Which of the following is NOT a factor that influences stock prices?

Weather conditions are generally not considered a direct factor that influences stock prices in the same way that company performance, economic indicators, and investor sentiment do.

Company performance is closely tied to stock prices, as measures like earnings reports and revenue growth directly impact investor perception and valuation of the stock. Economic indicators such as GDP growth, unemployment rates, and inflation also play a significant role; they provide context to the overall economic environment and can lead to adjustments in stock valuations based on anticipated future performance. Investor sentiment, which encompasses the mood of the market and how investors feel about future growth or risks, can lead to price fluctuations even independently of fundamental factors.

In contrast, while weather conditions can certainly impact specific industries (like agriculture, transportation, and retail), they do not have a uniform or lasting impact on stock prices as a whole. Thus, it is the least relevant factor in the context of stock price determination.