These need to be more financial looking. I would forget the circle or enclosement of the logo. Use more of an illustrative horse and don't enclose the logo in a circle or shape.
Take a look at some of these that don't enclose the logo and use more of an illustrative horse. HOwever, remember it is a financial company so strong fonts and presence.
Illustrative Horse Images:
http://4.bp.blogspot.com/_YzUVJXsdmh0/TKZDpc_KpcI/AAAAAAAAE-0/TpZDsECIO1Q/s1600/MyWEG.jpghttp://www.biz-logo.com/pre-designed-17/horse-logos5.gifOther Financial Company Logos:
http://www.logosnap.com/samples/images/financiallogos/financial-logo-design.jpg