Fidelity SAI High Income Fund

S000071838Fidelity Summer Street TrustCIK 0000225322

Share classes

1 class of this one portfolio · 0 exchange-listed

Class ID	Symbol	Status	Security in the master	Type
C000227362	FSHGX	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.

Report period

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

2026-04-30

Filing

NPORT-P · filed 2026-06-26

Report date: 2026-04-30
Net assets: $2,631,210,964.11
Total assets: $2,942,383,886.16
Total liabilities: $311,172,922.05
Assets invested: $0
Cash not reported in C or D: $0
Amendment: No
Accession: 0000035402-26-004146

By asset category

N-PORT Item C.4.a

DBTDebt$2.14B73.5%

STIVShort-term investment veh…$405.77M13.9%

LONLoan$228.88M7.9%

EPEquity - preferred$72.69M2.5%

ECEquity - common$64.49M2.2%

ABS-CBDOAsset-backed: collaterali…$433.8K0.0%

By asset category

By issuer category

N-PORT Item C.4.b

CORPCorporate$2.41B82.6%

RFRegistered fund$447.99M15.4%

USTUS Treasury$60.40M2.1%

By issuer category

By investment country

as filed

USUS$2.50B86.7%

CACA$98.83M3.4%

LULU$52.49M1.8%

FRFR$44.37M1.5%

BMBM$40.02M1.4%

KYKY$39.52M1.4%

GBGB$34.67M1.2%

NLNL$18.42M0.6%

JEJE$15.52M0.5%

AUAU$13.96M0.5%

PAPA$13.35M0.5%

MTMT$10.94M0.4%

By country

Classification look-through

Positions resolved to the master through ISIN, then rolled up through the taxonomy. 0.2% of reported value reaches a classification.

Not resolved to the master(727)$2.91B99.8%

Equity · Health Care(2)$3.97M0.1%

Equity · Information Technology(1)$1.92M0.1%

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 ($2.92B), not of the fund’s net assets ($2.63B). The two differ by cash, derivatives filed with no market value, and rounding.

