The Paris stock market, represented by the CAC 40 index, has experienced significant fluctuations in recent days. On December 16, the index was anticipated to open lower due to concerns surrounding upcoming PMI data and the impact of Moody's assessment. By the end of the day, Wall Street had mixed results, with the Nasdaq reaching a record high, while the CAC 40 closed down. The following day, December 17, the CAC 40 continued to struggle, initially remaining stagnant before showing slight gains, largely influenced by positive performances from companies like Airbus and Safran. The index's movement was further affected by investor sentiment ahead of key economic data releases from Germany and the United States. Sanofi also saw gains due to favorable results from a treatment for Crohn's disease, which contributed to the CAC 40's slight recovery. Overall, the CAC 40's performance reflects a cautious market atmosphere as investors await further economic indicators.