RE: Shorttracker increase9 Sep 2023 10:49
They definitely increased it on 6th September 2023 not the 7th.
FCA website
How to make a notification
You must send your notification to us through our Electronic Submission System, following the registration of reporting persons and position holders.
You should send your positions by 3.30pm on the trading day after the day the position was reached. All calculations should be made as at midnight on the trading day the position was reached.