Sigh. Bloomberg-er here -- this article is old. There is certainly a lot of Fortran remaining in sections (you don&#x27;t rewrite working code with C linkage in another language just because -- you rewrite it if you have something to gain), but it is nowhere near as bad as this old article makes it sound. Many teams are C++ only and have been for a long time (see our open-source code on GH for a sample). Keep in mind that if you deal in absolute numbers you are missing the bigger picture -- the actual real number will be much smaller and it will be an even smaller <i>percentage</i> of the total codebase.<p>edit: Can mods put (2006) in the title? Seems reasonable...