Vertiv Holdings, Lumentum Holdings, Coherent, and EchoStar Set to Join S&P 500; Others to Join S&P 100, S&P MidCap 400, and S&P SmallCap 600

S&P Dow Jones Indices announced index membership changes effective Mar 13 and Mar 23, 2026, moving multiple companies across the S&P 100, S&P 500, S&P MidCap 400 and S&P SmallCap 600.

Rhea-AI Summary

S&P Dow Jones Indices announced index membership changes effective Mar 13 and Mar 23, 2026, moving multiple companies across the S&P 100, S&P 500, S&P MidCap 400 and S&P SmallCap 600.

Notable moves: Vertiv (VRT), Lumentum (LITE), Coherent (COHR), EchoStar (SATS) are added to the S&P 500 on Mar 23, while Lamb Weston (LW) is removed from the S&P 500 and moved to the S&P SmallCap 600 on the same date.

Positive

• 4 companies added to S&P 500 effective Mar 23, 2026
• Index rebalancing aims to better reflect market-cap ranges on Mar 23

Negative

• Lamb Weston (LW) removed from S&P 500 effective Mar 23, 2026
• Multiple deletions from S&P 100 and MidCap 400 may reduce index exposure

Argus Mar 9 session

+5.18% close to close Open Argus

Details

News Market Reaction – GEV

On Mar 9, the first trading day after this news, GEV closed 5.18% above the previous close.

Data tracked by StockTitan Argus for the Mar 9 session.

Key Figures

Quarterly dividend: $0.50 per share Senior notes offering: $2.6 billion total Prolec GE acquisition: $5.275 billion +5 more

Quarterly dividend

$0.50 per share

Declared for payment on April 14, 2026

Senior notes offering

$2.6 billion total

Closed public offering of senior notes on Feb 4, 2026

Prolec GE acquisition

$5.275 billion

Remaining 50% stake, funded with mix of cash and debt

2025 orders

$59 billion

As disclosed in 2026 proxy statement

2025 revenue

$38 billion

As disclosed in 2026 proxy statement

Backlog

$150 billion

Supports future growth per 2026 proxy statement

Prolec GE workforce

10,000 employees

Across seven manufacturing sites in the Americas

Insider share sale

5,300 shares at $850.00

Chief People Officer open-market sale on March 3, 2026

Historical Context

5 past events · Latest: Feb 17

5 events

1. Feb 17

   Dividend declaration

   24h Move

   -0.2%

   Announced $0.50 quarterly dividend with April 14, 2026 payment date.

2. Feb 04

   Debt offering closed

   24h Move

   -1.2%

   Closed $2.6B senior notes offering across three maturities.

3. Feb 03

   Strategic alliance

   24h Move

   +3.4%

   Signed long-term alliance with Xcel Energy for turbines and grid projects.

4. Feb 02

   Acquisition closed

   24h Move

   +3.4%

   Completed remaining 50% Prolec GE acquisition for $5.275B.

5. Feb 02

   Debt offering launch

   24h Move

   +3.9%

   Launched senior notes offering to fund Prolec GE stake purchase.

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

Key Terms

s&p 500, s&p smallcap 600, gics sector

3 terms

s&p 500 financial

"home to iconic financial market indicators, such as the S&P 500® and the Dow Jones"

The S&P 500 is a broad stock market index that tracks the performance of 500 large U.S. companies, weighted so bigger firms have a larger impact. Investors use it like a thermometer or benchmark to judge how the overall U.S. stock market or a portfolio is doing; movements in the index influence investor sentiment, fund performance, and many passive investment products that aim to match its returns.

View in glossary

s&p smallcap 600 financial

"NAPCO Security Technologies Inc. (NASD: NSSC) will replace Alexander & Baldwin Inc. in the S&P SmallCap 600"

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 technical

"Effective Date | Index Name | Action | Company Name | Ticker | GICS Sector"

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.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

NEW YORK, March 6, 2026 /PRNewswire/ -- S&P Dow Jones Indices ("S&P DJI") will make the following changes to the S&P 100, S&P 500, S&P MidCap 400, and S&P SmallCap 600 indices:

• NAPCO Security Technologies Inc. (NASD: NSSC) will replace Alexander & Baldwin Inc. (NYSE: ALEX) in the S&P SmallCap 600 effective prior to the opening of trading on Friday, March 13. An investor group comprised of MW Group and funds affiliated with DivcoWest and Blackstone Real Estate is acquiring Alexander & Baldwin in a deal that is expected to close soon, pending final closing conditions.
  
