Oil Surges on US-Iran Tensions, Dragging Stocks Down

Oil jumped again today. When crude moves like that, stocks usually suffer, and today wasn't different — indexes fell as traders got nervous about what happens if the Middle East conflict gets worse. Here's the thing: every dollar oil climbs makes inflation harder to fight and earnings forecasts harder to trust, which means the Fed's rate-cutting plans suddenly look less certain.

Bond yields shot up alongside oil, which tells you investors are now worried about stagflation instead of just recession. They're essentially saying, we don't know if growth survives this, but we know prices will be sticky. That's a nasty combination for equities because rising rates kill valuation multiples, and higher oil costs crush margin expansion.

So where does this end? If hostilities cool down fast, oil settles and markets stabilize. But if the US and Iran keep poking each other, you're looking at a longer period of elevated energy costs bleeding into Q1 earnings, which nobody's really priced in yet.