Scaled up my retail trading position significantly this past week – multiplied my entry by 4x. Here's the thing: for retail traders betting on market movements, the leading platforms dominate the space right now. They've consolidated stocks, crypto, and prediction markets all in one place, which means most retail players have no choice but to operate there. Since you can't access prediction markets like Polymarket or Kalshi directly through standard brokers, major trading platforms become the natural gateway. Their ecosystem essentially captures the entire retail trading flow – from traditional equities to digital assets to event betting. That consolidation makes them the default choice for anyone looking to diversify their positions across multiple asset classes.