Truelink Sells Koch Filter to Atmus for $450 Million
Written by Emily J. Thompson, Senior Investment Analyst
Updated: Nov 24 2025
0mins
Should l Buy ATMU?
Source: Newsfilter
- Significant Transaction Value: Truelink Capital announced the sale of Koch Filter for $450 million in cash, marking a successful investment strategy and is expected to close in Q1 2026, further enabling ADTi's strategic focus.
- Market Leadership: As a leading provider of air filtration solutions, Koch Filter enhances Atmus's competitive position in diverse markets with its manufacturing bases across the U.S. and comprehensive product portfolio, ensuring continued growth in the industry.
- Commitment to Innovation: The acquisition by Atmus will provide Koch Filter with the resources and opportunities to support innovation in high-efficiency filtration solutions, which is expected to enhance customer value and market share.
- Strategic Restructuring: This transaction allows ADTi to concentrate on its core business units, driving efficiencies and growth, marking a new strategic direction for the company in terms of M&A and organic growth.
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Analyst Views on ATMU
Wall Street analysts forecast ATMU stock price to rise
5 Analyst Rating
4 Buy
1 Hold
0 Sell
Strong Buy
Current: 58.120
Low
54.00
Averages
60.00
High
64.00
Current: 58.120
Low
54.00
Averages
60.00
High
64.00
About ATMU
Atmus Filtration Technologies Inc. is engaged in filtration and media solutions. The Company designs and manufactures advanced filtration products, principally under the Fleetguard brand, that enable lower emissions and provide superior asset protection. It serves customers across the truck, bus, agriculture, construction, mining, marine and power generation vehicle, and equipment markets, along with providing comprehensive aftermarket support and solutions. Its products include fuel filters, lube filters, air filters, crankcase ventilation, hydraulic filters and coolants and other chemicals. It offers products for first fit and aftermarket applications to original equipment manufacturers, dealers/distributors, and end-users. The Company produces and sells Fleetguard branded products across North America, Europe, South America, Asia, Australia, and the African continents. Its Fleetguard branded products are available through distribution centers worldwide.
About the author
Emily J. Thompson
Emily J. Thompson, a Chartered Financial Analyst (CFA) with 12 years in investment research, graduated with honors from the Wharton School. Specializing in industrial and technology stocks, she provides in-depth analysis for Intellectia’s earnings and market brief reports.
Atmus Filtration to Replace Air Lease in S&P SmallCap 600
- Index Change: Atmus Filtration Technologies Inc. will replace Air Lease Corp. in the S&P SmallCap 600 effective April 9, 2026, marking a significant elevation in the company's status within the small-cap market, potentially attracting more investor attention.
- Acquisition Update: Sumitomo Corporation and Consortium are acquiring Air Lease Corp., with the deal expected to close soon, which may impact Air Lease's market performance and shareholder interests.
- Sector Impact: This change occurs within the industrial sector, and Atmus's inclusion could enhance the overall performance of the index, reflecting increased market confidence in industrial companies.
- Investor Focus: With Atmus's addition, investors may reassess their portfolios, particularly in the small-cap space, further driving liquidity and market recognition for the company’s stock.
See More
Atmus Filtration to Replace Air Lease in S&P SmallCap 600 Index
- Index Change: Atmus Filtration Technologies Inc. will replace Air Lease Corp. in the S&P SmallCap 600 effective April 9, 2026, indicating a significant recognition of the company in the small-cap market, which is likely to attract more investor attention.
- Acquisition Dynamics: Sumitomo Corporation and Consortium are acquiring Air Lease Corp., with the deal expected to close soon, potentially impacting Air Lease's market performance and investor confidence.
- Industry Impact: The addition of Atmus Filtration is set to enhance the industrial sector's performance within the S&P SmallCap 600 index, which may increase the overall attractiveness of the index and draw in more capital.
- Market Reaction: With Atmus Filtration's inclusion, market expectations regarding its future growth potential could drive its stock price up, thereby strengthening its position among investors.
See More
Bayberry Capital Fully Exits Atmus Filtration Technologies Stake
- Position Change: According to a February 17, 2026 SEC filing, Bayberry Capital sold its entire holding of 282,500 shares in Atmus Filtration Technologies during Q4 2025, resulting in a $12.74 million decrease in its position, indicating a strategic portfolio adjustment.
- Company Performance: Atmus reported $1.76 billion in sales for 2025, up from $1.67 billion in 2024, with net income reaching $207 million, demonstrating solid financial performance amid stable industrial demand.
