Gold prices jumped as much as 20 per cent in January before falling this month, while silver, after rising 250 per cent over 13 months, dropped 20 per cent in just days, raising the question of whether the boom is over or volatility will continue. Last night on ABC Nightlife with Philip Clark, I discussed these moves alongside why markets are no longer responding logically to geopolitical headlines, as massive passive index flows and belief in US exceptionalism keep equities elevated. I also explained how index investing has driven extreme concentration in mega-cap tech stocks and why that dominance is now starting to unwind as investors reassess who will truly benefit from artificial intelligence (AI).