Schwab Trading Activity Index Slumps as Geopolitical Tensions Spike

The Charles Schwab Trading Activity Index (STAX) experienced a significant decline in March, falling to 56.04 from the previous month’s level of 57.32. This contraction marks the most substantial monthly decrease recorded by the index since May 2025. Market observers attribute the cooling in investor participation to the heightened geopolitical instability stemming from the conflict involving Iran. The STAX reading, which tracks the sentiment and behavior of retail investors across the Charles Schwab platform, suggests a shift toward caution as external risks intensified throughout the month.