Under the SEC's Reg FD, public companies are required to disclose all material information to all investors at the same time. So, what you propose is not really

Under the SEC's Reg FD, public companies are required to disclose all material information to all investors at the same time. So, what you propose is not really workable under the current regulatory regime. Sometimes public companies will give extra disclosure to help investors (e.g., product line revenue, numbers of employees within each function, etc.), but often that information is not enough to truly diligence an investment thesis. As a result, there is a slight information asymmetry penalty in the valuation; however, this penalty is dwarfed by the liquidity premium you get as a public company.