BPCL’s Gross Refining Margin (GRM) jumped to $11.74 per barrel from $6.82, while HPCL’s average GRM improved to $8.79 from $5.74. The sustained 19% decline in crude prices should expand these margins further in the upcoming quarter, provided crack spreads—the difference between crude oil and refined product prices—remain supportive. Transcripts
Reliance Industries tells a different story. Its business model is fundamentally different from the standalone OMCs. While O2C (Oil to Chemicals) remains Reliance’s largest revenue contributor at 56.86%, the company also generates substantial revenue from Retail (30.27%) and Digital Services (14.12%). This diversification provides a natural hedge against volatility in any single segment. Transcripts
More importantly, Reliance’s refining operations are integrated with petrochemicals. When crude prices decline, the benefit isn’t limited to refining margins alone—it cascades through the petrochemical value chain.
The company’s ability to process over 200 different grades of crude, sourced from across Canada, South America, the Middle East, West Africa, and Europe, gives it exceptional flexibility to optimize its crude slate based on price differentials. Transcripts +1
The sharp intraday price drop creates interesting dynamics around inventory valuation, but the impact varies significantly based on accounting policies.
This means older, higher-cost inventory is sold first, creating potential for marketing inventory gains when replacement costs decline. BPCL already demonstrated this with a marketing inventory gain of ₹1,275 crore in Q4 FY26 compared to ₹523 crore in the prior year. Transcripts +1
In contrast, IOC and Reliance use the weighted average cost method, which smooths price changes over the inventory holding period. IOC maintains an average inventory holding period of approximately 47 days, meaning price benefits will be realized gradually over about 1.5 months rather than immediately. The 5% decline in Brent crude therefore creates more pronounced immediate gains for FIFO-based OMCs (BPCL, HPCL) compared to weighted average companies (IOC, Reliance). Transcripts +1
The working capital benefits for Indian OMCs are substantial. With Brent crude declining 19% over the past month, procurement costs for new crude purchases drop significantly. For IOC, with its ₹98,665 crore inventory base and 47-day holding period, this translates into working capital savings of approximately ₹2,800-3,000 crore monthly. Lower inventory values also reduce carrying costs and interest expenses on bank borrowings. Transcripts
BPCL and HPCL, which hypothecate their inventories to banks as security for cash credit facilities, see direct benefits in their borrowing capacity requirements. The reduction in working capital pressure improves cash flow metrics across all three OMCs, strengthening their ability to service debt and invest in growth initiatives. Transcripts
Here’s where the story gets complicated for state-owned OMCs. India’s auto fuel market operates under a government-administered pricing mechanism linked to international benchmarks rather than pure market forces.
This regulatory constraint fundamentally limits margin expansion potential. Even as crude input costs decline significantly, BPCL, HPCL, and IOC cannot fully pass through these benefits to consumers or capture them as profits because retail prices are controlled. The evidence is stark: state-owned OMCs kept fuel prices unchanged for 11 weeks despite a surge in input costs during the Middle East conflict, demonstrating limited pricing autonomy.
The lag effect between crude price declines and retail price adjustments creates temporary financial benefits. When crude prices decline but retail prices remain elevated, OMCs benefit from selling inventory procured at higher costs. However, these benefits are temporary and will diminish as the government adjusts retail prices downward to reflect lower crude costs or as inventory turns over to lower-cost procurement.
Reliance Industries enjoys significantly greater pricing flexibility in the retail fuel market. The company’s Jio-bp retail network has grown to 2,199 outlets with strong volume growth—MS & HSD volumes increased 27.4% year-on-year in Q4 FY26. Unlike state-owned OMCs, Reliance can adjust pricing faster to reflect cost changes and competes on value differentiation through premium fuel offerings and value-added services rather than being constrained by uniform pricing mandates. Transcripts
This fundamental difference in regulatory treatment creates a competitive advantage for Reliance in navigating crude oil price volatility. While state-owned OMCs face structural constraints that limit their ability to capture margin benefits, Reliance can respond more dynamically to market conditions.
The potential reopening of the Strait of Hormuz represents a transformative opportunity for Indian refiners, but the impact will be uneven. Currently, approximately 40% of India’s crude oil imports pass through this strategic waterway. Reliance is best positioned to capitalize on the reopening due to its superior supply chain resilience, 200+ crude grade processing capability, global sourcing network, and time-charter fleet ownership.
During the Strait of Hormuz crisis, Reliance demonstrated exceptional agility by successfully securing cargoes from alternative sources including Venezuela, Russia, Brazil, and Mexico when it lost 40-50% of its usual Middle East supply.
State-owned OMCs face greater challenges. While BPCL has established an International Trade & Risk Management setup with a dedicated Crude Oil Trading Desk, and HPCL has enhanced procurement efficiency through its newly established trading desk, both lack Reliance’s scale and flexibility. IOC maintains the most diverse crude portfolio among Indian refiners with 268 grades, but all three state-owned OMCs are constrained by regulatory frameworks and limited crude grade flexibility compared to Reliance. Transcripts
Historically, Indian refiners had significant exposure to Iranian crude. BPCL was taking 2 million tonnes per year on average when sanctions were not in place. However, based on available corporate disclosures, there is currently no specific information about Iranian crude oil exposure for any of the four companies in their recent annual reports. This absence likely reflects compliance with international sanctions regimes and India’s energy security strategy focusing on supply diversification. Transcripts
If sanctions are lifted as part of the US-Iran MoU, Iranian crude could provide $2-5/bbl cost advantages through discounts typically offered on comparable grades. For BPCL’s potential 2 MMT/year, this could mean $30-50 million in annual savings. However, the uncertainty around MoU finalization—pending release of frozen funds, suspension of oil sanctions, and lifting of the US naval blockade—creates significant operational planning challenges.
The current stock price surge has pushed OMC valuations to interesting levels.
BPCL and HPCL trade at P/E ratios of 4.81x and 4.31x respectively, all at the lower end of historical ranges for companies in this sector.
This deep valuation reflects the market’s justified caution given the high uncertainty surrounding MoU finalization. The key risks to the current positive sentiment are substantial: MoU negotiation delays beyond the 30-day timeline, postponement of Strait of Hormuz reopening, geopolitical escalation triggering crude price rebounds, and regulatory constraints limiting earnings capture.
The 5-6% stock price surge in BPCL, HPCL, IOC, and Reliance Industries is approximately 60% driven by short-term sentiment around US-Iran MoU optimism and 40% by sustainable earnings improvement from lower crude costs. Current valuation multiples suggest significant undervaluation relative to historical averages, but this reflects the high uncertainty surrounding the geopolitical situation.
Investors should maintain cautious optimism with scenario-based positioning rather than assuming the current positive sentiment will be sustained. The next 30-60 days will be critical in determining whether this represents a sustainable earnings improvement opportunity or another short-term sentiment-driven rally that reverses on geopolitical headlines. For now, Reliance’s integrated model and operational flexibility provide it with a distinct advantage over state-owned OMCs in navigating this complex environment.
