Some people just hate surprises. Defined outcome ETFs, which minimize downside risk but place caps on potential gains, are on track to surpass $334 billion in assets by 2030 from just$69 billion today, according to Cerulli’s latest report. The rapid growth is attributable in part to an aging US population, as baby boomers near or reach retirement and try to limit risk in their portfolios. The shift could have profound implications for the future of retirement planning and the evolving ETF landscape. “Pe ...