Tesla billionaire doubles Nvidia stake; says convinced AI not a bubble, hopes contribution ‘calms nervous market’ by Live mint | March 9, 2026 7:08 pm | Indian Stocks, Market, News Billionaire Leo KoGuan is convinced that AI is not a bubble and has doubled his Nvidia stake to 2 million shares with hopes to calm the nervous market amid a global sell-off sparked by geopolitical uncertainties in West Asia.