I whole heartedly agree with Jon. Technical skills are absolutely irrelevant when it comes to an MBA resume. Actually, they're irrelevant when it comes to MOST resumes. Unless you're applying for a very specific job that lists certain skills as necessary, they add very little to a resume.
Additionally, your previous experience with Bloomberg, etc. won't help you get into MBA programs. Most programs have training programs on this anyway. So if you don't have it going in, you'll have it coming out. The time to add those skills is when it comes to RECRUITING for internships and full time offers.
Remove it. Definitely include your volunteering activities. Also, don't discount a truly personal statement to soften up the resume. Do you have a dog that means the world to you? Perhaps you're a proud uncle or aunt? Or maybe you play paintball every week. Whatever it is, allow the reviewer to connect with you as an individual. Your abilities at Bloomberg don't allow for that.
Bhavik