Is CCMP a Buy? What to Consider in 2026

Last updated June 2026

Short answer

There is no universal answer to whether CCMP is a buy; it depends on your thesis, time horizon, and what you already own. Below is the case for CMC Materials (now Entegris), the main risks to weigh, where the stock trades, and a framework to decide for yourself. This is informational, not a recommendation, and Walnut is not an investment adviser.

CCMP Materials (formerly Cabot Microelectronics) was a specialty semiconductor materials company that produced chemical mechanical polishing (CMP) slurries, CMP pads, and specialty electronic chemistries used in semiconductor manufacturing. The company was acquired by Entegris (ENTG) in July 2022 for approximately $6.5 billion, integrating CCMP's CMP slurry and pad business into Entegris's broader semiconductor consumables platform. Following the acquisition, CCMP ceased trading as a public company. The CCMP business is now part of Entegris's portfolio, contributing CMP consumables to the combined Entegris specialty semiconductor materials offering. If the CCMP ticker appears in a current portfolio or basket, exposure to the underlying business is now available through Entegris (ticker ENTG). Historical CCMP shareholders received Entegris shares as part of the merger consideration.

The case for CMC Materials (now Entegris)

1. CCMP no longer trades as an independent company.

CCMP Materials was acquired by Entegris in July 2022 and is no longer listed. Any current exposure to the former CCMP CMP slurry and pad business is now through Entegris (ENTG).

2. CMP slurry and pad business continues within Entegris.

The former CCMP CMP slurry and pad business is now part of Entegris's specialty semiconductor materials portfolio. Demand for CMP consumables remains structurally strong as semiconductor process nodes advance and require more polishing steps.

3. AI-driven semiconductor capex tailwind.

Every AI accelerator chip is manufactured at fabs that use CMP consumables. AI-driven semiconductor capex drives consumables demand, which benefits the combined Entegris portfolio including the former CCMP products.

4. For investment exposure, see Entegris (ENTG).

Investors looking at the historical CCMP investment thesis should review Entegris (ENTG), which now houses the CCMP CMP consumables business as part of its broader specialty semiconductor materials platform.

The risks to weigh

Not applicable for CCMP directly (no longer trades). Risks applicable to the underlying CMP business are now Entegris risks. See ENTG for current investment risks.

Valuation context (as of early 2026)

Status: Acquired by Entegris in July 2022; no longer publicly traded
Successor ticker: ENTG (Entegris)
Acquisition price: Approximately $6.5 billion
Historical shareholders: Received Entegris shares as merger consideration
Current exposure: Available through Entegris (ENTG)

CCMP no longer has independent financial metrics. The former business contributes to Entegris consolidated financials. For current investment analysis, refer to Entegris (ENTG).

How to decide for yourself

Rather than asking whether CCMP is a buy in the abstract, it tends to help to answer four questions:

Thesis: do you believe the case above, and is it still true today?
Time horizon: a single stock can be volatile, so a longer horizon absorbs more of the swings.
Position sizing: a thesis can be right and the sizing still wrong; decide how much of your portfolio one name should be.
Overlap: check whether you already hold CCMP indirectly through an index or sector ETF before adding more.

For the full picture, see the CCMP stock guide (what the company does, the ETFs that hold it, similar stocks, and the themes it fits). In Walnut you can ask its AI about CCMP against your real portfolio and see your actual exposure before deciding.

Build a basket around CCMP with Walnut

Use CMC Materials (now Entegris) as one constituent in a thematic basket Walnut's AI helps you assemble. Describe a thesis you believe in, the AI proposes the holdings and weights, and you approve before any broker order.

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FAQ

Is CCMP a good stock to buy right now?

There is no universal answer. Whether CMC Materials (now Entegris) fits depends on your thesis, time horizon, risk tolerance, and what you already own. This page lays out the case for, the main risks, and where the stock trades, so you can decide for yourself. Walnut is not an investment adviser and this is not a recommendation.

What does CMC Materials (now Entegris) do?

Acquired by Entegris (ENTG) in July 2022. CMP slurry and pad business now part of Entegris.

What are the main risks of CCMP?

Not applicable for CCMP directly (no longer trades). Risks applicable to the underlying CMP business are now Entegris risks. See ENTG for current investment risks.

Does CCMP still trade?

No. CCMP Materials was acquired by Entegris (ENTG) in July 2022 and no longer trades as an independent public company. Historical CCMP shareholders received Entegris shares as merger consideration.

What was CCMP?

How can I get exposure to the former CCMP business?

Through Entegris (ENTG), which acquired CCMP in July 2022. The former CCMP CMP slurry and pad business is now part of Entegris's specialty semiconductor materials portfolio. Entegris trades on Nasdaq.

What was the CCMP acquisition price?

Approximately $6.5 billion. Entegris announced the acquisition of CCMP in December 2021 and completed the deal in July 2022. The transaction expanded Entegris's specialty semiconductor materials portfolio.

Walnut is informational and is not an investment adviser. This page is educational and not a recommendation to buy or sell CCMP; figures are approximate and dated, and your own situation, time horizon, and risk tolerance should drive any decision. Verify current data before investing.