Classification look-through

Holdings

730 positions in this filing

Issuer nameAsset categoryIssuer category

Holdings

Issuer↕	In master	CUSIP / ISIN	Asset	Balance↕	Value↕	Weight▼	Country
Fidelity Revere Street Trust Fidelity Securities Lending Cash Central Fund	—	31635A303 US31635A3032	STIV RF	263,527,906 NS	$263.55M	10.016%	US
Fidelity Revere Street Trust Fidelity Cash Central Fund	—	31635A105 US31635A1051	STIV RF	142,191,639.23 NS	$142.22M	5.405%	US
UST NOTES UST NOTES 4% 02/15/2034	—	91282CJZ5 US91282CJZ59	DBT UST	55,252,000 PA	$54.27M	2.063%	US
Fidelity Private Credit Central Fund LLC Fidelity Private Credit Company LLC	—	316129105 US3161291055	EC RF	4,507,058.84 NS	$42.22M	1.604%	US
NEW FORTRESS ENERGY INC NEW FORTRESS ENERGY TERM B 1LN 10/30/2028	—	— US64439HAC34	LON CORP	27,593,405.05 PA	$17.76M	0.675%	US
1261229 BC LTD BAUSCH HEALTH TERM B 1LN 10/08/2030	—	— XAC6903HAB06	LON CORP	17,794,931.5 PA	$17.30M	0.658%	CA
UNITED PF HOLDINGS LLC UNITED PLANET FITNESS TERM 1LN 12/30/2026	—	91132UAG8 US91132UAG85	LON CORP	14,636,606.32 PA	$14.01M	0.533%	US
ARTERA SERVICES LLC ARTERA SERVICES LLC 8.5% 02/15/2031 144A	—	04302XAA2 US04302XAA28	DBT CORP	16,243,000 PA	$13.99M	0.532%	US
PG and E CORP PG and E CORP 5.25% 07/01/2030	—	69331CAJ7 US69331CAJ71	DBT CORP	14,130,000 PA	$13.99M	0.532%	US
COREWEAVE INC COREWEAVE INC 9% 02/01/2031 144A	—	21873SAC2 US21873SAC26	DBT CORP	13,845,000 PA	$13.76M	0.523%	US
CSC SERVICEWORKS EAST LLC CSC SERVICEWORKS TERM Exchange FLSO TL 1LN 09…	—	22946QAC7 US22946QAC78	LON CORP	18,805,956.1 PA	$13.01M	0.495%	US
ORACLE CORP ORACLE CORP 3.6% 04/01/2040	—	68389XBW4 US68389XBW48	DBT CORP	17,954,000 PA	$12.95M	0.492%	US
MPT OPER PARTNERSHIP LP / MPT FIN CORP MPT OPER PARTNERSHIP LP/CORP 5% 10/15/2027	—	55342UAH7 US55342UAH77	DBT CORP	12,746,000 PA	$12.43M	0.472%	US
ENTEGRIS INC ENTEGRIS INC 5.95% 06/15/2030 144A	—	29365BAB9 US29365BAB99	DBT CORP	12,275,000 PA	$12.43M	0.472%	US
PR RNO PROPERTY OWNER 1 LLC PR RNO PROPERTY OWNER 1 LLC 6.5% 05/01/2031 1…	—	69393LAA1 US69393LAA17	DBT CORP	12,535,000 PA	$12.42M	0.472%	US
APLD COMPUTECO LLC APLD COMPUTECO LLC 9.25% 12/15/2030 144A	—	00202DAA5 US00202DAA54	DBT CORP	11,504,000 PA	$12.37M	0.470%	US
