Advisors say single-stock ETFs are more appropriate for short-term institutional traders who understand the inherent risks, not for retail clients.

The founder of Trian Fund Management also discusses activist investing and the economy.

“Corporates, municipals, high yield, and emerging markets present more opportunity than any time in the recent past.”

Even if stocks and bonds are now positively correlated, there are still plenty of days when the two asset classes don’t move together.

"Complex" ETFs are a fast-growing corner of the $6.4 trillion industry.

Conflicting forces are at play.

The RiverNorth Enhanced Pre-Merger SPAC ETF (SPCZ) launched last week, investing in so-called special purpose acquisition companies before they merge with their targets.

ETF fund issuers saw filings drop in half after Russia's invasion of Ukraine roiled markets, essentially finishing the first half flat.