Companies can protect their finances from extreme weather by relying on historical-risk and revenue-stream data, according to Allianz. Weather variations affect about 70% of companies and cause up to $534 billion in U.S. economic losses annually, the financial-services firm said. "In the past, public companies excused themselves for not meeting revenue goals due to weather events," said Karsten Berlage of Allianz Risk Transfer. "... Now even construction companies usually pay a penalty for every day they are delayed on finishing a project due to low temperatures. ... If they are insured against these losses, the cost is carried on to insurers."