The "Fast Money" traders shared their first moves for the market open.

Tim Seymour was a buyer of Apple

Karen Finerman was a buyer of CBS

Dan Nathan was a seller of Caterpillar

Guy Adami was a buyer of Pfizer

Trader disclosure: On July 31, 2018 the following stocks and commodities mentioned or intended to be mentioned on CNBC's "Fast Money" were owned by the "Fast Money" traders: Tim Seymour is long AMZA, ACB.TO, APC, APH.TO, BABA, BAC, BIDU, BX, C, CCJ, CLF, CMG, CRON, CSCO, CX, DAL, DPZ, DVYE, EA, EEM, ERJ, EUFN, EWM, FB, FXI, GE, GILD, GM, GOOGL, GWPH, HAL, INTC, JD, LEAF, MAT, MCD, MO, MOS, MPEL, NKE, PAK, PHM, PYPL, RH, RL, SBUX, SQ, T, TIF, TWTR, UA, UAL, VALE, VIAB, VOD, X, XLE, XRT, YNDX, 700.HK. Tim is short IWM, RACE, SPY. Karen Finerman's firm is long ANTM, C, CBS, FB, FL, FNAC, GOOG, GOOGL, GLNG, GMLP, JPM, KORS puts, LYV, SPY puts, SPY put spreads, URL, WIFI. Her firm is short IWM. Karen Finerman is long AAL, BAC, BOT Bitcoin, Bitcoin Cash, Ethereum, C, CAT, CBS, DAL, DVYE, DXJ, EEM, EPI, EWW, EWZ, DVYE, FB, FL, GM, GMLP, GLNG, GOOG, GOOGL, JPM, LOW, LYV, KFL, KORS, KORS calls, MA, MTW, SEDG, SPY puts, TACO, WIFI, WFM. Karen Finerman is short KRE, TBT calls. Bitcoin and Ethereum are in her kids' Trust. Karen and Karen's firm are long CBS. Dan Nathan is short SMH. Dan is long XLF Sept put spread. Dan is Long T Oct call spread. Dan is long IWM aug put spread. Don is long CAT put spread. Guy Adami is long CELG, EXAS, GDX, INTC. Guy Adami's wife, Linda Snow, works at Merck.