Positron's $875M round lands under four months before Asimov's tapeout target

The tapeout target is close. Runtimewire dates the announcement to September 10th ^[2], seven months after Positron's February 2026 round ^[9]; from September 10 to the end of the year is 112 days ^[21]. The Economic Times reported that the proceeds will fund the final design stage of Asimov ^[7], which fits a schedule that tight. Positron says the round also covers the N3P tapeout itself and Titan's production ramp, plus a new engineering data center of more than 2 megawatts ^[3].

PitchBook put the February valuation at $1.06 billion ^[8], so the new mark is about 4.7 times that ^[27]. The first tranche, $375 million at $3.5 billion pre-money, puts the company at $3.875 billion post ^[6][22]. Reaching the stated $5 billion with a second tranche of $500 million implies a pre-money near $4.5 billion for the C-1 ^[23], a step-up of roughly $625 million between the two checks ^[33]. The Economic Times describes that tranche as up to $500 million, so the headline $875 million assumes it fills to its cap ^[6][26].

Qatar Investment Authority, Cisco Investments and Naver Ventures were among the additional investors ^[19]. The new directors are Forest Baskett of NEA, Gavin Baker of Atreides Management, Thomas Jermoluk of the Jim Clark Office and Dylan Patel, who founded SemiAnalysis ^[18].

Each Asimov chip is specified at between 288GB and 2,304GB of memory ^[10]. Eight chips at the top of that range is 18,432GB in one Titan node ^[24]. Divide that by 16 trillion parameters and you get about 1.15 bytes per parameter ^[25], and the key-value cache for a 10-million-token context has to come out of the same pool. The 16-trillion-parameter figure therefore describes the largest build, running weights at roughly a byte each.

Positron uses commodity LPDDR5X in place of high-bandwidth memory and advanced CoWoS packaging ^[13]. That keeps Positron clear of two of the tightest queues in the chain. Positron argues the approach delivers more usable memory capacity, lower power consumption and better inference economics without customers rebuilding data centers around unusually dense liquid-cooled racks ^[14]. For that to hold on a given serving workload, the workload has to be capacity-bound. Both write-ups leave out the per-chip bandwidth figure ^[32], and for a memory-bound decode step bandwidth is what sets tokens per second once the weights are resident.

Atlas is what a buyer can measure this year. Positron shipped its first Atlas customer server in August 2024, according to its own timeline ^[16], and names Cloudflare and Parasail as customers or evaluation partners ^[17]. Runtimewire writes that the $5 billion valuation rests on Asimov reaching silicon on schedule and proving its economics on real workloads ^[31].