VC Funds Starting with O

Overlooked Ventures is a venture capital firm founded in 2021, based in Columbus, Ohio, and focused on investing in early-stage companies led by historically underrepresented founders, particularly women, people of color, and other overlooked communities. Their goal is to break down barriers and promote diversity within the tech and startup ecosystems by providing capital, mentorship, and support to promising entrepreneurs. The firm, led by founding partners Brandon Brooks and Janine Sickmeyer, prioritizes sectors like health tech, fintech, climate tech, and social impact startups. With check sizes ranging from $150,000 to $1 million, Overlooked Ventures invests primarily in pre-seed, seed, and Series A stages. Their portfolio includes companies such as CarpeDM, Lalo, and Blooming Health, reflecting their focus on innovation and inclusivity. Overlooked Ventures aims to address the gaps in funding for diverse founders, helping them access resources and support that historically have been unavailable to them​.

AngelList, a prominent platform for startup investments, has facilitated investments in over 2,698 startups through its innovative syndicate and fund structures. Some of its notable investments include companies like Brex, Postmates, Cruise, and PillPack, which have grown significantly in their respective industries. AngelList offers various investment opportunities, including traditional funds, syndicates, and rolling funds, allowing investors to back startups on a deal-by-deal basis. The platform has democratized early-stage investing by providing individual accredited investors access to high-quality investment opportunities, often in collaboration with top-tier venture capital firms. For instance, AngelList has supported the growth of companies like Notion, Iterable, and MoonPay, providing them with the necessary capital to scale. Their full-service fund management capabilities streamline the investment process, from fund formation to managing cap tables and tax preparation, making it easier for new and experienced investors alike to participate in venture capital.

Overton Venture Capital, based in New York, is a woman-led early-stage VC firm with a sharp focus on investing in seed and early-stage companies that are driving transformative changes in technology and consumer behavior. The fund is particularly interested in sectors like digital health, fintech, edtech, and consumer products. Some of their notable investments include K Health, Stash, and Bringg, which highlight their commitment to backing companies with strong technological underpinnings poised for significant market disruption. The fund’s investment strategy revolves around identifying and supporting diverse founding teams that not only demonstrate innovative product vision but also exhibit fiscal discipline and rapid growth potential. Overton VC is known for its hands-on approach, leveraging the deep operational expertise of its partners to actively support portfolio companies in scaling their businesses. The team is led by co-founders Kerry Miller and Michael Nogen, both seasoned professionals with extensive experience in management consulting, corporate strategy, and entrepreneurship. They emphasize a collaborative, transparent partnership with founders, aiming to build businesses with sustainable, long-term value. Startups seeking investment are encouraged to have a clear path to revenue and a strong, integrity-driven leadership team.

Overture is an early-stage venture capital firm dedicated to addressing the climate crisis by investing in groundbreaking climate tech startups. With a $60 million debut fund, Overture focuses on sectors like energy, transportation, carbon management, and climate adaptation. The firm targets Pre-Seed, Seed, and Series A companies, typically writing checks of around $1.5 million. They invest across North America and Europe, supporting founders who are developing technologies that promote decarbonization and sustainable practices. What sets Overture apart is its strategic alignment with government policies. Each portfolio company receives in-kind support from Boundary Stone Partners, a leading government affairs firm. This partnership helps startups navigate regulatory complexities and unlock government grants, loans, and other funding opportunities. Their portfolio includes innovative companies like Antora Energy, Crux, and Forum Mobility. Founded by a team of former U.S. Department of Energy and White House appointees, Overture leverages its deep expertise in both public policy and venture capital to accelerate climate solutions. The fund’s mission is to empower startups to scale by not only providing capital but also unlocking federal, state, and municipal resources to help them succeed.

