Wall Street rises, boosted by falling bond yields and Moderna's cancer therapy news

US stock markets experienced a modest rise on Wednesday, with falling government bond yields improving investor risk appetite. The healthcare sector, in particular, saw substantial gains, largely driven by a significant surge in Moderna's stock price. Moderna's shares climbed dramatically after the company announced that its personalized mRNA cancer treatment, developed with Merck, showed a reduced risk of melanoma recurrence and spread in an advanced trial. Merck's stock also rose, making it a top performer in the Dow Jones Industrial Average. This positive news for the healthcare sector propelled the S&P 500's healthcare index to a new record high. Investors showed a muted reaction to the Federal Reserve's July meeting minutes. The minutes revealed growing concerns about inflation, with many officials suggesting that further interest rate hikes might be necessary if inflation does not return to the central bank's 2% target. This cautious outlook tempered some of the market's initial enthusiasm. Despite the overall gains, market indices pared back some of their earlier advances by the end of the trading session. Analysts suggest that investors may have engaged in profit-taking after the initial rally. While the Treasury Department's announcement to double liquidity support purchases for longer-term bonds provided some relief, the underlying issue of potentially higher interest rates remains a concern for the market, especially impacting technology and AI-related trades.

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risk appetite is trying to hold onto the life raft thrown by Treasury Secretary Bessent.