This simple custom function provides the most efficient solution for displaying custom post types on the front page of your WordPress site.
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Display CPT’s In Grid Style
If your theme already includes an archive-portfolio.php file, simply rename the file to home.php or front-page.php.
Thats all there is to it.
Add a custom function to your child themes functions file and rename your archive-cpt.php file to front-page.php or home.php.
Note: This solution assumes you have used the code from the Executive Pro theme by StudioPress which includes all the PHP files and CSS code to create a custom post type with taxonomy support for any child theme running on Genesis.