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Index change event
S&P index changes, effective 29 and 30 June and 1 July 2026
The Honeywell Aerospace spin-off joined the S&P 500 and the S&P 100, and Honeywell International left the S&P 100. Conagra Brands dropped from the S&P 500 to the SmallCap 600.
Announced
2026-06-23
Effective
June 28, 2026 at 5:00:00 PM
Indexes Affected
4
What happened to the prices
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Honeywell Aerospace joined two indexes on the same day.
The changes run over three dates, from 29 June to 1 July.
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The changes, index by index
An empty cell means the company was not in the S&P family before, or left it.
S&P 500
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
Honeywell Aerospace | HONA | S&P 500 | 06/29/2026 |
S&P MidCap 400
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
IES Holdings | IESC | S&P MidCap 400 | 07/01/2026 | |
Toast | TOST | S&P MidCap 400 | 07/01/2026 |
S&P SmallCap 600
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
Conagra Brands | CAG | S&P 500 | S&P SmallCap 600 | 06/30/2026 |
National Health Investors | NHI | S&P SmallCap 600 | 06/30/2026 |
S&P 100
Company | Ticker | Source Index | Final Index | Effective Date |
|---|---|---|---|---|
Honeywell Aerospace | HONA | S&P 100 | 06/29/2026 |
Price reaction
The close price is the last price before the announcement. All percentages are measured from the open price after the announcement.
Additions
Company | Ticker | Close Price | Open Price at Announcement | % Change +5 min | % Change +30 min | % Change at 20:00 Hrs | % Highest Change by Next Day Close |
|---|---|---|---|---|---|---|---|
Honeywell Aerospace | HONA | 245.00 | +5.71% | ||||
Honeywell Aerospace | HONA | 245.00 | +5.71% | ||||
IES Holdings | IESC | 355.27 | +9.78% | ||||
Toast | TOST | 24.51 | +8.18% | ||||
Conagra Brands | CAG | 13.43 | +1.71% | ||||
National Health Investors | NHI | 73.03 | +5.04% |
Deletions
Company | Ticker | Close Price | Open Price at Announcement | % Change +5 min | % Change +30 min | % Change at 20:00 Hrs | % Highest Change by Next Day Close |
|---|---|---|---|---|---|---|---|
Honeywell International | HON | 233.21 | +2.90% | ||||
Janus Henderson Group | JHG | ||||||
TopBuild | BLD | ||||||
Apollo Commercial Real Estate Finance | ARI | 10.91 | +0.00% | ||||
Grid Dynamics Holdings | GDYN | 5.42 | +2.21% |
Not a Investment Advice
This page is research about past price behaviour. It is not a recommendation to buy or sell.
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