Changes to Preview Schedules IHS Markit will change the existing preview timings for all iBoxx USD and USD High Yield benchmark index families. Additional preview files for the iBoxx USD Liquid Investment Grade and iBoxx USD Liquid High Yield indices will be introduced, along with the other iBoxx USD index families as listed below. The new schedule will ensure a consistent and expanded preview delivery for clients across our suite of global index products.
Please see the table below for more information on when the preview files will be published:
| Publication Type | Current Schedule | New Schedule |
| Preview | Weekly, on a Thursday* | Weekly, on a Friday** |
| Preview | T-10 | 12th calendar day of the month (moved to next business day in case of weekends) |
| Preview (preliminary list) | T-5 | T-4 |
| Preview (preliminary list) | T-3 | T-3 |
| Preview (final list) | T-2 | T-2 |
| Preview (final list update) | T-1 | T-1 |
*For iBoxx USD and iBoxx USD High Yield index families only.
**Previews will be published on the first Friday that is three business days after the previous month-end rebalance.
The changes apply to the following products:
- Markit iBoxx USD Benchmark
- Markit iBoxx USD Liquid Investment Grade
- Markit iBoxx USD Liquid High Yield
- Markit iBoxx USD Liquid Top 30
- Markit iBoxx Contingent Convertibles
- Markit iBoxx USD Emerging Markets Sovereigns
- Markit iBoxx USD Emerging Markets Corporates
- Markit iBoxx ADBI/AHBI
- Markit iBoxx USD Asia ex-Japan
- Markit iBoxx USD Sukuk
- Markit iBoxx FRN Corporates
- Markit iBoxx Infrastructure
Changes to Forward Schedule IHS Markit will also provide the existing daily forward files currently published starting 10 business days prior to month end from the 12th calendar day of a month. Moving the schedule towards a calendar day based schedule is intended to simplify the process and deliver forward files starting earlier within the month.
| Publication Type | Current Schedule | New Schedule |
| Forward File | Each business day, from T-10 | Each business day, from 12th calendar day of the month |
The effective date for the changes to both the preview file schedule and forward file publication is 1 June 2020.
For more information please contact us at
indices@ihsmarkit.com