Brexit negotiations have spurred wider swings in sterling.

Falling euro yields and the ECB's deep pockets offer U.S. issuers an escape hatch.

Falling euro yields and the ECB's deep pockets offer U.S. issuers an escape hatch.

S&P, Moody's and Fitch weren't hit as hard by new rules after the financial crisis as banks were.

S&P, Moody's and Fitch weren't hit as hard by new rules after the financial crisis as banks were.

About 64% doubt the exit will be orderly, a Barclays poll shows.

About 64% doubt the exit will be orderly, a Barclays poll shows.

Demand for fixed income should anchor companies' borrowing costs.