i spent some time today researching the Lazy Prices business idea https://papers.ssrn.com/sol3/papers.cfm?abstract_id=1658471
my old acquaintance michelle also has related comments http://www.aaii.com/journal/article/using-sec-filings-to-identify-risk-factors.touch
quantlayer started and failed last year because it was selling to developers of sec api based products. a bank shot but nice try. https://medium.com/@QuantLayer/introducing-a-modern-api-to-access-sec-filings-86edf7306be4
secapi is still the well http://developer.edgar-online.com/docs https://www.sec.gov/edgar/searchedgar/currentevents.htm
and bill mcdonald is potentially helpful http://sraf.nd.edu/textual-analysis/resources/ but outdated.