Scott Shellady, known in the trading pits of Chicago for his trademark “cow jacket,” isn’t going to let a historic blast of Arctic freeze on Wednesday keep him away from the options pits at the world’s largest derivatives exchange, even though many of the city’s workers are planning to hunker down at home.

“I come from a family of farmers,” said Shellady, who commutes into the city from northwest Indiana. “And there’s a word in English that describes the weather we’re having. Winter.”

Read the full article from Bloomberg here.