No they do not.

Further, They have a partnership with Daniel:

"As the global marketplace for authentic products of current culture, we’re always looking for ways to disrupt and innovate within our communities. Such is the case with our new groundbreaking partnership with contemporary artist Daniel Arsham, who will be collaborating with us to change the way our marketplace impacts the global arts community.

This multifaceted partnership is concentrated in three focus areas: supporting the next generation through arts education funding, amplifying rising artists and creating a model for equitable compensation through direct-to-consumer releases, and establishing a trusted secondary marketplace for Daniel Arsham Editions. It also includes the creation of the new Daniel Arsham x StockX Next Gen Scholarship Fund at New York’s historic The Cooper Union for the Advancement of Science and Art. This fund will work off donated revenue from the sale of all art prints on our marketplace, a new product category that Arsham will help guide in an advisory role. Our brand new art prints catalog includes more than 350 different prints from over two dozen artists including Takashi Murakami, KAWS, Yoshitomo Nara, Shepard Fairey, Hebru Brantley, Matt Gondek, Madsaki, and Futura. "