SUPPLEMENT TO THE FIDELITY MORTGAGE SECURITIES FUND
PROSPECTUS
DATED SEPTEMBER 20, 1996
At a recent meeting, the Board of Trustees voted to allow Fidelity
Mortgage Securities Fund to create additional classes of shares that will
be sold primarily through financial intermediary distribution channels. The
current single existing class of shares of the fund, which will become
known as the "Initial Class," will be closed to new accounts effective on
or about February 28, 1997. Initial Class shareholders on or prior to that
date, including participants in an employee benefit plan which offered the
fund on or prior to that date (except participants in an employee benefit
plan for which an affiliate of FMR maintains the accounts at the
participant level other than pursuant to a recordkeeping agreement), will
continue to be able to purchase Initial Class shares of the fund.
The following information replaces information regarding how to open an
account in the "How to Buy Shares" section on page 18.
MINIMUM INVESTMENTS
TO OPEN AN ACCOUNT $2,500
For Fidelity retirement accounts $500
