VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND

S000002855VANGUARD INSTITUTIONAL INDEX FUNDSCIK 0000862084

Share classes

2 classes of this one portfolio · 0 exchange-listed

Class ID	Symbol	Status	Security in the master	Type
C000007828	VITNX	NOT_LISTED	not exchange-listed	—
C000007829	VITPX	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 2026-05-28

Report date: 2026-03-31
Net assets: $30,279,365,271.7
Total assets: $30,285,525,651.75
Total liabilities: $6,160,380.05
Assets invested: $0
Cash not reported in C or D: $11,916,831.67
Amendment: No
Accession: 0000862084-26-000093

By asset category

N-PORT Item C.4.a

ECEquity - common$30.08B99.4%

STIVShort-term investment veh…$189.57M0.6%

EPEquity - preferred$516.600.0%

DEDerivative - equity-$2.09M-0.0%

By asset category

By issuer category

N-PORT Item C.4.b

CORPCorporate$30.26B100.0%

OTHEROther; the filer describe…-$2.09M-0.0%

By issuer category

By investment country

as filed

USUS$30.26B100.0%

N/AN/A-$2.09M-0.0%

By country

Classification look-through

Positions resolved to the master through ISIN, then rolled up through the taxonomy. 97.2% of reported value reaches a classification.

Equity · Information Technology(421)$11.12B36.7%

Equity · Financials(525)$3.80B12.6%

Equity · Health Care(549)$3.00B9.9%

Equity · Consumer Discretionary(303)$2.98B9.8%

Equity · Industrials(368)$2.55B8.4%

Equity · Consumer Staples(102)$1.36B4.5%

Equity · Communication Services(87)$1.32B4.4%

Equity · Energy(127)$932.89M3.1%

Equity · Utilities(71)$757.59M2.5%

Not resolved to the master(137)$735.79M2.4%

Equity · Real Estate(175)$727.93M2.4%

Equity · Materials(133)$715.21M2.4%

Equity(9)$130.37M0.4%

Resolved, not yet classified(78)$120.08M0.4%

Alternative · Digital Asset(6)$13.51M0.0%

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 ($30.26B), not of the fund’s net assets ($30.28B). The two differ by cash, derivatives filed with no market value, and rounding.

