ETFs with hefty stakes in Netflix (NFLX) plowed ahead on the stock market today, buoyed by its better-than-expected Q2 results late Wednesday. First Trust Dow Jones Internet (FDN), a $3.11 billion ETF with 4.5% of assets allocated to the Internet TV service, advanced 1.9%. ARK Web x.0 (ARKW) edged up 1.4% on higher-than-average volume, First Trust ISE Cloud Computing (SKYY) 1.1% and PowerShares Nasdaq Internet (PNQI) 2.2%.