Krystal Biotech Set to Join S&P MidCap 400; Tutor Perini and V2X to Join S&P SmallCap 600

S&P Dow Jones Indices announced changes to the S&P MidCap 400 and S&P SmallCap 600 effective before trading on July 24 and July 27, 2026.

Rhea-AI Summary

S&P Dow Jones Indices announced changes to the S&P MidCap 400 and S&P SmallCap 600 effective before trading on July 24 and July 27, 2026. On July 24, Krystal Biotech (KRYS) will move from the S&P SmallCap 600 to join the S&P MidCap 400, replacing Taylor Morrison Home (TMHC). Tutor Perini (TPC) will be added to the S&P SmallCap 600, replacing Krystal Biotech.

According to S&P Dow Jones Indices, Berkshire Hathaway (BRK.A/BRK.B) is acquiring Taylor Morrison Home, with closing expected on or about July 24, pending final conditions. On July 27, V2X (VVX) will join the S&P SmallCap 600, replacing Avanos Medical (AVNS), which is being acquired by American Industrial Partners, also pending final closing conditions.

Argus Jul 21 session 3 alerts

+3.57% close to close 0.3x rel. volume Open Argus

Details

News Market Reaction – VVX

$2.37B Market Cap

In the Jul 21 session, VVX gained 3.57%, reflecting a moderate positive market reaction. Our momentum scanner triggered 3 alerts that day, indicating moderate trading interest and price volatility.

Data tracked by StockTitan Argus on the day of publication.

Market Context

V2X’s recent news reactions ranged from -7.06% to +3.52%, showing mixed historical responses. Agains...

Analysis

V2X’s recent news reactions ranged from -7.06% to +3.52%, showing mixed historical responses. Against that record, the index change remains an informational event, while the platform categorized short positioning as low and reported no recent insider activity.

Key Figures

Index change effective date: July 24, 2026 Index change effective date: July 27, 2026

Index change effective date

July 24, 2026

V2X deletion from the S&P SmallCap 600

Index change effective date

July 27, 2026

V2X peer index change

Historical Context

5 past events · Latest: Jul 14

5 events

1. Jul 14

   Earnings scheduling

   24h Move

   -0.2%

   Scheduled second-quarter results release and conference call logistics

2. Jun 05

   Conference participation

   24h Move

   +1.5%

   Management participation in an industrials and materials conference fireside chat

3. Jun 03

   Debt repricing

   24h Move

   -0.6%

   Term loan repricing lowered borrowing costs and reduced the interest-rate floor

4. May 18

   Contract award

   24h Move

   +3.5%

   U.S. Navy contract supported aircraft survivability systems modernization

5. May 07

   Secondary offering

   24h Move

   -7.1%

   Vertex Aerospace priced a secondary sale without proceeds going to V2X

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Key Terms

s&p midcap 400, s&p smallcap 600

2 terms

s&p midcap 400 financial

"S&P SmallCap 600 constituent Krystal Biotech Inc. will replace Taylor Morrison"

The S&P MidCap 400 is a group of 400 companies that are smaller than the big, well-known corporations but larger than tiny startups. It helps investors see how medium-sized companies are performing in the stock market, acting like a barometer for this middle-sized group of businesses.

s&p smallcap 600 financial

"S&P SmallCap 600 constituent Krystal Biotech Inc. will replace Taylor Morrison"

A stock market index made up of 600 small-cap U.S. companies chosen to represent the performance of smaller publicly traded firms. It matters to investors because it acts like a temperature gauge for the small-company segment of the market, serving as a benchmark for fund managers, a basis for index funds and ETFs, and a way to compare returns and risk when building a diversified portfolio.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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NEW YORK, July 20, 2026 /PRNewswire/ -- S&P Dow Jones Indices will make the following changes to the S&P MidCap 400, S&P SmallCap 600: 

• S&P SmallCap 600 constituent Krystal Biotech Inc. (NASD: KRYS) will replace Taylor Morrison Home Corp. (NYSE: TMHC) in the S&P MidCap 400, and Tutor Perini Corp. (NYSE: TPC) will replace Krystal Biotech in the S&P SmallCap 600 effective prior to the opening of trading on Friday, July 24. S&P 500 & 100 constituent Berkshire Hathaway Inc. (NYSE: BRK.A/BRK.B) is acquiring Taylor Morrison Home in a deal expected to close on or about that date, pending final closing conditions.
    
