???? ???????? ??????? ????? ??????? ?? ??? ????? ???? ????? ?? ???? ?? ???? ?? ????? ?? ???? ???.??????? ?? ?? ????? ???? ????? ?? ??????? ???? ???????? ?? ???? ??? ??? ???? ?????? ???????: the securities held by an investor : the professional paper held by a economic establishment (for a bank)???? ??? ???? ???????? ?? ?????? ?? ???? ??? ??? ?????