A spot bitcoin ETF would track bitcoin's underlying market price. Proponents say an ETF would give investors exposure to bitcoin without directly buying it.
The SEC rejected Grayscale Investment LLC's application last year to convert its flagship spot Grayscale Bitcoin Trust into an ETF.
Grayscale sued the SEC, claiming that the regulator was acting arbitrarily in rejecting applications for spot bitcoin ETFs when it had previously approved bitcoin futures ETFs.