The ornamental design for a displayscreen with a graphical user interface for a financialanalysis and tradingassistant and platform web application, as shown and as described.
FIG. 1 is a front view of a first embodiment of a display screen with a graphical user interface for a financial analysis and trading assistant and platform web application;
FIG. 2 is a front view of a second embodiment of the display screen with a graphical user interface for a financial analysis and trading assistant and platform web application; and,
FIG. 3 is a front view of a third embodiment of the display screen with graphical user interface for a financial analysis and trading assistant and platform web application.
The broken lines showing the display screen and the remainder of the graphical user interface form no part of the claimed design. All text is depicted in broken lines.