When it comes to startups and scaleups, there are few countries in the world that are as exciting and dynamic as the USA.
The USA is home to massive tech hubs like Silicon Valley, New York City, Austin, Boston and Seattle.
In fact, within the borders of America, some of the world’s most famous companies were born – growing into multi billion dollar enterprises.
What Are The Most Valuable Companies In The USA?
When it comes to looking at some of the most valuable companies in the USA, the top companies by market capitalisation according to Companies Market Cap include:
- Microsoft (Cap $3.3 trillion)
- Apple (Cap $3.1 trillion)
- NVIDIA (Cap $2.9 trillion)
- Amazon (Cap $2.2 trillion)
- Alphabet (Google) (Cap $1.9 trillion)
- Meta (Cap $1.5 trillion)
- Berkshire Hathaway (Cap $1.1 trillion)
Whilst many of these companies have been dominating for decades, it’s now time for a whole new generation of businesses to take over.
So, what are some of the top scaleups in the US?
Deel
Deel is a HR platform that allows companies to hire globally, automate payroll and compliance and manage their entire team in one platform.
As workplaces become more diverse and employ people from all over the world, Deel allows businesses to more easily comply with each country, helping them manage everything in one place.
According to Inc.com, Deel is currently valued at $12 billion.
OpenAI
Founded in 2015 as a non-profit. OpenAI has become an industry leader in artificial intelligence. As the company that created ChatGPT, DALL·E, Codex, and Whisper, OpenAI has made generative AI more accessible to everyone.
Currently valued at $300 billion (CNBC), OpenAI shows no signs of slowing down.
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Rippling
Rippling is a workforce management system, that combines HR, IT and finance all into one platform. Rippling recently raised $450 million in Series G funding, bringing its valuation to $16.8 billion.
Through their platform, Rippling makes it easy for companies to manage various elements of their business in one place.
Wiz
Wiz is a cloud security company that has become a big name in the cybersecurity sector. In March 2025, Google announced its intention to acquire Wiz for $32 billion, marking one of the biggest deals in the company’s history.
Wiz acts as an online security guard, quickly alerting businesses to cyber risks and securing their data online.
Notion
Notion is a connected workspace designed to help people better manage their workflows. With over 100 million users from around the world, the platform has gone from strength to strength, providing people with a place to organise their notes, tasks and projects.
As of 2021, Notion was worth $10 billion and its trajectory is only heading upwards.
Airtable
Airtable is a database building platform that allows companies to manage and automate set tasks.
As a no-code platform, it’s used by over 400,000 companies to help streamline elements of their business by making it easier to collaborate, automate and manage large pools of data.
Discord
Discord is a social media platform for gamers that is used by over 500 million people. The platform allows gamers to connect, chat, video and text, bringing them together to build communities.
With a valuation of $15 billion as of Jan 2025, analysts are now speculating around whether Discord is going to IPO, solidifying it as a multi-billion dollar company.
Toast
Toast is a restaurant point of sale and management system that currently serves around 120,000 US restaurants. It allows food businesses to connect their entire companies in one place, with add-ons for payroll, online ordering, marketing and more.
As of 2021, it was valued at $33 billion according to Reuters, making it a huge player in the US economy.
