prefer that an institution's holdings are illiquid

The question is from corporate finance. Why does an investor prefers that an institution’s holding is illiquid if he holds the same stock? I couldn’t find which LOS covers it.

because they can’t just bail if sht gets heavy, they are more likely to take an activist role and try to help the firm maximize shareholder wealth.

investor different from institution here. You (investor) prefer to buy some illiquid stocks if Goldman are holding them