
Explainer-Why markets are in uproar over a risky bank bond known as AT1
LONDON (Reuters) – Financial markets have been thrown a fresh curve ball by the decision to write down 16 billion Swiss francs ($17.5 billion) of Credit Suisse bonds, known as Additional Tier 1 or AT1 debt, to zero as part of a forced rescue merger with UBS. Under the deal, holders of Credit Suisse AT1…