Tenstorrent Holdings closed a $1.5 billion Series E on October 19, 2026, at a $6.2 billion post-money valuation — more than double its prior mark. The round, led by Trace Capital and Innovation X, drew participation from Fidelity Management & Research Company, Morgan Stanley, ARK Invest, T. Rowe ...
"We built one architecture and sell it at every size. The future of compute is open, scalable, and owned by the people building on it." — Jim Keller, CEO, Tenstorrent
Tenstorrent Holdings closed a $1.5 billion Series E on October 19, 2026, at a $6.2 billion post-money valuation — more than double its prior mark. The round, led by Trace Capital and Innovation X, drew participation from Fidelity Management & Research Company, Morgan Stanley, ARK Invest, T. Rowe Price, and Tether Investments, among others. Tether's inclusion marks the stablecoin issuer's latest deployment in a venture portfolio that now spans more than 120 companies and exceeds $20 billion in committed capital.
The deal sits at the intersection of two capital flows: Wall Street's rush into RISC-V-based AI silicon alternatives to Nvidia, and Tether's systematic conversion of stablecoin profits into hard-asset infrastructure positions. Tether reported $10.5 billion in net profit for 2025 and $1.04 billion in Q1 2026 alone. That cash is no longer sitting idle in Treasury bills. It is being routed into AI chips, GPU data centers, media platforms, and brain-computer interface companies at a pace that makes Tether one of the most active — and least conventional — institutional investors in the technology sector.
The $1.5 billion Series E was led by Trace Capital and Innovation X. The full investor roster includes Agostinelli Group, ARK Invest, Cadence Ventures, Eclipse, Fidelity Management & Research Company, Maverick Silicon, Morgan Stanley, Protagonist, SanDisk, T. Rowe Price, Tether Investments, Troluce Capital, Virtu Financial, and XTX Markets.
The round more than doubled Tenstorrent's valuation from its prior funding. Both Intel and Qualcomm had separately explored acquisition bids for Tenstorrent at valuations between $8 billion and $10 billion, according to earlier reporting by Tom's Hardware. The Series E appears to have preempted those approaches, at least for now.
Tenstorrent will deploy proceeds to scale its Galaxy server line, serve open-weight large language models and video generation workloads, and expand its business licensing AI and CPU intellectual property to chip designers.
"Jim and his team bring decades of hands-on silicon, software, and IP experience, and we're excited to partner with Tenstorrent as Galaxy continues to scale," said Ben Mahdavi, Founder at Trace Capital.
Tenstorrent, headquartered in Santa Clara, is led by CEO Jim Keller, who previously designed Apple's A4 and A5 processors, AMD's Zen architecture, and Tesla's Full Self-Driving chip. The company builds AI processors and systems based on RISC-V, an open-source chip instruction set that eliminates the licensing fees charged by Arm Holdings.
The company's Galaxy servers compete directly with Nvidia's DGX systems for AI inference workloads. By June 2026, 1,000 Galaxy servers had been manufactured and at least half sold, with 10 customers operating them on-premises, according to reporting by GPU.net. The largest single order totaled 96 servers — 3,072 chips. Deployments span Equinix facilities in the United States, Japan's ai& sovereign AI inference clusters, and multiple supercluster installations in India, including one at Turiyam AI.
On the IP licensing front, Samsung and LG license Tenstorrent's TT-Ascalon RISC-V CPU and Tensix AI cores. Japan's Leading-edge Semiconductor Technology Center (LSTC), a government-backed entity partnered with Rapidus on 2nm manufacturing, selected Tenstorrent's RISC-V and chiplet designs for an AI accelerator project.
George Bousis, Co-Founder and Managing Partner at Protagonist, noted: "Few companies design the chip and the software that runs on it. Tenstorrent does both, and its video generation results beat industry benchmarks ahead of our expectations."
Revenue, unit shipments, and detailed customer counts remain undisclosed. Much of Tenstorrent's 2026 product roadmap has not yet shipped to customers, and IP licensing revenue depends on customer chip production ramps — an inherently delayed revenue cycle.
Tether's participation in the Tenstorrent round is one data point in a broader pattern. The stablecoin issuer has assembled a venture portfolio exceeding $20 billion across more than 120 companies, according to PANews reporting from 2026. The portfolio spans artificial intelligence, energy, media, fintech, agriculture, digital assets, peer-to-peer communications, and brain-computer interfaces.
The capital source is straightforward. Tether earned $13.7 billion in net profit in 2024 and $10.5 billion in 2025. Q1 2026 added another $1.04 billion. Q2 2026 generated $1.5 billion in net operating profit. Total assets stood at $191.77 billion as of March 31, 2026, with excess reserves of $8.23 billion above liabilities.
The engine is USDT's reserve portfolio. Direct U.S. Treasury bill holdings totaled $114.9 billion, or 61.2% of total assets, as of Q2 2026. Including overnight and term reverse repos, total direct and indirect Treasury exposure reached approximately $140.6 billion — ranking Tether as the 17th-largest holder of U.S. Treasuries globally.
