JPMorgan Chase & Co (NYSE:JPM) shares are dropping on Wednesday. CEO Jamie Dimon used an investor conference to flag higher costs and temper expectations for how long the bank's earnings can stay at current levels.

Higher Expense Guidance Hits Margin Expectations

Reuters reported that Dimon told investors JPMorgan's 2026 expenses could end up about $1 billion above prior plans. The bank lifted its full-year expense outlook to roughly $106 billion, up from an earlier estimate of $105 billion, tying the increase to stronger business activity.

For a bank that has been printing strong results, any sign that costs are rising faster than expected immediately raises questions about future profitability. Stephan Biggar at Argus Research stated that higher expenses tend to unsettle investors, especially when management is already cautioning that earnings are unlikely to remain at such elevated levels and could move lower.

High Expectations Make Margin Warnings Sting

JPMorgan has been executing well for years, and analysts broadly believe investors expect that strength to continue. That is exactly why any hint that margins might get squeezed draws so much attention.

Dimon also reiterated that the bank is actively looking for merger and acquisition opportunities and floated the idea of potentially deploying $10 billion to $20 billion on a deal over the next couple of years. While he did not specify targets, areas like fintech or artificial intelligence could be in play.

Strong Fee And Trading Outlook Not Enough To Offset Cost Jitters

Dimon did offer some upbeat commentary on the revenue side. He expects investment banking fees to climb 10% or more in the second quarter, with a busy pipeline of large deals as corporate confidence, financing conditions and boardroom appetite for transactions all improve.

He also said the markets business, which includes trading, is on track to grow about 11% this quarter and could even beat that figure.

Dealmaking has picked up in 2026 despite earlier caution tied to the Middle East conflict and worries about how artificial intelligence might disrupt older software businesses. Dimon described equity capital markets as poised for a big year, with sponsors and companies both active and "a lot of exuberance" in the air.

JPM Shares Are Dipping

JPM Price Action: JPMorgan Chase shares were down 2.83% at $298.05 at the time of publication on Wednesday, according to Benzinga Pro.

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