497

Exhibit Index

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

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Document Type	dei_DocumentType	497
Document Period End Date	dei_DocumentPeriodEndDate	Jun. 30, 2017
Registrant Name	dei_EntityRegistrantName	SPDR SERIES TRUST
Central Index Key	dei_EntityCentralIndexKey	0001064642
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Aug. 30, 2018
Document Effective Date	dei_DocumentEffectiveDate	Aug. 30, 2018
Prospectus Date	rr_ProspectusDate	Oct. 31, 2017

XML

Oct. 31, 2017

SPDR® Series Trust

SPDR Bloomberg Barclays International Treasury Bond ETF

(the “Fund”)

Supplement dated August 30, 2018 to the Prospectus and Statement of Additional Information (“SAI”) dated October 31, 2017, as supplemented

Effective September 4, 2018, SSGA Funds Management, Inc., the investment adviser to the Fund, has agreed to reduce the Fund’s management fee from 0.50% to 0.35% of the Fund’s average daily net assets. Accordingly, effective September 4, 2018, the fee table and example table in the “FEES AND EXPENSES OF THE FUND” section on page 97 of the Prospectus are deleted and replaced with the following:

FEES AND EXPENSES OF THE FUND

The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Fund Shares”). This table and the Example below reflect the expenses of the Fund and do not reflect brokerage commissions you may pay on purchases and sales of Fund Shares.

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment):

Management fees1	0.35	%
Distribution and service (12b-1) fees	None
Other expenses	0.00	%
Total annual Fund operating expenses1	0.35	%

¹  The Fund’s “Management fees” and “Total annual Fund operating expenses” have been restated to reflect a reduction in the Fund’s “Management fees.”

EXAMPLE:

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated, and then sell all of your Fund Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Year 1	Year 3	Year 5	Year 10
$    36	$  113	$  197	$  443

Additionally, effective September 4, 2018, all additional references in the Prospectus and SAI to the Fund’s management fee are revised as indicated above.

SPDR® Series Trust

SPDR Nuveen S&P High Yield Municipal Bond ETF

(the “Fund”)

Supplement dated August 30, 2018 to the Prospectus and Statement of Additional Information (“SAI”) dated October 31, 2017, as supplemented

Effective September 4, 2018, SSGA Funds Management, Inc., the investment adviser to the Fund, has agreed to reduce the Fund’s management fee from 0.50% to 0.35% of the Fund’s average daily net assets. Accordingly, effective September 4, 2018, the fee table and example table in the “FEES AND EXPENSES OF THE FUND” section on page 78 of the Prospectus are deleted and replaced with the following:

FEES AND EXPENSES OF THE FUND

The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Fund Shares”). This table and the Example below reflect the expenses of the Fund and do not reflect brokerage commissions you may pay on purchases and sales of Fund Shares.

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment):

Management fees1	0.35	%
Distribution and service (12b-1) fees	None
Other expenses	0.00	%
Total annual Fund operating expenses1	0.35	%

¹  The Fund’s “Management fees” and “Total annual Fund operating expenses” have been restated to reflect a reduction in the Fund’s “Management fees.”

EXAMPLE:

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated, and then sell all of your Fund Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Year 1	Year 3	Year 5	Year 10
$    36	$  113	$  197	$  443

Additionally, effective September 4, 2018, all additional references in the Prospectus and SAI to the Fund’s management fee are revised as indicated above.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

SPDR SERIES TRUST

Prospectus Date

rr_ProspectusDate

Oct. 31, 2017

Supplement [Text Block]

spdrst_SupplementTextBlock

SPDR® Series Trust

SPDR Bloomberg Barclays International Treasury Bond ETF

(the “Fund”)

Supplement dated August 30, 2018 to the Prospectus and Statement of Additional Information (“SAI”) dated October 31, 2017, as supplemented

Effective September 4, 2018, SSGA Funds Management, Inc., the investment adviser to the Fund, has agreed to reduce the Fund’s management fee from 0.50% to 0.35% of the Fund’s average daily net assets. Accordingly, effective September 4, 2018, the fee table and example table in the “FEES AND EXPENSES OF THE FUND” section on page 97 of the Prospectus are deleted and replaced with the following:

FEES AND EXPENSES OF THE FUND

The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Fund Shares”). This table and the Example below reflect the expenses of the Fund and do not reflect brokerage commissions you may pay on purchases and sales of Fund Shares.

