US stocks closed modestly higher on Thursday, with the S&P 500 and Nasdaq both posting gains, as a key driver came from an unexpected corner: the bond market. Long-term Treasury yields, which had been climbing for weeks, finally took a breather after the US Treasury announced it would double its liquidity-support buybacks for longer-dated bonds. That move helped calm nerves in fixed-income markets and gave equities room to breathe.
The standout performer was Moderna, whose shares soared more than 137% after the company released late-stage trial data for a cancer vaccine. The results, which showed significant promise in treating melanoma, sent the stock to its biggest one-day gain on record and pushed the entire healthcare sector to an all-time high. The rally was so sharp that it triggered a massive short squeeze, with short sellers scrambling to cover their positions.
What drove the bond market calm?
The 30-year Treasury yield had touched its highest level since 2007 earlier this week, a move that had spooked investors and raised concerns about the cost of borrowing for the government and corporations. But on Thursday, the Treasury said it would double the size of its buyback program for longer-dated bonds. This is not a stimulus measure; rather, it is a liquidity tool designed to make these bonds easier to trade. By stepping in as a buyer, the Treasury helps smooth out market functioning, which in turn can reduce volatility and put downward pressure on yields.
The announcement was well received by investors, who had been worried about the recent surge in yields. Lower yields are generally positive for stocks, especially for growth companies that rely on future cash flows, because they reduce the discount rate applied to those earnings. The easing in yields also helped lift other risk assets, including Latin American markets, which rebounded as the dollar slipped.
Fed minutes take a back seat
Investors largely shrugged off the release of the Federal Reserve's July meeting minutes, which showed that several officials were open to another interest rate hike, and many would consider one if inflation remains sticky. The minutes were seen as slightly hawkish, but the bond market's reaction to the Treasury's buyback news overshadowed any concerns about future rate moves.
For everyday investors, the Fed's stance remains a key watchpoint. If inflation stays elevated, the central bank could raise rates again, which would likely push yields higher and put pressure on stocks. But for now, the market seems to be betting that the Fed is done with hikes, or at least that any further increases will be modest.
What it means for your portfolio
The day's action highlights two important themes for investors. First, the bond market is having an outsized influence on stock prices. When yields rise sharply, as they did earlier this week, equities tend to struggle. When they ease, stocks often rally. Keeping an eye on the 10-year and 30-year Treasury yields can give you a sense of the market's risk appetite.
Second, single-stock events can still move entire sectors. Moderna's surge was a reminder that biotech and pharmaceutical companies can see massive swings based on clinical trial results. For investors holding healthcare funds or ETFs, such news can provide a boost, but it also underscores the volatility inherent in the sector.
It's also worth noting that the Treasury's buyback program is not a one-off. The department said it would continue to use buybacks to support liquidity in the long end of the curve. This could help keep a lid on yields over the coming months, which would be a supportive backdrop for stocks.
As always, it's important to remember that market moves like Thursday's are part of the normal ebb and flow. Rather than reacting to every headline, focus on your long-term investment goals and maintain a diversified portfolio that can weather short-term fluctuations.
