What could count toward financial requirements for UK student visa applications?
This can be found on the current guidance document issued by UKVI for student visas. The guidance explains the money can be yours or your parents and should be:


cash funds in the bank (this includes savings accounts and current accounts even when notice must be given); or
a loan letter (the loan must be provided by your national government, state or regional government, or by a government sponsored student loan company or be part of an academic or educational loans scheme); or
official financial or government sponsorship available to you.


It continues stating:


  Other accounts or financial instruments such as shares, bonds, overdrafts, credit cards and pension funds are not acceptable, regardless of notice period.


Of course, you should really make sure to look at the latest guidance document in full.