Thornburg Investment Income Builder Fund

S000011851THORNBURG INVESTMENT TRUSTCIK 0000816153

Share classes

7 classes of this one portfolio · 0 exchange-listed

Class ID	Symbol	Status	Security in the master	Type
C000032380	TIBAX	NOT_LISTED	not exchange-listed	—
C000032381	TIBCX	NOT_LISTED	not exchange-listed	—
C000058461	TIBGX	NOT_LISTED	not exchange-listed	—
C000032382	TIBIX	NOT_LISTED	not exchange-listed	—
C000047041	TIBMX	NOT_LISTED	not exchange-listed	—
C000177479	TIBOX	NOT_LISTED	not exchange-listed	—
C000042675	TIBRX	NOT_LISTED	not exchange-listed	—

The share-class bridge is a snapshot, not history. The SEC's fund share-class file says what each class trades as today, not what it traded as at a past report date. A fund that changed ticker or converted from a mutual fund resolves to its present-day symbol for every historical month shown.

Share classes

Report period

1 period filed. Holdings below describe the selected month only.

2026-03-31

Filing

NPORT-P · filed 2026-05-26

Report date: 2026-03-31
Net assets: $21,096,933,665.91
Total assets: $21,186,318,957.52
Total liabilities: $89,385,291.61
Assets invested: $0
Cash not reported in C or D: $3,140,681.95
Amendment: No
Accession: 0001410368-26-051176

By asset category

N-PORT Item C.4.a

ECEquity - common$19.65B93.3%

DBTDebt$836.09M4.0%

ABS-MBSAsset-backed: mortgage-ba…$267.88M1.3%

ABS-OAsset-backed: other$197.40M0.9%

By asset category

By issuer category

N-PORT Item C.4.b

CORPCorporate$19.72B93.7%

RFRegistered fund$1.21B5.7%

OTHEROther; the filer describe…$75.07M0.4%

USGAUS government agency$34.97M0.2%

NUSSNon-US sovereign$11.44M0.1%

By issuer category

By investment country

as filed

USUS$6.23B31.4%

FRFR$3.40B17.2%

GBGB$2.50B12.6%

NLNL$1.32B6.7%

DEDE$1.29B6.5%

TWTW$1.02B5.1%

ITIT$1.01B5.1%

CHCH$723.09M3.6%

KRKR$646.70M3.3%

CACA$618.52M3.1%

ESES$551.19M2.8%

IEIE$505.61M2.6%

By country

Classification look-through

Positions resolved to the master through ISIN, then rolled up through the taxonomy. 27.8% of reported value reaches a classification.

Not resolved to the master(310)$15.19B72.2%

Equity · Financials(6)$1.54B7.3%

Equity · Energy(4)$1.34B6.4%

Equity · Health Care(5)$1.04B4.9%

Equity · Information Technology(2)$830.91M3.9%

Equity · Communication Services(1)$782.81M3.7%

Equity · Consumer Discretionary(1)$166.25M0.8%

Equity · Materials(1)$72.03M0.3%

Equity · Real Estate(1)$65.23M0.3%

Equity · Industrials(1)$29.45M0.1%

Classification covers part of the master. 5,771 of 13,106 active securities are classified. Anything unclassified is shown as its own band rather than dropped, so a look-through total that falls short of 100% is telling you about coverage, not about the fund.

Percentages are of the reported value of positions above ($21.05B), not of the fund’s net assets ($21.10B). The two differ by cash, derivatives filed with no market value, and rounding.

