Let's clarify the terminology:
Skeuomorphism is the design concept of making items represented resemble their real-world counterparts. Skeuomorphism is commonly used in many design fields, including user interface (UI) and Web design, architecture, ceramics and interior design.
So, when you want to save a email in Outlook 2016 you see this icon:
If you use Revolution R Open on Windows you see this icon:
These icons are designed to resemble a real-world object - the floppy disc. But the last time I saw a floppy disc was around 2003. They are gone the way of the Norwegian blue and there is no pining for the fjords...
So, when I look at many Electronic Trading user interfaces I see a great deal of Skeuomorphism. It's interesting that modern UX is something that many investment banks try to embed into their systems but the end results are often far from industry best practise...