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment):

Management fees1	0.35	%
Distribution and service (12b-1) fees	None
Other expenses	0.00	%
Total annual Fund operating expenses1	0.35	%

¹  The Fund’s “Management fees” and “Total annual Fund operating expenses” have been restated to reflect a reduction in the Fund’s “Management fees.”

EXAMPLE:

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated, and then sell all of your Fund Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Year 1	Year 3	Year 5	Year 10
$    36	$  113	$  197	$  443

Additionally, effective September 4, 2018, all additional references in the Prospectus and SAI to the Fund’s management fee are revised as indicated above.

SPDR® Series Trust

SPDR Nuveen S&P High Yield Municipal Bond ETF

(the “Fund”)

Supplement dated August 30, 2018 to the Prospectus and Statement of Additional Information (“SAI”) dated October 31, 2017, as supplemented

Effective September 4, 2018, SSGA Funds Management, Inc., the investment adviser to the Fund, has agreed to reduce the Fund’s management fee from 0.50% to 0.35% of the Fund’s average daily net assets. Accordingly, effective September 4, 2018, the fee table and example table in the “FEES AND EXPENSES OF THE FUND” section on page 78 of the Prospectus are deleted and replaced with the following:

FEES AND EXPENSES OF THE FUND

The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Fund Shares”). This table and the Example below reflect the expenses of the Fund and do not reflect brokerage commissions you may pay on purchases and sales of Fund Shares.

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment):

Management fees1	0.35	%
Distribution and service (12b-1) fees	None
Other expenses	0.00	%
Total annual Fund operating expenses1	0.35	%

¹  The Fund’s “Management fees” and “Total annual Fund operating expenses” have been restated to reflect a reduction in the Fund’s “Management fees.”

EXAMPLE:

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated, and then sell all of your Fund Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Year 1	Year 3	Year 5	Year 10
$    36	$  113	$  197	$  443

Additionally, effective September 4, 2018, all additional references in the Prospectus and SAI to the Fund’s management fee are revised as indicated above.

SPDR(R) Bloomberg Barclays International Treasury Bond ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement [Text Block]

spdrst_SupplementTextBlock

SPDR® Series Trust

SPDR Bloomberg Barclays International Treasury Bond ETF

(the “Fund”)

Supplement dated August 30, 2018 to the Prospectus and Statement of Additional Information (“SAI”) dated October 31, 2017, as supplemented

Effective September 4, 2018, SSGA Funds Management, Inc., the investment adviser to the Fund, has agreed to reduce the Fund’s management fee from 0.50% to 0.35% of the Fund’s average daily net assets. Accordingly, effective September 4, 2018, the fee table and example table in the “FEES AND EXPENSES OF THE FUND” section on page 97 of the Prospectus are deleted and replaced with the following:

FEES AND EXPENSES OF THE FUND

The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Fund Shares”). This table and the Example below reflect the expenses of the Fund and do not reflect brokerage commissions you may pay on purchases and sales of Fund Shares.

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment):

Management fees1	0.35	%
Distribution and service (12b-1) fees	None
Other expenses	0.00	%
Total annual Fund operating expenses1	0.35	%

¹  The Fund’s “Management fees” and “Total annual Fund operating expenses” have been restated to reflect a reduction in the Fund’s “Management fees.”

EXAMPLE:

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated, and then sell all of your Fund Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Year 1	Year 3	Year 5	Year 10
$    36	$  113	$  197	$  443

Additionally, effective September 4, 2018, all additional references in the Prospectus and SAI to the Fund’s management fee are revised as indicated above.

Expense [Heading]

rr_ExpenseHeading

FEES AND EXPENSES OF THE FUND

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Fund Shares”). This table and the Example below reflect the expenses of the Fund and do not reflect brokerage commissions you may pay on purchases and sales of Fund Shares.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment):

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

This table and the Example below reflect the expenses of the Fund and do not reflect brokerage commissions you may pay on purchases and sales of Fund Shares.