Classification look-through

Holdings

332 positions in this filing

Issuer nameAsset categoryIssuer category

Holdings

Issuer↕	In master	CUSIP / ISIN	Asset	Balance↕	Value↕	Weight▼	Country
Wells Fargo Mortgage Backed Securities Trust Wells Fargo Mortgage Backed Securities 2021-I…	—	95003KBL5 US95003KBL52	ABS-MBS CORP	3,170,530.58 PA	$2.70M	0.013%	US
Flagstar Mortgage Trust Flagstar Mortgage Trust 2021-13INV	—	33853HBG5 US33853HBG56	ABS-MBS CORP	3,911,112.55 PA	$2.70M	0.013%	US
Cogent IPv4 LLC Cogent Ipv4 LLC	—	19240JAA6 US19240JAA60	ABS-O CORP	2,598,000 PA	$2.68M	0.013%	US
GREYSTAR REAL ESTATE PAR Greystar Real Estate Partners LLC	—	39807UAD8 US39807UAD81	DBT CORP	2,490,000 PA	$2.60M	0.012%	US
BLUE OWL CREDIT INCOME Blue Owl Credit Income Corp	—	69120VAP6 US69120VAP67	DBT CORP	2,500,000 PA	$2.54M	0.012%	US
JP Morgan Mortgage Trust JP Morgan Mortgage Trust 2022-2	—	46655DCR1 US46655DCR17	ABS-MBS CORP	3,053,283.61 PA	$2.49M	0.012%	US
FAIR ISAAC CORP Fair Isaac Corp	—	303250AJ3 US303250AJ38	DBT CORP	2,364,000 PA	$2.32M	0.011%	US
Morgan Stanley	—	61747S504 US61747S5047	EP CORP	120,000 NS	$2.27M	0.011%	US
JP Morgan Mortgage Trust JP Morgan Mortgage Trust 2021-11	—	46654KCH8 US46654KCH86	ABS-MBS CORP	3,956,128.42 PA	$2.08M	0.010%	US
Flagstar Mortgage Trust Flagstar Mortgage Trust 2020-2	—	33851KCA2 US33851KCA25	ABS-MBS CORP	2,333,685.9 PA	$2.07M	0.010%	US
Wells Fargo Mortgage Backed Securities Trust Wells Fargo Mortgage Backed Securities 2021-I…	—	95003KBM3 US95003KBM36	ABS-MBS CORP	2,445,837.87 PA	$2.03M	0.010%	US
Flagship Credit Auto Trust Flagship Credit Auto Trust 2019-3	—	33846A106 US33846A1060	ABS-O CORP	60,000 PA	$2.02M	0.010%	US
SG Capital Partners SG Residential Mortgage Trust 2019-3	—	78432BAN9 US78432BAN91	ABS-MBS CORP	36,851,794.42 PA	$2.01M	0.010%	US
WE SODA INV HOLDING PLC WE Soda Investments Holding PLC	—	92943TAA1 US92943TAA16	DBT CORP	2,000,000 PA	$2.00M	0.009%	GB
JP Morgan Mortgage Trust JP Morgan Mortgage Trust 2022-3	—	46654UCW3 US46654UCW36	ABS-MBS CORP	2,503,742.39 PA	$1.97M	0.009%	US
BANK OF NY MELLON CORP Bank of New York Mellon Corp/The	—	064058AF7 US064058AF75	DBT CORP	1,935,000 PA	$1.93M	0.009%	US
