Cerebras Files $115–$125 IPO Range, CBRS Perp Cracks 32%

The Catalyst: A $115–$125 Range, Not $40B

The trigger is concrete and dated. On May 4 Cerebras filed its S-1 amendment setting a price range of $115 to $125 per share for a 28 million-share offering — a $3.5 billion raise that pegs the company at $26.6 billion at the top of the range. That number anchors the entire trade. Three days ago Bloomberg reported the company was targeting up to $4 billion at a $40 billion valuation, and the perp ran on that headline into the low-$300s before fading on Sunday tape. The actual filing came in roughly a third lighter than the rumored top mark. With Morgan Stanley, Citigroup, Barclays, and UBS leading the deal and the IPO expected to price on May 13, the rumored ceiling has been replaced with a hard, banker-set range — and the perp has spent the last 14 hours repricing into it.

Where $205 Sits Versus Forge, Hiive, and the Deal Tape

At $205.50 the contract is still ~64% above the high end of the $125 IPO range, ~81% above Forge's $113.50 secondary mark, and ~11% above Hiive's $184.87 listing. The basis to Forge has barely moved — that gap was already structural, since secondaries trade with transfer restrictions and discounts that don't apply to a public listing. The basis that actually compressed is the rumor basis: longs pricing in a $40B-deal first-day pop are now marking against a $26.6B-deal first-day pop, and the math doesn't tolerate the same premium. Even at $205.50 the contract still implies something like a 60%+ deal-day move on the high end of the range, which is rich on top of $10B+ in reported indications of interest but hardly a freebie. The skeptical case from the Motley Fool's Adam Levy — OpenAI customer concentration, the unfinished G42 unwind, TSMC wafer-scale yield risk — is still on the table, and now it has a real deal price to push against.

What's On the Clock Into May 13

The clock is now hard. Pricing is expected on May 13, which means the rumor-vs-tape window is roughly nine sessions long. xyz:CBRS is a trade.xyz HIP-3 perp with a $5M open-interest cap and 5x max leverage, and 24-hour volume on the contract is running at $4.8M. That is enough liquidity for directional traders to express a view but thin enough that one committed seller can move the print 10%+, which is part of what just happened. Once Cerebras opens on Nasdaq the contract converts to a standard externally-priced perp, marking against the actual share price rather than an internal index — at that point the basis closes by definition and the trade becomes a normal momentum book. Between now and then, the things that can actually move the contract are a price-range upsize, fresh syndicate color on book multiples, a major customer or partnership announcement, or a hard tape move in comparable AI names. Anything else is noise on a contract whose terminal value is now bracketed by $115 on the low end and whatever the first trade prints on the high end.