Corporate Performance: Revenue, profitability, and earnings reports directly impact investor confidence. Strong financial results usually lead to higher stock prices.

Overall Market Conditions: Broader economic trends, investor sentiment, and global events influence the overall stock market, impacting individual stocks like QS2A.BE.

Industry Trends: Developments within the specific industry QS2A.BE operates in, such as technological advancements or regulatory changes, affect investor perceptions.

Investor Sentiment: Positive news and opinions surrounding the company or its industry can drive up demand and thus the price, while negative sentiment can decrease it.

Interest Rate Changes: Increases in interest rates can make borrowing more expensive for companies, potentially impacting their profitability and stock price.

News and Announcements: Company-specific announcements like new product launches, partnerships, or acquisitions can significantly impact stock valuation.

Supply and Demand: The basic principles of supply and demand apply to stocks. Higher demand with limited supply increases prices; conversely, higher supply decreases prices.