JP Morgan Mortgage Trust JP Morgan Mortgage Trust 2020-7	—	46591XCK9 US46591XCK90	ABS-MBS CORP	2,187,423.01 PA	$1.91M	0.009%	US
GS Mortgage-Backed Securities Trust GS Mortgage-Backed Securities Trust 2020-INV1	—	36258KAQ1 US36258KAQ13	ABS-MBS CORP	13,800,974.04 PA	$1.90M	0.009%	US
Flagstar Mortgage Trust Flagstar Mortgage Trust 2021-13INV	—	33853HBE0 US33853HBE09	ABS-MBS CORP	2,272,481.62 PA	$1.88M	0.009%	US
Carvana Auto Receivables Trust Carvana Auto Receivables Trust 2021-P4	—	14687KAK2 US14687KAK25	ABS-O CORP	17,500 PA	$1.79M	0.008%	US
Citigroup Mortgage Loan Trust Inc Citigroup Mortgage Loan Trust 2020-EXP1	—	17328JAF4 US17328JAF49	ABS-MBS CORP	2,150,000 PA	$1.78M	0.008%	US
Flagstar Mortgage Trust Flagstar Mortgage Trust 2020-2	—	33851KCB0 US33851KCB08	ABS-MBS CORP	3,069,674.37 PA	$1.78M	0.008%	US
United Auto Credit Securitization Trust United Auto Credit Securitization Trust 2022-1	—	90944DAL5 US90944DAL55	ABS-O CORP	37,000 PA	$1.76M	0.008%	US
Goldman Home Improvement Trust Issuer Trust Goldman Home Improvement Trust 2021-GRN2 Issu…	—	38149XAE9 US38149XAE94	ABS-O CORP	42,000 PA	$1.63M	0.008%	US
JP Morgan Mortgage Trust JP Morgan Mortgage Trust 2020-4	—	46652FCD0 US46652FCD06	ABS-MBS CORP	1,777,463.11 PA	$1.58M	0.007%	US
OFFICE CHERIFIEN DES PHO OCP SA	—	67091TAD7 US67091TAD72	DBT CORP	1,735,000 PA	$1.58M	0.007%	MA
Sequoia Mortgage Trust Sequoia Mortgage Trust 2017-7	—	81746GCD3 US81746GCD34	ABS-MBS CORP	1,751,963.89 PA	$1.57M	0.007%	US
GS Mortgage-Backed Securities Trust GS Mortgage-Backed Securities Trust 2020-INV1	—	36258KBP2 US36258KBP21	ABS-MBS CORP	1,735,353.36 PA	$1.54M	0.007%	US
GS Mortgage-Backed Securities Trust GS Mortgage-Backed Securities Trust 2020-INV1	—	36258KBN7 US36258KBN72	ABS-MBS CORP	1,731,255.43 PA	$1.53M	0.007%	US
FORESEA HOLDING SA FORESEA Holding SA	—	262051AA3 US262051AA36	DBT CORP	1,520,371 PA	$1.49M	0.007%	LU
Residential Mortgage Loan Trust Residential Mortgage Loan Trust 2019-3	—	76119NAE7 US76119NAE76	ABS-MBS CORP	1,500,000 PA	$1.46M	0.007%	US
Flagstar Mortgage Trust Flagstar Mortgage Trust 2021-13INV	—	33853HBM2 US33853HBM25	ABS-MBS CORP	145,775,589.51 PA	$1.44M	0.007%	US
