--- url: 'https://qubit.capital/blog/us-series-b-plus-weekly-funding-roundup-mar-10-17-2026' title: 'US Series B+ Weekly Funding Roundup (Mar 10-17, 2026): $1.86B Raised Across 10 Deals' author: name: Sagar Agrawal url: 'https://qubit.capital/blog/author/sagar' date: '2026-03-17T16:47:53+05:30' modified: '2026-03-17T18:02:13+05:30' type: post summary: 'US Series B+ funding roundup for Mar 10-17, 2026. $1.86B raised across 10 deals including Nexthop AI ($500M), Quince ($500M), Shine Technologies ($240M), and Sunday ($165M).' categories: - Weekly Funding Roundup image: 'https://qubit.capital/wp-content/uploads/2026/03/Us-Seed-funding-weekly-roundup-march-week-3.webp' published: true --- # US Series B+ Weekly Funding Roundup (Mar 10-17, 2026): $1.86B Raised Across 10 Deals US late-stage venture capital roared back this week with $1.86 billion deployed across 10 Series B+ rounds. Two deals tied for the largest raise at $500 million each, Nexthop AI in AI networking infrastructure and Quince in direct-to-consumer e-commerce, signaling investor appetite for both frontier technology and proven consumer models at scale. The week’s dealflow reveals a clear pattern: deep tech and AI infrastructure are commanding the biggest checks. Four of the ten deals target foundational technology layers, networking, fusion energy, satellite communications, and robotics — while AI-native software platforms continue to attract nine-figure rounds. Notably, three deals crossed the $100 million mark in sectors where AI agents are replacing entire professional workflows, from accounting to automation. Weekly Funding Roundup MAR 10-17, 2026 $1.9B TOTAL RAISED 10DEALS CLOSED MixedSTAGE $186MAVG DEAL SIZE USTOP REGION BY STAGE Series B+$1.3B72% Series B$517M28% BY SECTOR Nexthop AIAI Infrastructure$500M QuinceE-Commerce$500M Shine TechnologiesDeep Tech / Fusion$240M SundayDeep Tech / Robotics$165M BasisAI / Fintech$100M AalyriaDeep Tech / Space$100M VitureDeep Tech / Consumer Electronics$100M JuiceboxAI$80M GumloopAI / Automation$50M RenoFiFintech$22M Table of Contents - [1. Nexthop AI Raises $500M for AI Networking Infrastructure](#1-nexthop-ai-raises-$500m-for-ai-networking-infrastructure) [Deal Overview](#deal-overview) - [Investor Profile](#investor-profile) - [Company and Leadership](#company-and-leadership) - [Problem and Opportunity](#problem-and-opportunity) - [Product and Technology](#product-and-technology) - [Use of Proceeds and Vision](#use-of-proceeds-and-vision) - [Market Context](#market-context) - [2. Quince Raises $500M for Direct-to-Consumer E-Commerce](#2-quince-raises-$500m-for-direct-to-consumer-e-commerce) [Deal Overview](#deal-overview-1) - [Investor Profile](#investor-profile-1) - [Company and Leadership](#company-and-leadership-1) - [Problem and Opportunity](#problem-and-opportunity-1) - [Product and Technology](#product-and-technology-1) - [Use of Proceeds and Vision](#use-of-proceeds-and-vision-1) - [Market Context](#market-context-1) - [3. Shine Technologies Raises $240M for Fusion Technology Commercialization](#3-shine-technologies-raises-$240m-for-fusion-technology-commercialization) [Deal Overview](#deal-overview-2) - [Investor Profile](#investor-profile-2) - [Company and Leadership](#company-and-leadership-2) - [Problem and Opportunity](#problem-and-opportunity-2) - [Product and Technology](#product-and-technology-2) - [Use of Proceeds and Vision](#use-of-proceeds-and-vision-2) - [Market Context](#market-context-2) - [4. Sunday Raises $165M for Household Robot](#4-sunday-raises-$165m-for-household-robot) [Deal Overview](#deal-overview-3) - [Investor Profile](#investor-profile-3) - [Company and Leadership](#company-and-leadership-3) - [Problem and Opportunity](#problem-and-opportunity-3) - [Product and Technology](#product-and-technology-3) - [Use of Proceeds and Vision](#use-of-proceeds-and-vision-3) - [Market Context](#market-context-3) - [5. Basis Raises $100M for AI Accounting Agents](#5-basis-raises-$100m-for-ai-accounting-agents) [Deal Overview](#deal-overview-4) - [Investor Profile](#investor-profile-4) - [Company and Leadership](#company-and-leadership-4) - [Problem and Opportunity](#problem-and-opportunity-4) - [Product and Technology](#product-and-technology-4) - [Use of Proceeds and Vision](#use-of-proceeds-and-vision-4) - [Market Context](#market-context-4) - [6. Aalyria Raises $100M for Satellite Communications Software](#6-aalyria-raises-$100m-for-satellite-communications-software) [Deal Overview](#deal-overview-5) - [Investor Profile](#investor-profile-5) - [Company