Matthew Sigel, head of digital asset research at VanEck, said that he expects the spot Bitcoin ETF to be "very strong in the second half of the year." VanEck can compete with larger competitors because large investment advisers will gradually change their attitudes and allow clients to access Bitcoin. Sigel believes that one of the reasons why other Wall Street companies are adopting a slow approach is that they are trying to incorporate Bitcoin into their asset allocation models, which takes time.