Company
Reno, Nevada-based designer of AI inference hardware and software, building memory-first systems around commodity memory rather than high-bandwidth memory.
The $375m Series C priced Positron at $3.5bn before the money, and the up-to-$500m follow-on has to be sitting at $4.5bn pre-money to reach the $5bn headline, which only holds if every dollar of it is drawn.
Perspective Coverage
4 publishersReality
Sam Altman told Fortune that a listing now would be ill-advised while safety and alignment work is unfinished. More than $180 billion has gone into OpenAI, on Fortune's count, with no scheduled exit.
Reality
Positron says the money covers a TSMC N3P tapeout by the end of 2026, a new 2MW engineering data center and a production ramp in the second half of 2027. The larger of the round's two tranches is described as up to $500 million.
Reality
Enflame, which lost money last year, raised 6.12 billion yuan on Shanghai's STAR Market on September 11 and closed near triple its offer price, on retail demand reported at 6,109 times the shares available.
Reality
The $875 million round prices an inference chip whose performance figures come from cycle-accurate simulations and whose production date has moved from early 2027 into the second half. The system Positron ships today runs on HBM.
Reality
The Reno startup says its Asimov ASIC carries 288 GB of on-package LPDDR5X and realizes more than 90% of its memory bandwidth. Both figures come from the company, and no independent benchmark accompanies them.
Reality
Positron is now worth $5 billion on a design that swaps HBM for the memory that ships in phones, but Asimov has not taped out, mass production is set for the second half of 2027, and the 26x tokens-per-dollar figure comes from simulation.
Reality