LORD ABBETT
SECURITIES TRUST
Lord Abbett
International Opportunities Fund
(the “Fund”)
Supplement dated
May
1
3
, 2025
to the
Summary
Prospectus
and
Prospectus
,
each
dated
March
1
,
202
5
, as supplemented
Effective immediately, the
Principal Investment Strategies for the Fund will be revised as follows. Please
review this important information carefully.
The first paragraph under the section titled “Principal Investment Strategies”
of
the summary
prospectus
is replaced with the following:
The Fund invests in stocks of companies principally based outside the United States. Under normal
conditions, the Fund pursues its investment objective by investing at least 65% of its net assets, plus the
amount of any borrowings for investment purposes,
in equity securities of small companies. A small
company is defined as a company having a market capitalization at the time of
purchase
that falls within
the market capitalization range of companies in the S&P
D
eveloped
E
x
-
U
.
S
.
SmallCap
®
Index. The Fund
us
es a “blend” strategy to gain investment exposure to both growth and value stocks
, or to stocks
with
characteristics of both.
The first paragraph under the section titled “More Information About the Funds
–
Principal
Investment Strategies” relating to
Int
ernational Opportunities Fund is replaced with the following:
The Fund invests in stocks of companies principally based outside the United States. Under normal
conditions, the Fund pursues its investment objective by investing at least 65% of its net
assets, plus the
amount of any borrowings for investment purposes, in equity securities of small companies. A small
company is defined as a company having a market capitalization at the time of purchase that falls within
the market capitalization range of
companies in the S&P Developed E
x
-
U.S. SmallCap
®
Index
,
a widely
-
used benchmark for small
-
sized stock performance. The market capitalization range of the S&P Developed
Ex
-
U.S.
SmallCap
®
Index as of June 30, 2024, following its most recent annual reconstitu
tion, was
approximately $18 million to $18 billion. This range varies daily.
The Fund may invest its remaining assets
in equity securities of mid
-
sized or larger companies.
The Fund uses a “blend” strategy to gain investment
exposure to both growth and val
ue stocks, or to stocks with characteristics of both.
Capitalized terms used in this Supplement shall, unless otherwise defined herein, have the same meaning
as given in the Prospectus and/or
the Statement of Additional Information
.
Please retain
this document for your future reference.