Level Chart


Level Chart

Basic Info

US Corporate Master Option-Adjusted Spread is at 0.79%, compared to 0.78% the previous market day and 1.05% last year. This is lower than the long term average of 1.46%.

The ICE BofA Option-Adjusted Spreads (OASs) are the calculated spreads between a computed OAS index of all bonds in a given rating category and a spot Treasury curve. An OAS index is constructed using each constituent bond's OAS, weighted by market capitalization. The Corporate Master OAS uses an index of bonds that are considered investment grade (those rated BBB or better). When the last calendar day of the month takes place on the weekend, weekend observations will occur as a result of month ending accrued interest adjustments.

Stats

Last Value 0.79%
Latest Period May 07 2026
Last Updated May 8 2026, 11:31 EDT
Next Release May 11 2026, 10:00 EDT
Long Term Average 1.46%
Average Growth Rate 3.47%
Value from The Previous Market Day 0.78%
Change from The Previous Market Day 1.28%
Value from 1 Year Ago 1.05%
Change from 1 Year Ago -24.76%
Frequency Market Daily
Unit Percent
Adjustment N/A

Historical Data

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Date Value
May 07, 2026 0.79%
May 06, 2026 0.78%
May 05, 2026 0.79%
May 04, 2026 0.80%
May 01, 2026 0.81%
April 30, 2026 0.81%
April 29, 2026 0.81%
April 28, 2026 0.81%
April 27, 2026 0.81%
April 24, 2026 0.80%
April 23, 2026 0.80%
April 22, 2026 0.79%
April 21, 2026 0.80%
April 20, 2026 0.81%
April 17, 2026 0.80%
April 16, 2026 0.81%
April 15, 2026 0.80%
April 14, 2026 0.81%
April 13, 2026 0.82%
April 10, 2026 0.82%
April 09, 2026 0.83%
April 08, 2026 0.83%
April 07, 2026 0.86%
April 06, 2026 0.85%
April 03, 2026 0.86%
Date Value
April 02, 2026 0.86%
April 01, 2026 0.87%
March 31, 2026 0.90%
March 30, 2026 0.93%
March 27, 2026 0.91%
March 26, 2026 0.88%
March 25, 2026 0.87%
March 24, 2026 0.87%
March 23, 2026 0.88%
March 20, 2026 0.88%
March 19, 2026 0.90%
March 18, 2026 0.91%
March 17, 2026 0.92%
March 16, 2026 0.94%
March 13, 2026 0.93%
March 12, 2026 0.91%
March 11, 2026 0.88%
March 10, 2026 0.84%
March 09, 2026 0.85%
March 06, 2026 0.84%
March 05, 2026 0.82%
March 04, 2026 0.82%
March 03, 2026 0.84%
March 02, 2026 0.85%
February 28, 2026 0.86%

Basic Info

US Corporate Master Option-Adjusted Spread is at 0.79%, compared to 0.78% the previous market day and 1.05% last year. This is lower than the long term average of 1.46%.

The ICE BofA Option-Adjusted Spreads (OASs) are the calculated spreads between a computed OAS index of all bonds in a given rating category and a spot Treasury curve. An OAS index is constructed using each constituent bond's OAS, weighted by market capitalization. The Corporate Master OAS uses an index of bonds that are considered investment grade (those rated BBB or better). When the last calendar day of the month takes place on the weekend, weekend observations will occur as a result of month ending accrued interest adjustments.

Stats

Last Value 0.79%
Latest Period May 07 2026
Last Updated May 8 2026, 11:31 EDT
Next Release May 11 2026, 10:00 EDT
Long Term Average 1.46%
Average Growth Rate 3.47%
Value from The Previous Market Day 0.78%
Change from The Previous Market Day 1.28%
Value from 1 Year Ago 1.05%
Change from 1 Year Ago -24.76%
Frequency Market Daily
Unit Percent
Adjustment N/A