ICAHN ENTERPRISES LP / ICAHN ENTERPRISES FINA… ICAHN ENTERPRISES LP / ICAHN ENTERPRISES FINA…	—	451102BZ9 US451102BZ91	DBT CORP	12,401,000 PA	$12.28M	0.467%	US
HERENS HOLDCO SARL HERENS HOLDCO SARL 4.75% 05/15/2028 144A	—	427169AA5 US427169AA59	DBT CORP	12,965,000 PA	$11.47M	0.436%	LU
CHS/CMNTY HEALTH SYSTEMS INC CHS/CMNTY HEALTH SYSTEMS INC 5.25% 05/15/2030…	—	12543DBM1 US12543DBM11	DBT CORP	11,925,000 PA	$11.26M	0.428%	US
REDFIN CORPORATION REDFIN CORP CONV 0.5% 04/01/2027	—	75737FAE8 US75737FAE88	DBT CORP	11,683,000 PA	$11.15M	0.424%	US
1261229 BC LTD 1261229 BC LTD 10% 04/15/2032 144A	—	68288AAA5 US68288AAA51	DBT CORP	10,425,000 PA	$10.77M	0.409%	CA
ALTICE FRANCE SA ALTICE FRANCE SA 6.5% 04/15/2032 144A	—	02090DAD0 US02090DAD03	DBT CORP	10,937,547 PA	$10.76M	0.409%	FR
WHIRLPOOL CORP WHIRLPOOL CORP 6.5% 06/15/2033	—	963320BE5 US963320BE54	DBT CORP	10,837,000 PA	$10.38M	0.394%	US
HUMANA INC HUMANA INC 6.625%/VAR 09/15/2056	—	444859CE0 US444859CE04	DBT CORP	10,023,000 PA	$9.88M	0.375%	US
VIKING CRUISES LTD VIKING CRUISES LTD 5.875% 10/15/2033 144A	—	92676XAH0 US92676XAH08	DBT CORP	9,710,000 PA	$9.73M	0.370%	BM
TULLOW HOLDCO 2 LTD TULLOW HOLDCO 2 LTD 15% 11/15/2028 144A	—	89941AAA0 US89941AAA07	DBT CORP	9,298,480.09 PA	$9.55M	0.363%	JE
LGI HOMES INC LGI HOMES INC 7% 11/15/2032 144A	—	50187TAK2 US50187TAK25	DBT CORP	9,913,000 PA	$9.50M	0.361%	US
GLOBAL AIRCRAFT LEASING CO LTD GLOBAL AIRCRAFT LEASING CO LTD 8.75% 09/01/20…	—	37960JAC2 US37960JAC27	DBT CORP	9,258,000 PA	$9.39M	0.357%	KY
STANDARD BUILDING SOLUTIONS INC STANDARD BUILDING SOLUTIONS INC 6.25% 08/01/2…	—	853191AC8 US853191AC80	DBT CORP	9,280,000 PA	$9.27M	0.352%	US
CORE SCIENTIFIC FINANCE I LLC CORE SCIENTIFIC FINANCE I LLC 7.75% 05/15/203…	—	21874LAA0 US21874LAA08	DBT CORP	9,195,000 PA	$9.17M	0.349%	US
FERTITTA ENTERTAINMENT LLC / FERTITTA ENTERTA… FERTITTA ENTERTAINMENT LLC / FERTITTA ENTERTA…	—	31556TAC3 US31556TAC36	DBT CORP	9,452,000 PA	$9.16M	0.348%	US
RIOT PLATFORMS INC RIOT PLATFORMS INC CONV 0.75% 01/15/2030	—	767292AB1 US767292AB16	DBT CORP	6,172,000 PA	$8.80M	0.335%	US
AIR LEASE CORP AIR LEASE CORP 4.125%/VAR PERP	—	00912XBK9 US00912XBK90	EP CORP	8,851,000 PA	$8.73M	0.332%	US
