>I've seen very sophisticated OMSs (Order Management Systems) built completely using excel workbooks, with 1 sheet containing orders and formula's to pull realt

>I've seen very sophisticated OMSs (Order Management Systems) built completely using excel workbooks, with 1 sheet containing orders and formula's to pull realtime pricing from bloomberg, reuters, another sheet for pre-trade analysis, another for the actual trades, and a summary sheet with pivot tables and charts to show the trade progress and summary. Wait, people are making API calls in VBA to insert into Excel spreadsheets?