Company Performance: Positive earnings reports or successful clinical trial results often boost investor confidence, driving up the stock price, while losses or trial failures can lead to price declines.

Market Sentiment: Overall investor optimism or pessimism regarding the biotechnology sector or the broader European stock market can significantly impact ABEO.PA's price, irrespective of company-specific news.

Regulatory Approvals: Positive decisions from regulatory bodies like the EMA regarding ABEO's drug candidates can significantly increase the stock price. Conversely, regulatory setbacks can depress the price.

Competition: The emergence of competing therapies or companies in ABEO's therapeutic areas can negatively impact the stock price as investors consider potential market share erosion.

Macroeconomic Factors: Broad economic conditions, such as interest rates, inflation, and currency exchange rates, can indirectly affect investor sentiment and ABEO.PA's valuation.

Financial News: Major financial events like earnings announcements, partnerships, or debt offerings influence investor perceptions and subsequent buying or selling pressure on the stock.

Analyst Ratings: Recommendations and price targets from financial analysts can sway investor opinion and affect demand for ABEO.PA shares, either positively or negatively.

Major Shareholder Actions: Significant sales or purchases of ABEO.PA stock by institutional investors or company insiders can create market volatility and influence the stock price.