New York Stock Exchange will temporarily run one exchange from Chicago to show its readiness to move The New York Stock Exchange is signaling that it will move its electronic trading systems out of New Jersey if the state implements a proposed tax on financial transactions. The NYSE plans to announce that it will run one of its exchanges from a backup site in Chicago for a week as a demonstration of its readiness to quit the state, according to an internal memo seen by The Wall Street Journal. Like many other exchange operators, the NYSE runs its electronic trading...