Terra Industries (TRA) is off 10 cents to $46.85 and an investor pays 30 cents for the Mar 45 – 46 put spread, 15000X. It might roll a position up in strikes, but seems like a defensive play. CF Industries (CF) has started its exchange offer for TRA common stock at $37.15 in cash plus .0953 of a share of CF. CNBC’s Faber said yesterday that Yara’s Board of Directors is meeting today to see if they want to revise, perhaps top, CF’s bid. They have 5 days to do so. The put spread is likely a short-term hedge should, for whatever reason, the buyout fall apart. March options come off the board at the end of next week.