Weekly Market Recap & Week Ahead August 17–21, 2026Market Performance Major indexes ended a volatile week lower, with all three snapping multi-week winning streaks after a sharp bond market selloff pressured stocks. Index Weekly Change Friday Close S&P 500 -1.4% 7,674.37 Nasdaq Composite -2.0% 26,180.46 Dow Jones Industrial Average -0.8% 53,277.01 Russell 2000 -1.6% 3,017.87 What Drove the Week The week's dominant story came from the bond market rather than stocks. The U.S. national debt surpassed $40 trillion for the first time, and long-dated Treasury yields surged as investors demanded more compensation to fund continued deficit spending. The 30-year yield climbed to its highest level in decades, pressuring growth and technology names in particular. Treasury Secretary Scott Bessent moved to expand the government's long-term debt buyback program in an effort to steady the long end of the curve; yields initially eased on the announcement before reversing higher. Renewed concern over the U.S.-Iran conflict also weighed on sentiment early in the week, with oil prices and Treasury yields both jumping Monday on fears the conflict could escalate further. Healthcare was the notable bright spot. Moderna and Merck announced positive late-stage trial results for an experimental personalized mRNA cancer vaccine, sending Moderna shares sharply higher on the news and helping healthcare become the best-performing S&P 500 sector on the week. Retail earnings were mixed to positive, with Ross Stores topping expectations and issuing upbeat guidance. Stocks recovered some ground Friday after a report showed U.S. business activity grew at its fastest pace in more than four years. A Note on Volatility Weeks driven by bond market moves can feel disorienting, since the connection to stock prices isn't always obvious in the moment. Higher long-term borrowing costs affect everything from mortgages to corporate financing, which is why yield swings can ripple into equity markets. As always, short-term volatility is a normal part of investing and generally should not drive changes to a long-term financial plan. Week Ahead: August 24–28, 2026This is one of the more consequential weeks of the summer, combining a major Iran sanctions announcement, newly effective Canadian tariffs, Nvidia earnings, and the Fed's Jackson Hole Symposium. Key Economic Data Monday, August 24: Treasury Secretary Scott Bessent is scheduled to announce new sanctions targeting Iran this afternoon, described by the administration as its most extensive economic pressure campaign against Tehran to date Tuesday, August 25: Consumer Confidence (August); New Home Sales (July); FHFA Home Price Index Wednesday, August 26: Durable goods orders (preliminary, July); Q2 GDP second estimate; Core PCE Price Index (July), the Fed's preferred inflation gauge; personal income and spending (July) Thursday, August 27: Weekly jobless claims; Jackson Hole Economic Symposium begins Friday, August 28: Fed Chair Kevin Warsh delivers his first Jackson Hole keynote address (10:00 AM ET); preliminary annual revision to nonfarm payrolls
What to Watch Wednesday's core PCE reading is likely to be closely watched given last week's yield surge; a hotter than expected print could add to pressure on long-term rates, while a cooler one could help stabilize them. Nvidia's earnings, also Wednesday, will be closely scrutinized as a bellwether for continued AI infrastructure demand following recent volatility in semiconductor names. Fed Chair Warsh's Friday keynote at Jackson Hole caps the week. Markets will be listening for any signal on the path of rates ahead of the Fed's September meeting, though Warsh has so far signaled a preference for limited forward guidance. Trade and Geopolitical Developments New U.S. tariffs on a range of Canadian goods, including items such as building materials, spirits, and certain apparel, took effect over the weekend after trade talks between Washington and Ottawa broke down. Canada has indicated it will respond with matching retaliatory tariffs beginning in September. This adds a new source of cross-border cost pressure worth monitoring, particularly for sectors with meaningful Canadian trade exposure. Separately, the administration is expected to detail sweeping new sanctions on Iran today as part of an intensified economic pressure campaign. Combined with ongoing disruption in the Strait of Hormuz, this keeps energy markets and geopolitical risk firmly in focus. U.S. equity futures were trading lower heading into Monday's session, reflecting some investor caution around these developments alongside last week's bond market volatility. As always, we encourage clients to stay focused on their individual goals and time horizons rather than reacting to any single week's headlines. Weekly Market Recap Link About Stacey Important Disclosures
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