The global startup market has seen several large funding deals across artificial intelligence, biotech and software security. Three names that stand out are Arcee AI, BigHat Biosciences and OX Security. Together, these companies show how investors continue to put large sums into fields that can change the way companies build software, create medicines and protect digital systems.
Arcee AI has raised the largest amount among the three. The artificial intelligence company secured $150 million in a Series B round in September 2026. BigHat Biosciences followed with a $75 million Series C round on September 24, 2026. OX Security has a $60 million Series B, but that deal came earlier, on May 7, 2025.
The difference in dates is important. While all three deals are part of the wider funding picture, the OX Security round is not a new September 2026 deal. It is an older funding event that still stands out because of its size and the company’s work in software security.
Arcee AI Raises $150 Million
Arcee AI has secured $150 million in Series B funding, making it the largest deal among the three companies in this roundup. The company works in artificial intelligence and focuses on AI models for business use.
The size of the round shows the strong level of investor interest in AI firms that can offer tools for real business needs. Many companies now want AI systems that can work with their own data, follow specific business needs and provide useful results without the cost and limits of very large general models.
Arcee AI’s new capital gives the company more room to expand its technology and business. The September 2026 round included several major investors. These include Cambium Capital Partners, Emergence Capital, Vista Equity Partners, M12, Hitachi Ventures and Wipro Ventures, among others.
A group of investors of this size also gives a startup access to more than money. Such backers can provide business contacts, market access and support as a company moves into a larger stage of growth.
The $150 million figure also puts Arcee AI among the larger private AI deals in the current market. It reflects the amount of capital investors are ready to place behind companies that they believe can build useful AI products for business customers.
BigHat Biosciences Gets $75 Million
BigHat Biosciences has raised $75 million in Series C funding. The deal was announced on September 24, 2026, and was co-led by DFJ Growth and Premji Invest.
BigHat operates at the point where artificial intelligence meets biotechnology. Its technology uses AI to help with protein design. Proteins play a major role in the human body and are also important in the creation of many medicines.
The company plans to use the new money to support its AI-based protein design platform as well as its clinical pipeline. This gives the funding round a wider purpose than simple business expansion. The capital can help the company move its technology closer to real medical use.
One of its key programs, BHB810, has already reached Phase 1. This is an important stage in drug development because it marks the start of tests in people. A move into clinical work can require large amounts of capital, so a $75 million round can give a biotech company more financial support as it develops its programs.
The BigHat deal also shows the growing connection between AI and life sciences. AI can help researchers study complex biological problems at a speed that may be difficult through older methods alone. Companies in this area hope that better software and better biological data can help create new medicines and improve the drug discovery process.
OX Security Has a $60 Million Round
OX Security raised $60 million in a Series B round on May 7, 2025. DTCP led the deal. The round brought the company’s total funding to $94 million.
OX Security works in software security. Its technology helps companies look for security risks in their code and software development process. As more businesses depend on software, security has become a major concern for companies of all sizes.
The $60 million deal gave OX Security more capital for its next phase of growth. The company can use such funds to expand its technology, sales operations and reach among business customers.
There is one key point to note about this deal. OX Security’s $60 million Series B should not be treated as a September 2026 funding announcement. The round dates back to May 2025. It can still appear in a wider funding roundup because it is a major deal, but it is not part of the latest September 2026 funding activity.
Three Deals Across Three Fields
The three companies work in very different areas, yet their funding stories share a common theme. Investors are putting serious money into technology that can solve complex business and scientific problems.
Arcee AI works on artificial intelligence. BigHat Biosciences applies AI to protein design and medicine. OX Security focuses on software security. These are three fields where companies face difficult technical problems and where better tools can have a large effect.
The combined value of the three rounds is $285 million. However, only $225 million comes from the two September 2026 deals from Arcee AI and BigHat Biosciences. The remaining $60 million comes from OX Security’s May 2025 round.
This distinction helps give a clearer picture of the latest market activity. If the focus is only on the September 2026 deals, Arcee AI and BigHat account for $225 million in fresh capital. Their rounds also show that investors continue to support both AI software and AI-based biotechnology.
Why These Deals Matter
Large funding rounds can give young companies more time and resources to develop their products. They can hire more staff, improve their technology, enter new markets and support research.
For Arcee AI, the $150 million round comes at a time when businesses are looking for more practical AI tools. For BigHat, the $75 million deal can support work that connects AI with drug discovery and clinical research. For OX Security, the $60 million Series B provided capital for growth in the software security market.
The sectors also face different challenges. AI companies must build useful products while dealing with fast changes in technology. Biotech firms face long research timelines and strict clinical requirements. Security companies must keep pace with new software risks and an expanding digital world.
Large funding rounds do not guarantee success. A company still needs strong products, customers, research results and careful use of its capital. Yet major investment can give these businesses the resources they need to pursue their plans.
A Look at the Wider Funding Market
These deals offer a small view of where private capital continues to move. AI remains a major area of interest, but the money is not limited to general AI software. Investors are also backing AI applications in areas such as biotechnology and cybersecurity.
Arcee AI and BigHat Biosciences are especially notable because both use AI for specialised purposes. Their businesses show how artificial intelligence can move beyond simple consumer tools and into areas that need technical knowledge and specialised data.
OX Security adds another part of the picture. Software security remains essential as businesses rely more on digital systems. More software also means more places where security problems can appear, which creates demand for tools that can find and address such risks.
What the Three Rounds Show
The funding activity around Arcee AI, BigHat Biosciences and OX Security reflects the continued demand for advanced technology. Arcee AI’s $150 million Series B is the largest of the three deals. BigHat Biosciences follows with its $75 million Series C, while OX Security has its $60 million Series B from May 2025.
Together, the companies represent three important areas: artificial intelligence, biotechnology and software security. Their funding also shows that investors continue to back companies that aim to solve difficult problems with specialised technology.
The dates, however, should remain clear. Arcee AI and BigHat Biosciences are part of the September 2026 funding picture. OX Security’s $60 million Series B belongs to May 2025. Keeping that timeline clear gives a more accurate view of the market and helps separate fresh deals from major rounds from earlier periods.
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