Boston’s Biggest Tech Funding Rounds in October Topped $2.7B

These rounds represent a 6x year-over-year increase over October 2020 tech funding in Boston.
Written by Delilah Alvarado
November 1, 2021Updated: November 2, 2021
Photo: Shuttershock

The latest tech funding rounds in Boston just made some unicorns even bigger. These rounds not only surpassed last month’s total but were also 6x larger than October 2020 funding levels. Read on to see which Boston companies landed the largest new investments to fund their future plans.


#5. $135 million, October 7 

The Cambridge application networking startup just raised a fresh $135 million, bringing its valuation up to $1 billion and meaning it is one of the latest Boston startups to achieve unicorn status. The Series C round was led by Altimeter Capital Management. Founded in 2017, the company provides microservice connectivity in the cloud and will continue to grow its team with the fresh investment.


#4. $200 million, October 19 

The Burlington-based digital security unicorn secured $200 million in a Series F funding round. The funding was led by Madrone Capital Partners while high-profile investors Accel and Warburg Pincus also participated, as the need for cybersecurity in the digital world grows in all industries. The cybersecurity startup will use the funding to hire for more roles, and continue their efforts to promote a “safer internet.” 


#3. $250 million, October 26 

The security analytics company recently became a unicorn with its latest investment round led by TCV with participants like General Atlantic, Insight Partners and Bessemer Venture Partners. The company offers a cloud-based platform that helps businesses like H&R Block and Ulta Beauty manage their platforms, along with several cybersecurity features. The funding will go towards expanding into new regions with its products. 


#2. $1 billion, October 25 

The Amazon aggregator just landed its fifth mega-round this year, which makes sense when considering its the largest acquirer of Amazon third-party sellers. Global VC giant Silver Lake led this round, which will allow the company to continue its rapid growth and expand hiring. 


#1. $1.15 billion, October 8

Waltham-based Devoted Health, which has a goal of improving the health of elder Americans, raised $1.15 billion in a Series D round. SoftBank Vision Fund 2 joined the round along with other investors including Andreessen Horowitz, General Catalyst and more. The Medicare Advantage company is hoping to create the world’s first virtual “blue zone” where people can enjoy longer, healthier lives. The new funding will fuel the company’s nationwide expansion.  


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