Gordon Scott has been an active investor and technical analyst for 20+ years. He is a Chartered Market Technician (CMT). Theta, the Greek letter θ, is an options risk factor that measures the speed of ...
For example, in 1928 Alexander Fleming found that mold accidentally growing on a Petri dish stopped bacteria from spreading. When purified, that mold makes the medicine penicillin, which we use today ...
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