NBIS vs WYFI: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. NBIS and WYFI share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined NBIS and WYFI exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

Nebius Group is an AI infrastructure company that builds and operates cloud platforms optimized for training and running artificial-intelligence models. It emerged from the international assets of the former Yandex business after Yandex's Russian operations were divested, and it relisted on Nasdaq as a standalone company headquartered in Amsterdam. Nebius's core business is an AI-focused cloud: it builds data centers packed with NVIDIA GPUs and rents that compute capacity to companies training large AI models, competing with the GPU-cloud and neocloud providers that have grown alongside the AI boom. The company designs its own server hardware and software stack to deliver high-performance, cost-efficient AI compute. Beyond the core cloud, Nebius holds several other technology businesses, including an autonomous-driving unit, an edtech platform, and a generative-AI data-labeling business, plus a stake in a data-center and other ventures. As a relatively young public company, Nebius is in a heavy-investment phase, spending aggressively on GPU capacity and data centers to capture AI-infrastructure demand, and is not yet consistently profitable.

Full NBIS guide

WhiteFiber, Inc. provides artificial-intelligence infrastructure through two segments: a cloud services business that leases out GPU supercomputing capacity (largely Nvidia hardware) to AI and machine-learning developers, and a colocation / data-center business that builds and operates high-performance computing sites. The company was carved out of bitcoin miner Bit Digital, which retains a majority equity stake and consolidates WhiteFiber's results; WYFI began trading on Nasdaq in August 2025. Its flagship project is the NC-1 site in North Carolina, anchored by a roughly $865 million, 10-year colocation agreement with Nscale, alongside GPU cloud contracts and a $160 million-plus five-year AI compute deal in France.

Full WYFI guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• NBIS drivers: AI compute demand tailwind; Vertically integrated, cost-efficient stack.
• WYFI drivers: NC-1 data-center ramp and contracted backlog; Capacity expansion toward ~76 MW.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: Nebius is an early-stage, capital-intensive business: building GPU data centers requires enormous upfront spending, and the company is not yet consistently profitable, with free cash flow deeply negative during the build-out. For WYFI, customer concentration is the standout risk: WhiteFiber has disclosed that its largest initial cloud customer accounted for roughly 70% of 2025 revenue and paused services pending renegotiation, so a single relationship can swing results dramatically.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick NBIS if you believe its drivers more; WYFI if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the NBIS and WYFI guides.

NBIS. Nebius trades as a speculative, high-growth AI-infrastructure stock valued on future capacity and revenue rather than current earnings. The valuation is highly sensitive to AI-compute demand, GPU access, and execution on data-center build-out. As a young company with negative free cash flow and a complex history, the stock carries large swings tied to AI-infrastructure sentiment and capacity announcements.

WYFI. As of July 2026 WYFI traded near $38-39 per share for a market cap around $1.5 billion, valuing the company at roughly 18 times trailing revenue despite ongoing net losses, a multiple that reflects backlog-driven growth expectations rather than current profits. The key figures to watch are the NC-1 revenue ramp expected to begin in 2026, the pace of capacity additions toward about 76 megawatts, and whether the paused largest-customer relationship is resolved. These estimates are approximate and drawn from public filings and market data; verify against the latest reported results.

Headline figures (approximate, early 2026): NBIS shows revenue (annualized run-rate) ~$1 billion+ and growing rapidly, off a small base, revenue growth Very high, multiple-fold year over year as capacity scales, profitability Not consistently profitable; heavy investment phase, free cash flow Deeply negative during GPU and data-center build-out; WYFI shows revenue (ttm) ~$83M, revenue growth (yoy) ~49%, q1 2026 revenue ~$21.9M (+31% YoY), net income (ttm) ~-$38M (loss).

NBIS and WYFI are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined NBIS and WYFI exposure against your real portfolio. It is not an investment adviser.