Company Performance: CBA's profitability, revenue growth, and efficiency directly impact its stock price.

Economic Conditions: Interest rates, inflation, and overall economic growth in Australia influence bank stocks.

Regulatory Changes: Government regulations affecting the banking sector, capital requirements, and lending practices affect CBA.

Market Sentiment: Investor confidence and overall market trends impact demand for CBA shares.

Competition: Performance of other major Australian banks (e.g., ANZ, NAB, WBC) affects CBA's relative attractiveness.

Dividend Policy: CBA's dividend yield and payout ratio influence investor interest and stock valuation.

Global Events: International economic events and financial crises can impact Australian banks.

Commodity Prices: Australia's resource-based economy means commodity price fluctuations can affect CBA.

Risk Appetite: Investors' willingness to take risks influences demand for CBA shares.

Housing Market: The strength of the Australian housing market, as CBA is a large mortgage lender, affects its stock price.