Classification look-through

Holdings

3,091 positions in this filing

Issuer nameAsset categoryIssuer category

Holdings

Issuer↕	In master	CUSIP / ISIN	Asset	Balance↕	Value↕	Weight▲	Country
Anika Therapeutics Inc ANIKA THERAPEUTI	ANIK	035255108 US0352551081	EC CORP	4,570 NS	$66.3K	0.000%	US
Smith Douglas Homes Corp SMITH DOUG HOMES	SDHC	83207R107 US83207R1077	EC CORP	5,184 NS	$66.4K	0.000%	US
Bowlero Corp LUCKY STRIKE ENT	LUCK	10258P102 US10258P1021	EC CORP	8,030 NS	$66.8K	0.000%	US
Sight Sciences Inc SIGHT SCIENCES I	SGHT	82657M105 US82657M1053	EC CORP	17,749 NS	$66.9K	0.000%	US
Amtech Systems Inc AMTECH SYS INC	ASYS	032332504 US0323325045	EC CORP	5,730 NS	$66.9K	0.000%	US
MicroVision Inc MICROVISION INC	—	594960304 US5949603048	EC CORP	104,855 NS	$67.2K	0.000%	US
Backblaze Inc BACKBLAZE INC-A	BLZE	05637B105 US05637B1052	EC CORP	19,508 NS	$67.3K	0.000%	US
Medifast Inc MEDIFAST INC	MED	58470H101 US58470H1014	EC CORP	6,610 NS	$67.4K	0.000%	US
Apyx Medical Corp APYX MEDICAL COR	APYX	03837C106 US03837C1062	EC CORP	18,313 NS	$67.6K	0.000%	US
Priority Technology Holdings Inc PRIORITY TECHNOL	PRTH	74275G107 US74275G1076	EC CORP	14,318 NS	$67.6K	0.000%	US
Richardson Electronics Ltd/United States RICHARDSON ELEC	RELL	763165107 US7631651079	EC CORP	6,173 NS	$67.6K	0.000%	US
Acme United Corp ACME UNITED CORP	ACU	004816104 US0048161048	EC CORP	1,512 NS	$67.9K	0.000%	US
Medallion Financial Corp MEDALLION FINL	MFIN	583928106 US5839281061	EC CORP	7,935 NS	$67.9K	0.000%	US
Kingsway Financial Services Inc KINGSWAY FINL	KWY	496904202 US4969042021	EC CORP	6,539 NS	$68.2K	0.000%	US
Espey Mfg. & Electronics Corp ESPEY MFG & ELEC	ESP	296650104 US2966501049	EC CORP	1,231 NS	$68.2K	0.000%	US
Information Services Group Inc INFORMATION SERV	III	45675Y104 US45675Y1047	EC CORP	17,814 NS	$68.4K	0.000%	US
Galectin Therapeutics Inc GALECTIN THERAPE	GALT	363225202 US3632252025	EC CORP	24,567 NS	$68.5K	0.000%	US
FutureFuel Corp FUTUREFUEL CORP	FF	36116M106 US36116M1062	EC CORP	17,913 NS	$69.0K	0.000%	US
Douglas Elliman Inc DOUGLAS ELLIMAN	DOUG	25961D105 US25961D1054	EC CORP	42,189 NS	$69.2K	0.000%	US
Inseego Corp INSEEGO CORP	INSG	45782B302 US45782B3024	EC CORP	6,265 NS	$69.7K	0.000%	US
EVI Industries Inc EVI INDUSTRIES I	EVI	26929N102 US26929N1028	EC CORP	3,388 NS	$69.7K	0.000%	US
WiSA Technologies Inc DATAVAULT AI INC	DVLT	86633R609 US86633R6099	EC CORP	113,021 NS	$69.9K	0.000%	US
OmniAb Inc OMNIAB INC	OABI	68218J103 US68218J1034	EC CORP	44,629 NS	$70.1K	0.000%	US
Geospace Technologies Corp GEOSPACE TECHNOL	GEOS	37364X109 US37364X1090	EC CORP	5,745 NS	$70.1K	0.000%	US
