The rules used to determine how a particular corporate action affects derivative contracts relating to such company shares are detailed in Euronext Corporate Actions Policy.
Where contracts have been affected by recent corporate actions resulting in currently tradable contracts being non-standard for particular delivery months and/or strikes, this information can by found under Unusual Contract Sizes.
Version 6, effective as of 11 February 2019
Version 5, relevant for those takeovers where implied volatilities are calculated and published prior to 11 February 2019
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