Still Sitting in Cash? Here's How Much $10,000 Could Cost You Over the Next 10 Years.

The article argues that while cash and Treasury bills offer safe 3-4% returns suitable for near-term needs, long-term investors with 10+ year horizons would benefit more from stocks, which historically return ~10% annually. Over 10 years, $10,000 in Treasury bills would grow to ~$14,800 versus ~$25,937 in S&P 500 investments, representing an $11,000 opportunity cost of staying in cash.