Overwater Ventures is an early-stage venture capital firm based in San Francisco, founded and led by Kristina Simmons, a former partner at Andreessen Horowitz and Chief of Staff at Khosla Ventures. The firm focuses on investing in breakthrough technologies that positively impact human health and the planet. Overwater Ventures closed its $20 million debut fund in April 2023, with backing from institutional family offices, experienced founders, and prominent investors like Vinod Khosla. The fund primarily targets sectors such as digital health, biotech, AI, robotics, climate tech, and future food. Notable portfolio companies include Overstory, which reduces power outages and wildfires, and Conceive, a fertility technology firm. Overwater Ventures is committed to providing holistic support to its founders, addressing not just business needs like marketing and fundraising but also personal well-being, including mental health and stress management.

OVNI Capital is a Paris-based early-stage venture capital firm that specializes in backing tech-driven startups with global ambitions. Launched in 2022, OVNI primarily focuses on sectors such as fintech, cybersecurity, AI, climate tech, and food tech. They typically invest in French companies but are open to international expansion, supporting founders as they scale globally from day one. Notable investments include companies like FairMoney, Umiami, and OnOff, showcasing their commitment to transformative technologies. With a strategy centered around first-check investments, OVNI commits early, with typical check sizes ranging from €250K to €3M. The firm is also known to lead rounds and continue backing its portfolio through later stages. OVNI is driven by a highly operational approach, offering hands-on support through their network of operating partners who bring international market expertise. The team is led by General Partners Arnaud Laurent and Augustin Sayer, who emphasize the importance of early internationalization and differentiation through advanced technology. OVNI is actively shaping its portfolio to reflect the future of disruptive tech and stands out for its proactive, founder-friendly approach to venture capital.

OVO Fund, established in 2013 and headquartered in Palo Alto, California, specializes in early-stage venture capital investments, particularly in the pre-seed and seed stages. The firm focuses on backing "scary early-stage startups" with innovative ideas across various capital-efficient sectors. Their typical check size ranges from $250,000 to $500,000, with significant reserves for follow-on investments before the Series A stage. OVO Fund has a diverse portfolio of over 90 technology startups, including notable companies like Palantir, Wish, RelateIQ, Signifyd, Piazza, Addepar, and Juniper Square. Recent investments include companies such as Suma Wealth, a fintech company, and Clayful, an e-learning and wellness platform for children. The firm is led by experienced investors such as Eric Chen and Ilse Calderon, who provide strategic support to help their portfolio companies grow and succeed. OVO Fund is currently investing out of its second fund, which is valued at $35 million.

OVP Venture Partners (originally Olympic Venture Partners) was one of the Pacific Northwest's pioneer early-stage venture capital firms, founded in 1983 and headquartered in Kirkland, Washington, with an additional office in Portland, Oregon. Across nearly three decades of operation, OVP raised seven funds and managed more than $750 million in aggregate capital, led by Managing Directors Gerry Langeler, Chad Waite, and Bill Funcannon. The firm focused on information technology, software, digital media, communications, security, semiconductors, clean tech, and digital biology, with an emphasis on capital-efficient technology businesses in the western United States. OVP invested in approximately 102 companies across its history, generating 6 IPOs and 51 acquisitions. Early stakes in Qualcomm and Lam Research established the firm's track record. Later notable exits include NanoString Technologies (acquired by Bruker for $393 million in April 2024, OVP's most recent portfolio liquidity event), Cradlepoint, Fate Therapeutics, Aggregate Knowledge, Complete Genomics, Integrated Diagnostics, and RedSeal. The firm's seventh and final fund, OVP VII, was a $250 million 2006-vintage vehicle. In November 2012 OVP announced it would wind down and not raise an eighth fund, citing challenging fundraising conditions. OVP VII has since been liquidated. OVP Venture Partners is permanently closed to new investments. Its legacy portfolio has been fully managed to conclusion by the remaining partners, and the firm's track record stands as one of the most extensive in Pacific Northwest venture history, spanning four decades of technology investing and more than 50 successful exits across software, biotech, hardware, and communications.