and Leadership](#company-and-leadership-5) - [Problem and Opportunity](#problem-and-opportunity-5) - [Product and Technology](#product-and-technology-5) - [Use of Proceeds and Vision](#use-of-proceeds-and-vision-5) - [Market Context](#market-context-5) - [7. Viture Raises $100M for XR Smart Glasses](#7-viture-raises-$100m-for-xr-smart-glasses) [Deal Overview](#deal-overview-6) - [Investor Profile](#investor-profile-6) - [Company and Leadership](#company-and-leadership-6) - [Problem and Opportunity](#problem-and-opportunity-6) - [Product and Technology](#product-and-technology-6) - [Use of Proceeds and Vision](#use-of-proceeds-and-vision-6) - [Market Context](#market-context-6) - [8. Juicebox Raises $80M Series B for AI Platform](#8-juicebox-raises-$80m-series-b-for-ai-platform) [Deal Overview](#deal-overview-7) - [Investor Profile](#investor-profile-7) - [Company and Leadership](#company-and-leadership-7) - [Product and Technology](#product-and-technology-7) - [Use of Proceeds and Vision](#use-of-proceeds-and-vision-7) - [Market Context](#market-context-7) - [9. Gumloop Raises $50M Series B for AI Automation](#9-gumloop-raises-$50m-series-b-for-ai-automation) [Deal Overview](#deal-overview-8) - [Investor Profile](#investor-profile-8) - [Company and Leadership](#company-and-leadership-8) - [Product and Technology](#product-and-technology-8) - [Use of Proceeds and Vision](#use-of-proceeds-and-vision-8) - [Market Context](#market-context-8) - [10. RenoFi Closes $22M Series B for Home Renovation Lending](#10-renofi-closes-$22m-series-b-for-home-renovation-lending) [Deal Overview](#deal-overview-9) - [Investor Profile](#investor-profile-9) - [Company and Leadership](#company-and-leadership-9) - [Problem and Opportunity](#problem-and-opportunity-7) - [Product and Technology](#product-and-technology-9) - [Use of Proceeds and Vision](#use-of-proceeds-and-vision-9) - [Market Context](#market-context-9) - [Lessons For Founders](#lessons-for-founders) ## 1. Nexthop AI Raises $500M for AI Networking Infrastructure ### Deal Overview - **Stage:** Series B+ - **Sector:** AI Infrastructure - **Geography:** United States - **Round Size:** $500M - **Valuation:** $4.2B ### Investor Profile Lightspeed led the round alongside Andreessen Horowitz, Altimeter, Kleiner Perkins, WestBridge, Battery, and Emergent. This syndicate represents a who’s-who of enterprise infrastructure investors — firms that collectively backed Arista, Nutanix, and Snowflake at scale. Their combined conviction at a $4.2 billion valuation underscores how seriously the market takes AI-specific networking. ### Company and Leadership [Nexthop AI](https://nexthop.ai) was founded in 2024 by Anshul Sadana, who spent 17 years as COO of Arista Networks where he pioneered the leaf-spine architecture that powers most modern cloud data centers. Sadana’s rolodex spans every major hyperscaler, and he is now applying that institutional knowledge to the AI workload era. ### Problem and Opportunity AI training clusters require fundamentally different networking than traditional cloud workloads. Current data center networks were designed for east-west traffic patterns, not the all-to-all GPU communication that large model training demands. As AI clusters scale to tens of thousands of GPUs, networking has become the primary bottleneck — not compute. ### Product and Technology Nexthop builds AI-optimized networking hardware and software for hyperscalers and NeoClouds. The platform uses a SONiC-based Disaggregated Spine Architecture designed specifically for GPU cluster communication patterns. Their JDM (joint design manufacturing) model creates deep switching costs with customers. ### Use of Proceeds and Vision The company plans to expand its product line with new switch hardware, scale engineering and go-to-market teams, and deepen hyperscaler relationships. Sadana has described the opportunity as building what Arista was for cloud, but for AI workloads — a market he sizes at $100 billion or more. ### Market Context The AI networking market is projected to reach $100 billion by 2031. Nexthop competes with Arista, Cisco, and Broadcom, but its AI-native architecture and founder pedigree give it a differentiated position in a market where incumbents are retrofitting legacy products. ## 2. Quince Raises $500M for Direct-to-Consumer E-Commerce ### Deal Overview - **Stage:** Series B+ - **Sector:** E-Commerce - **Geography:** United States - **Round Size:** $500M ### Investor Profile The round’s investors were not publicly disclosed, but