Did High-Yield Credit Spreads Really Widen 29%? What the FRED Series Actually Shows

The New York Stock Exchange building facade

The New York Stock Exchange -- credit spreads, traded in the bond market, often move before equity prices do. Photo: Carol M. Highsmith/Library of Congress, Wikimedia Commons, public domain.

Key takeaways

  • The ICE BofA US High-Yield Option-Adjusted Spread closed at 3.44% on October 30, 2026 and 3.43% on November 2. That is not a 2026 high: the series printed 3.46% on March 30, 2026.
  • The "29% in five weeks" framing depends entirely on which day you start from. Measured over the last 25 trading days to October 30 the rise is 17.4%, from 2.93% on September 25. Measured from the actual 2026 low - 2.60% on August 28, not 2.66% on September 21 - it is 32.3%, over two months rather than five weeks.
  • Most of the move is two days old. The spread was 3.14% on October 28 and 3.44% on October 30, a 9.6% jump in two sessions after four straight sessions of narrowing.
  • The 2008, 2016 and 2020 crisis peaks cannot be checked against this series any more. FRED's own series notes say that starting in April 2026 it carries only three years of observations.

Figures checked: November 4, 2026, against the FRED series BAMLH0A0HYM2 (784 daily observations, November 6, 2023 to November 2, 2026).

The claim, and the four things in the data that can test it

The claim worth testing is the one a reader takes away from a headline like this: that the high-yield spread has just made a sharp, sustained move of a size that signals credit stress building ahead of the stock market. The option-adjusted spread is the extra compensation investors demand to hold a basket of bonds rated BB or below instead of comparable-maturity Treasurys, after stripping out the value of embedded options such as call provisions. When it rises, bond investors are asking for more yield to carry corporate credit risk.

The series itself can test four parts of that claim: whether the current level is unusual, whether the measured move is as large as advertised, how often moves of that size have occurred and what followed them, and whether the historical crisis comparisons can be verified at all. Everything below comes from the daily series as published by ICE Data Indices and distributed through the Federal Reserve Bank of St. Louis, retrieved on November 4, 2026.

Test 1: is 3.44% a notable high? Not within 2026

It is not. The highest reading in 2026 is 3.46%, set on March 30, 2026, seven months before the move this page was written about. The six widest 2026 readings are March 30 at 3.46%, October 30 at 3.44%, November 2 at 3.43%, March 27 at 3.42%, October 22 at 3.40% and October 23 at 3.38%. Four of the six belong to the late-October episode, but the widest two days of the year are split between March and October.

Nor is it a high for the series as published. The three years FRED now carries peak at 4.61% on April 7, 2025, which is 34% above the October 30 reading. A reader told that today's level is "nowhere near" stress has not been told that the same series was a third wider nineteen months ago.

Month end, 2026High-yield OAS
January 302.88%
February 273.12%
March 313.28% (month high 3.46% on March 30)
April 302.83%
May 292.74%
June 302.75%
July 312.85%
August 312.63% (2026 low 2.60% on August 28)
September 303.12%
October 303.44%
November 2 (latest)3.43%

Read down that column and the shape is a round trip, not a trend: wider into late March, back down through the summer to the August low, wider again into the autumn. September 30 to October 30 is a 10.3% rise. The year as a whole has gone from 2.88% to 3.43%.

Test 2: is the move 29%? Only from one chosen start date

Three honest measurements of the same episode, all from the same series:

MeasurementStartEndChangeSpan
Last 25 trading days2.93% (Sep 25, 2026)3.44% (Oct 30, 2026)+17.4%5 trading weeks
From September 212.66% (Sep 21, 2026)3.44% (Oct 30, 2026)+29.3%39 calendar days
From the real 2026 low2.60% (Aug 28, 2026)3.44% (Oct 30, 2026)+32.3%63 calendar days
Last two trading days of the move3.14% (Oct 28, 2026)3.44% (Oct 30, 2026)+9.6%2 sessions

The 29% figure is real arithmetic, but it is the middle measurement, and the start date it uses is not the 2026 low. The 2026 low in this series is 2.60% on August 28, 2026. September 21 at 2.66% is a local low on the way back up, so pairing "29%" with "the 2026 low" states two things that are not true together.

