Thorp warns investors to treat market forecasts as estimates, not certainties

Financial markets are built on estimates, not certainty, says veteran quant Edward Thorp. He notes that probability distributions used by traders are only approximations, making the financial world inherently uncertain. Thorp adds that models often fail when surprise events occur, so relying on exact forecasts is risky. He urges investors to focus on strong risk‑management practices, spread holdings across different assets, and build portfolios that can survive shocks. Overconfidence in any single forecast, he says, can lead to costly mistakes. The comment was recorded on 16 Sep 2026 at 01:30 AM IST and reflects broader advice echoed by market analysts on ETMarkets about staying cautious amid volatile Sensex and Nifty movements.