Company Performance: Canadian National Railway's (CN) financial health, including revenue, earnings, and operating ratio, significantly impacts its stock price.

Economic Conditions: Overall economic growth, particularly in Canada and the US, influences freight demand and CN's profitability, affecting investor sentiment.

Commodity Prices: Fluctuations in prices of key commodities transported by CN, such as grain, lumber, and energy products, impact revenue and the stock's value.

Interest Rates: Changes in interest rates can affect borrowing costs for CN and influence investment decisions, impacting stock valuation.

Government Regulations: New regulations related to transportation, safety, or environmental issues can affect CN's operating costs and stock price.

Competition: Performance of competitors like Canadian Pacific Kansas City (CP) can influence CN's market share and investor perceptions.

Global Trade: International trade flows and agreements, especially those impacting North American trade routes, play a vital role.

Fuel Prices: As fuel is a major operating expense, changes in fuel prices affect CN's profitability and investor sentiment.

Weather Conditions: Extreme weather events can disrupt rail operations, negatively impacting revenue and the stock price.

Investor Sentiment: Overall market mood and investor confidence in the rail industry influence demand for CN stock.