Since the outbreak of the US-Israeli conflict with Iran in late February 2026, the six largest Wall Street banks have posted one blockbuster quarter after another. It’s a paradox that isn’t really one: market volatility — the very thing savers and businesses dread — is precisely what trading desks feed on.
Numbers That Boggle the Mind
On July 14, 2026, five of the biggest US banks reported earnings on the same day, and the results surprised even the most bullish analysts. JPMorgan Chase, the nation’s largest bank by assets, posted quarterly profit of $16.9 billion, once again driven by its equities trading division, which “took advantage of market volatility triggered by the war in Iran.” Revenue in that division jumped 35% year-over-year, and equity markets revenue soared 86%.
According to several financial outlets, JPMorgan’s profit — including gains on its equity holdings — actually came close to $21 billion for the quarter, an all-time record for the bank.
Goldman Sachs was no exception: the investment bank also handily beat forecasts, lifted both by conflict-driven volatility and by SpaceX’s record-breaking IPO, which Goldman co-led. Its merger-advisory fees rose 55%, and in the first half of 2026 alone it advised on $1.2 trillion in announced mergers and acquisitions — an unprecedented pace for any investment bank, putting it $425 billion ahead of its nearest rival.
All told, in the second quarter of 2026 alone, the five biggest banks combined (JPMorgan, Bank of America, Goldman Sachs, Citigroup and Wells Fargo) posted roughly $49 billion in combined profit. In the first quarter, the six largest US banks — those five plus Morgan Stanley — had already collectively booked nearly $48 billion in profit, well above year-earlier levels.
Why Does War Benefit the Banks?
The mechanism is no mystery to market professionals, even if it startles the general public. A trading floor doesn’t make money when markets are calm — it makes money when they move. Every geopolitical jolt — a military strike, a rumored ceasefire, a partial closure of the Strait of Hormuz — triggers waves of buying and selling across stocks, currencies and commodities. Every transaction generates fees.
Since the first US-Israeli strikes on February 28, 2026, bond, oil and stock markets have swung wildly with each twist of the conflict and every dashed hope of a truce. That chronic instability has directly fueled investment banks’ trading revenues.
On top of that comes an indirect effect: the war slowed, then unleashed in waves, mergers-and-acquisitions activity and IPOs — two highly lucrative businesses for investment banks, which collect substantial advisory fees on every deal.
Goldman Sachs itself acknowledges as much in black and white in its quarterly financial report filed with the US securities regulator (SEC): the Iranian conflict has had “significant implications for the global economy,” combining disrupted oil supply, higher oil prices and heightened equity-market volatility — precisely the ingredients of the trading desk’s playbook.
A Paradox That Goes Beyond the Banks
This phenomenon isn’t confined to the banking sector. Major oil companies — especially European majors with large trading arms, such as TotalEnergies — have seen profits surge on the back of price swings following the partial closure of the Strait of Hormuz, a route for roughly a fifth of the world’s oil and gas. Defense contractors, for their part, are reporting record order backlogs, led by Lockheed Martin, Boeing and Northrop Grumman, buoyed by allied nations rearming.
Meanwhile, households and non-financial businesses bear the flip side of that same volatility: higher energy prices, costlier freight, and mounting uncertainty for long-term investment. The conflict has thus become a vast transfer of wealth, in which the very instability harming the real economy is simultaneously enriching a handful of financial and industrial players positioned to capitalize on it.
At a Glance
- Q1 2026: the six largest US banks combined for nearly $48 billion in profit.
- Q2 2026: five of them posted roughly $49 billion in combined quarterly profit.
- JPMorgan: record quarterly profit of nearly $21 billion (including gains).
- Goldman Sachs: M&A advisory fees up 55%, with its M&A backlog at a five-year high.
- Mechanism: market volatility, driven by the twists and turns of the US-Israeli conflict with Iran since February 28, 2026, has mechanically boosted investment banks’ trading and advisory revenues.