【正文】
3 C 2 – If we start with $C, spend at a constant rate each period and replace our cash with $C when we run out of cash, our average cash balance will be C 2 – The opportunity cost of holding is C 2 – C 2 – R 27A3 The BAT Model Time C As we transfer $C each period we incur a trading cost of F. 1 2 3 C 2 – The trading cost is F – T C – T C If we need $T in total over the planning period we will pay $F times. 27A4 The BAT Model C* Size of cash balance FTRC ???? C2c o s t T o t a lOpportunity Costs RC ?2FT ?CTrading