We help new and established brands develop opportunities, solve complex challenges, and reimagine their value.
From customer insights to planning what’s next, we show you how to make better, more thoughtful, more deliberate decisions.
Don’t just take our word for it
We work with a lot of agencies and I’ve been at this for 28 years. Almost every experience I’ve had with an outside firm is that they kind of sort of get it but they fall short. This is honestly the best concept presentation I’ve ever seen. Everything is spot on. You get our students. You’ve over delivered and I want it.
John Polstein, CEO at Kaplan Test Prep
Our partnership with Part and Sum has significantly elevated our brand presence. Their strategists and technologists have helped us learn more about our customers and turn those findings into actionable strategies.
Venus Williams, CEO EleVen
Part and Sum have been true partners in helping us to stand up a new growth team in our business. They seamlessly bolted on, helping us to move fast, and enabling the new team to run on their own moving forward. They’re my go-to when faced with a tough problem!
Laura Henderson, EVP, Marketing and eCommerce at Spin Master
2 years ago we launched a digital campaign under the recommendations of P+S, unsure of the brand’s digital potential. Under their guidance we have been able to scale our marketing spend by 10x while maintaining high returns. They are hands-on, helping us understand our performance. And they challenge us to produce new ideas that work beyond traditional modes.
Laura Cramer, Co-Founder at Apiece Apart
We act as a fiduciary for the millions of dollars of media we manage each year.
Proud partners with
Since 2018, we’ve helped our clients realize hundreds of millions in incremental revenue.
of our team members have founded and managed their own business before joining Part and Sum.
of our team members have been an early employee at a startup.
Sign up to our newsletter and receive weekly emails from