Work experience in several companies or a specific one?

I'm a second-semester business informatics student. This semester, I'm working in the IT department of a company with approximately 6,000 employees. I'm doing it primarily to gain experience. Let's assume the company wants to extend my contract. Now, would it be better to gain longer experience in one specific location or to visit new companies? If I apply and receive positive feedback from larger companies than my current one (e.g., Bosch, Daimler, Porsche, etc.), would you recommend changing? New jobs, new tasks, new faces? Or not be greedy and be grateful for a good job.