Exchange-traded funds have taken in more than $400 billion, the most in nearly three years.
The agency authorized 11 funds to begin trading Thursday.
Investors are leaving defensive measures behind and focusing on buying and holding the benchmark gauge.
7RCC Global is proposing a fund that would invest in bitcoin and carbon-credit futures.
State Street's $478 billion SPDR S&P 500 ETF raked in its biggest inflow ever on Friday.
The MAX S&P 500 4X Leveraged ETNs promise to quadruple the daily returns of the benchmark index.
Exchange-traded-fund issuers have liquidated or delisted 234 products so far this year.
Envestnet serves some 100,000 advisers and has overseen a total $300 billion in model-portfolio trades.
Right now, only futures-based Bitcoin ETFs are available to investors.
The average municipal bond closed-end fund is available at a double-digit discounts to its net-asset value.