Celsius Holdings (CELH) is trading lower as the market continues to react to Costco’s rollout of a cheaper Kirkland Signature sparkling energy drink, a product that appears directly comparable to Celsius on key attributes like caffeine and zero sugar. The launch has kept attention on potential private-label risk at a major retailer, extending the negative sentiment beyond the initial late-March pullback and weighing on the stock today. (edgen.tech)

Even if the Kirkland item is limited to Costco locations, the setup is what equity traders focus on: a large customer introducing a competing in-house alternative at a materially lower price point. That can raise questions about category pricing, promotional intensity, and velocity for branded cans at Costco, while also increasing uncertainty around forward demand as Celsius works through portfolio integration and margin normalization efforts in 2026. (edgen.tech)

Bears are leaning on the idea that private-label competition can pressure branded players faster than expected when a retailer can feature its own product and use aggressive pricing. Bulls counter that Celsius has a broader multi-channel footprint and distribution advantages through PepsiCo, and that recent analyst commentary has framed the Costco risk as potentially over-discounted versus its actual contribution to sales. (aol.com)

Near-term, traders will track whether additional large retailers follow Costco with similar private-label energy offerings and whether shelf placement or promotional activity changes for Celsius at Costco. Investors will also focus on evidence that integration-related timing issues are fading and that gross margin can recover toward management’s stated goal of a low-50% profile as 2026 progresses. (ir.celsiusholdingsinc.com)