Infosys (INFY.US) stock price is influenced by several factors: Global Economy: Overall economic health impacts IT spending and demand for Infosys' services.

Company Performance: Revenue growth, profitability, and contract wins directly affect investor confidence.

Industry Trends: Technological advancements, competition, and outsourcing trends play a crucial role.

Rupee-Dollar Exchange Rate: Fluctuations impact Infosys' dollar-denominated earnings when converted to rupees.

US Market Conditions: Since Infosys is listed on the NYSE, US market sentiment influences its trading.

Investor Sentiment: General market optimism or pessimism can affect buying and selling pressure.

Regulatory Changes: Policies related to immigration, taxation, and trade can impact operations.

Dividend Payouts: Dividend policy and yields affect investor attractiveness and stock valuation.

Leadership Changes: Key management changes can introduce uncertainty and affect stock prices.

Mergers and Acquisitions: Strategic acquisitions or mergers can boost or dilute shareholder value.