- Market Performance: As of now, Atmus shares are priced at $56.72, reflecting a 51% increase over the past year, significantly outperforming the S&P 500's approximately 21% gain during the same period, indicating strong market confidence in its growth prospects.
- Investor Analysis: Bayberry's exit does not imply a negative outlook on Atmus's fundamentals but may reflect portfolio management considerations, as its largest holdings remain concentrated in companies like Lionsgate and Churchill Downs, showcasing a diversified investment strategy.
See More
Bayberry Capital Fully Exits Atmus Filtration Technologies Stake
- Shareholding Change: Bayberry Capital sold 282,500 shares of Atmus Filtration Technologies in Q4 2026, resulting in a $12.74 million decrease in its position value, fully exiting its investment in the company.
- Financial Performance: Despite Bayberry's exit, Atmus achieved $1.76 billion in sales for 2025, a 5.4% increase year-over-year, with net income of $207 million and adjusted EBITDA of $354 million, indicating stability in the industrial filtration market.
- Market Demand: Atmus's Fleetguard products cater to transportation, construction, agriculture, and power generation sectors, which, while not explosive in growth, generate consistent cash flows and strong replacement demand, suggesting robust fundamentals.
- Portfolio Adjustment: Bayberry's exit appears to be a strategic portfolio decision, as its largest holdings are concentrated in companies like Lionsgate Studios, Churchill Downs, and WESCO International, indicating a preference for other investment opportunities.
See More
Port Capital Increases Stake in Atmus Filtration Technologies
- Stake Increase: Port Capital LLC filed with the SEC on February 17, 2026, revealing an increase of 446,260 shares in Atmus Filtration Technologies, with an estimated transaction value of $21.60 million, reflecting confidence in the company's growth potential and investment strategy.
- Value Growth: The value of Atmus Filtration's position rose by $26.10 million at quarter-end, indicating a positive impact from both share purchases and price changes, which further solidifies Port Capital's investment stance in the company.
- Market Performance: As of March 9, 2026, Atmus Filtration shares were priced at $58.21, up 55.7% over the past year, with a one-year alpha of 36 percentage points compared to the S&P 500, showcasing its strong market performance.
- Strategic Acquisition: Atmus's recent $450 million acquisition of Koch Filter allows entry into the rapidly growing air filtration market, particularly in data centers and power generation, indicating the company's strategy to leverage AI trends for new growth opportunities and enhance its competitive edge.
See More
Port Capital Increases Stake in Atmus Filtration Technologies
- Increased Holdings: Port Capital LLC reported an increase of 446,260 shares in Atmus Filtration Technologies as of February 17, 2026, with an estimated transaction value of $21.60 million, reflecting confidence in the company's growth potential.
- Quarter-End Value Growth: As of December 31, 2025, the value of Port Capital's position in Atmus rose by $26.10 million, indicating the dual impact of trading activity and price movements, bringing its stake to 1.96% of reported assets under management.
- Strong Market Performance: As of March 9, 2026, Atmus Filtration's stock was priced at $58.21, representing a 55.7% increase over the past year, with a 36 percentage point alpha over the S&P 500, showcasing its robust performance in the heavy asset sector.
- Strategic Acquisition: Atmus, spun off from Cummins in 2023, acquired Koch Filter for $450 million, entering the rapidly growing air filtration market, particularly in data centers and power generation, thereby solidifying its market position and laying the groundwork for future growth.
See More
Atmus Filtration to Replace Air Lease in S&P SmallCap 600
- Index Change: Atmus Filtration Technologies Inc. will replace Air Lease Corp. in the S&P SmallCap 600 effective April 9, 2026, marking a significant elevation in the company's status within the small-cap market, potentially attracting more investor attention.
- Acquisition Update: Sumitomo Corporation and Consortium are acquiring Air Lease Corp., with the deal expected to close soon, which may impact Air Lease's market performance and shareholder interests.
- Sector Impact: This change occurs within the industrial sector, and Atmus's inclusion could enhance the overall performance of the index, reflecting increased market confidence in industrial companies.
- Investor Focus: With Atmus's addition, investors may reassess their portfolios, particularly in the small-cap space, further driving liquidity and market recognition for the company’s stock.
See More
Atmus Filtration to Replace Air Lease in S&P SmallCap 600 Index
- Index Change: Atmus Filtration Technologies Inc. will replace Air Lease Corp. in the S&P SmallCap 600 effective April 9, 2026, indicating a significant recognition of the company in the small-cap market, which is likely to attract more investor attention.
