@laguiar Note that the LSE closed early at 12:30 on New Years Eve. There were subsequent changes in the GBPUSD rate by the time of your screenshot at 16:00. So value of a share in VUSA and VUSD could be different in euro terms at 16:00, even if they had been identical at the close of LSE at 12:30. Indeed a quick calculation shows that 5075.16/5079.44 is very close to the depreciation of GBP against USD between 12.30 and 16:00.