Should requests for code that implement some method relevant to the field be considered on-topic? An answer to such a question could consist of just the (pseudo)-code or a link to a full implementation.
I notice that there is a proposal for "Financial Markets" in Area51 ( link ) with currently 118 followers.
It is defined as:
Proposed Q&A site for investors and analysts of the financial markets
and general stock investment practices.
I'm afraid that it may be redundant to Quantitative ...