Nvidia Corp. has surpassed Tesla Inc. in single-stock ETFs, with over $6 billion in assets, representing more than half of all assets in the sector. Nvidia-focused ETFs have taken in $4.4 billion this year, six times more than last year, driven by the artificial-intelligence boom. Tesla-centric funds, on the other hand, have seen a decline, with only $1 billion in inflows this year.