Robeco Institutional Asset Management Reduces LyondellBasell Stake

Institutional investor sells over 12,000 shares of the specialty chemicals company

Apr. 18, 2026 at 9:34am

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A high-contrast, black-and-white close-up image of heavy industrial machinery and equipment, conveying the scale and technical complexity of LyondellBasell's chemical production facilities.An extreme close-up of the intricate machinery and equipment that powers LyondellBasell's global chemical production operations.Houston Today

Robeco Institutional Asset Management B.V. has reduced its position in LyondellBasell Industries N.V. (NYSE: LYB) by 26% during the fourth quarter, according to a recent SEC filing. The firm sold 12,729 shares, leaving it with 36,174 shares worth $1.57 million in the specialty chemicals company.

Why it matters

LyondellBasell is a major global producer of polyolefins and advanced polymers, supplying raw materials to a wide range of industries. Institutional investors closely monitor the company's performance and ownership changes can signal shifts in market sentiment.

The details

Robeco Institutional Asset Management B.V. sold 12,729 shares of LyondellBasell Industries during the fourth quarter, reducing its total stake in the company to 36,174 shares. The firm cited unspecified portfolio adjustments as the reason for the sale. LyondellBasell's stock price has fluctuated in recent months, trading between a 52-week low of $41.58 and a high of $83.94.

  • Robeco sold the shares during the fourth quarter of 2025.
  • LyondellBasell's stock price ranged from a 52-week low of $41.58 to a high of $83.94 over the past year.

The players

Robeco Institutional Asset Management B.V.

A global asset management firm that has reduced its stake in LyondellBasell Industries.

LyondellBasell Industries N.V.

A major global producer of polyolefins and advanced polymers, headquartered in Houston, Texas.

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The takeaway

The reduction in Robeco's LyondellBasell holdings suggests a shift in market sentiment around the specialty chemicals company, though the specific reasons behind the portfolio adjustment remain unclear. Investors will likely continue to monitor LyondellBasell's performance and ownership changes among institutional investors.