Flex Set to Join S&P MidCap 400; Azenta and Concentra Group Holdings to Join S&P SmallCap 600

Q: When will Concentra (CON) be added to the S&P SmallCap 600?

Concentra will be added prior to the open on Nov 27, 2024 . According to S&P Dow Jones Indices, the change follows Select Medical's planned distribution of majority CON shares on Nov 26, 2024 .

Q: What does the Select Medical distribution of Concentra shares mean for CON shareholders?

Select Medical is distributing 80% of Concentra shares to shareholders expected on Nov 26, 2024 . According to S&P Dow Jones Indices, that distribution enables Concentra's standalone inclusion in the S&P SmallCap 600.

Q: Why is Flex (FLEX) joining the S&P MidCap 400 on Nov 25, 2024?

Flex will replace Azenta in the S&P MidCap 400 effective Nov 25, 2024 . According to S&P Dow Jones Indices, Azenta's market cap no longer represented the mid-cap space, prompting the swap.

Rhea-AI Impact

(Moderate)

Rhea-AI Sentiment

(Neutral)

Rhea-AI Summary

Concentra Group Holdings (NYSE: CON) will be added to the S&P SmallCap 600 effective prior to the open on Nov 27, 2024, replacing Myers Industries. Select Medical is distributing 80% of Concentra shares to shareholders in a transaction expected on Nov 26, 2024. Separately, Flex (FLEX) will join the S&P MidCap 400 on Nov 25, 2024, while Azenta (AZTA) moves to the S&P SmallCap 600 as Envestnet (ENV) is removed ahead of a Bain Capital acquisition.

Positive

Concentra (CON) addition to S&P SmallCap 600 effective Nov 27, 2024
Select Medical to distribute 80% of Concentra shares to shareholders on Nov 26, 2024
Flex (FLEX) to join S&P MidCap 400 effective Nov 25, 2024
Azenta (AZTA) to be added to S&P SmallCap 600 effective Nov 25, 2024

Negative

Myers Industries (MYE) removed from S&P SmallCap 600 for being no longer representative of small-cap
Envestnet (ENV) removed from S&P SmallCap 600 ahead of Bain Capital acquisition expected to close soon
Azenta (AZTA) removed from S&P MidCap 400 due to market capitalization no longer representing mid-cap

Market Context

This announcement details that Myers Industries will be deleted from the S&P SmallCap 600 effective ...

Analysis

This announcement details that Myers Industries will be deleted from the S&P SmallCap 600 effective prior to trading on November 25, 2024, as its market capitalization is no longer representative of the small-cap space. Previously, the company reported stronger 2025 results and maintained a regular dividend of $0.135 per share. Investors watching this development may focus on how index-related ownership changes interact with Myers’ existing uptrend and prior improvements in profitability, cash flow, and governance.

Key Figures

Index effective date: Nov 25, 2024 Second index date: Nov 27, 2024 Stake distributed: 80% +1 more

4 metrics

Index effective date Nov 25, 2024 Date MYE is deleted from S&P SmallCap 600

Second index date Nov 27, 2024 Effective date for additional S&P SmallCap 600 changes

Stake distributed 80% Select Medical’s ownership in Concentra Group Holdings distributed to shareholders

52-week high $24.03 MYE 52-week high before index deletion announcement

Historical Context

5 past events · Latest: Mar 31 (Neutral)

Pattern 5 events

Date	Event	Sentiment	24h Move	Catalyst
Mar 31	Earnings call schedule	Neutral	+0.8%	Announcement of Q1 2026 reporting date and investor conference call.
Mar 05	Earnings results	Positive	+4.6%	Stronger 2025 Q4 and full-year results with higher EPS and free cash flow.
Feb 27	Dividend declared	Positive	-1.4%	Quarterly cash dividend of $0.135 per share announced for shareholders.
Feb 02	Reporting schedule	Neutral	+1.1%	Schedule for 2025 Q4/full-year results and 2026 annual meeting set.
Jan 13	Peer CEO change	Neutral	+0.1%	Former MYE CEO named CEO of Valtris Specialty Chemicals, a portfolio company.

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

Pattern Detected

MYE has generally reacted positively to fundamental updates like earnings, with occasional divergences around capital return announcements.

