We're looking for something simple and instantly recognizable. It's not a requirement but would be good if the logo works as a silhouette as well so that the outline alone is instantly recognizable.
What might be best is a mix between an instantly recognizable logo like Coca-Cola and something more complex like the "Lannisters" logo in the above examples.
I think the "Starbucks" logo (also in examples) strikes a good balance between instantly recognizable and a little more complex.
The logo will be used in international television advertising campaigns.
This is just a suggestion, I quite like fun comic book style logos. Like this: http://99designs.com/illustrations/…entries/46 (NOTE: I'm not totally in love with this idea, it needs some adapting because trading options is serious and a comic book style logo is not 100% appropriate. It's just to give you some mild inspiration.)
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