Source: Cointelegraph.com NewsBlackRock, Franklin Templeton, and VanEck have reportedly received preliminary approval from the US securities regulator, sources say.Read MoreFranklin Templeton, VanEck, Fidelity, ARK 21Shares, Grayscale, Bitwise, Invesco Galaxy, Eric Balchunas, Nate Geraci, Matt Hougan, Katherine Dowling