Expenses Restated to Reflect Current [Text]

rr_ExpensesRestatedToReflectCurrent

The Fund’s “Management fees” and “Total annual Fund operating expenses” have been restated to reflect a reduction in the Fund’s “Management fees.”

Expense Example [Heading]

rr_ExpenseExampleHeading

EXAMPLE:

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated, and then sell all of your Fund Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

SPDR(R) Bloomberg Barclays International Treasury Bond ETF | SPDR(R) Bloomberg Barclays International Treasury Bond ETF

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

0.35%

^[1]

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Total annual Fund operating expenses

rr_ExpensesOverAssets

0.35%

^[1]

Year 1

rr_ExpenseExampleYear01

$ 36

Year 3

rr_ExpenseExampleYear03

113

Year 5

rr_ExpenseExampleYear05

197

Year 10

rr_ExpenseExampleYear10

$ 443

SPDR(R) Nuveen S&P(R) High Yield Municipal Bond ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement [Text Block]

spdrst_SupplementTextBlock

SPDR® Series Trust

SPDR Nuveen S&P High Yield Municipal Bond ETF

(the “Fund”)

Supplement dated August 30, 2018 to the Prospectus and Statement of Additional Information (“SAI”) dated October 31, 2017, as supplemented

Effective September 4, 2018, SSGA Funds Management, Inc., the investment adviser to the Fund, has agreed to reduce the Fund’s management fee from 0.50% to 0.35% of the Fund’s average daily net assets. Accordingly, effective September 4, 2018, the fee table and example table in the “FEES AND EXPENSES OF THE FUND” section on page 78 of the Prospectus are deleted and replaced with the following:

FEES AND EXPENSES OF THE FUND

The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Fund Shares”). This table and the Example below reflect the expenses of the Fund and do not reflect brokerage commissions you may pay on purchases and sales of Fund Shares.

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment):

Management fees1	0.35	%
Distribution and service (12b-1) fees	None
Other expenses	0.00	%
Total annual Fund operating expenses1	0.35	%

¹  The Fund’s “Management fees” and “Total annual Fund operating expenses” have been restated to reflect a reduction in the Fund’s “Management fees.”

EXAMPLE:

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated, and then sell all of your Fund Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Year 1	Year 3	Year 5	Year 10
$    36	$  113	$  197	$  443

Additionally, effective September 4, 2018, all additional references in the Prospectus and SAI to the Fund’s management fee are revised as indicated above.

Expense [Heading]

rr_ExpenseHeading

FEES AND EXPENSES OF THE FUND

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Fund Shares”). This table and the Example below reflect the expenses of the Fund and do not reflect brokerage commissions you may pay on purchases and sales of Fund Shares.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment):

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

This table and the Example below reflect the expenses of the Fund and do not reflect brokerage commissions you may pay on purchases and sales of Fund Shares.

Expenses Restated to Reflect Current [Text]

rr_ExpensesRestatedToReflectCurrent

The Fund’s “Management fees” and “Total annual Fund operating expenses” have been restated to reflect a reduction in the Fund’s “Management fees.”

Expense Example [Heading]

rr_ExpenseExampleHeading

EXAMPLE:

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated, and then sell all of your Fund Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

SPDR(R) Nuveen S&P(R) High Yield Municipal Bond ETF | SPDR(R) Nuveen S&P(R) High Yield Municipal Bond ETF

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

0.35%

^[1]

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

Total annual Fund operating expenses

rr_ExpensesOverAssets

0.35%

^[1]

Year 1

rr_ExpenseExampleYear01

$ 36

Year 3

rr_ExpenseExampleYear03

113

Year 5

rr_ExpenseExampleYear05

197

Year 10

rr_ExpenseExampleYear10

$ 443

[1] The Fund’s “Management fees” and “Total annual Fund operating expenses” have been restated to reflect a reduction in the Fund’s “Management fees.”

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	SPDR SERIES TRUST
Prospectus Date	rr_ProspectusDate	Oct. 31, 2017
Document Creation Date	dei_DocumentCreationDate	Aug. 30, 2018