Owl Ventures, founded in 2014 and based in Silicon Valley, is the largest venture capital firm dedicated to the education technology market, managing over $2 billion in assets. They specialize in investing across all stages from seed to late growth, focusing on transformative education companies. Notable investments include industry leaders like BYJU’s, MasterClass, Quizlet, and Newsela, which showcase their strategic emphasis on PreK-12, higher education, professional learning, and the intersection of EdTech with other sectors like FinTech and healthcare. Their investment strategy is hands-on, leveraging a global network of Limited Partners, distribution channels, and strategic partners to help portfolio companies scale effectively. Owl Ventures' approach includes support in talent acquisition, building syndicates, and navigating the education market's complexities. The firm is known for leading funding rounds and providing substantial check sizes, reflecting their active involvement in driving company growth and outcomes measurement. The team comprises experienced professionals like Managing Directors Ian Chiu, Tom Costin, Amit Patel, and Partner Malvika Bhagwat, each bringing deep domain expertise and a strong focus on education outcomes. Owl Ventures operates globally, with a strong presence in markets across North America, Europe, Asia, and Latin America, aiming to support innovative solutions that address the global skills gap and enhance educational accessibility and quality. Entrepreneurs seeking investment should note Owl Ventures’ preference for visionary leaders in EdTech, with an emphasis on scalable, impactful solutions. Approaching them with a clear demonstration of educational impact and market potential can significantly enhance partnership prospects.

Oxford Capital Partners, founded in 1999 and based in Oxford, UK, is a venture capital firm that focuses on investing in early-stage technology companies. The firm has invested approximately £500 million in over 100 businesses, emphasizing sectors such as fintech, digital health, artificial intelligence, and the future of retail. Their investment strategy leverages the UK's Enterprise Investment Scheme (EIS), providing tax advantages to investors and fostering innovation across the tech landscape. Oxford Capital seeks to back high-potential, disruptive technology with strong intellectual property or early signs of product-market fit. They typically aim to be the first institutional investor in these early-stage ventures, ranging from seed to Series A rounds. Their portfolio includes notable companies like Moneybox, Red Sift, and Attest. The firm prides itself on a hands-on approach, supporting founders with not only capital but also strategic guidance to help them achieve significant growth and scalability. The team, led by founder David Mott and including key members like Stephen Hampson and Chris Payne, brings a wealth of experience in venture capital and strategic investments. Oxford Capital's location in one of the world's leading knowledge clusters, Oxford, positions them advantageously to tap into cutting-edge innovations and support high-growth companies aiming to expand internationally.

Oxford Science Enterprises (OSE) is a venture capital firm deeply integrated with the University of Oxford, focusing on commercializing breakthrough scientific innovations. With a portfolio valued at over £2 billion, OSE invests in three core sectors: Life Sciences, Deep Tech, and Health Tech. It has partnered with over 200 leading academics from the university to build and support more than 80 high-impact companies. OSE’s strategy is to support early-stage ventures with long-term capital and hands-on expertise. Their investments span from biotechnology to quantum computing, with notable companies like Oxford Quantum Circuits, Ultromics, and Evox Therapeutics in the portfolio. OSE’s commitment to groundbreaking technologies is further emphasized by their mission to address global challenges such as health, food security, and sustainability. The firm is led by a distinguished team with deep ties to Oxford’s innovation ecosystem, including Jack Edmondson, the Chief Investment Officer, who has extensive experience managing large-scale investments at Oxford University Endowment Management. This alignment with Oxford enables OSE to identify and scale cutting-edge research into successful businesses. OSE’s model is designed to bridge the gap between academic discovery and market application, creating transformative companies that aim to improve human lives and drive future technological advancements.