- Acquisition Dynamics: Sumitomo Corporation and Consortium are acquiring Air Lease Corp., with the deal expected to close soon, potentially impacting Air Lease's market performance and investor confidence.
- Industry Impact: The addition of Atmus Filtration is set to enhance the industrial sector's performance within the S&P SmallCap 600 index, which may increase the overall attractiveness of the index and draw in more capital.
- Market Reaction: With Atmus Filtration's inclusion, market expectations regarding its future growth potential could drive its stock price up, thereby strengthening its position among investors.
See More
Bayberry Capital Fully Exits Atmus Filtration Technologies Stake
- Position Change: According to a February 17, 2026 SEC filing, Bayberry Capital sold its entire holding of 282,500 shares in Atmus Filtration Technologies during Q4 2025, resulting in a $12.74 million decrease in its position, indicating a strategic portfolio adjustment.
- Company Performance: Atmus reported $1.76 billion in sales for 2025, up from $1.67 billion in 2024, with net income reaching $207 million, demonstrating solid financial performance amid stable industrial demand.
- Market Performance: As of now, Atmus shares are priced at $56.72, reflecting a 51% increase over the past year, significantly outperforming the S&P 500's approximately 21% gain during the same period, indicating strong market confidence in its growth prospects.
- Investor Analysis: Bayberry's exit does not imply a negative outlook on Atmus's fundamentals but may reflect portfolio management considerations, as its largest holdings remain concentrated in companies like Lionsgate and Churchill Downs, showcasing a diversified investment strategy.
See More
Bayberry Capital Fully Exits Atmus Filtration Technologies Stake
- Shareholding Change: Bayberry Capital sold 282,500 shares of Atmus Filtration Technologies in Q4 2026, resulting in a $12.74 million decrease in its position value, fully exiting its investment in the company.
- Financial Performance: Despite Bayberry's exit, Atmus achieved $1.76 billion in sales for 2025, a 5.4% increase year-over-year, with net income of $207 million and adjusted EBITDA of $354 million, indicating stability in the industrial filtration market.
- Market Demand: Atmus's Fleetguard products cater to transportation, construction, agriculture, and power generation sectors, which, while not explosive in growth, generate consistent cash flows and strong replacement demand, suggesting robust fundamentals.
- Portfolio Adjustment: Bayberry's exit appears to be a strategic portfolio decision, as its largest holdings are concentrated in companies like Lionsgate Studios, Churchill Downs, and WESCO International, indicating a preference for other investment opportunities.
See More
Port Capital Increases Stake in Atmus Filtration Technologies
- Stake Increase: Port Capital LLC filed with the SEC on February 17, 2026, revealing an increase of 446,260 shares in Atmus Filtration Technologies, with an estimated transaction value of $21.60 million, reflecting confidence in the company's growth potential and investment strategy.
- Value Growth: The value of Atmus Filtration's position rose by $26.10 million at quarter-end, indicating a positive impact from both share purchases and price changes, which further solidifies Port Capital's investment stance in the company.
- Market Performance: As of March 9, 2026, Atmus Filtration shares were priced at $58.21, up 55.7% over the past year, with a one-year alpha of 36 percentage points compared to the S&P 500, showcasing its strong market performance.
- Strategic Acquisition: Atmus's recent $450 million acquisition of Koch Filter allows entry into the rapidly growing air filtration market, particularly in data centers and power generation, indicating the company's strategy to leverage AI trends for new growth opportunities and enhance its competitive edge.
See More
Port Capital Increases Stake in Atmus Filtration Technologies
- Increased Holdings: Port Capital LLC reported an increase of 446,260 shares in Atmus Filtration Technologies as of February 17, 2026, with an estimated transaction value of $21.60 million, reflecting confidence in the company's growth potential.
- Quarter-End Value Growth: As of December 31, 2025, the value of Port Capital's position in Atmus rose by $26.10 million, indicating the dual impact of trading activity and price movements, bringing its stake to 1.96% of reported assets under management.
- Strong Market Performance: As of March 9, 2026, Atmus Filtration's stock was priced at $58.21, representing a 55.7% increase over the past year, with a 36 percentage point alpha over the S&P 500, showcasing its robust performance in the heavy asset sector.
- Strategic Acquisition: Atmus, spun off from Cummins in 2023, acquired Koch Filter for $450 million, entering the rapidly growing air filtration market, particularly in data centers and power generation, thereby solidifying its market position and laying the groundwork for future growth.
See More
