The analytics role is always hiring new people, and they are usually pretty good about offering positions to their interns. If you want to ensure an offer, put in the time to study the material, and take the internship seriously. Demonstrate that you have an interest in finance/the markets and can be personable. The internship will most likely be split between analytics and the sales team, so they want to make sure you can communicate well. Utilize your resources, ask questions, meet people who already have the job, take everything seriously, and show an interest. If you can do these, you will lock in a spot for yourself.