David Zelinski is the Trading Principal of Opus Futures, LLC and is responsible for all trading decisions. Beginning in February 2005, Mr. Zelinski has worked with Nesvick Trading Group as its primary research analyst. While employed with Nesvick Trading Group, Mr. Zelinski has written daily research reports for clients discussing a wide range of issues. These have covered agricultural fundamentals such as crop production, cash grain markets, and weather deve... (login for more professional bio)