Diurn
MIC codes / MSSI

MSSI

MORGAN STANLEY AND CO. INTERNATIONAL PLC - SYSTEMATIC INTERNALISER

LONDON, GB · a segment of MSIP

Trading days

Answered by the national calendar for GB.

Oct 2026
Nov 2026
Dec 2026
OpenWeekendClosedEarly closeOpen for some productsSofter: most markets also closedBeyond what we can answerToday

Hours on an ordinary day, Europe/London time: 08:00–16:35verified

Coming up

Thu, 24 Dec 2026Christmas Eve08:00–12:35Early close
Fri, 25 Dec 2026Christmas DayClosed
Mon, 28 Dec 2026Boxing DayClosed
Thu, 31 Dec 2026New Year's Eve08:00–12:35Early close
Fri, 1 Jan 2027New Year's DayClosed

Recently

Nothing out of the ordinary.

From the API

The same answers, live, for any date the calendar reaches. Asking whether a venue is open needs no key.

curl https://api.diurn.io/v1/venues/MSSI/status
curl "https://api.diurn.io/v1/venues/MSSI/sessions?from=2026-11-06&to=2027-01-07"

Registry record

ISO 10383, as published on 2026-10-12.

Operating MICMSIP
TypeSGMT
Market nameMORGAN STANLEY AND CO. INTERNATIONAL PLC - SYSTEMATIC INTERNALISER
LEI4PQUHN3JPFGFNF3BB653
Market categorySINT
CountryGB
CityLONDON
WebsiteWWW.MORGANSTANLEY.COM
StatusACTIVE
Created2017-05-22
Last updated2018-04-23
CommentsSYSTEMATIC INTERNALISER.