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Honeywell Aerospace Set to Join S&P 500 & S&P 100; Others to Join S&P MidCap 400 and S&P SmallCap 600 S&P Dow Jones Indices will make the following changes to the S&P 500, S&P 100, S&P MidCap 400, and S&P SmallCap 600: Honeywell Aerospace Inc. (NASD:...

Key Takeaway: S&P Dow Jones Indices announced significant changes to its indices, including the addition of Honeywell Aerospace to the S&P 500 and S&P 100, effective June 29, 2026. Conagra Brands will replace Grid Dynamics Holdings in the S&P SmallCap 600. Other notable changes include Toast Inc. and IES Holdings Inc. joining the S&P MidCap 400.
Price reaction · baseline $230.01 (2026-06-22 close) · hit after-hours · 8 other ABBV headline(s) in the window, move may be shared
day 0 close · peak
+2.1%

Market Sentiment Analysis

POSITIVE FACTORS

  • Honeywell Aerospace is being added to the S&P 500 and S&P 100.
  • Conagra Brands is being moved to the S&P SmallCap 600, indicating a shift in market representation.
  • The changes reflect ongoing corporate restructuring and acquisitions.

Full Press Release Details

NEW YORK , June 23, 2026 /PRNewswire/ -- S&P Dow Jones Indices will make the following changes to the S&P 500, S&P 100, S&P MidCap 400, and S&P SmallCap 600:
• Honeywell Aerospace Inc. (NASD: HONA) will be added to the S&P 500 & 100 on Monday, June 29. Honeywell Aerospace will replace Conagra Brands Inc. (NYSE: CAG ) in the S&P 500, and Conagra Brands will replace Grid Dynamics Holdings Inc.(NASD: GDYN) in the S&P SmallCap 600 effective prior to the opening of trading on Tuesday, June 30. Honeywell Aerospace will replace Honeywell International Inc. (NASD: HON) in the S&P 100 effective prior to the opening of trading on Tuesday, June 30. Honeywell International is spinning off Honeywell Aerospace in a transaction expected to be completed on June 29. Post spin-off Honeywell International will be renamed Honeywell Technologies Inc. and will remain in the S&P 500. Honeywell Aerospace will be more representative of the mega capitalization space. Conagra Brands is more representative of the small capitalization space. Grid Dynamics Holdings is no longer representative of the small capitalization space.
• National Health Investors Inc. (NYSE: NHI ) will replace Apollo Commercial Real Estate Finance Inc. (NYSE: ARI ) in the S&P SmallCap 600 effective prior to the opening of trading on Tuesday, June 30. Apollo Commercial Real Estate Finance has announced ongoing liquidation activities and is no longer appropriate for the S&P SmallCap 600.
• Toast Inc. (NYSE: TOST ) will replace TopBuild Corp. (NYSE: BLD ) in the S&P MidCap 400 effective prior to the opening of trading on Wednesday, July 1. QXO Inc. (NYSE: QXO ) is acquiring TopBuild in a deal expected to close soon, pending final closing conditions.
• IES Holdings Inc. (NASD: IESC) will replace Janus Henderson Group plc. (NYSE: JHG ) in the S&P MidCap 400 effective prior to the opening of trading on Wednesday, July 1. Trian Fund Management LP and General Catalyst Group Management are acquiring Janus Henderson Group in a deal expected to close soon, pending final closing conditions.
Following is a summary of the changes that will take place prior to the open of trading on the effective date:
Effective Date
Index Name
Action
Company Name
Ticker
GICS Sector
June 29, 2026
S&P 100
Addition
Honeywell Aerospace
HONA
Industrials
June 30, 2026
S&P 100
Deletion
Honeywell International
HON
Industrials
June 29, 2026
S&P 500
Addition
Honeywell Aerospace
HONA
Industrials
June 30, 2026
S&P 500
Deletion
Conagra Brands
CAG
Consumer Staples
June 30, 2026
S&P SmallCap 600
Addition
Conagra Brands
CAG
Consumer Staples
June 30, 2026
S&P SmallCap 600
Deletion
Grid Dynamics Holdings
GDYN
Information Technology
June 30, 2026
S&P SmallCap 600
Addition
National Health Investors
NHI
Real Estate
June 30, 2026
S&P SmallCap 600
Deletion
Apollo Commercial Real Estate Finance
ARI
Financials
July 1, 2026
S&P MidCap 400
Addition
Toast
TOST
Financials
July 1, 2026
S&P MidCap 400
Deletion
TopBuild Corp
BLD
Consumer Discretionary
July 1, 2026
S&P MidCap 400
Addition
IES Holdings
IESC
Industrials
July 1, 2026
S&P MidCap 400
Deletion
Janus Henderson Group
JHG
Financials
ABOUT S&P DOW JONES INDICES S&P Dow Jones Indices is the largest global resource for essential index-based concepts, data and research, and home to iconic financial market indicators, such as the S&P 500® and the Dow Jones Industrial Average®. More assets are invested in products based on our indices than products based on indices from any other provider in the world. Since Charles Dow invented the first index in 1884, S&P DJI has been innovating and developing indices across the spectrum of asset classes helping to define the way investors measure and trade the markets.
S&P Dow Jones Indices is a division of S&P Global (NYSE: SPGI ), which provides essential intelligence for individuals, companies, and governments to make decisions with confidence. For more information, visit www.spglobal.com/spdji/en/ .
FOR MORE INFORMATION:
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Frequently Asked Questions

When will Honeywell Aerospace join the S&P 500?

Honeywell Aerospace will join the S&P 500 on June 29, 2026.

What company will Honeywell Aerospace replace in the S&P 100?

Honeywell Aerospace will replace Honeywell International in the S&P 100.

Which company is being added to the S&P MidCap 400?

Toast Inc. will be added to the S&P MidCap 400 on July 1, 2026.

Why is Conagra Brands moving to the S&P SmallCap 600?

Conagra Brands is moving to the S&P SmallCap 600 to better represent small capitalization.

Last updated: Jun 23, 2026