The assessment is based on strong, consistent evidence from multiple high-authority sources that support both components of the statement.First, concerning the claim that "Microsoft's share price dropped by more than 11%," the Wall Street Journal (Authority: 0.94) provides direct and specific evidence, stating that Microsoft's shares fell by 11.76%. This figure is explicitly more than 11%. This significant drop is corroborated by several other sources, including Investor's Business Daily, which reports the stock 'plunged', and Schaeffersresearch, which notes it was the stock's worst single-day loss since March 2020. Second, regarding the claim that "US stock indexes also declined during the same period," this is also well-supported. Investor's Business Daily (Authority: 0.90) directly states that the "Nasdaq index led a 'sell-off'". Similarly, Investopedia (Authority: 0.90) reports that "Stocks Dive" and attributes the decline to Microsoft's performance. These sources confirm a broader market downturn concurrent with Microsoft's stock drop.There are no significant contradictions among the relevant, high-authority sources. While a Charles Schwab article mentions a market rally, its relevance score is 0.00, indicating it is not discussing the same event. The evidence overwhelmingly and consistently supports both parts of the statement, leading to a high confidence level in its truthfulness.