Treasury Yields Spike After Strong US PMI as Nasdaq Falls More Than 1%

Key Takeaways

• The flash US composite PMI rose to 58.4 in September from 56.0 in August, pointing to the fastest growth in private-sector activity since July 2021.
• The 10-year Treasury yield moved above 5% and reached roughly 5.06% during Wednesday's trading as investors reassessed the prospect of another Federal Reserve rate increase.
• The Nasdaq Composite closed down about 1.1% on September 23, while the S&P 500 lost roughly 0.8% and the Dow fell about 350 points.

US Stocks Fall as Treasury Yields Climb Above 5%

source: tradingeconomics

US stocks declined on Wednesday, September 23, as a stronger-than-expected reading of business activity intensified concerns that interest rates could rise further. Treasury yields climbed sharply, putting pressure on equity valuations and raising borrowing-cost concerns for companies and households.

The Nasdaq Composite closed at 26,936.04, down about 1.1%. The S&P 500 finished at 7,706.03, a decline of 0.75%, while the Dow Jones Industrial Average lost 352.10 points to 51,511.59. Small-cap stocks also weakened, with the Russell 2000 down more than 1% in the market account accompanying the move. The broad decline showed how quickly a shift in the bond market can affect different areas of the stock market.

The benchmark 10-year Treasury yield reached approximately 5.06% during the session, its highest area since 2007 at that point in the trading day. The two-year yield was around 4.87% in the accompanying market snapshot. Both figures are intraday observations, not fixed closing rates; yields continued to move as investors reacted to economic data and comments from Federal Reserve officials.

Bond yields rise when Treasury prices fall. Higher yields increase the return available on government debt, which can make future corporate earnings less attractive when those earnings are valued in today's dollars. The effect can be particularly visible in growth-oriented stocks, where investors place substantial weight on profits expected many years ahead.

Strong September PMI Revives Inflation Concerns

The flash US composite purchasing managers' index rose to 58.4 in September from 56.0 in August. The index combines responses from manufacturing and services businesses. A reading above 50 signals expansion, and September's result indicated the fastest pace of private-sector activity since July 2021.

Strong demand is positive for businesses' sales prospects, but the details of the survey also raised questions about inflation. New orders accelerated, backlogs grew and companies reported more difficulty meeting demand. The survey's input-price measure increased as supply constraints added to costs.

For investors, that combination matters more than the headline growth number alone. If businesses can pass higher costs on to customers, price pressures may persist even as the economy expands. If they cannot, margins could come under strain. Neither outcome can be determined from one preliminary survey, but both complicate the outlook for interest rates and corporate profits.

The PMI is a timely measure of business conditions rather than a direct reading of gross domestic product or consumer inflation. Its September figures are preliminary and may be revised in the final release. Traders will therefore look for confirmation in subsequent inflation, employment and activity data before treating the survey as a settled picture of the economy.

October Fed Rate-Hike Expectations Move Higher

The Federal Reserve raised its target interest-rate range by a quarter percentage point to 3.75%–4.00% on September 16. The central bank said economic activity was expanding at a solid pace while inflation remained elevated. Wednesday's PMI strengthened the case, in market pricing, for another increase at the next policy meeting.

Fed funds futures implied a probability of more than 70% for an October rate hike after the data and hawkish comments from Fed officials, according to CME Group's market commentary. That probability is a measure of traders' current pricing. It can change quickly with new data and does not mean the Fed has committed to a second increase.

The two-year Treasury yield tends to respond closely to expectations for the policy rate. The 10-year yield reflects a broader mix of expected short-term rates, inflation, growth and the premium investors demand to hold longer-dated bonds. When both rise, markets may be weighing the risk that rates stay elevated even if economic growth remains resilient.

The distinction is important for stocks. A healthy economy can support company revenue, but a higher discount rate can reduce the present value investors assign to future earnings. This tension helps explain why an upbeat business survey coincided with a decline in the major US equity indexes.

Why Higher Yields Pressure Tech and Small Caps

Technology and other growth shares are sensitive to changes in long-term yields because much of their expected value depends on future cash flows. A yield increase does not automatically mean their operating performance has weakened. It does, however, raise the hurdle for valuations at a time when investors can earn more from government securities.

Smaller companies face a related but different challenge. Many rely more heavily on external financing, and higher borrowing rates can make refinancing, investment and expansion more expensive. Their share prices can therefore respond to concerns about both financing conditions and the possibility that tighter policy eventually slows demand.

The Dow's roughly 350-point decline and the S&P 500's 0.75% loss showed that the sell-off extended beyond the largest technology stocks. Still, daily index moves reflect several forces at once, including company-specific news, oil prices and positioning. The PMI and yield surge were major features of Wednesday's session, but they should not be treated as the sole explanation for every stock move.

What Investors Will Watch Next

The immediate question is whether incoming data reinforce the picture of rapid growth accompanied by persistent price pressure. Further evidence of strong demand and rising costs could keep upward pressure on Treasury yields and support expectations of another Fed increase. Softer inflation or employment readings, by contrast, could prompt traders to reassess the October outlook.

Markets will also watch whether longer-term yields remain above 5% and how companies discuss financing costs and demand in their next earnings updates. A sustained rise in yields would affect borrowing across the economy; a short-lived spike would have different implications for corporate planning and equity valuations.

Wednesday's decline captured the market's immediate response to a strong PMI reading in an environment of elevated inflation and tighter monetary policy. The next direction for stocks will depend on whether subsequent data confirm the survey's message and how the Fed weighs growth against inflation at its October meeting.