Security şi atât. Şi în română titlu de plasament este un termen generic.

"Titlurile de plasament reprezinta actiunile proprii rascumparate, actiunile achizitionate, obligatiunile emise si rascumparate, obligatiunile achizitionate si alte titluri de plasament achizitionate in vederea realizarii unui profit intr-un termen scurt."
http://www.rubinian.com/dictionar_detalii.php?id=3083


"Securities (tradable claims on a corporation or the state) is a generic term for both debt claims, such as bonds or promissory notes and certificates representing ownership, such as common stock or ordinary shares, as well as being used for derivatives although, in this case, the term instrument is to be preferred. "
GrandDic