Here's a Quora post about it: https://www.quora.com/What-font-is-used-in-Bloomberg-Termina... . It's designed by Matthew Carter, the designer of Georgia and Verdana, he's an expert on screen-readable fonts.
The interesting thing is that one part of the optimization for finance was all those special fraction glyphs. I have never seen such weird fractions in actual use, I would have thought people use normal decimal numbers everywhere.
I don't suppose I'll ever find a suitable replacement, which also means that I jump at every opportunity to try out a new monospace font. I currently have 7 in my .Xdefaults, and these are just the ones I kinda-sorta liked and hadn't deleted.
> The software contained herein (the "Software") is made available to you ("You") solely pursuant to the terms of the agreement that You previously entered into with Bloomberg ("Bloomberg Agreement"). IF YOU HAVE NOT ENTERED INTO THE BLOOMBERG AGREEMENT, YOU ARE NOT AUTHORIZED TO INSTALL, RUN AND/OR OPERATE THE SOFTWARE OR ANY PORTION THEREOF IN ANY MANNER WHATSOEVER.
I think that's pretty darn clear if you ask me.
Besides that, in the agreement itself well ... actually it's kind of vague, because it's sooo dang long and in such small print that I fell asleep hunting for it: https://www.documentcloud.org/documents/700565-bloomberg-ter...
I suppose in the long run, as long as you aren't redistributing it or making a profit off its use, Bloomberg considers its data more valuable than its terminal software or fonts. After all, they do make it publicly available for download without a license agreement. (Shakes fist at Oracle/Sun...)
Bloomberg commissioned the custom-designed font from Matthew Carter[1] (Verdana/Tahoma/Georgia fame) because we outgrew the ancient simple bitmap font that was used since the software was moved to run on Windows. A lot of time and effort went into creating it. The font is actually not our property (it does contain other glyphs not created as part of the project and owned by "large type foundry X") and we are granted a license to distribute the font to our customers in our software.
I just wanted to point out that this type of thing comes up all the time and is misunderstood by most people who are used to using FOSS. We can't give away what we do not own, so the license restrictions are not necessarily because we're selfish and don't want something to be open, but because there are actual license fees, contracts, etc. signed with the owner backing it all up. As for why the owner ultimately does not want it to be free -- they are a type foundry and are in the business of selling fonts.
(It's a separate discussion, but this also usually applies to data as well as fonts.)
Font files, meaning the specific binary files implementing a typeface on your computer, most certainly are copyrightable and licensable. If I were to purchase Myriad from Adobe, I couldn't just hand that font over to you-- that would be against the license agreement and would qualify as software piracy.
(This is all based on US copyright; YMMV if you're elsewhere.)
What I'd personally find more interesting is a first-principles research effort to find out what makes some fonts so much better than others. My gut tells me that such an effort might yield, as a side effect, a formal method for creating such fonts that are especially well suited for a specific purpose.
US Government Bonds, the touchstone of the core Bloomberg user, are traded in 256ths of a dollar.
The notation there, however, is not fractions. The number shown is whole dollars, then 32nds, then 8ths of a 32nd; except 4/8ths is shown as '+'
Fun times...
I agree it's a lovely monospace font for terminal work.