Brent Oil Posts Biggest Monthly Gain Since 1988
Crude surged 63% in March as the Iran conflict triggered the largest oil supply disruption in history, reshaping global energy markets.
March 2026 will go down in commodity history. Brent crude surged 63% over the month—the biggest gain since records began in 1988—as the Iran conflict triggered an unprecedented supply disruption.
The global benchmark closed March at $118.35 per barrel, up from $72.60 at month's end in February. West Texas Intermediate followed a similar trajectory, jumping from $69 to $114.
To find anything comparable, you'd need to go back to 1990's Gulf War or the 1973 Arab oil embargo. But even those supply shocks didn't produce this magnitude of price movement in a single month.
The Disruption
When U.S. strikes against Iran began on February 28, roughly 20% of global seaborne oil transited the Strait of Hormuz daily. Within two weeks, that figure collapsed.
Iran's response—mining approaches, deploying anti-ship missiles, stationing fast attack boats throughout the waterway—effectively closed the Strait to coalition-aligned tankers. As we covered when the blockade intensified, tanker traffic through Hormuz dropped 74% from pre-conflict levels.
The ships still transiting are mostly Chinese, Indian, and Russian-flagged vessels carrying oil to non-coalition countries. For European and Asian allies, oil now routes around Africa, adding weeks and billions in shipping costs.
The Numbers
| Date | Brent Price | Change |
|---|---|---|
| Feb 28 (conflict start) | $72.60 | - |
| March 7 | $89.15 | +23% |
| March 14 | $101.20 | +39% |
| March 21 | $109.75 | +51% |
| March 31 | $118.35 | +63% |
That's 37 years of Brent price data, and nothing comes close. The 2008 spike to $147 took six months. The 2022 Russia-Ukraine surge topped out at 30% in a month. This move doubled the previous record.
Demand Destruction vs. Supply Shock
Classical economics says higher prices should reduce demand and incentivize new supply. Both are happening, but slowly.
Gasoline consumption in the United States has declined roughly 8% from year-ago levels as pump prices approach $6 per gallon in California and $5 nationally. European demand is down further as governments push conservation measures.
On supply, U.S. shale producers are ramping drilling, with the Permian Basin rig count up 15% since February. Strategic reserves are being tapped globally. OPEC+ members outside the conflict zone have quietly increased output.
But none of this replaces 17 million barrels per day of Hormuz transit capacity overnight. The market is structurally short, and will remain so until either the Strait reopens or alternative supply reaches scale.
Inflationary Implications
Oil feeds directly into everything. Transportation costs, manufacturing inputs, agricultural production, heating bills—all are repricing higher.
The Federal Reserve faces an impossible situation. Headline inflation will run hot regardless of monetary policy. Rate hikes can't drill more wells or open shipping lanes.
Markets have begun pricing in potential rate hikes despite economic softness, reflecting the Fed's dilemma. The last thing the economy needs is tighter financial conditions, but the last thing inflation needs is accommodation.
What Peace Would Mean
If President Trump's "two to three weeks" timeline proves accurate—a big if—oil markets would need to reprice dramatically.
A credible path to reopening Hormuz would likely push Brent back toward $85-95 fairly quickly. Full normalization could see prices return to pre-conflict levels in the $70s over several months.
That would be enormously bullish for equities, which have been crushed by energy-driven inflation fears. It would be painful for energy stocks, which have rallied 25% year-to-date on the supply crunch.
The Hedging Problem
One overlooked consequence of the March spike: hedging markets are broken.
Airlines, shipping companies, and refiners typically hedge fuel costs months in advance. But backwardation in futures curves—where near-term contracts trade at premiums to longer-dated ones—has made hedging prohibitively expensive.
United Airlines reported that Q2 fuel costs will be 40% above their hedged assumptions. Delta warned of similar pressures. The entire transportation sector is flying blind on costs.
For companies that can't hedge, earnings become a function of geopolitics rather than operations. Q1 results will show exactly how painful that exposure has become.
Looking Ahead
April opens with Brent around $102, down from crisis peaks but still historically elevated. The direction from here depends almost entirely on diplomatic progress.
If talks advance, oil could give back half the March gains within weeks. If negotiations collapse—or worse, escalate—the June Brent contract at $125 might look cheap.
Commodity traders have learned not to predict geopolitics. But they have learned to price risk. And right now, the risk premium in oil is as high as any of them can remember.
Thirty-seven years of data, and March 2026 broke the record. That's the kind of month that ends careers and makes fortunes.
For more on the economic impact, see our Economy coverage.