Elicio Therapeutics Inc ELICIO THERAPEUT	ELTX	28657F103 US28657F1030	EC CORP	6,579 NS	$70.3K	0.000%	US
Kaltura Inc KALTURA INC	KLTR	483467106 US4834671061	EC CORP	58,140 NS	$70.9K	0.000%	US
GrafTech International Ltd GRAFTECH INTERNA	EAF	384313607 US3843136074	EC CORP	10,499 NS	$71.2K	0.000%	US
Escalade Inc ESCALADE INC	ESCA	296056104 US2960561049	EC CORP	4,178 NS	$71.7K	0.000%	US
Landmark Bancorp Inc/Manhattan KS LANDMARK BANCORP	LARK	51504L107 US51504L1070	EC CORP	2,894 NS	$71.8K	0.000%	US
Ovid therapeutics Inc OVID THERAPEUTIC	OVID	690469101 US6904691010	EC CORP	32,545 NS	$72.2K	0.000%	US
Datacentrex Inc DATACENTREX INC	DTCX	256918103 US2569181033	EC CORP	33,657 NS	$72.4K	0.000%	US
Waterstone Financial Inc WATERSTONE FINAN	WSBF	94188P101 US94188P1012	EC CORP	4,017 NS	$72.4K	0.000%	US
Resources Connection Inc RESOURCES CONNEC	RGP	76122Q105 US76122Q1058	EC CORP	19,455 NS	$72.6K	0.000%	US
Friedman Industries Inc FRIEDMAN INDTRY	FRD	358435105 US3584351056	EC CORP	4,101 NS	$72.7K	0.000%	US
OP Bancorp OP BANCORP	OPBK	67109R109 US67109R1095	EC CORP	5,487 NS	$73.0K	0.000%	US
Inovio Pharmaceuticals Inc INOVIO PHARMACEU	INO	45773H409 US45773H4092	EC CORP	42,017 NS	$73.1K	0.000%	US
SANUWAVE Health Inc SANUWAVE HEALTH	SNWV	80303D305 US80303D3052	EC CORP	4,232 NS	$73.2K	0.000%	US
Virgin Galactic Holdings Inc VIRGIN GALACTIC	SPCE	92766K403 US92766K4031	EC CORP	30,211 NS	$73.4K	0.000%	US
Tevogen Bio Holdings Inc TEVOGEN BIO HOLD	TVGN	88165K200 US88165K2006	EC CORP	16,307 NS	$73.7K	0.000%	US
Lands' End Inc LANDS' END INC	LE	51509F105 US51509F1057	EC CORP	6,583 NS	$74.0K	0.000%	US
Organogenesis Holdings Inc ORGANOGENESIS HO	ORGO	68621F102 US68621F1021	EC CORP	31,293 NS	$74.2K	0.000%	US
Quanterix Corp QUANTERIX CORP	QTRX	74766Q101 US74766Q1013	EC CORP	21,088 NS	$74.2K	0.000%	US
Sagimet Biosciences Inc SAGIMET BIOSCI-A	SGMT	786700104 US7867001049	EC CORP	14,259 NS	$74.5K	0.000%	US
TON Strategy Co TON STRATEGY CO	TONX	92337U302 US92337U3023	EC CORP	30,211 NS	$74.6K	0.000%	US
Jupiter Neurosciences Inc JUPITER NEUROSCI	—	48208B203 US48208B2034	EC CORP	198,769 NS	$74.8K	0.000%	US
Orion Office REIT Inc ORION PROPERTIES	ONL	68629Y103 US68629Y1038	EC CORP	34,834 NS	$74.9K	0.000%	US
Franklin Covey Co FRANKLIN COVEY	FC	353469109 US3534691098	EC CORP	4,758 NS	$75.1K	0.000%	US
Pioneer Bancorp Inc/NY PIONEER BANCORP	PBFS	723561106 US7235611065	EC CORP	5,447 NS	$75.8K	0.000%	US
Intellicheck Inc INTELLICHECK INC	IDN	45817G201 US45817G2012	EC CORP	10,862 NS	$75.9K	0.000%	US
Motorcar Parts of America Inc MOTORCAR PARTS	MPAA	620071100 US6200711009	EC CORP	6,878 NS	$76.1K	0.000%	US

