If on Win32 you could try using the Win32::IE::Mechanize module and let IE take care of trickier issues like https and cookie handling:

#! usr/bin/perl -w

use strict;
use Win32::IE::Mechanize;

my $ie = Win32::IE::Mechanize->new(visible=>1);

$ie->get('https://noii.nasdaqtrader.com');

$ie->form_name('Form1');

$ie->set_fields(
    txtUserName => 'email@wherever.com',
    txtUserPass => 'password' 
);
   
$ie->click('loginButton');
[download]

You can dump the HTML at any time for parsing with the $ie->content method