<SEC-DOCUMENT>0001752724-20-042318-index.html : 20200228
<SEC-HEADER>0001752724-20-042318.hdr.sgml : 20200228
<ACCEPTANCE-DATETIME>20200228125422
ACCESSION NUMBER:		0001752724-20-042318
CONFORMED SUBMISSION TYPE:	NPORT-P
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20191231
FILED AS OF DATE:		20200228
PERIOD START:           	20191231

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PIONEER SERIES TRUST XI
		CENTRAL INDEX KEY:			0000078758
		IRS NUMBER:				042458787
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		NPORT-P
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-01835
		FILM NUMBER:		20667878

	BUSINESS ADDRESS:	
		STREET 1:		60 STATE ST
		STREET 2:		19TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109
		BUSINESS PHONE:		6174224960

	MAIL ADDRESS:	
		STREET 1:		60 STATE STREET, 13TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109-1820

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PIONEER VALUE FUND
		DATE OF NAME CHANGE:	20010402

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PIONEER II
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PIONEER II INC
		DATE OF NAME CHANGE:	19851112
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000078758
<SERIES-ID>S000010136
<SERIES-NAME>Pioneer Core Equity Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000028137
<CLASS-CONTRACT-NAME>Pioneer Core Equity Fund: Class A
<CLASS-CONTRACT-TICKER-SYMBOL>PIOTX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000028139
<CLASS-CONTRACT-NAME>Pioneer Core Equity Fund: Class C
<CLASS-CONTRACT-TICKER-SYMBOL>PCOTX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000028140
<CLASS-CONTRACT-NAME>Pioneer Core Equity Fund: Class Y
<CLASS-CONTRACT-TICKER-SYMBOL>PVFYX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000202493
<CLASS-CONTRACT-NAME>Pioneer Core Equity Fund: Class K
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000203260
<CLASS-CONTRACT-NAME>Pioneer Core Equity Fund: Class R
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>NPORT-P
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
</SEC-DOCUMENT>