CBRS Stock Struggles To Hold IPO Momentum Even After Fast-Tracked S&P Indices Inclusion – NVDA Shadow Grows Larger

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Cerebras Systems shares slipped 1% in premarket trading on Tuesday, lagging gains in major chip stocks and extending their post-IPO decline. On Stocktwits, the retail sentiment for CBRS dropped to ‘bearish’ from ‘neutral’ the previous day.Cerebras, which develops giant AI chips designed to train and run AI models much faster than traditional GPUs, listed its stock on the Nasdaq Global Select Market on May 14 and 68% over its IPO price on the opening day. The listing was the biggest in 2026 so far.However, the tumbled 8.2% to $256.78 last week, although it remains above its IPO price of $185. The stock dropped despite news of the stock receiving a fast-tracked entry into the S&P Dow Jones Indices."Effective prior to the opening of trading on Monday, May 25, 2026, Cerebras Systems Inc (Exchange: XNAS; Ticker: CBRS) will be added to eligible indices after qualifying for Fast Track IPO Entry as per methodology rules," according to a notice by S&P Global.Retail’s View On CBRSSuch additions typically lift the stock, as they trigger automatic buying by institutional investors tracking those indices.That inverse move in CBRS triggered curiosity among retail investors. “$CBRS it’s gonna be a rockstar someday, but I would let a little chart development take place before I dove in. Wall Street loves eager beavers,” a trader . Another wrote: “news in joining S&P has no effect on CBRS. It’s not even joining the futures rally!”Alluding to the competitive pressure from the sector leader, Nvidia, a trader said, “Nvidia holds 86% of the AI data center revenue market and has more than 4 times the annual revenue of Cerebras.”The iShares Semiconductor ETF (SOXX) gained 3.7% last week and was up 2.5% in premarket on Tuesday.What Does Cerebras Do?Founded in 2015, Cerebras builds specialized AI chips and supercomputers designed to train and run large AI models faster than traditional GPU setups, along with software and cloud services to support them.It positions itself as a simpler, high-speed alternative to Nvidia by using a single massive chip rather than many smaller ones. Recently, it has been expanding into AI cloud services, opening new data centers, partnering with big tech firms, and securing large compute deals.Cerebras first filed for a public listing in September 2024, then withdrew its plan and raised $1.1 billion privately in October of that year.

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