Summer Internship

Applied online and got a response same day. Set up a time to have a phone interview, but they never called. After 30 minutes of waiting by the phone, I finally was able to find a number to call in and talk to them. The guy I talked to said that the person who was supposed to interview me was busy and he'd call me back. When he did, the interview took about an hour, and was almost all brain teaser type questions, but most of then were quite difficult, much harder than those that other people have said that they were asked. We also talked about why I was interested in trading and my resume. Interviewer was nice and patient, even gave me some guidance on some of the harder questions.