Money · Facts & sources
4 sourced facts about investing and the stock market, each with the context behind the number. 4 more are in today's round and appear here after it closes.
Answermore than 27 million accounts
Robinhood helped popularize commission-free trading and drew in a wave of younger, first-time investors.
Source: Wikipedia, Robinhood Markets (2025) en.wikipedia.org
Answerabout $9.9 trillion
Of that, about $5.7 trillion is held specifically in mutual funds within 401(k) accounts.
Source: Wikipedia, 401(k) en.wikipedia.org
Answerabout 38%
That concentration has generally grown over recent decades as stock ownership skews toward wealthier households.
Source: Wikipedia, wealth inequality in the United States (2013) en.wikipedia.org
Answerabout 8%
This stark gap illustrates why stock market gains disproportionately benefit already-wealthy households.
Source: Wikipedia, wealth inequality in the United States (2013) en.wikipedia.org