The 30-year Treasury yield climbed to 5.281% on July 31, the highest it has been since 2007. That single data point tells you most of what you need to know about the current state of the world’s most important bond market: it’s under serious pressure, and the ripple effects are spreading fast.

The roughly $30 trillion US Treasury market, long considered the safest corner of global finance, is now handing losses to investors who bought in at lower yields. Bond prices move inversely to yields, so every tick higher in rates means existing holdings lose value.

What’s driving yields higher

Geopolitical tension, particularly the conflict in Iran, has pushed oil prices higher and rekindled inflation concerns. When energy costs spike, it feeds through to almost everything else in the economy, making it harder for the Federal Reserve to justify cutting rates even if growth softens.

Then there’s the fiscal picture. Outstanding US debt sits near $31.5 trillion, and the government continues running significant deficits. More debt issuance means more supply hitting the market, which puts downward pressure on prices and upward pressure on yields.