Century De Buyer LLC Century De Buyer LLC 2025 Term Loan B	—	15651FAE6 US15651FAE60	LON CORP	1,477,612.32 PA	$1.43M	0.007%	US
GOTO GROUP INC GoTo Group Inc	—	38349YAA3 US38349YAA38	DBT CORP	1,828,827 PA	$1.43M	0.007%	US
FIDELITY NATL FINANCIAL Fidelity National Financial Inc	—	31620RAK1 US31620RAK14	DBT CORP	1,617,000 PA	$1.43M	0.007%	US
CIM Trust CIM Trust 2020-J2	—	12568PBA0 US12568PBA03	ABS-MBS CORP	91,980,190.43 PA	$1.34M	0.006%	US
Mosaic Solar Loans LLC Mosaic Solar Loan Trust 2020-2	—	61946PAE3 US61946PAE34	ABS-O CORP	6,374,936.83 PA	$1.26M	0.006%	US
CIM Trust CIM Trust 2020-J2	—	12568PCM3 US12568PCM32	ABS-MBS CORP	98,425,159.58 PA	$1.19M	0.006%	US
New Residential Mortgage Loan Trust New Residential Mortgage Loan Trust 2021-INV1	—	64829WBB9 US64829WBB90	ABS-MBS CORP	1,825,769.58 PA	$1.18M	0.006%	US
Mosaic Solar Loans LLC Mosaic Solar Loan Trust 2021-1	—	61947DAE9 US61947DAE94	ABS-O CORP	8,500,000 PA	$1.18M	0.006%	US
JP Morgan Mortgage Trust JP Morgan Mortgage Trust 2020-7	—	46591XCM5 US46591XCM56	ABS-MBS CORP	2,260,779.32 PA	$1.17M	0.006%	US
CIM Trust CIM Trust 2020-J1	—	12559YAT2 US12559YAT29	ABS-MBS CORP	41,867,108.48 PA	$1.16M	0.005%	US
Wells Fargo Mortgage Backed Securities Trust Wells Fargo Mortgage Backed Securities 2020-3…	—	95002TAW4 US95002TAW45	ABS-MBS CORP	128,013,178.92 PA	$1.15M	0.005%	US
Citigroup Mortgage Loan Trust Inc Citigroup Mortgage Loan Trust 2020-EXP1	—	17328JAG2 US17328JAG22	ABS-MBS CORP	1,450,000 PA	$1.15M	0.005%	US
CIM Trust CIM Trust 2020-J1	—	12559YBK0 US12559YBK01	ABS-MBS CORP	1,247,478.38 PA	$1.09M	0.005%	US
Carvana Auto Receivables Trust Carvana Auto Receivables Trust 2021-P2	—	14687TAJ6 US14687TAJ60	ABS-O CORP	8,000 PA	$1.06M	0.005%	US
Mello Mortgage Capital Acceptance Trust Mello Mortgage Capital Acceptance 2021-INV3	—	585491BZ5 US585491BZ53	ABS-MBS CORP	1,837,413.34 PA	$1.06M	0.005%	US
JP Morgan Mortgage Trust JP Morgan Mortgage Trust 2022-2	—	46655DCS9 US46655DCS99	ABS-MBS CORP	1,621,773.79 PA	$1.05M	0.005%	US
JP Morgan Mortgage Trust JP Morgan Mortgage Trust 2020-7	—	46591XCL7 US46591XCL73	ABS-MBS CORP	1,552,763.19 PA	$1.03M	0.005%	US
CIM Trust CIM Trust 2020-J1	—	12559YAS4 US12559YAS46	ABS-MBS CORP	46,940,517.03 PA	$1.01M	0.005%	US

