The costs of wildfires, storms, droughts and floods impact everything from insurance and mortgage markets to pension funds and other financial institutions. Those observations are not entirely new, but they carry new weight coming with the imprimatur of the regulator of complex financial instruments like futures, swaps and other derivatives that help fix the price of commodities like corn, oil and wheat. It is the first wide-ranging federal government study focused on the specific impacts of climate change on Wall Street.