Does VBA for Excel not allow nested while loops? I don't write macros all that often but whenever I do, I nest a while loop (because I forgot that it didn't work last time), it errors out and I ...

Program Design There are Four Loops: (A) is the Main Loop for going through all data and assigned tickerIndex for 12 stocks respectively. (B) is a nested loop in the main loop (A), go through stocks ...