Yes, duty of confidentiality. In the limited partnership private equity fund, LP should bear the confidentiality obligation to the business secrets of the target company obtained by exercising the right to know. In practice, GP often restricts LP's right to know on this ground, or demands LP.
Sign a strict confidentiality agreement.
Contractual private equity funds also require fund share holders to keep business secrets and not to disclose the investment plans or intentions of private equity funds.