• V2X Inc. (NYSE: VVX) will replace Avanos Medical Inc. (NYSE: AVNS) in the S&P SmallCap 600 effective prior to the opening of trading on Monday, July 27. American Industrial Partners is acquiring Avanos Medical 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
July 24, 2026	S&P MidCap 400	Addition		Krystal Biotech	KRYS	Health Care
July 24, 2026	S&P MidCap 400	Deletion		Taylor Morrison Home	TMHC	Consumer Discretionary
July 24, 2026	S&P SmallCap 600	Addition		Tutor Perini Corp	TPC	Industrials
July 24, 2026	S&P SmallCap 600	Deletion		Krystal Biotech	KRYS	Health Care
July 27, 2026	S&P SmallCap 600	Addition		V2X	VVX	Industrials
July 27, 2026	S&P SmallCap 600	Deletion		Avanos Medical	AVNS	Health Care

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:

S&P Dow Jones Indices
index_services@spglobal.com

Media Inquiries
spdji.comms@spglobal.com

View original content:https://www.prnewswire.com/news-releases/krystal-biotech-set-to-join-sp-midcap-400-tutor-perini-and-v2x-to-join-sp-smallcap-600-302830022.html

SOURCE S&P Dow Jones Indices

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What index change is planned for Krystal Biotech (KRYS) on July 24, 2026?

Krystal Biotech will move from the S&P SmallCap 600 to the S&P MidCap 400 on July 24, 2026. According to S&P Dow Jones Indices, KRYS will replace Taylor Morrison Home in the MidCap 400 and be deleted from the SmallCap 600 simultaneously.

Why is Taylor Morrison Home (TMHC) being removed from the S&P MidCap 400?

Taylor Morrison Home will be removed from the S&P MidCap 400 because Berkshire Hathaway is acquiring the company. According to S&P Dow Jones Indices, the deal is expected to close on or about July 24, 2026, pending final closing conditions, triggering TMHC’s deletion.

When will Tutor Perini (TPC) and V2X (VVX) join the S&P SmallCap 600?

Tutor Perini will join the S&P SmallCap 600 on July 24, 2026, and V2X will join on July 27, 2026. According to S&P Dow Jones Indices, Tutor Perini replaces Krystal Biotech, while V2X replaces Avanos Medical following its pending acquisition.

What happens to Avanos Medical (AVNS) in the S&P SmallCap 600 after its acquisition?

Avanos Medical will be deleted from the S&P SmallCap 600 on July 27, 2026. According to S&P Dow Jones Indices, American Industrial Partners is acquiring Avanos Medical, and V2X will be added to the index as its replacement, pending final closing conditions.

How are Berkshire Hathaway (BRK) and American Industrial Partners involved in these S&P index changes?

Berkshire Hathaway is acquiring Taylor Morrison Home, and American Industrial Partners is acquiring Avanos Medical. According to S&P Dow Jones Indices, these pending acquisitions prompt TMHC’s removal from the S&P MidCap 400 and AVNS’s removal from the S&P SmallCap 600, with new companies added.

Which GICS sectors are affected by the July 2026 S&P MidCap 400 and SmallCap 600 changes?

The changes affect Health Care, Consumer Discretionary, and Industrials sectors. According to S&P Dow Jones Indices, Krystal Biotech and Avanos Medical are Health Care, Taylor Morrison Home is Consumer Discretionary, and Tutor Perini and V2X are Industrials within their respective S&P indices.