Cathie Wood's Ark Invest boosts its JD.com stake after earnings beat, signaling it's bullish on Chinese tech stocks again The star stock-picker's fund bought about 165,000 American Depositary Receipts in the e-commerce group on Monday. – Cathie Wood boosted its stake in JD.com after Q2 earnings beat analyst estimates. – Ark Invest disclosed that it bought 164,889 shares in JD.com on Monday. – Wood's investment firm recently offloaded Chinese tech stocks as regulatory risks mounted. – [Sign up here for our daily newsletter, 10 Things Before the Opening Bell] . Cathie Wood's Ark Invest added to its [JD.com]( ) position…