  
• The following changes to the S&P 100, S&P 500, S&P MidCap 400, and S&P SmallCap 600 will take effect before the market opens on Monday, March 23, as part of the quarterly rebalance. The changes ensure that each index is more representative of its market–capitalization range. The companies being removed from the S&P SmallCap 600 are 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
Mar 13, 2026	S&P SmallCap 600	Addition	NAPCO Security Technologies	NSSC	Information Technology
Mar 13, 2026	S&P SmallCap 600	Deletion	Alexander & Baldwin	ALEX	Real Estate
Mar 23, 2026	S&P 100	Addition	Micron Technology	MU	Information Technology
Mar 23, 2026	S&P 100	Addition	Lam Research	LRCX	Information Technology
Mar 23, 2026	S&P 100	Addition	Applied Materials	AMAT	Information Technology
Mar 23, 2026	S&P 100	Addition	GE Vernova	GEV	Industrials
Mar 23, 2026	S&P 100	Deletion	PayPal Holdings	PYPL	Financials
Mar 23, 2026	S&P 100	Deletion	American Intl Group	AIG	Financials
Mar 23, 2026	S&P 100	Deletion	Metlife	MET	Financials
Mar 23, 2026	S&P 100	Deletion	Target	TGT	Consumer Staples
Mar 23, 2026	S&P 500	Addition	Vertiv Holdings	VRT	Industrials
Mar 23, 2026	S&P 500	Addition	Lumentum Holdings	LITE	Information Technology
Mar 23, 2026	S&P 500	Addition	Coherent	COHR	Information Technology
Mar 23, 2026	S&P 500	Addition	EchoStar	SATS	Communication Services
Mar 23, 2026	S&P 500	Deletion	Match Group	MTCH	Communication Services
Mar 23, 2026	S&P 500	Deletion	Molina Healthcare	MOH	Health Care
Mar 23, 2026	S&P 500	Deletion	Lamb Weston Holdings	LW	Consumer Staples
Mar 23, 2026	S&P 500	Deletion	Paycom Software	PAYC	Industrials
Mar 23, 2026	S&P MidCap 400	Addition	Solstice Advanced Materials	SOLS	Materials
Mar 23, 2026	S&P MidCap 400	Addition	SiTime	SITM	Information Technology
Mar 23, 2026	S&P MidCap 400	Addition	Moog	MOG.A	Industrials
Mar 23, 2026	S&P MidCap 400	Addition	InterDigital	IDCC	Information Technology
Mar 23, 2026	S&P MidCap 400	Addition	Vicor	VICR	Industrials
Mar 23, 2026	S&P MidCap 400	Addition	CareTrust REIT	CTRE	Real Estate
Mar 23, 2026	S&P MidCap 400	Deletion	Lumentum Holdings	LITE	Information Technology
Mar 23, 2026	S&P MidCap 400	Deletion	Coherent	COHR	Information Technology
Mar 23, 2026	S&P MidCap 400	Deletion	EchoStar	SATS	Communication Services
Mar 23, 2026	S&P MidCap 400	Deletion	ZoomInfo Technologies	GTM	Communication Services
Mar 23, 2026	S&P MidCap 400	Deletion	ASGN	ASGN	Information Technology
Mar 23, 2026	S&P MidCap 400	Deletion	Kemper	KMPR	Financials
Mar 23, 2026	S&P SmallCap 600	Addition	Match Group	MTCH	Communication Services
Mar 23, 2026	S&P SmallCap 600	Addition	Molina Healthcare	MOH	Health Care
Mar 23, 2026	S&P SmallCap 600	Addition	Lamb Weston Holdings	LW	Consumer Staples
Mar 23, 2026	S&P SmallCap 600	Addition	Paycom Software	PAYC	Industrials
Mar 23, 2026	S&P SmallCap 600	Addition	VSE	VSEC	Industrials
Mar 23, 2026	S&P SmallCap 600	Addition	Argan	AGX	Industrials
Mar 23, 2026	S&P SmallCap 600	Addition	Rithm Capital	RITM	Financials
Mar 23, 2026	S&P SmallCap 600	Addition	Lyft	LYFT	Industrials
Mar 23, 2026	S&P SmallCap 600	Addition	Laureate Education	LAUR	Consumer Discretionary
Mar 23, 2026	S&P SmallCap 600	Addition	Life Time Group Holdings	LTH	Consumer Discretionary
Mar 23, 2026	S&P SmallCap 600	Addition	Life360	LIF	Information Technology
Mar 23, 2026	S&P SmallCap 600	Addition	Sphere Entertainment	SPHR	Communication Services
Mar 23, 2026	S&P SmallCap 600	Addition	ZoomInfo Technologies	GTM	Communication Services
Mar 23, 2026	S&P SmallCap 600	Addition	ASGN	ASGN	Information Technology
Mar 23, 2026	S&P SmallCap 600	Addition	Kemper	KMPR	Financials
Mar 23, 2026	S&P SmallCap 600	Deletion	Solstice Advanced Materials	SOLS	Materials
Mar 23, 2026	S&P SmallCap 600	Deletion	SiTime	SITM	Information Technology
Mar 23, 2026	S&P SmallCap 600	Deletion	Moog	MOG.A	Industrials
Mar 23, 2026	S&P SmallCap 600	Deletion	InterDigital	IDCC	Information Technology
Mar 23, 2026	S&P SmallCap 600	Deletion	Vicor Corp	VICR	Industrials
Mar 23, 2026	S&P SmallCap 600	Deletion	CareTrust REIT	CTRE	Real Estate
Mar 23, 2026	S&P SmallCap 600	Deletion	Dave & Buster's Entertainment	PLAY	Consumer Discretionary
Mar 23, 2026	S&P SmallCap 600	Deletion	SunCoke Energy	SXC	Materials
Mar 23, 2026	S&P SmallCap 600	Deletion	AH Realty Trust	AHRT	Real Estate
Mar 23, 2026	S&P SmallCap 600	Deletion	Summit Hotel Properties	INN	Real Estate
Mar 23, 2026	S&P SmallCap 600	Deletion	KKR Real Estate Finance Trust	KREF	Financials
Mar 23, 2026	S&P SmallCap 600	Deletion	Bloomin' Brands	BLMN	Consumer Discretionary
Mar 23, 2026	S&P SmallCap 600	Deletion	Myriad Genetics	MYGN	Health Care
Mar 23, 2026	S&P SmallCap 600	Deletion	Cars.com	CARS	Communication Services
Mar 23, 2026	S&P SmallCap 600	Deletion	ANGI	ANGI	Communication Services