Issuer↕

In master

CUSIP / ISIN

Asset

Balance↕

Value↕

Weight▼

Country

Wells Fargo Mortgage Backed Securities Trust

Wells Fargo Mortgage Backed Securities 2021-I…

—

95003KBL5

US95003KBL52

ABS-MBS

CORP

3,170,530.58 PA

$2.70M

0.013%

Flagstar Mortgage Trust

Flagstar Mortgage Trust 2021-13INV

—

33853HBG5

US33853HBG56

ABS-MBS

CORP

3,911,112.55 PA

$2.70M

0.013%

Cogent IPv4 LLC

Cogent Ipv4 LLC

—

19240JAA6

US19240JAA60

ABS-O

CORP

2,598,000 PA

$2.68M

0.013%

GREYSTAR REAL ESTATE PAR

Greystar Real Estate Partners LLC

—

39807UAD8

US39807UAD81

DBT

CORP

2,490,000 PA

$2.60M

0.012%

BLUE OWL CREDIT INCOME

Blue Owl Credit Income Corp

—

69120VAP6

US69120VAP67

DBT

CORP

2,500,000 PA

$2.54M

0.012%

JP Morgan Mortgage Trust

JP Morgan Mortgage Trust 2022-2

—

46655DCR1

US46655DCR17

ABS-MBS

CORP

3,053,283.61 PA

$2.49M

0.012%

FAIR ISAAC CORP

Fair Isaac Corp

—

303250AJ3

US303250AJ38

DBT

CORP

2,364,000 PA

$2.32M

0.011%

Morgan Stanley

—

61747S504

US61747S5047

CORP

120,000 NS

$2.27M

0.011%

JP Morgan Mortgage Trust

JP Morgan Mortgage Trust 2021-11

—

46654KCH8

US46654KCH86

ABS-MBS

CORP

3,956,128.42 PA

$2.08M

0.010%

Flagstar Mortgage Trust

Flagstar Mortgage Trust 2020-2

—

33851KCA2

US33851KCA25

ABS-MBS

CORP

2,333,685.9 PA

$2.07M

0.010%

Wells Fargo Mortgage Backed Securities Trust

Wells Fargo Mortgage Backed Securities 2021-I…

—

95003KBM3

US95003KBM36

ABS-MBS

CORP

2,445,837.87 PA

$2.03M

0.010%

Flagship Credit Auto Trust

Flagship Credit Auto Trust 2019-3

—

33846A106

US33846A1060

ABS-O

CORP

60,000 PA

$2.02M

0.010%

SG Capital Partners

SG Residential Mortgage Trust 2019-3

—

78432BAN9

US78432BAN91

ABS-MBS

CORP

36,851,794.42 PA

$2.01M

0.010%

WE SODA INV HOLDING PLC

WE Soda Investments Holding PLC

—

92943TAA1

US92943TAA16

DBT

CORP

2,000,000 PA

$2.00M

0.009%

JP Morgan Mortgage Trust

JP Morgan Mortgage Trust 2022-3

—

46654UCW3

US46654UCW36

ABS-MBS

CORP

2,503,742.39 PA

$1.97M

0.009%

BANK OF NY MELLON CORP

Bank of New York Mellon Corp/The

—

064058AF7

US064058AF75

DBT

CORP

1,935,000 PA

$1.93M

0.009%

JP Morgan Mortgage Trust

JP Morgan Mortgage Trust 2020-7

—

46591XCK9

US46591XCK90

ABS-MBS

CORP

2,187,423.01 PA

$1.91M

0.009%

GS Mortgage-Backed Securities Trust

GS Mortgage-Backed Securities Trust 2020-INV1

—

36258KAQ1

US36258KAQ13

ABS-MBS

CORP

13,800,974.04 PA

$1.90M

0.009%

Flagstar Mortgage Trust

Flagstar Mortgage Trust 2021-13INV

—

33853HBE0

US33853HBE09

ABS-MBS

CORP

2,272,481.62 PA

$1.88M

0.009%

Carvana Auto Receivables Trust

Carvana Auto Receivables Trust 2021-P4

—

14687KAK2

US14687KAK25

ABS-O

CORP

17,500 PA

$1.79M

0.008%

Citigroup Mortgage Loan Trust Inc

Citigroup Mortgage Loan Trust 2020-EXP1

—

17328JAF4

US17328JAF49

ABS-MBS

CORP

2,150,000 PA

$1.78M

0.008%

Flagstar Mortgage Trust

Flagstar Mortgage Trust 2020-2

—

33851KCB0

US33851KCB08

ABS-MBS

CORP

3,069,674.37 PA

$1.78M

0.008%

United Auto Credit Securitization Trust

United Auto Credit Securitization Trust 2022-1

—

90944DAL5

US90944DAL55

ABS-O

CORP

37,000 PA

$1.76M

0.008%

Goldman Home Improvement Trust Issuer Trust

Goldman Home Improvement Trust 2021-GRN2 Issu…

—

38149XAE9

US38149XAE94

ABS-O

CORP

42,000 PA

$1.63M

0.008%

JP Morgan Mortgage Trust

JP Morgan Mortgage Trust 2020-4

