Speculator

n.	1.	One who speculates. Specifically: (a) An observer; a contemplator; hence, a spy; a watcher.
	2.	One who forms theories; a theorist. A speculator who had dared to affirm that the human soul is by nature mortal. - Macaulay.
	3.	(Com.) One who engages in speculation; one who buys and sells goods, land, etc., with the expectation of deriving profit from fluctuations in price.

Noun	1.	speculator - someone who makes conjectures without knowing the facts
	2.	speculator - someone who risks losses for the possibility of considerable gains Synonyms: plunger

adventurer, armchair authority, betting ring, bettor, big operator, boneshaker, cardshark, cardsharp, cardsharper, casuist, compulsive gambler, cosmologist, crap shooter, doctrinaire, doctrinarian, gambler, gamester, gunslinger, hazarder, hypothesist, hypothesizer, lame duck, margin purchaser, metaphysician, operator, petty gambler, philosophaster, philosophe, philosopher, philosophizer, piker, player, plunger, punter, scalper, sharp, sharper, sharpie, smart operator, sophist, sport, sporting man, sportsman, stag, theoretic, theoretician, theorist, theorizer, thinker, tinhorn, tipster, tout, venturer, wagerer