Nvidia Rival Positron Closes $875M Series C at $5B to Ship Memory-First Asimov Inference Chip

Positron closed a two-tranche $875M Series C at a $5B post-money valuation, with a $375M tranche co-led by NEA, Atreides, Valor, Andra Capital and SemiAnalysis Capital, plus a Series C-1 of up to $500M anchored by Netscape co-founder Jim Clark. Its Asimov chip skips HBM in favor of 288GB-2,304GB of LPDDR5X per die, taping out on TSMC N3P at the end of 2026 for H2 2027 production. The follow-on Titan system links 4-8 Asimovs to serve 16T-parameter models with 10M-token context windows.