Complex sentence: Michael Marcus is a commodities trader, profiled in the book "Market Wizards" by Jack D. Schwager is considered one of the top 100 traders of the 20th century.
Split into simpler sentences: Michael Marcus is a commodities trader, he is profiled in the book "Market Wizards" by Jack D. Schwager. He is considered one of the top 100 traders of the 20th century.