11. (4) We have considered Reinvestment Risk and Price Risk when long term funding is needed, such as for pensions. But interest rates, bond prices and YTM fluctuate and periodic adjustments in a portfolio may be needed. The concepts of "Immunization" and "Dynamic Immunization" are suggested means by with a portfolio can manage Reinvestment Risk. The concepts of immunization noted mean: a. Offsetting reinvestment and price risks of bonds with counter cyclical well diversified common stocks 4 b.Offsetting reinvestment and price risk of bonds with common stock and STRIPS. O c.Offsetting reinvestment and price risk of bonds with foreign securities and bonds; O d. Matching the duration of the portfolio bonds to target date of needed funds & Rebalancing periodically to maintain the duration that matches the target maturity date