Lehman Brothers Finance SA (In Liquidation) v Sal Oppenheim JR & CIE KGAA  EWHC 26277
The claimant (Lehman) claimed for the balance of the sum which it argued was properly due from the defendant arising out of early termination of four option transactions governed by an English law ISDA Master Agreement (1992 version) (the Agreement), together with interest.
The transactions were put and call options by reference to the Nikkei 225 Stock Average Index. There was Automatic Early Termination of the Agreement by virtue of the Event of Default arising out of the entry into Chapter 11 bankruptcy proceedings by Lehman's Credit Support Provider (Lehman Brothers Holdings Inc) on 15 September 2008, such that the claimant was the Defaulting Party and the defendant the Non-Defaulting Party. The Tokyo Stock Exchange and Osaka Stock Exchange were closed for a Japanese holiday on 15 September 2008 and did not reopen until 9am the next day; between close on Friday 12 September 2008 and reopening of the market on 16 September 2008 there was a substantial fall in the Nikkei Index as of 16 September and continuing, with the consequence that the value of the four options rose. In the Schedule to the Agreement the parties chose the Market Quotation payment measure to apply on an Event of Default. As such, the Settlement Amount fell to be paid by the Non-Defaulting Party and to be calculated by the Market Quotation unless, by reference to the Settlement Amount provision, (a) Market Quotation could not be determined or (b) a Market Quotation would not produce a commercially reasonable result - in which case, the Loss method would apply.
By letter dated 30 April 2009, the defendant informed the claimant that it had determined that the amount to be paid by it to the claimant in respect of the transactions arising out of the Early Termination was EUR 1,849,968.99 (though this figure was at this stage unsupported by calculations). After an email dated 18 June 2009, by which it submitted calculations which it asserted supported such figure, the defendant paid the said sum on 14 July 2009, together with interest. The claimant claimed that this figure was wrongly calculated and there had been a substantial underpayment.
The Court held that, on the facts, the figures supplied on 18 June 2009 were based on a spot rate, obtained from three banks, which was the closing...