the sheer size — $500 million — places this among the largest e-commerce raises of the year and signals institutional-grade confidence in the company’s unit economics and growth trajectory. ### Company and Leadership [Quince](https://www.onequince.com) has built a direct-to-consumer platform that offers luxury-quality products at significantly lower price points by cutting out traditional retail intermediaries. The company has carved a niche among value-conscious consumers who refuse to compromise on quality. ### Problem and Opportunity Traditional retail markup structures mean consumers pay 5-8x manufacturing cost for premium goods. Quince eliminates wholesale, retail, and brand marketing layers to deliver comparable quality at a fraction of the price — a compelling proposition as inflation-weary consumers seek smarter spending. ### Product and Technology The platform sources directly from the same factories that supply luxury brands, passing savings to consumers. Categories span apparel, home goods, and accessories, with a supply chain optimized for quality control and direct shipping. ### Use of Proceeds and Vision At $500 million, Quince has significant capital to expand product categories, invest in supply chain infrastructure, and scale customer acquisition. The company is positioning itself as the default destination for quality-conscious, value-driven shoppers. ### Market Context The US e-commerce market exceeds $1 trillion annually. Quince competes in the premium-value segment against brands like Everlane and Italic, but its aggressive pricing and broad catalog differentiate it in a crowded DTC landscape. ## 3. Shine Technologies Raises $240M for Fusion Technology Commercialization ### Deal Overview - **Stage:** Series B+ - **Sector:** Deep Tech / Fusion - **Geography:** United States (Janesville, WI) - **Round Size:** $240M - **Total Raised:** >$1B ### Investor Profile NantWorks led alongside Fidelity, Sumitomo, Pelican Energy, Deerfield, and Oaktree. The mix of strategic industrials (Sumitomo), healthcare-focused investors (Deerfield), and energy specialists (Pelican) reflects Shine’s multi-vertical commercialization strategy. Fidelity’s participation adds public-market credibility to a company approaching commercial scale. ### Company and Leadership [Shine Technologies](https://www.shinefusion.com) was founded in 2010 as a spinout from Phoenix Nuclear Labs. CEO Greg Piefer holds a PhD in Nuclear Engineering and has spent over 15 years advancing fusion neutron technology from laboratory to commercial deployment. The company stands out as the only fusion company generating meaningful revenue. ### Problem and Opportunity Lutetium-177 (Lu-177) is a critical radiopharmaceutical isotope used in targeted cancer therapies, and global supply cannot keep pace with demand. Meanwhile, nuclear waste from legacy reactors remains a trillion-dollar unsolved problem. Shine’s fusion neutron technology addresses both. ### Product and Technology Shine produces 50 trillion neutrons per second using fusion technology — a technically unmatched capability. Its four-phase strategy starts with medical isotopes, where its Ilumira facility already produces 100,000 Lu-177 doses annually across 19 countries. Subsequent phases target nuclear waste recycling and eventually fusion energy generation. ### Use of Proceeds and Vision Funds will scale Lu-177 production toward 200,000 doses per year and advance a nuclear waste recycling pilot. Shine positions itself as the commercialization bridge to the fusion age — monetizing fusion neutrons today while the industry works toward net-energy fusion. ### Market Context The radiopharmaceutical market is projected to exceed $10 billion by 2030, with Lu-177 in acute global shortage. Shine’s nuclear regulatory moat and operational revenue set it apart from the dozens of fusion startups that remain pre-revenue. ## 4. Sunday Raises $165M for Household Robot ### Deal Overview - **Stage:** Series B - **Sector:** Deep Tech / Robotics - **Geography:** United States (Mountain View, CA) - **Round Size:** $165M - **Valuation:** $1.15B ### Investor Profile Coatue and Tiger Global co-led with participation from Benchmark, Bain Capital Ventures, Fidelity, and Conviction. Benchmark’s involvement is notable — the firm rarely backs hardware companies, signaling extraordinary conviction in Sunday’s approach to the data flywheel problem that has stalled previous household robotics attempts. ### Company and Leadership [Sunday](https://www.sundayrobotics.com) was