Issuer↕

In master

CUSIP / ISIN

Asset

Balance↕

Value↕

Weight▲

Country

Anika Therapeutics Inc

ANIKA THERAPEUTI

ANIK

035255108

US0352551081

CORP

4,570 NS

$66.3K

0.000%

Smith Douglas Homes Corp

SMITH DOUG HOMES

SDHC

83207R107

US83207R1077

CORP

5,184 NS

$66.4K

0.000%

Bowlero Corp

LUCKY STRIKE ENT

LUCK

10258P102

US10258P1021

CORP

8,030 NS

$66.8K

0.000%

Sight Sciences Inc

SIGHT SCIENCES I

SGHT

82657M105

US82657M1053

CORP

17,749 NS

$66.9K

0.000%

Amtech Systems Inc

AMTECH SYS INC

ASYS

032332504

US0323325045

CORP

5,730 NS

$66.9K

0.000%

MicroVision Inc

MICROVISION INC

—

594960304

US5949603048

CORP

104,855 NS

$67.2K

0.000%

Backblaze Inc

BACKBLAZE INC-A

BLZE

05637B105

US05637B1052

CORP

19,508 NS

$67.3K

0.000%

Medifast Inc

MEDIFAST INC

MED

58470H101

US58470H1014

CORP

6,610 NS

$67.4K

0.000%

Apyx Medical Corp

APYX MEDICAL COR

APYX

03837C106

US03837C1062

CORP

18,313 NS

$67.6K

0.000%

Priority Technology Holdings Inc

PRIORITY TECHNOL

PRTH

74275G107

US74275G1076

CORP

14,318 NS

$67.6K

0.000%

Richardson Electronics Ltd/United States

RICHARDSON ELEC

RELL

763165107

US7631651079

CORP

6,173 NS

$67.6K

0.000%

Acme United Corp

ACME UNITED CORP

ACU

004816104

US0048161048

CORP

1,512 NS

$67.9K

0.000%

Medallion Financial Corp

MEDALLION FINL

MFIN

583928106

US5839281061

CORP

7,935 NS

$67.9K

0.000%

Kingsway Financial Services Inc

KINGSWAY FINL

KWY

496904202

US4969042021

CORP

6,539 NS

$68.2K

0.000%

Espey Mfg. & Electronics Corp

ESPEY MFG & ELEC

ESP

296650104

US2966501049

CORP

1,231 NS

$68.2K

0.000%

Information Services Group Inc

INFORMATION SERV

III

45675Y104

US45675Y1047

CORP

17,814 NS

$68.4K

0.000%

Galectin Therapeutics Inc

GALECTIN THERAPE

GALT

363225202

US3632252025

CORP

24,567 NS

$68.5K

0.000%

FutureFuel Corp

FUTUREFUEL CORP

36116M106

US36116M1062

CORP

17,913 NS

$69.0K

0.000%

Douglas Elliman Inc

DOUGLAS ELLIMAN

DOUG

25961D105

US25961D1054

CORP

42,189 NS

$69.2K

0.000%

Inseego Corp

INSEEGO CORP

INSG

45782B302

US45782B3024

CORP

6,265 NS

$69.7K

0.000%

EVI Industries Inc

EVI INDUSTRIES I

EVI

26929N102

US26929N1028

CORP

3,388 NS

$69.7K

0.000%

WiSA Technologies Inc

DATAVAULT AI INC

DVLT

86633R609

US86633R6099

CORP

113,021 NS

$69.9K

0.000%

OmniAb Inc

OMNIAB INC

OABI

68218J103

US68218J1034

CORP

44,629 NS

$70.1K

0.000%

Geospace Technologies Corp

GEOSPACE TECHNOL

GEOS

37364X109

US37364X1090

CORP

5,745 NS

$70.1K

0.000%

Elicio Therapeutics Inc

ELICIO THERAPEUT

ELTX

28657F103

US28657F1030

CORP

6,579 NS

$70.3K

0.000%

Kaltura Inc

KALTURA INC

KLTR

483467106

US4834671061

CORP

58,140 NS

$70.9K

0.000%

GrafTech International Ltd

GRAFTECH INTERNA

EAF

384313607

US3843136074

CORP

10,499 NS

$71.2K

0.000%

Escalade Inc

ESCALADE INC

ESCA

296056104

US2960561049

CORP

4,178 NS

$71.7K

0.000%

Landmark Bancorp Inc/Manhattan KS

LANDMARK BANCORP

LARK

51504L107

US51504L1070

CORP

2,894 NS

$71.8K

0.000%

Ovid therapeutics Inc

OVID THERAPEUTIC

OVID

690469101

US6904691010

CORP

32,545 NS

$72.2K

0.000%

Datacentrex Inc

DATACENTREX INC

DTCX

256918103

US2569181033

CORP

33,657 NS

$72.4K

0.000%

Waterstone Financial Inc

WATERSTONE FINAN

WSBF

94188P101

US94188P1012

CORP

4,017 NS

$72.4K

0.000%

Resources Connection Inc

RESOURCES CONNEC

RGP

76122Q105

US76122Q1058

CORP

19,455 NS

$72.6K

0.000%

Friedman Industries Inc

FRIEDMAN INDTRY

FRD

358435105

US3584351056

CORP

4,101 NS

$72.7K

0.000%

OP Bancorp

OP BANCORP

OPBK

67109R109

US67109R1095

CORP

5,487 NS

$73.0K

0.000%

Inovio Pharmaceuticals Inc

INOVIO PHARMACEU

INO

45773H409

US45773H4092

CORP

42,017 NS

$73.1K

0.000%

SANUWAVE Health Inc

SANUWAVE HEALTH

SNWV

80303D305

US80303D3052

CORP

4,232 NS

$73.2K

0.000%

Virgin Galactic Holdings Inc

VIRGIN GALACTIC

SPCE

92766K403

US92766K4031

CORP

30,211 NS

$73.4K

0.000%

Tevogen Bio Holdings Inc

TEVOGEN BIO HOLD

TVGN

88165K200

US88165K2006

CORP

16,307 NS

$73.7K

0.000%

Lands' End Inc

LANDS' END INC

51509F105

US51509F1057

CORP

6,583 NS

$74.0K

0.000%

Organogenesis Holdings Inc

ORGANOGENESIS HO

ORGO

68621F102

US68621F1021

CORP

31,293 NS

$74.2K

0.000%

Quanterix Corp

QUANTERIX CORP

QTRX

74766Q101

US74766Q1013

CORP

21,088 NS

$74.2K

0.000%

Sagimet Biosciences Inc

SAGIMET BIOSCI-A

SGMT

786700104

US7867001049

CORP

14,259 NS

$74.5K

0.000%

TON Strategy Co

TON STRATEGY CO

TONX

92337U302

US92337U3023

CORP

30,211 NS

$74.6K

0.000%

Jupiter Neurosciences Inc

JUPITER NEUROSCI

—

48208B203

US48208B2034

CORP

198,769 NS

$74.8K

0.000%

Orion Office REIT Inc

ORION PROPERTIES

ONL

68629Y103

US68629Y1038

CORP

34,834 NS

$74.9K

0.000%

Franklin Covey Co

FRANKLIN COVEY

353469109

US3534691098

CORP

4,758 NS

$75.1K

0.000%

Pioneer Bancorp Inc/NY

PIONEER BANCORP

PBFS

723561106

US7235611065

CORP

5,447 NS

$75.8K

0.000%

Intellicheck Inc

INTELLICHECK INC

IDN

45817G201

US45817G2012

CORP

10,862 NS

$75.9K

0.000%

Motorcar Parts of America Inc

MOTORCAR PARTS

MPAA

620071100

US6200711009

CORP

6,878 NS

$76.1K

0.000%