Diurn
MIC codes / GSEF

GSEF

GFI SWAPS EXCHANGE, LLC

NEW YORK, US

Trading days

Answered by the national calendar for US.

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

Hours on an ordinary day, America/New_York time: 09:30–16:00corroborated

Coming up

Thu, 26 Nov 2026Thanksgiving DayClosed
Fri, 27 Nov 2026Day after Thanksgiving09:30–13:00Early close
Thu, 24 Dec 2026Christmas Eve09:30–13:00Early close
Fri, 25 Dec 2026Christmas DayClosed
Fri, 1 Jan 2027New Year's DayClosed

Recently

Mon, 7 Sept 2026Labor DayClosed

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

Registry record

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

Operating MICGSEF
TypeOPRT
Market nameGFI SWAPS EXCHANGE, LLC
Legal entityGFI SWAPS EXCHANGE LLC
LEI549300U3YSKW7QY13Y70
Market categorySEFS
AcronymGFI SEF
CountryUS
CityNEW YORK
WebsiteWWW.GFIGROUP.COM/MARKETS/SWAPS-EXCHANGE/OVERVIEW.ASPX
StatusACTIVE
Created2014-08-25
Last updated2023-10-23
CommentsSWAPS EXECUTION FACILITY.

Segments

MICs whose operating MIC is GSEF.

  • GSBS GFI SWAPS EXCHANGE, LLC - SECURITY BASED SWAPS