David Einhorn remains bullish on Graphic Packaging

What happened: David Einhorn, hedge fund manager at Greenlight Capital, maintains a bullish stance on Graphic Packaging (GPK). Despite GPK missing earnings expectations in Q1 2026, causing a stock slide, Einhorn kept his position in the company, which has been a consistent holding in his portfolio since Q2 2021. Meanwhile, Centene Corporation (CNC), another of Einhorn's picks, reported Q1 2026 results that exceeded expectations.

Market impact: Einhorn's bullishness on GPK, despite recent underperformance, signals confidence in the packaging sector's long-term growth prospects. This could influence investors' views on other packaging stocks. Conversely, CNC's strong results may boost investor sentiment towards managed care firms.

What to watch next: Upcoming catalysts include GPK's Q2 2026 earnings report (scheduled for late July) to see if the company can rebound and meet expectations. Additionally, investors should monitor Greenlight Capital's 13F filings (due in mid-August) for any changes in Einhorn's portfolio, which could provide further insights into his market outlook.