Do you mean is HN their best sales channel for what they are selling?
The blog appears to show a wide variety of posts about different subjects. I'm only seeing a few that appear to be HN targeted.
But on the topic what I'd like to see is a pricenomics post that details the business purpose and value of the blog posts...comparing which place they are posting to that seems to payoff in the most new customers for example.
The blog posts we do that use data crawled from the web pay off enormously in terms of generating leads and revenue for our data business. Here's an example.
http://priceonomics.com/the-seo-dominance-of-retailmenot/
The rest of the blog posts are done because we want to make them. In the past, there wasn't any direct financial payoff from them. Now, it seems like they lead to book sales which is neat.
For the hedge fund market (or for any market for that matter) you might want to append this statement:
"via API or spreadsheet" on http://priceonomics.com/data-services/ to also say "via Spreadsheet, Web interface or API".
You should probably also dedicate a complete "sell" page to each industry you are targeting. Hedge funds deserve a dedicated page if that is a (and I suspect it is or will be) big whale for you. I'm guessing you know this but PN hasn't done it yet.
When making buying decisions people lock onto things that say "ok they have exactly what I need and are experts in helping my industry and my competitors are using them".
"We help financial service firms crawl data"
"We help hedge funds crawl data"
"We help retailers crawl data"
"We help non-profits crawl data"
And so on....