The fourth row is the one that changes the reading most. The session-by-session path into the October 30 close runs 3.40% on October 22, 3.38% on October 23, 3.30% on October 26, 3.18% on October 27, 3.14% on October 28, 3.26% on October 29 and 3.44% on October 30. Four consecutive narrowing sessions, then a two-day jump of 9.6%. And the next published value, November 2, is 3.43% - flat. A five-week trend and a two-day spike call for different responses, and the series says this is closer to the second.

Test 3: how often does a move this size happen, and what followed last time?

Counting directly through the 784 observations FRED now carries: of the 759 days on which a 25-trading-day change can be computed, 9 showed a rise of 29% or more, and 33 showed a rise of 20% or more. All 9 of the 29%-plus days belong to a single episode, in April 2025. So within the data the publisher currently distributes, this is not something that has happened "dozens of times" - it has happened in one other episode.

DateHigh-yield OASWhat it shows
March 21, 20253.21%Before the episode
April 2, 20253.42%Roughly today's level
April 7, 20254.61%Peak; +56.8% over 25 trading days
April 21, 20254.16%Two weeks later
May 2, 20253.60%Three and a half weeks after the peak
May 13, 20253.09%25 trading days after the peak
May 19, 20253.21%Back to the pre-episode level

That is the only comparable episode in the window, and its aftermath is the opposite of escalation: from 4.61% the spread was back to 3.09% within 25 trading days and 3.10% within 50. The National Bureau of Economic Research's business cycle table lists its most recent peak in February 2020 and trough in April 2020, with no recession dated as beginning after 2020 - so no recession followed the one move in this window that was twice the size of the current one.

The trade-off in that comparison should be said plainly. One episode is not a base rate. A single precedent cannot establish that sharp widenings resolve harmlessly, any more than the current move can establish that they do not. What it does establish is that the strongest version of the alarming claim - that a move of this size is itself rare and ominous - is not supported by the only comparable case the publisher's data contains.

Test 4: can the 2008, 2016 and 2020 comparisons be checked? Not here

This is the part that did not survive. An earlier version of this page presented a table of "23 years of history" - an all-time low near 2.33% in June 2007, a long-run median near 4.5%, and crisis peaks of 8.87% in February 2016, 10.87% in March 2020 and 21.82% in December 2008 - and credited the FRED BAMLH0A0HYM2 series for the figures.

FRED no longer carries that history. The series notes on the FRED page state, in the publisher's own words: "Starting in April 2026, this series will only include 3 years of observations. For more data, go to the source." The CSV download returns 784 observations beginning November 6, 2023. The deep-history figures in the earlier table therefore came from third-party metric pages that republish the series, not from the primary distributor, and this run could not verify any of them. They have been removed rather than re-attributed, because a crisis-peak comparison is exactly the kind of number that should not rest on a republisher.

The same applies to the "long-run median of roughly 4.5%". It cannot be checked against the available series, and it conflicts with what the available series shows: across the three years FRED does publish, the median is 3.02% and the widest single reading is 4.61%. If the long-run median really were 4.5%, then almost the entire last three years would sit below the historical midpoint - which may be true, but a reader should be told it is an assertion from a source that cannot be opened, not a measurement.

Where 3.44% actually sits in the data that can be opened

Statistic, Nov 6 2023 to Nov 2 2026 (784 daily observations)Value
Minimum2.59% (January 22, 2025)
25th percentile2.80%
Median3.02%
75th percentile3.23%
90th percentile3.51%
Maximum4.61% (April 7, 2025)
October 30, 2026 reading3.44%, at the 87.6th percentile
First observation in the window4.00% (November 6, 2023)

So the level is genuinely elevated relative to the recent past - wider than roughly seven of every eight days in the last three years - and simultaneously below where the series started three years ago and well below its three-year high. Both of those statements are true, and a reader given only one of them has been given the chart's conclusion rather than the chart.

