Core Viewpoint - The stock market is experiencing a pattern of rising on Mondays following declines at the end of the previous week, indicating a potential trend in investor behavior [2]. Group 1: Market Performance - The S&P 500 index increased by 1% on Monday after a decline of 0.6% on the preceding Friday [3]. - If the gains are maintained, this would mark the eighth consecutive Monday in 2026 that the market closed higher [3]. - The only decline for the index on a Monday occurred on February 23, when President Donald Trump announced a global tariff increase to 15% [3].