The company planned to invest $2.5 billion to $3 billion in 2025 across five sectors. Disclosed large-ticket deployments include:
| Investment | Amount | Date | |---|---|---| | Rumble (video platform) | $775 million | December 2024 | | Northern Data (data centers) | $610 million credit facility | 2023 | | Tenstorrent (AI chips) | Undisclosed (part of $1.5B round) | October 2026 | | AIsa (AI agent payments) | Undisclosed | October 2026 | | Rumble-Northern Data merger support | $150 million GPU commitment | 2025 |
Tether holds a 54% stake in Northern Data and approximately 30% of Rumble as of April 2026. The Rumble-Northern Data merger, announced in November 2025, will consolidate data center assets and GPU server fleets under Rumble.
The shift in Tether's capital allocation reflects a structural calculation. USDT reserves generate income primarily from Treasury bill yields. With the Federal Reserve's benchmark rate having been cut from its 2023-2024 highs, the yield on short-dated Treasuries has compressed, squeezing the spread that funds Tether's operations.
Tether's 2025 profits fell 23% from 2024's $13.7 billion to approximately $10.5 billion — a decline consistent with lower rates applied to a growing but rate-sensitive reserve base. Deploying excess reserves into equity positions with higher expected returns — AI infrastructure, semiconductor IP, data centers — represents a diversification away from interest-rate dependence.
The Tenstorrent investment specifically targets the AI inference hardware market, where demand from enterprises running large language models and video generation workloads continues to outstrip GPU supply. Tether CEO Paolo Ardoino has publicly stated that AI infrastructure spending by major technology companies is unsustainable, noting that margins are shrinking while profits remain delayed. Tenstorrent's open-source RISC-V approach positions it as a lower-cost alternative to Nvidia's proprietary ecosystem — a thesis consistent with Ardoino's stated preference for decentralized, non-proprietary infrastructure.
The Tenstorrent investment is one node in a multi-layered AI infrastructure strategy. On October 15, 2026, Tether invested in AIsa, a platform enabling AI agents to pay for data, software, and compute via a unified interface, billed in fiat or stablecoins. AIsa reported hosting more than 250,000 agents that had processed over 100 million cumulative transactions, with a 150x increase in agent users and a 200x increase in API calls between February and June 2026.
Tether also operates its own AI initiative, Tether AI, which includes the QVAC system — a platform Ardoino has described as enabling decentralized AI inference without dependence on centralized data centers. The company has stated plans to bring lightweight AI tools to emerging markets, focusing on systems that can run on smartphones rather than frontier-scale models.
The combined portfolio — Tenstorrent (chips), Northern Data and the Rumble merger (data centers and GPUs), AIsa (AI agent payment rails), and Tether AI (decentralized inference) — constructs a vertical stack from silicon to settlement. Whether this stack generates coherent returns or represents opportunistic capital deployment without operational integration is an open question. Tether does not publish audited financial statements; its reserves are attested by BDO Italia, not audited by a Big Four firm.
Tether's investment activity occurs against the backdrop of its own valuation debate. In September 2025, the company explored raising $15 billion to $20 billion at a $500 billion valuation. By February 2026, the Financial Times reported that advisers had reduced the target to approximately $5 billion after prospective backers questioned both the deal size and whether a stablecoin issuer without a completed audit merited such a figure. In April 2026, Tether set a 14-day deadline for investors to commit to the round.
At $500 billion, Tether would rank among the most valuable private companies globally, exceeding the market capitalizations of JPMorgan Chase and Goldman Sachs. Whether its growing venture portfolio — profitable but illiquid, diversified but unaudited — supports or complicates that narrative remains contested among institutional allocators.
The Tenstorrent position, alongside Fidelity, Morgan Stanley, and T. Rowe Price, places Tether's investment arm in the same syndicate as some of the world's largest asset managers. That co-investment dynamic may serve a signaling function beyond the financial return: demonstrating that Tether's capital is accepted alongside regulated institutional money in competitive private-market processes.
Tether's participation in Tenstorrent's $1.5 billion Series E crystallizes a structural shift: the world's largest stablecoin issuer is now deploying capital alongside major asset managers in competitive private-market rounds far removed from cryptocurrency. The Tenstorrent position adds AI semiconductor exposure to a portfolio already spanning GPU data centers, AI agent payment infrastructure, and decentralized inference systems.
The economic logic is legible. Tether earns billions annually from Treasury bill yields on USDT reserves. As rate compression narrows that income stream, redeploying excess reserves into higher-return equity positions — particularly in AI infrastructure where demand exceeds supply — represents rational capital allocation. The risk is equally legible: a $20 billion venture portfolio managed by a company that has never completed a Big Four audit, concentrated in illiquid positions across sectors where Tether has no established operational track record.
The market will ultimately evaluate Tether on whether its investment arm generates returns that justify the capital diversion from reserves, or whether the growing portfolio introduces complexity that complicates the issuer's primary obligation: maintaining the dollar peg on $186 billion in outstanding USDT.