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/vertiv-holdings-lumentum-holdings-coherent-and-echostar-set-to-join-sp-500-others-to-join-sp-100-sp-midcap-400-and-sp-smallcap-600-302707297.html

SOURCE S&P Dow Jones Indices

FAQ

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

Which companies are joining the S&P 500 on Mar 23, 2026 (symbol LW mentioned)?

The S&P 500 additions on Mar 23, 2026 are Vertiv (VRT), Lumentum (LITE), Coherent (COHR), and EchoStar (SATS). According to S&P DJI, these changes take effect before the market opens on Mar 23, 2026 as part of the quarterly rebalance.

What happens to Lamb Weston (LW) in the S&P reconstitution on Mar 23, 2026?

Lamb Weston (LW) will be deleted from the S&P 500 and added to the S&P SmallCap 600 effective Mar 23, 2026. According to S&P DJI, the move reflects that LW is no longer representative of the S&P 500 market-cap range.

How will the Mar 13, 2026 change affect NAPCO Security Technologies (NSSC)?

NAPCO Security Technologies (NSSC) will be added to the S&P SmallCap 600 effective prior to trading on Mar 13, 2026. According to S&P DJI, NSSC replaces Alexander & Baldwin, which is being acquired and is expected to be removed.

Which S&P 100 companies are being removed and added on Mar 23, 2026?

On Mar 23, 2026, S&P 100 additions include Micron (MU), Lam Research (LRCX), Applied Materials (AMAT), and GE Vernova (GEV); deletions include PayPal (PYPL), AIG (AIG), MetLife (MET), and Target (TGT). According to S&P DJI, changes align index membership with market-cap ranges.

Will these index changes affect index-tracking funds and ETFs for LW and others?

Yes. Index-tracking funds and ETFs that replicate the S&P 500 or SmallCap 600 will rebalance holdings to reflect these Mar 13 and Mar 23 changes. According to S&P DJI, funds typically adjust before market open on the effective dates to match index membership.