DISCOVERY PURCHASER CORPORATION ENVU TERM B 1LN 10/04/2029	—	25471NAC0 US25471NAC02	LON CORP	8,779,150 PA	$8.69M	0.330%	US
MOLINA HEALTHCARE INC MOLINA HEALTHCARE INC 6.25% 01/15/2033 144A	—	60855RAM2 US60855RAM25	DBT CORP	8,655,000 PA	$8.65M	0.329%	US
ASURION LLC AND ASURION CO-ISSUER INC ASURION LLC AND ASURION CO-ISSUER INC 8% 12/3…	—	045941AA9 US045941AA96	DBT CORP	8,255,000 PA	$8.62M	0.328%	US
HERENS US HOLDCO CORP LONZA SPECIALTY INGREDIENTS TERM B 1LN 07/03/…	—	— XAL4780EAC83	LON CORP	9,322,860.93 PA	$8.61M	0.327%	US
ADVANCION HOLDINGS LLC ANGUS CHEMICAL TERM B 1LN 11/24/2027	—	04317JAB4 US04317JAB44	LON CORP	9,305,349.87 PA	$8.47M	0.322%	US
KOSMOS ENERGY LTD KOSMOS ENERGY LTD CONV 3.125% 03/15/2030	—	500688AH9 US500688AH90	DBT CORP	10,100,000 PA	$8.46M	0.322%	US
UNITI GROUP LP / UNITI GROUP FINANCE INC / CS… UNITI GROUP LP / UNITI GROUP FINANCE INC / CS…	—	91327BAA8 US91327BAA89	DBT CORP	8,607,000 PA	$8.46M	0.321%	US
OLYMPUS WATER US HOLDING CORPORATION OLYMPUS WATER US HOLDING CORPORATION 7.25% 02…	—	681639AE0 US681639AE00	DBT CORP	8,600,000 PA	$8.41M	0.319%	US
COGENT COMMUNICATIONS GROUP INC / COGENT COMM… COGENT COMMUNICATIONS GROUP INC / COGENT COMM…	—	19240WAA7 US19240WAA71	DBT CORP	8,443,000 PA	$8.39M	0.319%	US
CARNIVAL CORP CARNIVAL CORP 6.125% 02/15/2033 144A	—	143658BX9 US143658BX94	DBT CORP	8,140,000 PA	$8.26M	0.314%	PA
HEXION HOLDINGS CORPORATION HEXION TERM 1LN 03/15/2029	—	00217XAE6 US00217XAE67	LON CORP	8,490,049.86 PA	$8.22M	0.312%	US
C and W SENIOR FINANCE LTD C and W SENIOR FINANCE LTD 9% 01/15/2033 144A	—	12665MAA0 US12665MAA09	DBT CORP	7,948,000 PA	$8.12M	0.309%	KY
MERIDIAN ARC HOLDCO LLC MERIDIAN ARC HOLDCO LLC 6.25% 04/30/2031 144A	—	58990CAA1 US58990CAA18	DBT CORP	8,105,000 PA	$8.10M	0.308%	US
STONEMOR INC STONEMOR INC 8.5% 05/15/2029 144A	—	86184WAA4 US86184WAA45	DBT CORP	8,193,000 PA	$8.09M	0.307%	US
CELANESE US HLDGS LLC CELANESE US HLDGS LLC 7.375% 02/15/2034	—	15089QBD5 US15089QBD51	DBT CORP	7,715,000 PA	$8.08M	0.307%	US
QUIKRETE HOLDINGS INC QUIKRETE HOLDINGS INC 6.375% 03/01/2032 144A	—	74843PAA8 US74843PAA84	DBT CORP	7,947,000 PA	$8.07M	0.307%	US
WAYFAIR LLC WAYFAIR LLC 7.75% 09/15/2030 144A	—	94419NAB3 US94419NAB38	DBT CORP	7,748,000 PA	$8.04M	0.306%	US