co-founded by Tony Zhao (CEO) and Cheng Chi (CTO), both Stanford PhDs. Zhao created the ALOHA, UMI, and diffusion policy frameworks that form the citation backbone of modern robot learning research. The company has grown to over 70 engineers. ### Problem and Opportunity US households spend roughly $700 billion annually on domestic chores, yet no robot has successfully automated general household tasks. Previous attempts failed because training data collection was prohibitively expensive — requiring $20,000+ teleoperation rigs that could not scale. ### Product and Technology Sunday’s Memo is a non-humanoid household robot trained on 10 million real household episodes. The breakthrough is their $200 Skill Capture Glove, which replaces expensive teleoperation hardware and enables 100x cheaper data collection. This gives Sunday the largest in-home robot training dataset in existence. ### Use of Proceeds and Vision The company plans to triple engineering, quadruple research, and increase data collection fivefold ahead of a beta launch targeted for Thanksgiving 2026. Sunday aims to be the first company to deploy a household robot at consumer scale. ### Market Context The physical AI race is intensifying with competitors like Physical Intelligence, Figure AI, and 1X Technologies raising billions. Sunday differentiates by targeting homes rather than warehouses, and by solving the data bottleneck that has historically limited household robotics. ## 5. Basis Raises $100M for AI Accounting Agents ### Deal Overview - **Stage:** Series B - **Sector:** AI / Fintech - **Geography:** United States (New York, NY) - **Round Size:** $100M - **Total Raised:** ~$138M ### Investor Profile Accel led with GV (Google Ventures), Khosla Ventures, and Better Tomorrow Ventures. The angel list reads like a tech hall of fame: Jeff Dean (Google), Jeff Wilke (ex-Amazon Consumer CEO), Kyle Vogt (Cruise), Noam Brown (OpenAI), Larry Summers, and Nat Friedman (ex-GitHub CEO). This caliber of individual backing in an enterprise AI company is rare. ### Company and Leadership [Basis](https://www.basis.so) was founded in 2023 and has already reached unicorn status. The company has achieved roughly 30% penetration among the top 25 US accounting firms — a remarkable adoption rate for a two-year-old startup in a conservative industry. ### Problem and Opportunity The US has over 1.5 million accounting professionals facing chronic understaffing. Firms cannot hire fast enough to meet demand, and junior accountants spend most of their time on repetitive tasks that are prime candidates for AI automation. ### Product and Technology Basis is the leading AI agent for accounting, capable of autonomously preparing tax returns, performing audit testing, and generating workpapers. The platform completed the first autonomous 1065 partnership return — a milestone that demonstrated AI can handle complex, multi-step tax workflows. Every deployment trains on firm-specific processes, creating compounding data advantages. ### Use of Proceeds and Vision Basis will expand its platform capabilities and scale sales to the top 150 US accounting firms. The vision is to become the agent-native replacement for the entire accountant’s technology stack. ### Market Context AI agents are rapidly moving from copilot to autonomous modes across professional services. Basis benefits from a structural labor shortage that makes AI adoption a necessity rather than an option for accounting firms. ## 6. Aalyria Raises $100M for Satellite Communications Software ### Deal Overview - **Stage:** Series B - **Sector:** Deep Tech / Space - **Geography:** United States - **Round Size:** $100M - **Valuation:** $1.3B ### Investor Profile Battery Ventures led alongside J2 Ventures, Accel, and Housatonic. J2 Ventures specializes in defense and national security technology, reflecting Aalyria’s dual-use commercial and defense positioning. Battery and Accel bring deep enterprise software expertise to a company building the orchestration layer for space communications. ### Company and Leadership [Aalyria](https://www.aalyria.com) spun out of Alphabet/Google in 2022, inheriting a decade of R&D from Google’s Project Loon and related initiatives. The company carries forward intellectual property that Google invested hundreds of millions of dollars developing. ### Problem and Opportunity As satellite constellations from SpaceX, Amazon, and others proliferate, no vendor-neutral software layer exists to orchestrate communications across them. The space communications