SPX options - Dividends

Hello,

I just recognized that at some websites with option chains there are different implied volatilites for calls and puts with same strike and expiration. Ist this realted to dividends or what can be the reason?
(e.g. http://oic.ivolatility.com/oic_adv_options.j;jsessionid=b6W4_1lPfw9f?ticker=spx )

thanks and regards

 

...or is the S&P 500 (underlying of SPX options) regularly adjusted for dividends?

 

Yes, most likely it is the effect of dividends (your link doesn't work).

No, SPX options are not adjusted for dividends.

 

@MTE

Thanks a lot for your reply.

Just wondered if SPX options are influenced by S&P 500 dividends cause implied vols at same strikes/exp. are different.