Investors generally have the flexibility to sell their Blackrock Fund shares at any time, subject to the specific terms and conditions of the individual fund. Blackrock Funds typically offer daily liquidity, allowing investors to sell their shares on any business day. However, it is important for investors to be aware of any potential implications, such as sales charges or redemption fees that might apply, depending on the fund type and share class. Additionally, understanding the fund's performance or market conditions at the time of selling can also be crucial. For precise details about selling shares, investors may want to refer to the fund's prospectus or the official Blackrock website, where they can find the most current information about their specific funds and any associated terms.