Jay's Data Stream • 5 implied HN points • 19 Feb 26
- Buy-and-hold only reliably works for broad index funds, because they spread risk across many companies; individual stocks or crypto can go to zero, so you can’t treat every asset the same.
- True diversification means different exposures, not just different labels — owning the S&P plus a bunch of U.S. tech bets is still concentrated; an automated, multi-asset portfolio with regular rebalancing helps you survive big drawdowns.
- Use clear rules and position sizing: keep a small YOLO bucket, only hold individual bets you would buy at today’s price, and pay attention to fees and fine print because small differences compound over time.