Issuer↕

In master

CUSIP / ISIN

Asset

Balance↕

Value↕

Weight▼

Country

Fidelity Revere Street Trust

Fidelity Securities Lending Cash Central Fund

—

31635A303

US31635A3032

STIV

263,527,906 NS

$263.55M

10.016%

Fidelity Revere Street Trust

Fidelity Cash Central Fund

—

31635A105

US31635A1051

STIV

142,191,639.23 NS

$142.22M

5.405%

UST NOTES

UST NOTES 4% 02/15/2034

—

91282CJZ5

US91282CJZ59

DBT

UST

55,252,000 PA

$54.27M

2.063%

Fidelity Private Credit Central Fund LLC

Fidelity Private Credit Company LLC

—

316129105

US3161291055

4,507,058.84 NS

$42.22M

1.604%

NEW FORTRESS ENERGY INC

NEW FORTRESS ENERGY TERM B 1LN 10/30/2028

—

US64439HAC34

LON

CORP

27,593,405.05 PA

$17.76M

0.675%

1261229 BC LTD

BAUSCH HEALTH TERM B 1LN 10/08/2030

—

XAC6903HAB06

LON

CORP

17,794,931.5 PA

$17.30M

0.658%

UNITED PF HOLDINGS LLC

UNITED PLANET FITNESS TERM 1LN 12/30/2026

—

91132UAG8

US91132UAG85

LON

CORP

14,636,606.32 PA

$14.01M

0.533%

ARTERA SERVICES LLC

ARTERA SERVICES LLC 8.5% 02/15/2031 144A

—

04302XAA2

US04302XAA28

DBT

CORP

16,243,000 PA

$13.99M

0.532%

PG and E CORP

PG and E CORP 5.25% 07/01/2030

—

69331CAJ7

US69331CAJ71

DBT

CORP

14,130,000 PA

$13.99M

0.532%

COREWEAVE INC

COREWEAVE INC 9% 02/01/2031 144A

—

21873SAC2

US21873SAC26

DBT

CORP

13,845,000 PA

$13.76M

0.523%

CSC SERVICEWORKS EAST LLC

CSC SERVICEWORKS TERM Exchange FLSO TL 1LN 09…

—

22946QAC7

US22946QAC78

LON

CORP

18,805,956.1 PA

$13.01M

0.495%

ORACLE CORP

ORACLE CORP 3.6% 04/01/2040

—

68389XBW4

US68389XBW48

DBT

CORP

17,954,000 PA

$12.95M

0.492%

MPT OPER PARTNERSHIP LP / MPT FIN CORP

MPT OPER PARTNERSHIP LP/CORP 5% 10/15/2027

—

55342UAH7

US55342UAH77

DBT

CORP

12,746,000 PA

$12.43M

0.472%

ENTEGRIS INC

ENTEGRIS INC 5.95% 06/15/2030 144A

—

29365BAB9

US29365BAB99

DBT

CORP

12,275,000 PA

$12.43M

0.472%

PR RNO PROPERTY OWNER 1 LLC

PR RNO PROPERTY OWNER 1 LLC 6.5% 05/01/2031 1…

—

69393LAA1

US69393LAA17

DBT

CORP

12,535,000 PA

$12.42M

0.472%

APLD COMPUTECO LLC

APLD COMPUTECO LLC 9.25% 12/15/2030 144A

—

00202DAA5

US00202DAA54

DBT

CORP

11,504,000 PA

$12.37M

0.470%

ICAHN ENTERPRISES LP / ICAHN ENTERPRISES FINA…

—

451102BZ9

US451102BZ91

DBT

CORP

12,401,000 PA

$12.28M

0.467%

HERENS HOLDCO SARL

HERENS HOLDCO SARL 4.75% 05/15/2028 144A

—

427169AA5

US427169AA59

DBT

CORP

12,965,000 PA

$11.47M

0.436%

CHS/CMNTY HEALTH SYSTEMS INC

CHS/CMNTY HEALTH SYSTEMS INC 5.25% 05/15/2030…

—

12543DBM1

US12543DBM11

DBT

CORP

11,925,000 PA

$11.26M

0.428%

REDFIN CORPORATION

REDFIN CORP CONV 0.5% 04/01/2027

—

75737FAE8

US75737FAE88

DBT

CORP

11,683,000 PA

$11.15M

0.424%

1261229 BC LTD

1261229 BC LTD 10% 04/15/2032 144A

—

68288AAA5

US68288AAA51

DBT

CORP

10,425,000 PA

$10.77M

0.409%

ALTICE FRANCE SA

ALTICE FRANCE SA 6.5% 04/15/2032 144A

—

02090DAD0

US02090DAD03

DBT

CORP

10,937,547 PA

$10.76M

0.409%

WHIRLPOOL CORP

WHIRLPOOL CORP 6.5% 06/15/2033

—

963320BE5

US963320BE54

DBT

CORP

10,837,000 PA

$10.38M

0.394%

HUMANA INC

HUMANA INC 6.625%/VAR 09/15/2056

—

444859CE0

US444859CE04

DBT

CORP

10,023,000 PA

$9.88M

0.375%

VIKING CRUISES LTD

VIKING CRUISES LTD 5.875% 10/15/2033 144A

—

92676XAH0

US92676XAH08

DBT

CORP

9,710,000 PA

$9.73M

