Fridays have become a crucial day for traders to adjust their portfolios in anticipation of market-moving announcements typically made by President Donald Trump over the weekend. This shift has transformed the last trading day of the week into a key period for managing risk and positioning, especially in foreign exchange markets where option expiries on Fridays and Mondays are closely monitored. The increased market activity on Fridays is part of a broader surge in trading volume and volatility since Trump returned to the White House, disrupting economic outlooks with his policy decisions. Market participants now treat Fridays with heightened caution, reflecting the impact of Trump's weekend communications on market dynamics.