The Long Cramer Tracker ETF has gained about 2.2% since its inception five months ago.
Grantham is one of Wall Street's most well-known bears, famed for his gloomy forecasts.
Some of the biggest ETF companies are relying on the success of one key fund.
More than $1.8 billion came out of the $39 billion iShares 20+ Year Treasury Bond ETF last week.
PGIM Fixed Income is among fund managers looking to capture windfall profits with 20-year bonds.
U.S. regulators have yet to approve a spot-Bitcoin ETF.
Naysayers are skeptical that a U.S. spot bitcoin fund would be a true game changer.
The David Booth-founded firm wants to create ETFs as a share class of its mutual funds.
The Schwab High Yield Bond ETF charges just 10 basis points annually.
Cash has emerged as one of the most popular asset classes amid the Fed's historically aggressive tightening cycle.