Day Trading on Instagram: "Grey vests and Patagonia zip-ups didn’t take over Wall Street because people stopped caring about style they took over because finance itself changed. As trading floors grew quieter and computers replaced shouting brokers, the culture shifted from signaling power to signaling competence. The vest became a kind of uniform for people working with data, models, and long-term strategies: practical, comfortable, and intentionally unflashy. Follow @daytrading for daily updat