Digital analytics marketing firm SimilarWeb raises $47M led by Viola Growth, sources say at a valuation nearing $800M
Companies are increasingly dependent on digital platforms for their business growth, and that is giving a boost to analytics firms that are helping them make better sense of that digital landscape.
Context & Ripple Effects
This 2017 round slots into a clear funding arc for SimilarWeb: the $47M led by Viola Growth at a valuation nearing $800M put it level with peers like Sprout Social, whose ~$800M Series D came a year later, and just below ad-measurement firm Integral Ad Science's $850M mark under Vista Equity.
The bet paid forward: SimilarWeb went on to raise another $120M in 2020, taking total funding to $240M, before listing on the NYSE at roughly double this round's valuation — evidence that platform-dependence analytics was compounding, not peaking.
First-order effects
- SimilarWeb gains fresh capital and a new lead investor in Viola Growth to scale its site- and app-traffic intelligence business while staying private at a near-$800M valuation.
Second-order effects
- Rival analytics vendors face a well-funded benchmark: BitSight ($600M), Sprout Social (~$800M) and later Amplitude ($4B) and Adverity ($120M SoftBank-led) all raised against the same thesis that companies need third-party measurement of digital platforms.
Third-order effects
- Independent measurement of platform traffic is hardening into an asset class of its own — one that ultimately reaches public markets, with SimilarWeb's IPO at a ~$1.6B valuation validating the category the 2017 round priced at half that.
The trend: As businesses grow dependent on a handful of digital platforms, independent web-traffic and marketing analytics firms are attracting progressively larger private rounds and, eventually, public listings.