0.370%

TULLOW HOLDCO 2 LTD

TULLOW HOLDCO 2 LTD 15% 11/15/2028 144A

—

89941AAA0

US89941AAA07

DBT

CORP

9,298,480.09 PA

$9.55M

0.363%

LGI HOMES INC

LGI HOMES INC 7% 11/15/2032 144A

—

50187TAK2

US50187TAK25

DBT

CORP

9,913,000 PA

$9.50M

0.361%

GLOBAL AIRCRAFT LEASING CO LTD

GLOBAL AIRCRAFT LEASING CO LTD 8.75% 09/01/20…

—

37960JAC2

US37960JAC27

DBT

CORP

9,258,000 PA

$9.39M

0.357%

STANDARD BUILDING SOLUTIONS INC

STANDARD BUILDING SOLUTIONS INC 6.25% 08/01/2…

—

853191AC8

US853191AC80

DBT

CORP

9,280,000 PA

$9.27M

0.352%

CORE SCIENTIFIC FINANCE I LLC

CORE SCIENTIFIC FINANCE I LLC 7.75% 05/15/203…

—

21874LAA0

US21874LAA08

DBT

CORP

9,195,000 PA

$9.17M

0.349%

FERTITTA ENTERTAINMENT LLC / FERTITTA ENTERTA…

—

31556TAC3

US31556TAC36

DBT

CORP

9,452,000 PA

$9.16M

0.348%

RIOT PLATFORMS INC

RIOT PLATFORMS INC CONV 0.75% 01/15/2030

—

767292AB1

US767292AB16

DBT

CORP

6,172,000 PA

$8.80M

0.335%

AIR LEASE CORP

AIR LEASE CORP 4.125%/VAR PERP

—

00912XBK9

US00912XBK90

CORP

8,851,000 PA

$8.73M

0.332%

DISCOVERY PURCHASER CORPORATION

ENVU TERM B 1LN 10/04/2029

—

25471NAC0

US25471NAC02

LON

CORP

8,779,150 PA

$8.69M

0.330%

MOLINA HEALTHCARE INC

MOLINA HEALTHCARE INC 6.25% 01/15/2033 144A

—

60855RAM2

US60855RAM25

DBT

CORP

8,655,000 PA

$8.65M

0.329%

ASURION LLC AND ASURION CO-ISSUER INC

ASURION LLC AND ASURION CO-ISSUER INC 8% 12/3…

—

045941AA9

US045941AA96

DBT

CORP

8,255,000 PA

$8.62M

0.328%

HERENS US HOLDCO CORP

LONZA SPECIALTY INGREDIENTS TERM B 1LN 07/03/…

—

XAL4780EAC83

LON

CORP

9,322,860.93 PA

$8.61M

0.327%

ADVANCION HOLDINGS LLC

ANGUS CHEMICAL TERM B 1LN 11/24/2027

—

04317JAB4

US04317JAB44

LON

CORP

9,305,349.87 PA

$8.47M

0.322%

KOSMOS ENERGY LTD

KOSMOS ENERGY LTD CONV 3.125% 03/15/2030

—

500688AH9

US500688AH90

DBT

CORP

10,100,000 PA

$8.46M

0.322%

UNITI GROUP LP / UNITI GROUP FINANCE INC / CS…

—

91327BAA8

US91327BAA89

DBT

CORP

8,607,000 PA

$8.46M

0.321%

OLYMPUS WATER US HOLDING CORPORATION

OLYMPUS WATER US HOLDING CORPORATION 7.25% 02…

—

681639AE0

US681639AE00

DBT

CORP

8,600,000 PA

$8.41M

0.319%

COGENT COMMUNICATIONS GROUP INC / COGENT COMM…

—

19240WAA7

US19240WAA71

DBT

CORP

8,443,000 PA

$8.39M

0.319%

CARNIVAL CORP

CARNIVAL CORP 6.125% 02/15/2033 144A

—

143658BX9

US143658BX94

DBT

CORP

8,140,000 PA

$8.26M

0.314%

HEXION HOLDINGS CORPORATION

HEXION TERM 1LN 03/15/2029

—

00217XAE6

US00217XAE67

LON

CORP

8,490,049.86 PA

$8.22M

0.312%

C and W SENIOR FINANCE LTD

C and W SENIOR FINANCE LTD 9% 01/15/2033 144A

—

12665MAA0

US12665MAA09

DBT

CORP

7,948,000 PA

$8.12M

0.309%

MERIDIAN ARC HOLDCO LLC

MERIDIAN ARC HOLDCO LLC 6.25% 04/30/2031 144A

—

58990CAA1

US58990CAA18

DBT

CORP

8,105,000 PA

$8.10M

0.308%

STONEMOR INC

STONEMOR INC 8.5% 05/15/2029 144A

—

86184WAA4

US86184WAA45

DBT

CORP

8,193,000 PA

$8.09M

0.307%

CELANESE US HLDGS LLC

CELANESE US HLDGS LLC 7.375% 02/15/2034

—

15089QBD5

US15089QBD51

DBT

CORP

7,715,000 PA

$8.08M

0.307%

QUIKRETE HOLDINGS INC

QUIKRETE HOLDINGS INC 6.375% 03/01/2032 144A

—

74843PAA8

US74843PAA84

DBT

CORP

7,947,000 PA

$8.07M

0.307%

WAYFAIR LLC

WAYFAIR LLC 7.75% 09/15/2030 144A

—

94419NAB3

US94419NAB38

DBT

CORP

7,748,000 PA

$8.04M

0.306%