market needs an interoperability standard — and Aalyria is building it. ### Product and Technology Aalyria offers two core products: Spacetime, a satellite network orchestration platform, and Tightbeam, an atmospheric laser communications system. Together, they enable seamless communication across satellite constellations, ground stations, and aircraft — regardless of hardware vendor. ### Use of Proceeds and Vision The company will accelerate development of both Spacetime and Tightbeam while growing headcount by one-third. Aalyria positions itself as the communications backbone of the New Space Age. ### Market Context Starlink’s success has validated satellite internet and is driving demand for multi-constellation interoperability. Aalyria’s vendor-neutral positioning and defense relationships give it a unique strategic advantage in a rapidly expanding market. ## 7. Viture Raises $100M for XR Smart Glasses ### Deal Overview - **Stage:** Series B+ - **Sector:** Deep Tech / Consumer Electronics - **Geography:** United States (San Francisco / Beijing) - **Round Size:** $100M - **Total Raised:** $222M ### Investor Profile Legend Capital led with Bertelsmann, Singtel Innov8, BlueRun, and BAI Capital. The syndicate blends Asian and Western investors with deep consumer hardware experience, reflecting Viture’s dual-market strategy across the US and Asia. ### Company and Leadership [Viture](https://www.viture.com) was founded in 2021 by David Jiang, a former Google Glass engineer. The company has already claimed the number one position in US XR glasses sales according to IDC — a remarkable achievement given competition from Apple, Meta, and Xreal. ### Problem and Opportunity Consumers want the immersive experience of large screens in a portable format, but existing solutions are either too bulky (VR headsets), too expensive (Apple Vision Pro), or too limited (phone screens). Viture targets the sweet spot: lightweight, high-quality personal displays at accessible prices. ### Product and Technology The Viture Pro features micro-OLED displays at 1,000 nits brightness, 120Hz refresh rate, and a virtual 135-inch screen equivalent — all in a package weighing roughly 78 grams. The company has built an integrated hardware-software ecosystem around its glasses. ### Use of Proceeds and Vision Viture will invest in next-generation products and global market expansion. The company’s consumer-first approach positions it as the personal screen replacement for entertainment, productivity, and gaming. ### Market Context The XR glasses market is heating up with Apple Vision Pro, Meta Ray-Ban, and Xreal all competing. Viture’s IDC-leading sales position and Google Glass engineering heritage give it credibility in a market that has historically struggled with consumer adoption. ## 8. Juicebox Raises $80M Series B for AI Platform ### Deal Overview - **Stage:** Series B - **Sector:** AI - **Geography:** United States - **Round Size:** $80M ### Investor Profile DST Global led the round solo. DST is known for making concentrated, high-conviction bets on category-defining companies, its portfolio includes Facebook, Twitter, Airbnb, and Stripe. A single-investor $80 million round from DST signals strong confidence in Juicebox’s trajectory. ### Company and Leadership [Juicebox](https://www.juicebox.ai) is building an AI platform that has attracted one of the most selective growth investors in global venture capital. The company has maintained a relatively low profile while scaling its technology. ### Product and Technology Juicebox operates in the AI platform space, developing tools that leverage large language models for enterprise applications. DST Global’s backing suggests the company has found meaningful product-market fit and demonstrated strong growth metrics. ### Use of Proceeds and Vision The $80 million raise will fund platform expansion and scaling efforts as the company moves from early traction to growth phase. ### Market Context The enterprise AI platform market continues to attract significant capital as companies seek to deploy AI agents and automation across business workflows. ## 9. Gumloop Raises $50M Series B for AI Automation ### Deal Overview - **Stage:** Series B - **Sector:** AI / Automation - **Geography:** United States - **Round Size:** $50M ### Investor Profile Benchmark led the round. Benchmark is famously selective — the firm manages a small fund, takes one board seat per partner, and backs only a handful of companies per year. Past bets include Uber, Snapchat, and eBay. Their