Which financial product launch in the 2010s is credited with forcing traditional brokerages to eliminate trading commissions and democratizing stock market participation?

Product launches in the financial industry have sometimes transformed how markets operate and how investors participate in them. This trivia tests your knowledge about a pivotal product launch that democratized stock trading and disrupted traditional brokerage models. Can you identify which product introduction fundamentally altered the retail investment landscape and challenged long-standing commission structures?

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Robinhood's commission-free trading platform (2015)
E*TRADE's Power E*TRADE platform (2019)
TD Ameritrade's thinkorswim mobile app (2013)
Charles Schwab's Intelligent Portfolios robo-advisor (2015)