chartist
noun[C]
uk/ˈtʃɑːtɪst/usFINANCE
apersonwho useschartsandcomputerprogramstolookat how thepricesofshareshave gone up and down in the past, inorderto say how they mightchangein thefuture:
The BTpricechartshowshow a chartist could havespottedthe end of a two-yearrisein BTshares.