Great ideas -- thanks! A couple of people have suggested similar, though selling to hedge funds.
Right now, I think the greatest growth is still from adding more brands and making them more accessible (improving search and navigation), to yield more traffic. Spinning up a new product and sales channel might be a distraction, but definitely worth thinking about as the site grows.
You could also repurpose the idea and leverage it as a traffic driver. Run a few high-level queries to get the baseline stats, then post those up on a benchmarks page.
That way you have a draw for those types of needs, yielding more traffic from that niche. And could (but don't have to) leverage it as a passive sales channel and low-effort product by just throwing a blurb at the bottom of that to contact if they're looking for something more specific. Which would be a low-effort product of just tweaking the queries you created to get the data for that page, plus the one time upfront effort of making a splashy Excel/Powerpoint template to drop the bespoke query results into.
That'd end up with a solid, minimal effort traffic driver. A potential passive sales channel with minimal incremental effort. And since the targeting/messaging is open ended in nature and you don't want to focus heavily on a new sales channel and product offering, you can let it sit there and mellow while seeing which potential market segments (hedge funds, agencies, in-house, etc) shake out organically. Giving you some potential insights into which area to focus on if you do eventually want to go from passive to active.
Right now, I think the greatest growth is still from adding more brands and making them more accessible (improving search and navigation), to yield more traffic. Spinning up a new product and sales channel might be a distraction, but definitely worth thinking about as the site grows.