The following excerpt is from Grandon v. Merrill Lynch & Co., Inc., 147 F.3d 184 (2nd Cir. 1998):
In the case of an omission, the duty to disclose generally "arises when one party has information that the other [party] is entitled to know because of a fiduciary or other similar relation of trust and confidence between them." Chiarella v. United States, 445 U.S. 222, 228, 100 S.Ct. 1108, 63 L.Ed.2d 348 (1980) (internal quotation and citation omitted).
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