Vertiv, Lumentum & More: New S&P 500 Stocks to Watch

Vertiv, Lumentum & More: New S&P 500 Stocks to Watch

March 7, 2026 David Kessler - News Editor News

S&P 500 Gains Four New Members: Vertiv, Lumentum, Coherent, and EchoStar

The S&P 500 index is set to expand with the addition of four companies – Vertiv, Lumentum, Coherent, and EchoStar – reflecting shifts in the market landscape and the growing importance of sectors like data centers and technology. The changes, announced this week, will take effect before the open of trading on March 20, 2026, according to reports from Reuters and Barron’s. This expansion signals investor confidence in these companies and their potential for continued growth within the broader market.

What’s Driving the Change?

The addition of these four companies isn’t a random event. It’s part of the S&P 500’s regular rebalancing process, designed to ensure the index accurately reflects the U.S. Economy. S&P Dow Jones Indices, the firm responsible for maintaining the index, periodically reviews its constituents to assess their eligibility based on factors like market capitalization, liquidity, and representativeness of their respective industries. The inclusion of Vertiv and Lumentum, in particular, highlights the increasing significance of the data center and technology sectors, fueled by the ongoing demand for cloud computing, artificial intelligence, and high-speed connectivity.

A Closer Look at the New Entrants

Each of the four companies brings a unique profile to the S&P 500. Here’s a brief overview:

  • Vertiv: A global provider of critical digital infrastructure technologies, Vertiv focuses on power, cooling, and IT management solutions for data centers, communication networks, and commercial and industrial facilities. Their role in supporting the physical infrastructure of the digital world makes them a key player in the ongoing data boom.
  • Lumentum: Lumentum designs, manufactures, and sells optical, photonic, and thermoelectric products. These components are essential for a wide range of applications, including optical communications, lasers, and advanced sensing. The company’s technology is critical for enabling faster and more efficient data transmission.
  • Coherent: Coherent is a leading provider of lasers, laser-based systems, and related technologies. Their products serve diverse markets, including industrial, scientific, and medical applications. The company’s innovations in laser technology are driving advancements in various fields.
  • EchoStar: EchoStar is a provider of satellite communication services, primarily through its DISH Network and EchoStar satellite television businesses. While traditionally known for satellite TV, EchoStar is also expanding into broadband services and other connectivity solutions.

How the S&P 500 Inclusion Process Works

The S&P 500 isn’t simply a list of the 500 largest companies in the U.S. It’s a carefully constructed index designed to represent the broad U.S. Equity market. The process of adding or removing companies is overseen by a committee at S&P Dow Jones Indices. This committee considers a range of factors, including a company’s market capitalization (typically exceeding $14.5 billion), liquidity (ease of buying and selling shares), and sector representation. The goal is to maintain an index that is both representative and investable. You can find more details about the S&P 500 methodology on the S&P Dow Jones Indices website.

What Does This Mean for Investors?

The inclusion of these companies in the S&P 500 has several implications for investors. First, it will likely lead to increased demand for their shares as index funds and exchange-traded funds (ETFs) that track the S&P 500 are required to purchase the newly added stocks. This increased demand can drive up share prices, at least in the short term. Second, inclusion in the S&P 500 can enhance a company’s visibility and credibility, potentially attracting more institutional investors. Finally, it can lower a company’s cost of capital, making it easier to raise funds for future growth. But, it’s important to remember that index inclusion is not a guarantee of future success. Investors should always conduct their own due diligence before making any investment decisions.

Confirmed vs. Unclear Details

While the announcement of these additions is confirmed by multiple sources, including Reuters and Barron’s, the specific impact on individual stock prices remains to be seen. Details regarding any potential reshuffling within the index to accommodate these new additions were not provided in the initial reports. The exact weighting of each new company within the S&P 500 will also be determined closer to the effective date of March 20, 2026.

Looking Ahead: What Happens Next?

The next step is for S&P Dow Jones Indices to finalize the details of the index changes and communicate them to market participants. Index funds and ETFs will then begin adjusting their portfolios to reflect the new composition of the S&P 500. Investors should monitor these developments and consider their own investment strategies accordingly. The inclusion of Vertiv, Lumentum, Coherent, and EchoStar represents a dynamic shift in the S&P 500, reflecting the evolving landscape of the U.S. Economy and the growing importance of technology and data infrastructure. Further details about the rebalancing can be found on Investing.com.