Robinhood Markets, Inc.

Nicki argues Robinhood executed a classic platform playbook against Kalshi: partnering to validate prediction markets demand, then building competing infrastructure through Rothera Exchange once the market proved real. Kalshi cleared $22.9B in 2025 and $24B+ quarterly by Q1 2026, reducing Robinhood's share from 60% to roughly 25% of volume. The lesson: infrastructure builders must develop defensible moats like liquidity depth and institutional credibility before distribution partners capture the economics, or face the dependency becoming leverage.