lead in Gumloop’s Series B is a strong endorsement of the company’s position in AI automation. ### Company and Leadership [Gumloop](https://www.gumloop.com) is building an AI automation platform that simplifies how businesses build and deploy AI-powered workflows. The company has grown quickly enough to attract Benchmark’s attention at the Series B stage. ### Product and Technology Gumloop’s platform enables users to create AI-driven automation workflows without deep technical expertise. The tool bridges the gap between powerful AI models and practical business process automation. ### Use of Proceeds and Vision The $50 million will accelerate product development and market expansion as Gumloop scales its automation platform across enterprise customers. ### Market Context AI automation is one of the fastest-growing enterprise software categories, with companies racing to reduce manual workflow overhead. Gumloop competes in a space alongside Zapier AI, Make, and a growing number of AI-native workflow tools. ## 10. RenoFi Closes $22M Series B for Home Renovation Lending ### Deal Overview - **Stage:** Series B - **Sector:** Fintech - **Geography:** United States - **Round Size:** $22M ### Investor Profile Fifth Wall led with participation from Progressive Insurance. Fifth Wall is the largest venture firm focused on real estate technology, and Progressive’s involvement signals the insurance industry’s interest in renovation financing as a risk-mitigation tool, better-maintained homes mean fewer claims. ### Company and Leadership [RenoFi](https://www.renofi.com) has built a lending platform specifically designed for home renovation financing. The company addresses a gap in traditional lending where homeowners struggle to borrow against the future value of planned improvements. ### Problem and Opportunity Homeowners planning renovations face a financing paradox: they need capital to increase their home’s value, but traditional lenders only underwrite based on current value. This forces many homeowners into high-interest personal loans or credit cards for renovation projects. ### Product and Technology RenoFi’s platform enables homeowners to borrow against the after-renovation value of their property, unlocking significantly more borrowing power at lower rates. The platform partners with credit unions and community banks to originate these loans. ### Use of Proceeds and Vision The funding will expand RenoFi’s lending partner network and product capabilities as the company scales a new category in home finance. ### Market Context The US home renovation market exceeds $400 billion annually, with homeowners increasingly choosing to renovate rather than move in a high-interest-rate environment. RenoFi is carving a niche in renovation-specific lending that traditional banks have largely ignored. ## Lessons For Founders - **Founder-market fit commands premium valuations.** Nexthop AI’s $4.2B valuation and Basis’s unicorn status both trace directly to founders with decades of domain authority. Sadana built the networking architecture hyperscalers already use; Basis’s angel list includes the architects of Google, Amazon, and GitHub. Investors are paying for institutional knowledge that cannot be replicated. - **Solve the data bottleneck, not just the product.** Sunday’s $200 Skill Capture Glove versus $20K+ alternatives is the real innovation, not the robot itself. Similarly, Basis compounds value by training on each firm’s workflows. The companies commanding nine-figure rounds have found ways to collect proprietary data 10-100x cheaper than competitors. - **Revenue changes the conversation in deep tech.** Shine Technologies has raised over $1 billion because it is the only fusion company with meaningful revenue, 100,000 isotope doses across 19 countries. In capital-intensive sectors, finding near-term revenue while pursuing long-term vision separates fundable companies from science projects. - **Single-investor rounds signal extreme conviction.** Both Juicebox (DST Global, $80M) and Gumloop (Benchmark, $50M) raised from a single elite firm. When one investor takes an entire round, it often means the company’s metrics are strong enough that they did not need, or want, to share the allocation. - **Structural shortages create durable tailwinds.** Basis targets 1.5M understaffed accountants. Shine addresses Lu-177 isotope shortages. RenoFi fills a lending gap banks ignore. The most fundable companies this week are not creating demand, they are meeting urgent, quantifiable supply deficits.