Does religion shape individual portfolio choices and long-term wealth accumulation? To answer these questions, we examine whether the same individual adjusts their equity portfolio on specific religious days, allowing us to isolate religion-driven investments. Using trading sessions held in India during a major festival promoting long-term prosperity which act as a cue, we find that individuals who associate with beliefs about the festival invest substantially more on the event day. They buy new stocks, hold them longer, and experience persistent increases in equity account size and diversification post-event. Event-driven purchases represent a larger financial commitment for lower-income individuals and smaller accounts, who subsequently benefit from increased equity exposure and greater wealth accumulation. Our findings uncover how religious cues can shape individual long-term investments and wealth accumulation.