BrokersView has reviewed that Bull Sphere is an unregulated forex broker Bull Sphere claims to be authorized and supervised by the US National Futures Association (NFA) with registration number 0548533. We indeed found a matching result in NFA's registry, however, Bull Sphere is not overseen by NFA as it is not an approved member of the regulator. As a forex trader, you must bear in mind that if a broker claims to be eligible to solicit US customers in forex activities, it must: 1) be accredited as an approved Forex Dealer Member of NFA; 2) be admitted as a "retail forex exchange dealer." Obviously, Bull Sphere doesn't satisfy these conditions. That means, this broker is merely a registered firm rather than a regulated one and is not qualified to carry out such services. Therefore, it is a scam.