10 mins to buy, page-7

ex entitlement - BMY is now this

XE first displays for a security from the morning of the Ex Entitlement date (generally four business days before the record date) and remains until the close of business on application's close date. Trading in securities displaying XE on ITS does not carry the right to securities in the entitlement issue. For more information refer to the description of Cum Entitlement. All orders are purged at the end of the trading day prior to the security being quoted on an XE basis.
XF ex takeover offer