Research cited by multiple outlets reports a widening wealth gap between people who invest and those who keep savings in cash. The findings are attributed to wealth management firm St. James’s Place. According to the reporting, investors can build wealth that is up to four times higher than the wealth held by cash savers, including cases where investors’ incomes are modest. The coverage frames the difference as a comparison of outcomes rather than a direct claim about specific products or strategies. The articles point to the general effect that investing over time can produce stronger growth than holding money primarily in cash. While details such as the methodology, the precise time period, and the demographic breakdown are not included in the excerpts provided, the consistent theme across sources is that investment behavior is associated with substantially higher accumulated wealth than cash saving alone.