—

46652FCD0

US46652FCD06

ABS-MBS

CORP

1,777,463.11 PA

$1.58M

0.007%

OFFICE CHERIFIEN DES PHO

OCP SA

—

67091TAD7

US67091TAD72

DBT

CORP

1,735,000 PA

$1.58M

0.007%

Sequoia Mortgage Trust

Sequoia Mortgage Trust 2017-7

—

81746GCD3

US81746GCD34

ABS-MBS

CORP

1,751,963.89 PA

$1.57M

0.007%

GS Mortgage-Backed Securities Trust

GS Mortgage-Backed Securities Trust 2020-INV1

—

36258KBP2

US36258KBP21

ABS-MBS

CORP

1,735,353.36 PA

$1.54M

0.007%

GS Mortgage-Backed Securities Trust

GS Mortgage-Backed Securities Trust 2020-INV1

—

36258KBN7

US36258KBN72

ABS-MBS

CORP

1,731,255.43 PA

$1.53M

0.007%

FORESEA HOLDING SA

FORESEA Holding SA

—

262051AA3

US262051AA36

DBT

CORP

1,520,371 PA

$1.49M

0.007%

Residential Mortgage Loan Trust

Residential Mortgage Loan Trust 2019-3

—

76119NAE7

US76119NAE76

ABS-MBS

CORP

1,500,000 PA

$1.46M

0.007%

Flagstar Mortgage Trust

Flagstar Mortgage Trust 2021-13INV

—

33853HBM2

US33853HBM25

ABS-MBS

CORP

145,775,589.51 PA

$1.44M

0.007%

Century De Buyer LLC

Century De Buyer LLC 2025 Term Loan B

—

15651FAE6

US15651FAE60

LON

CORP

1,477,612.32 PA

$1.43M

0.007%

GOTO GROUP INC

GoTo Group Inc

—

38349YAA3

US38349YAA38

DBT

CORP

1,828,827 PA

$1.43M

0.007%

FIDELITY NATL FINANCIAL

Fidelity National Financial Inc

—

31620RAK1

US31620RAK14

DBT

CORP

1,617,000 PA

$1.43M

0.007%

CIM Trust

CIM Trust 2020-J2

—

12568PBA0

US12568PBA03

ABS-MBS

CORP

91,980,190.43 PA

$1.34M

0.006%

Mosaic Solar Loans LLC

Mosaic Solar Loan Trust 2020-2

—

61946PAE3

US61946PAE34

ABS-O

CORP

6,374,936.83 PA

$1.26M

0.006%

CIM Trust

CIM Trust 2020-J2

—

12568PCM3

US12568PCM32

ABS-MBS

CORP

98,425,159.58 PA

$1.19M

0.006%

New Residential Mortgage Loan Trust

New Residential Mortgage Loan Trust 2021-INV1

—

64829WBB9

US64829WBB90

ABS-MBS

CORP

1,825,769.58 PA

$1.18M

0.006%

Mosaic Solar Loans LLC

Mosaic Solar Loan Trust 2021-1

—

61947DAE9

US61947DAE94

ABS-O

CORP

8,500,000 PA

$1.18M

0.006%

JP Morgan Mortgage Trust

JP Morgan Mortgage Trust 2020-7

—

46591XCM5

US46591XCM56

ABS-MBS

CORP

2,260,779.32 PA

$1.17M

0.006%

CIM Trust

CIM Trust 2020-J1

—

12559YAT2

US12559YAT29

ABS-MBS

CORP

41,867,108.48 PA

$1.16M

0.005%

Wells Fargo Mortgage Backed Securities Trust

Wells Fargo Mortgage Backed Securities 2020-3…

—

95002TAW4

US95002TAW45

ABS-MBS

CORP

128,013,178.92 PA

$1.15M

0.005%

Citigroup Mortgage Loan Trust Inc

Citigroup Mortgage Loan Trust 2020-EXP1

—

17328JAG2

US17328JAG22

ABS-MBS

CORP

1,450,000 PA

$1.15M

0.005%

CIM Trust

CIM Trust 2020-J1

—

12559YBK0

US12559YBK01

ABS-MBS

CORP

1,247,478.38 PA

$1.09M

0.005%

Carvana Auto Receivables Trust

Carvana Auto Receivables Trust 2021-P2

—

14687TAJ6

US14687TAJ60

ABS-O

CORP

8,000 PA

$1.06M

0.005%

Mello Mortgage Capital Acceptance Trust

Mello Mortgage Capital Acceptance 2021-INV3

—

585491BZ5

US585491BZ53

ABS-MBS

CORP

1,837,413.34 PA

$1.06M

0.005%

JP Morgan Mortgage Trust

JP Morgan Mortgage Trust 2022-2

—

46655DCS9

US46655DCS99

ABS-MBS

CORP

1,621,773.79 PA

$1.05M

0.005%

JP Morgan Mortgage Trust

JP Morgan Mortgage Trust 2020-7

—

46591XCL7

US46591XCL73

ABS-MBS

CORP

1,552,763.19 PA

$1.03M

0.005%

CIM Trust

CIM Trust 2020-J1

—

12559YAS4

US12559YAS46

ABS-MBS

CORP

46,940,517.03 PA

$1.01M

0.005%