Oilstocksareprettymuchanything, literallyanythingandthat's whyit's called a derivative.
Ifwebetonthepriceoftheoilforexampleandcreate a derivativeastheoilpricechangesduetogeopoliticalfactors, thepriceofthatderivativechangesaccordingly.
Let's sayyourfriendwantstosellhisPokemoncardssixmonthsfromnowandyoudesperatelywantthatcut, youtellyourfriends I willbuyyourcardfor $100.
Ifyoupromisemethatyouwillsellitonlytome.
Youcreate a contract, signitandcongratulateyouhavecreated a derivative, butit's notassimpleasthatbecauseguysinfancysuitsinWallStreethavecomplicatedthematter.