What this cannot settle

Three limits. The index blends every rating tier below investment grade, so a move at the index level does not say whether the widening came from BB-rated issuers or from the CCC-and-below tier where default premiums are steepest; that requires the rating-bucket series separately. The series is a daily market price, so a single close - including the October 30 close this page is named for - carries no information about whether the move persists. And because FRED's window now stops at three years, nothing here can place the current level against 2008, 2016 or 2020 without going to the index provider directly.

If the question were how to read this number without a terminal, the defensible method is the one used above: take the series the publisher distributes, measure the move over a fixed window rather than from a chosen low, check where the level sits in the distribution of the same series, and say which of the familiar historical comparisons you were unable to open. On that method the honest summary of October 30, 2026 is a two-day jump to a level that is high for the last three years, below the same year's March high, and well below the same series' April 2025 peak.

FAQ

What was the high-yield credit spread on October 30, 2026?

3.44%, per the ICE BofA US High-Yield Index Option-Adjusted Spread as distributed by FRED. The next published value, November 2, 2026, was 3.43%.

Did high-yield spreads really widen 29% in five weeks?

Only from a particular start date. From September 21, 2026 at 2.66% to October 30 at 3.44% is a 29.3% rise over 39 calendar days. Over the last 25 trading days to October 30 the rise is 17.4%, from 2.93% on September 25.

What was the 2026 low in the high-yield spread?

2.60%, on August 28, 2026. The 2026 high is 3.46%, on March 30, 2026.

Is 3.44% a high level for this spread?

It is high for the recent past and not high for the series' own three-year range. It sits at the 87.6th percentile of the 784 daily observations from November 2023 onward, against a median of 3.02%, a three-year maximum of 4.61% and a reading of 4.00% at the start of that window.

Where can I check this data myself?

The series ticker is BAMLH0A0HYM2, published by ICE Data Indices and distributed free through the Federal Reserve Bank of St. Louis. Note the series notes on that page: starting in April 2026 it carries only three years of observations, so older values have to come from the index provider.

Does a widening spread mean a recession is coming?

Not on this evidence. The one comparable widening in the available window peaked at 4.61% in April 2025 and was back near 3.1% within 25 trading days, and the National Bureau of Economic Research lists no recession beginning after 2020. One precedent is not a base rate, which is the reason to treat a single spread reading as one input rather than a signal.

Tip: Credit spreads are one of those indicators that only teach you something if you write down what you thought at the time - keeping an investment journal entry for moves like this lets you check your own reasoning a year later. If you want the background on why spreads behave the way they do across cycles, a solid stock market investing book covers far more ground than any single chart. (These are Amazon Associate links - we may earn a small commission on qualifying purchases.)

Related reading

Correction November 4, 2026: the 2026 low was corrected from 2.66% on September 21 to 2.60% on August 28, 2026; the statement that this is a notable high was corrected because the series printed 3.46% on March 30, 2026; and the table of 2007, 2008, 2016 and 2020 levels attributed to FRED was removed because FRED's series notes state the series carries only three years of observations starting in April 2026, so none of those figures could be verified against the primary distributor (FRED series BAMLH0A0HYM2, retrieved November 4, 2026).

Sources

Method note: percentiles, the median, the 25-trading-day change counts and the April 2025 aftermath figures on this page were computed directly from the FRED CSV series on November 4, 2026, not taken from a third-party summary. Where an earlier figure could not be traced to the index provider or its distributor, it was removed rather than repeated.

This article is for general informational and educational purposes only and does not constitute investment, financial, or legal advice. Past market levels do not predict future results. Consult a licensed financial advisor before making investment decisions.

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