As filed with the Securities and Exchange Commission on September 9, 2019.
File Nos. 033-11444 811-04986
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C.  20549
FORM N-1A
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
Pre-Effective Amendment No.
Post-Effective Amendment No.		78	[X]
and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940
Amendment No.		80	[X]
FRANKLIN INVESTORS SECURITIES TRUST
(Exact Name of Registrant as Specified in Charter)
ONE FRANKLIN PARKWAY, SAN MATEO, CA  94403-1906
(Address of Principal Executive Offices)  (Zip Code)
Registrant's Telephone Number, Including Area Code:(650) 312-2000
Craig S. Tyle, One Franklin Parkway, San Mateo, CA 94403-1906
(Name and Address of Agent for Service of Process)
Approximate Date of Proposed Public Offering:
It is proposed that this filing will become effective (check appropriate box):
[X]	immediately upon filing pursuant to paragraph (b)
[ ]	on (date) pursuant to paragraph (b)
[ ]	60 days after filing pursuant to paragraph (a)(1)
[ ]	on (date) pursuant to paragraph (a)(1)
[ ]	75 days after filing pursuant to paragraph (a)(2)
[ ]	on (date) pursuant to paragraph (a)(2) of Rule 485
If appropriate, check the following box:
[ ]	This post-effective amendment designates a new effective date for a previously filed post-effective amendment

This Amendment to the registration statement on Form N-1A relates to the prospectus and SAI of Franklin Low Duration Total Return Fund, series of the Registrant and does not otherwise delete, amend, or supersede any information contained in the Registration Statement.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it meets all of the requirements for effectiveness of this Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933, and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized in the City of San Mateo and the State of California, on the 6th day of September, 2019.

FRANKLIN INVESTORS SECURITIES TRUST

(Registrant)

By: /s/ Steven J. Gray

Steven J. Gray

Vice President and Co-Secretary

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities and on the dates indicated:

EDWARD D. PERKS*	Chief Executive Officer – Investment
Edward D. Perks	Management
	Dated: September 6, 2019
MATTHEW T. HINKLE*	Chief Executive Officer – Finance
Matthew T. Hinkle	And Administration
	Dated: September 6, 2019
GASTON GARDEY*	Chief Financial Officer and Chief
Gaston Gardey	Accounting Officer
	Dated: September 6, 2019
HARRIS J. ASHTON*	Trustee
Harris J. Ashton	Dated: September 6, 2019
TERRENCE J. CHECKI*	Trustee
Terrence J. Checki	Dated: September 6, 2019
MARY C. CHOKSI*	Trustee
Mary C. Choksi	Dated: September 6, 2019
EDITH E. HOLIDAY*	Trustee
Edith E. Holiday	Dated: September 6, 2019
GREGORY E. JOHNSON*	Trustee
Gregory E. Johnson	Dated: September 6, 2019
RUPERT H. JOHNSON, JR.*	Trustee
Rupert H. Johnson, Jr.	Dated: September 6, 2019
J. MICHAEL LUTTIG*	Trustee
J. Michael Luttig	Dated: September 6, 2019
LARRY D. THOMPSON*	Trustee
Larry D. Thompson	Dated: September 6, 2019

*By /s/Steven J. Gray

Steven J. Gray

Attorney-in-Fact

(Pursuant to Powers of Attorney previously filed)

EXHIBIT INDEX

Index No.	Description of Exhibit
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase