US stock indexes close higher Friday but post weekly losses amid bond yield volatility

Wall Street ended Friday on a high note that masked a pretty rough week. The Dow Jones Industrial Average climbed 517.80 points, or 0.98%, to close at 53,277.01. The S&P 500 added 33.21 points (0.43%) to finish at 7,674.37. The Nasdaq Composite rose 113.29 points (0.44%) to 26,180.46.

For the week, the S&P 500 dropped 1.43%, the Nasdaq fell 2.05%, and the Dow slid 0.85%, snapping recent winning streaks across all three benchmarks. The culprits: a spike in long-dated Treasury yields that rattled equity investors, rising oil prices fueled by Middle East tensions, and lingering inflation anxiety.

Treasury yields hit levels not seen since 2007

The 30-year US Treasury yield peaked at 5.327% around August 18, its highest reading since 2007. Treasury Secretary Scott Bessent’s mid-week announcement regarding increased bond buybacks helped stabilize things slightly toward the end of the week.

The yield surge was partly driven by inflation concerns that have been building for weeks. Brent crude rose 6.39% for the week while US crude climbed 5.66%, marking six consecutive sessions of gains. Those increases traced directly back to geopolitical tensions in the Middle East, particularly uncertainties surrounding the US-Iran relationship.

A Friday bounce with a footnote

Friday’s rally had a tangible catalyst. US business activity data came in stronger than expected, with the services sector posting its strongest growth in nearly two years.

It’s worth noting the divergence between the Nasdaq’s 2.05% weekly loss and the Dow’s comparatively modest 0.85% decline. Growth and tech-heavy names, which dominate the Nasdaq, tend to be more sensitive to rising interest rates because their valuations rely heavily on future earnings. When discount rates go up, those future cash flows are worth less today. The Dow, weighted more toward industrials and value names, held up better by comparison.

Oil, Iran, and the inflation feedback loop

Geopolitical uncertainties involving Iran pushed oil futures higher for six straight sessions. Brent crude’s 6.39% weekly jump is significant. Even temporary spikes can filter into consumer prices, transportation costs, and corporate margins within weeks.

Friday’s strong services data complicates the Federal Reserve’s calculus. The Fed has been navigating a narrow path between keeping rates high enough to contain inflation and not choking off an economy that, by most measures, is still expanding. Investors remained vigilant, monitoring corporate earnings and economic data releases tied to the Federal Reserve’s inflation measures as they prepared for the upcoming Jackson Hole symposia.

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