Capital markets are experiencing a structural shift that challenges decades of institutional dominance. Retail investor coordination, enabled by digital infrastructure and social platforms, is creating persistent friction in equity pricing, corporate governance, and capital allocation decisions. This is not a temporary anomaly but a recalibration of market microstructure. The book examines three mechanisms driving this realignment: concentrated retail momentum in low-float equities, the weaponization of options gamma exposure, and the erosion of informational asymmetry between institutional and individual actors. Each mechanism operates independently but compounds when activated simultaneously, creating volatility patterns that traditional risk models fail to capture. For corporate finance teams and institutional allocators, the implications are operational. Short-term capital costs become less predictable. Shareholder activism now originates from decentralized networks rather than concentrated funds. Equity as a governance instrument behaves differently when ownership is distributed across millions of coordinated but legally independent actors. The strategic question is not whether this shift persists, but how corporate decision-making adapts to markets where retail coordination is a permanent structural variable.