Recent Company History

Over the past several months, Myers Industries reported stronger 2025 results with higher EPS and improved cash flow, announced a regular quarterly dividend of $0.135 per share, and scheduled multiple earnings calls and its April 23, 2026 annual meeting. Governance and leadership changes were highlighted in recent proxy materials, alongside cost savings and debt reduction. Against this backdrop of operational improvement and shareholder returns, today’s news that Myers will be deleted from the S&P SmallCap 600 due to market capitalization adds an index-composition angle to an otherwise fundamentally focused story.

Key Terms

s&p midcap 400, s&p smallcap 600, gics sector

3 terms

s&p midcap 400 financial

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

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.

gics sector financial

GICS sector is one of the major industry groupings from the Global Industry Classification Standard, a system that sorts companies into consistent categories (like Technology or Health Care) based on the primary business they do. Investors use these sectors like folders in a filing cabinet to compare companies, build diversified portfolios, and track how whole parts of the market are performing rather than focusing on single stocks.

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

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11/19/2024 - 05:56 PM

NEW YORK, Nov. 19, 2024 /PRNewswire/ -- S&P Dow Jones Indices will make the following changes to the S&P MidCap 400 and S&P SmallCap 600:

Flex Ltd (NASD: FLEX) will replace Azenta Inc. (NASD: AZTA) in the S&P MidCap 400, and Azenta will replace Envestnet Inc. (NYSE: ENV) in the S&P SmallCap 600 effective prior to the opening of trading on Monday, November 25. Bain Capital is acquiring Envestnet in a deal expected to be completed soon, pending final closing conditions. Azenta's market capitalization is no longer representative of the mid-cap market space.
Concentra Group Holdings Inc. (NYSE: CON) will replace Myers Industries Inc. (NYSE: MYE) in the S&P SmallCap 600 effective prior to the opening of trading on Wednesday, November 27. S&P SmallCap 600 constituent Select Medical Holdings Corp. (NYSE: SEM) is distributing the 80% of shares of Concentra Group Holdings it owns to shareholders in a transaction expected to be completed on November 26. Myers Industries' market capitalization is no longer representative of the small-cap market space.

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
Nov 25, 2024	S&P MidCap 400	Addition	Flex	FLEX	Information Technology
Nov 25, 2024	S&P MidCap 400	Deletion	Azenta	AZTA	Health Care
Nov 25, 2024	S&P SmallCap 600	Addition	Azenta	AZTA	Health Care
Nov 25, 2024	S&P SmallCap 600	Deletion	Envestnet	ENV	Information Technology
Nov 27, 2024	S&P SmallCap 600	Addition	Concentra Group Holdings	CON	Health Care
Nov 27, 2024	S&P SmallCap 600	Deletion	Myers Industries	MYE	Materials

For more information about S&P Dow Jones Indices, please visit www.spdji.com

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.spdji.com.

FOR MORE INFORMATION:

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View original content:https://www.prnewswire.com/news-releases/flex-set-to-join-sp-midcap-400-azenta-and-concentra-group-holdings-to-join-sp-smallcap-600-302310669.html

SOURCE S&P Dow Jones Indices

FAQ

When will Concentra (CON) be added to the S&P SmallCap 600?

Concentra will be added prior to the open on Nov 27, 2024. According to S&P Dow Jones Indices, the change follows Select Medical's planned distribution of majority CON shares on Nov 26, 2024.

What does the Select Medical distribution of Concentra shares mean for CON shareholders?

Select Medical is distributing 80% of Concentra shares to shareholders expected on Nov 26, 2024. According to S&P Dow Jones Indices, that distribution enables Concentra's standalone inclusion in the S&P SmallCap 600.

Why is Flex (FLEX) joining the S&P MidCap 400 on Nov 25, 2024?

Flex will replace Azenta in the S&P MidCap 400 effective Nov 25, 2024. According to S&P Dow Jones Indices, Azenta's market cap no longer represented the mid-cap space, prompting the swap.

Why was Azenta (AZTA) moved to the S&P SmallCap 600 on Nov 25, 2024?

Azenta was moved because its market capitalization is no longer representative of the mid-cap market space. According to S&P Dow Jones Indices, Azenta will join the S&P SmallCap 600 effective Nov 25, 2024.

Why was Envestnet (ENV) deleted from the S&P SmallCap 600 ahead of Nov 25, 2024?

Envestnet was removed because Bain Capital is acquiring the company in a deal expected to close soon. According to S&P Dow Jones Indices, Envestnet will be deleted prior to the open on Nov 25, 2024.