It could be some setting I am not aware of but these are the errors I receive:

Warning: file() [function.file]: URL file-access is disabled in the server configuration in /PATH_EDITED/wp-content/plugins/my-gstock-portfolio/gstock.php on line 55

Warning: file(https://…@cleverpawn.com&password=kipper) [function.file]: failed to open stream: no suitable wrapper could be found in /PATH_EDITED/wp-content/plugins/my-gstock-portfolio/gstock.php on line 55

Warning: Invalid argument supplied for foreach() in /PATH EDITED/wp-content/plugins/my-gstock-portfolio/gstock.php on line 57