*MUNI-BOND FUNDS SEE $2.4 BILLION WEEKLY CASH OUTFLOW: LIPPER
*U.S. INVESTMENT-GRADE FUNDS SEE $8.19B OUTFLOW: LIPPER
*U.S. HIGH-YIELD FUNDS SEE $168.5M INFLOW IN WEEK: LIPPER
*MUNI-BOND FUNDS SEE $2.4 BILLION WEEKLY CASH OUTFLOW: LIPPER
*U.S. INVESTMENT-GRADE FUNDS SEE $8.19B OUTFLOW: LIPPER
*U.S. HIGH-YIELD FUNDS SEE $168.5M INFLOW IN WEEK: LIPPER