It might not be easy to track the IBM applicant status, simply because there are no easy-to-use application status tracking systems like in other companies. Such absence of visibility is often right from the processes internal to the organization and more so, the number of applications, hence it becomes very hard for human resources to provide individual updates for every single candidate. Yet still, it is possible to contact the HR person who reached out for updates and that is a good way to demonstrate interest and show initiative.
In most cases, a candidate has to wait for one to three weeks to get any response from HR or the organization in question concerning an interview attended. This period may vary depending on the number of candidates and how intricate the recruitment exercise is. Keeping your hopes up and being active will keep you occupied and prepared for the eventuality of a call for any interviews.