But you already have numbers and financial aid packages for your two other schools, right?
At this point, admissions will be entering the countdown phase until orientation. We want to have as many commits and enrollment deposits to lock the class down in preparation for the pomp of orientation.
You want to know when Penn needs the information to make its best offer to you. They don't want to engage in negotiation; there's not enough time. They'll do it if they have to... like if you were able to get a better counteroffer, but this isn't the real estate market. No one wants to haggle over a few thousand if they can help it and in this volatile financial environment.
Send them a nice email requesting a virtual call about if Penn Financial Aid would like information about scholarship/financial aid packages you have already received from schools whose offers you are also entertaining (don't drop names). You would like to decide where to commit-to-enroll as soon as possible to start planning your move. All you need is to know WHEN they want this information before giving it to them, and do it in a way that considers their own urgency and timeline.
Remember, this week is the countdown to Match Day. We may be distracted for the next week or so. Then again, financial aid should be doing exit interviews with graduates about their debt management while also answering questions about financial aid from all incoming students.