Cboe Europe has announced the addition of London AIM securities on the AMSM market segment to its on-exchange symbol universe, effective Tuesday, May 27, 2025.

London AIM securities on the AMSM market segment of AIM will be available for trading on the Cboe BXE and CXE Lit and Dark order books, the Periodic Auction book, Closing Cross (3C), Cboe BIDS Europe and reportable as Exchange Trade Reports (ETRs).

Regular Cboe BXE and CXE trading hours apply: 08:00 – 16:30 for orders followed by the 3C session from 16:30 -16:55 and 07:50 – 18:00 for ETRs (London time).

Market data for London AIM securities will be disseminated on the existing London Units 1, 2 and 3 and are included as part of existing market data licenses.

London AIM securities will use the existing London risk limits in the client portal.