Oxford Science Enterprises (OSE), previously known as Oxford Sciences Innovation, is a prominent investment company founded in 2015 with the mission to commercialize the cutting-edge research from the University of Oxford. OSE has raised over £850 million and invested around £775 million into over 45 core portfolio companies across three main sectors: Deep Tech, Life Sciences, and Health Tech. Notable investments include Vaccitech, the developer of the Oxford-AstraZeneca COVID-19 vaccine, Quantum Motion, and Beacon Therapeutics, which is advancing gene therapies for retinal diseases. OSE typically provides the first cheque to early-stage companies and supports them all the way to exit. Their strategy involves deep collaboration with Oxford University, leveraging the university's vast research capabilities to create transformative businesses. This partnership has resulted in over £1.4 billion in investment into university spinouts as of 2021, significantly increasing the scale and impact of Oxford's innovation ecosystem. The firm is committed to addressing some of the world's most significant challenges by supporting pioneering technologies and translating novel research into real-world applications. Their hands-on approach includes taking board seats and actively engaging with the founding teams to provide strategic guidance and operational support.

Oxford Technology is a venture capital firm that specializes in investing in early-stage technology-based businesses. They manage both SEIS (Seed Enterprise Investment Scheme) and EIS (Enterprise Investment Scheme) funds, providing up to £150k in seed funding for SEIS companies and up to £300k in follow-on funding for EIS companies. Their focus is on science, technology, and engineering startups, primarily within a 60-mile radius of Oxford to facilitate active involvement with the companies. Notable investments by Oxford Technology include OxWash, which is developing sustainable laundry solutions; Refeyn, pioneering mass photometry for single molecules; and HydRegen, creating bio-based manufacturing technologies. They have also invested in innovative companies like Neuroute, which aggregates data for clinical trial recruitment, and Covatic, enabling personalized content creation without the need for tracking IDs. Oxford Technology aims to maximize shareholder value by working closely with their portfolio companies to achieve successful exits and providing ongoing support. Their investment strategy not only leverages tax reliefs but also focuses on creating successful companies with significant long-term growth potential.

Oxx VC is a venture capital firm specializing in B2B SaaS investments, focusing on scale-up stage companies in Europe and Israel. Founded in 2017, Oxx operates from London and Stockholm, providing essential growth capital and strategic resources to help companies achieve explosive growth. Notable investments by Oxx include Peak, a SaaS company leveraging AI for decision intelligence; Funnel, which offers marketing data hub solutions; and Codility, a platform for technical hiring. These investments highlight Oxx's commitment to supporting innovative software companies that have achieved product-market fit and are ready to scale. Oxx recently closed its second fund at €172 million, backed by institutional investors such as British Patient Capital, Saminvest, KfW Capital, and Argentum. This fund will continue to support SaaS companies through growth stages, particularly those focusing on AI-driven innovations. The firm, led by co-founders Richard Anton and Mikael Johnsson, prides itself on a selective, evidence-based investment approach, providing tailored support to each portfolio company. Oxx's mission is to help build global category leaders in the SaaS sector by combining deep industry knowledge, a strong network, and hands-on partnership.

Oxy Capital is a Lisbon-based private equity firm with a strong focus on supporting small and medium-sized enterprises (SMEs) through tailored investment strategies. Since its founding in 2011, Oxy Capital has concentrated on restructuring, private equity, mezzanine debt, and special situations. With over 25 professionals across offices in Lisbon and Milan, the firm manages a variety of funds, including the Fundo de Reestruturação Empresarial and Oxy Capital Mezzanine Fund, which emphasize economic revitalization and sustainable growth. Oxy Capital specializes in creative financing solutions, particularly for businesses facing operational challenges or in need of restructuring. Its investment philosophy is driven by flexibility and boldness, enabling the firm to venture into under-explored markets and deliver high returns for investors. The firm’s portfolio spans industries like manufacturing, energy services, and commercial products, with a clear focus on fostering competitiveness in its portfolio companies. Led by Managing Partner Miguel Lucas, the team prides itself on its hands-on approach, working closely with businesses to enhance value while offering deep market insights. Oxy Capital’s dual presence in Portugal and Italy gives it a strong foothold in Southern Europe, making it a key player in revitalizing SMEs across the region.

