JPMorgan traders remain cautious after Treasury market volatility

JPMorgan’s trading desks are keeping their guard up after the US Treasury market posted its worst single-day selloff in 18 months. The culprit isn’t domestic data alone. It’s a trio of geopolitical scenarios centered on the Middle East that the bank’s analysts have been quietly modeling, each carrying vastly different implications for oil, bonds, and risk assets.

The September 24 selloff sent the 10-year yield sharply higher, rattling a market that had started to price in a smoother glide path for interest rates. Strong economic data combined with escalating tensions involving Iran created the kind of toxic cocktail that makes portfolio managers reach for antacids.

Three roads, three very different destinations

JPMorgan’s framework breaks Middle East developments into three buckets: bullish, status quo, and bearish. The variable that ties them together is the Strait of Hormuz, the narrow chokepoint through which roughly a fifth of the world’s oil passes daily.

In the bullish case, diplomatic de-escalation leads to what the bank’s analysts describe as an “everything rally.” Tensions cool, oil prices stabilize, and risk assets get the green light to push higher.

Then there’s the bearish case, which JPMorgan labels with the unflinching phrase “puke everything.” In this scenario, diplomacy fails, military escalation materializes, and oil markets go haywire. The bank’s models project WTI crude spiking to somewhere between $125 and $150 per barrel, a level that would send inflationary pressures screaming back into the economy just as the Federal Reserve was hoping to declare victory.

The 60/40 portfolio under siege

One of the more pointed warnings from JPMorgan’s analysis targets the classic 60/40 portfolio. JPMorgan’s strategists have flagged this as a systemic concern, not just a temporary dislocation. If the bearish Middle East scenario materializes, widening credit spreads would compound the damage, hitting equity markets from multiple directions at once.

The MOVE index, which tracks bond market volatility the way the VIX tracks equity volatility, has been flashing elevated readings. That’s notable because bond volatility tends to be a leading indicator for broader market stress.

What traders are watching now

The immediate consequence of JPMorgan’s cautious stance is a reassessment of rate-cut expectations. Markets had been pricing in a more accommodative Fed path, but the combination of resilient economic data and geopolitical risk premiums is forcing a rethink.

The broader question is whether markets have adequately priced the tail risks JPMorgan is warning about. A spike in crude to $125 or higher would effectively import stagflation into the US economy: rising prices coupled with slowing growth.