One thing that confuses me is what is the real PE ratio..Looking...

One thing that confuses me is what is the real PE ratio..

Looking at E-Trade
BNB at price 22.31
Key measures ==> PE=13.27
On their interactive chart => PE=18.989

Comsec
PE=13.27

Fin Review at at price yesterday of 22.10 =>PE=14.1

So who has it correct or do they all calculate PE differently??.. where did you calculate 16 from, or based on what price. The difference in expected growth between 13 and 16 is very different.

The figure I dont have confidence in is the value on the E-trade interactive chart which for some companies bears no resemblance to the PE declared under Key measures.

I would be interested if anyone can tell me if the different source calculate their PEs differently.