Financing by raising equity dillema

i would like to know if doing a general public offering in the US at the same tame as other companies within the same industry will affect the public offering itself
or would it diminish equity investors to add that company into their portfolio.
and concerning a public view point, could it link that company to others in the publics mind?

Assuming everything else to be equal between them, IPOs for competing businesses offered at the same time wouldn't be a negative in my mind. I think investors would see it as a sign of growth in that industry and it could likely produce better results for all than they would get individually.