Tenstorrent Doubles to $6.2B Private, but the $1.5B Round Costs ~6% of One Nvidia Buyback Quarter

NVIDIA Corp returned more capital than Tenstorrent just raised in roughly six weeks of its own fiscal third quarter. The board lifted the repurchase authorization by $150B to $235B on September 28, 2026, days after fiscal Q2 FY2027 reported $96.2B of revenue and $89.0B of data-center sales at a 75.0% gross margin — both records. Free cash flow over the just-closed fiscal 2026 came in at $96.7B per company filings, meaning the new $150B authorization is roughly 1.55x a full year of cash generation. Put differently, the entire Tenstorrent round costs about 1.5% of NVDA's uncovered buyback capacity, and Tenstorrent's new $6.2B post-money is ~0.12% of NVIDIA Corp's $5.28T equity capitalization.

Two of the Series E participants are operating vendors in the chip-design and memory stacks rather than pure financial investors, and that mix — Sandisk and Cadence Ventures on the cap table — is one of the stronger signals in this round. The Galaxy server depends on Taiwan Semiconductor Manufacturing, Samsung Electronics (the primary foundry partner since October 2023), Cadence Design Systems Inc EDA tools, and high-bandwidth memory. Putting the tooling and memory vendors directly on the shareholders' list tightens the loop between silicon, IP, and memory in the open-weight inference build.

Real Galaxy deployments have moved from press release to production over the past four months. Per company newsroom disclosures, ai& has rolled out more than 120 Galaxy systems for Japan's sovereign AI infrastructure, Hyundai Motor Group took an early stake and integrated Tenstorrent IP for vehicle compute, and LG Electronics Inc extended its RISC-V chiplet partnership in November 2024. On the financial side, Virtu Financial runs Galaxy servers on-premises for AI trading agents, and Equinix offers Galaxy through its Distributed AI Hub. Each individual deal is small next to a hyperscaler order, but the customer mix shows where open-weight inference is gaining budget at the edge of the AI build.

Cerebras' May 14, 2026 IPO priced at $185 per share, opened at $350, and briefly took the company past a $100B market cap before settling at a $27.8B capitalization in mid-October trading near $122 per share — a ~70% drawdown from peak. Cerebras Systems Inc has ~$680M of trailing revenue at a 34.8% gross margin and a -75% net margin, against an FY2026 core revenue forecast of $880–890M. The comparison to Tenstorrent is the closest in the public market: same business (open-weight / open-architecture AI compute), similar TAM positioning, vastly different listing status. Tenstorrent at $6.2B is the cheaper entry into the same trade — but only if it can file an S-1 and clear a 2027 listing window.

The cleanest read on this round is not 'Tenstorrent just proved the open-weight thesis' — it's that the open-weight thesis now has a defensible private market price. Buy-side money is voting with two distinct theses on the same news. The reflexive trade is NVIDIA Corp deploying $235B of authorized capital at a 27.1x TTM P/E and ~$97B of FY2027 free cash flow, a math problem NVIDIA Corp can run for years. The optionality trade is buying Cerebras Systems Inc at 4x peak, or pre-IPO exposure to Tenstorrent and watching for S-1 activity in the 2027 window, on the bet that open-weight inference — a TAM growing from $106B in 2025 to a projected $255B by 2030 — gets repriced.

Short-term (days to quarters), the catalysts that move the listed tape are not Tenstorrent's S-1 but the next two NVIDIA Corp earnings prints (Q3 FY27 in late November, Q4 FY27 in February), the cadence of Broadcom Inc's custom-ASIC orders with hyperscalers, and the Advanced Micro Devices Inc MI400 ramp. If open-weight inference budgets round-trip into the listed names — a Marvell Technology data-center beat, an Advanced Micro Devices Inc inference milestone — the trade pays before Tenstorrent ever files. Long-term (1–3 years), the question is whether Tenstorrent's $6.2B mark draws a sovereign or strategic acquirer above Cerebras Systems Inc' current capitalization, or whether the company makes it to listing intact. NVIDIA Corp's $235B buyback authorization runs through fiscal 2028; if it executes at scale, it compresses the multiple on every alternative regardless of revenue capture.