CBRS Perp Doubles the $185 IPO Price on Cerebras Debut Day

Another Leg on Debut Day

The xyz:CBRS perp has run another 30.40% over the last three hours to $370.40, after Cerebras Systems rang the Nasdaq opening bell this morning on the back of last night's $185-per-share IPO pricing — $25 above the marketed range and well above the $115 to $125 the company first filed on May 4. Our prior coverage caught the contract at $350.70 around the open and at $387.20 mid-afternoon; the tape has since faded to $370.40 but is still printing roughly 2x the IPO mark. Twenty-four-hour perp volume has thickened to $105.66 million against the 5x leverage cap on the xyz:CBRS market, and the basis is leaning long into Cerebras' first close as a public company.

What $370 Implies

At $370.40 the perp is implying roughly $113 billion of equity value — about 100% above the $56.43 billion fully diluted valuation the deal printed at $185, and roughly 68% above the $221.03 secondary mark Hiive was quoting into the bell. That puts the contract well past every cluster on the Polymarket day-one closing market-cap market, where the $50–$60 billion bucket was the pre-open favorite. The perp is no longer trading the IPO price as a reference; it is pricing Cerebras as a $100 billion-plus AI infrastructure name on day one, broadly consistent with reporting that the book was roughly 20x oversubscribed and left a wall of unfilled demand to compete for stock in the secondary.

Why the Basis Is Still Wide

The simplest read on a perp trading at 2x the IPO print is that the underwriter mispriced the demand curve and the secondary market is doing the price discovery the deal couldn't. Cerebras walked into the listing carrying a reported $20 billion OpenAI compute commitment and an AWS partnership in the disclosure pack, and Bloomberg reported last-ditch acquisition approaches from Arm and SoftBank in the weeks before the deal — a takeover-bid optionality that doesn't fully evaporate just because the company chose the IPO route. The xyz:CBRS perp converts to an externally-priced contract once spot is live, so the basis from here is effectively a referendum on whether the Nasdaq tape can hold north of $300 into the close. If it does, the morning pop was a starting line; if it can't, the $370 print is the local high to fade.