Oyster Bay Venture Capital is a Hamburg-based early-stage venture capital firm founded in 2018 by Managing Partners Felix Leonhardt and Christoph Miller, who brings more than 25 years of senior food-industry experience. The firm is one of Europe's largest dedicated food-systems venture capital funds, operating under the thesis that the way we nourish ourselves defines our future. Oyster Bay invests sector-agnostically across the entire food value chain, from agtech and novel ingredients to consumer brands, manufacturing robotics, and food waste reduction, taking lead positions at seed and Series A with initial checks of EUR 1 million to EUR 5 million and a two-year follow-on commitment covering roughly the next two rounds. In November 2025 Oyster Bay closed its oversubscribed Fund II at over EUR 100 million, backed by the European Investment Fund and KfW, targeting approximately 20 portfolio investments. Fund I, which delivered reported net annual returns above 25 percent, backed early-stage companies including Oatly, air up, True Gum, La Vie, Dropz, Hooked, Peas of Heaven, and purefood. Early Fund II deployments include a lead $5.25 million Series A into Arda Biomaterials (with Green Angel Ventures and Clean Growth Fund), GoodBytz (kitchen robotics), Nukoko (alternative cocoa), and Seedalive (seed-testing technology). The firm has made 14 investments across its two funds. Oyster Bay operates with a 13-person team and brings together financial capital with a deep network of food-industry executives, retailers, and ingredient specialists. Its combination of market-specific expertise and EU institutional backing makes it a sought-after partner for founders disrupting food production, distribution, and consumption across Europe.

Oyster Ventures, founded in 2016 and headquartered in San Francisco, is a venture capital firm that targets early-stage investments in frontier technology companies. The firm aims to drive innovation by investing in startups that bring liquidity and efficiency to traditional industries, support globalization, and have significant scaling potential. Notable companies in their portfolio include Ridepanda, Rithmm, and Advance, reflecting their diverse investment interests in specialty retail, business productivity software, and financial software. Key exits like Postmates and Clearbit highlight their success. Led by Sophie Liao and Ran Wang, Oyster Ventures is known for its hands-on approach and strategic support, helping portfolio companies navigate the complexities of growth and scale. The firm is particularly interested in technologies that can disrupt and modernize outdated systems, making industries more efficient and globally accessible. Their investment strategy focuses on identifying and nurturing startups with the potential to become market leaders through innovative solutions and robust business models. This approach has positioned Oyster Ventures as a significant player in the venture capital landscape, dedicated to fostering technological advancements and supporting visionary entrepreneurs.

Ozmen Ventures is a Reno, Nevada-based early-stage venture capital fund founded in 2016 by Eren and Fatih Ozmen, the owners of Sierra Nevada Corporation (SNC), a global national-security contractor specializing in aircraft modification, space components and systems, cybersecurity, and eHealth with 5,000 employees across 40 offices. Kerem Ozmen serves as Principal and Managing Director, also a co-founder of 8090 Industries. Operating from the Innevation Center in downtown Reno, the fund was established to back innovative solutions to traditional problems in northern Nevada and beyond, with a deliberate goal of seeding a venture ecosystem in a state historically underserved by coastal capital. Sector focus spans aerospace, artificial intelligence, fintech, healthcare, advanced computing, and consumer internet, reflecting deep-tech adjacencies that align with the Ozmen family's SNC expertise. The firm has made approximately eight investments across seven portfolio companies. Notable portfolio names include FiscalNote, which listed on NASDAQ in December 2020 at a $219 million market cap and stands as Ozmen Ventures' only IPO exit to date, alongside Bloq, Luminous Computing, Self Lender, Covered, and ClickBio (laboratory consumables). Check sizes have ranged from seed through early Series A. Ozmen Ventures operates as a family-office vehicle with a concentrated, long-duration portfolio strategy. Its investment cadence is deliberately measured rather than high-frequency, reflecting a philosophy of making fewer, more deeply supported bets rather than diversifying broadly. The fund's strongest comparative advantage is its connection to SNC's national-security and space-technology customer base, which can provide portfolio companies with non-dilutive contracts and enterprise validation.