An announcement under Rule 8 containing details of interests or short positions in, or rights to subscribe for, any relevant securities of a party to the offer held at the start of the offer period. An Opening Position Disclosure is required to be made after the commencement of the offer period and, if later, after the announcement that first identifies an offeror and must be made by the offeree, by an offeror (after its identity is first publicly disclosed) and by any person that is interested in 1% or more of any class of relevant securities of any party to the offer. Opening Position Disclosures must be made by 12 noon on the day falling 10 business days after the commencement of the offer period or the announcement which first identifies the offeror.