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MFS GOVERNMENT SECURITIES FUND
Supplement to the July 1, 1996 Prospectus
and Statement of Additional Information
The following information should be read in conjunction with the Fund's
Prospectus and Statement of Additional Information ("SAI"), dated July 1, 1996,
and contains a description of Class I shares.
Class I shares are available for purchase only by certain investors as
described under the caption "Eligible Purchasers" below.
EXPENSE SUMMARY
Shareholder Transaction Expenses: Class I
Maximum Initial Sales Charge Imposed on Purchases of Fund
Shares (as a percentage of offering price)........................ None
Maximum Contingent Deferred Sales Charge (as a percentage
of original purchase price or redemption proceeds, as applicable). None
Annual Operating Expenses of the Fund (as a percentage of average net assets):
Management Fees (after expense limitation)(1)....................... 0.30%
Rule 12b-1 Fees..................................................... None
Other Expenses(2)(3)................................................ 0.30%
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Total Operating Expenses (after expense limitation)(4).............. 0.60%
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(1) As of April 1, 1997, the Adviser voluntarily reduced the management fee to
0.30% per annum of the Fund's average daily net assets for an indefinite
period of time. Prior to that date, the Adviser voluntarily reduced its
management fee to 0.25% per annum of the Fund's average daily net assets.
Absent this reduction, the management fee would have been 0.40%.
(2) "Other Expenses" is based on Class A expenses incurred during the fiscal
year ended February 29, 1996.
(3) The Fund has an expense offset arrangement which reduces the Fund's
custodian fee based upon the amount of cash maintained by the Fund with its
custodian and dividend disbursing agent, and may enter into other such
arrangements and directed brokerage arrangements (which would also have the
effect of reducing the Fund's expenses). Any such fee reductions are not
reflected under "Other Expenses."
(4) Absent the expense limitation described in footnote (1) above, "Total
Operating Expenses" would have been 0.70% of the Fund's average daily net
assets.
Example of Expenses
An investor would pay the following dollar amounts of expenses on a $1,000
investment in Class I shares of the Fund, assuming (a) a 5% annual return and
(b) redemption at the end of each of the time periods indicated:
Period Class I
1 year.................. $ 6
3 years................. 19
The purpose of the expense table above is to assist investors in
understanding the various costs and expenses that a shareholder of the Fund will
bear directly or indirectly. A more complete description of the Fund's
management fee is set forth under the caption "Management of the Fund" in the
Prospectus.
The "Example" set forth above should not be considered a representation of past
or future expenses of the Fund; actual expenses may be greater or less than
those shown.
ELIGIBLE PURCHASERS
Class I shares are available for purchase only by the following purchasers
("Eligible Purchasers"):
(i) certain retirement plans established for the benefit of employees of
Massachusetts Financial Services Company ("MFS"), the Fund's investment
adviser, and employees of MFS' affiliates; and
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(ii) any fund distributed by MFS Fund Distributors, Inc. ("MFD"), the Fund's
distributor, if the fund seeks to achieve its investment objective by
investing primarily in shares of the Fund and other funds distributed by
MFD.
In no event will the Fund, MFS, MFD or any of their affiliates pay any sales
commissions or compensation to any third party in connection with the sale of
Class I shares; the payment of any such sales commission or compensation would,
under the Fund's policies, disqualify the purchaser as an eligible investor of
Class I shares.
SHARE CLASSES OFFERED BY THE FUND
Four classes of shares of the Fund currently are offered for sale, Class A
shares, Class B shares, Class C shares and Class I shares. Class I shares are
available for purchase only by Eligible Purchasers, as defined above, and are
described in this Supplement. Class A shares, Class B shares and Class C shares
are described in the Fund's Prospectus and are available for purchase by the
general public.
Class A shares are offered at net asset value plus an initial sales charge
up to a maximum of 4.75% of the offering price (or a contingent deferred sales
charge (a "CDSC") upon redemption of 1.00% during the first year in the case of
purchases of $1 million or more and certain purchases by retirement plans), and
are subject to an annual distribution fee and service fee up to a maximum of
0.35% per annum. Class B shares are offered at net asset value without an
initial sales charge but are subject to a CDSC upon redemption (declining from
4.00% during the first year to 0% after six years) and an annual distribution
fee and service fee up to a maximum of 1.00% per annum; Class B shares convert
to Class A shares approximately eight years after purchase. Class C shares are
offered at net asset value without an initial sales charge but are subject to a
CDSC upon redemption of 1.00% during the first year and an annual distribution
fee and service fee up to a maximum of 1.00% per annum. Class I shares are
offered at net asset value without an initial sales charge or CDSC and are not
subject to a distribution or service fee. Class C and Class I shares do not
convert to any other class of shares of the Fund.
OTHER INFORMATION
Eligible Purchasers may purchase Class I shares only directly through MFD.
Eligible Purchasers may exchange Class I shares of the Fund for Class I shares
of any other MFS Fund available for purchase by such Eligible Purchasers at
their net asset value (if available for sale), and may exchange Class I shares
of the Fund for shares of the MFS Money Market Fund (if available for sale), and
may redeem Class I shares of the Fund at net asset value. Distributions paid by
the Fund with respect to Class I shares generally will be greater than those
paid with respect to Class A shares, Class B shares and Class C shares because
expenses attributable to Class A shares, Class B shares and Class C shares
generally will be higher.
The Adviser has voluntarily reduced its management fee to 0.30% per annum
of the Fund's average daily net assets for an indefinite period of time. This
arrangement may be revised or terminated at any time without notice to
shareholders.
The date of this Supplement is April 1, 1997
