Cramer Says Avoiding Stocks That Already Surged Is a Major Mistake, Points to Corning and Arm

Jim Cramer advised investors not to shun stocks simply because they have already logged strong gains, calling that mindset a major error during the market’s explosive run. The CNBC host argued that attention should shift from past price moves to a company’s future potential. Cramer cited Corning (GLW), which he bought for the CNBC Investing Club on October 21, 2025. Following a September 2025 facility visit, he became convinced by CEO Wendell Weeks’ case that fiber optics would increasingly replace copper in data centers. The stock had already climbed from about $52 in July to $77, yet it has since more than doubled, helped by Nvidia’s optical connectivity investments. He also highlighted Arm Holdings (ARM), which surged after unveiling its first in-house CPU on March 24, 2026. Cramer initiated a position on April 20, 2026, near $173 — well above the pre-launch $135 level — and the stock later broke above $300. He said the move into direct chip design strengthens Arm’s position as AI agents proliferate in data centers.