U.S. CORE EQUITY 1 PORTFOLIO

S000000979DFA INVESTMENT DIMENSIONS GROUP INCCIK 0000355437

Share classes

1 class of this one portfolio · 0 exchange-listed

Class ID	Symbol	Status	Security in the master	Type
C000002730	DFEOX	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

4 periods filed. Holdings below describe the selected month only.

2026-04-30 2026-01-31A 2025-10-31A 2025-07-31A

Filing

NPORT-P/A · filed 2026-06-04

Report date: 2025-10-31
Net assets: $37,972,139,102.67
Total assets: $39,744,201,030.92
Total liabilities: $1,772,061,928.25
Assets invested: $0
Cash not reported in C or D: $9,226,520.61
Amendment: Yes
Accession: 0001410368-26-057023

By asset category

N-PORT Item C.4.a

ECEquity - common$38.47B96.8%

STIVShort-term investment veh…$1.24B3.1%

DEDerivative - equity$9.71M0.0%

By asset category

By issuer category

N-PORT Item C.4.b

CORPCorporate$37.64B94.8%

RFRegistered fund$2.07B5.2%

OTHEROther; the filer describe…$9.71M0.0%

USGSEUS government sponsored e…$2.96M0.0%

By issuer category

By investment country

as filed

USUS$38.27B96.6%

IEIE$676.05M1.7%

BMBM$181.86M0.5%

CHCH$122.01M0.3%

KYKY$64.86M0.2%

SGSG$53.56M0.1%

GBGB$50.18M0.1%

NLNL$48.11M0.1%

JEJE$47.22M0.1%

LRLR$43.27M0.1%

CWCW$33.59M0.1%

PRPR$32.89M0.1%

By country

Classification look-through

Positions resolved to the master through ISIN, then rolled up through the taxonomy. 92.0% of reported value reaches a classification.

Equity · Information Technology(323)$12.86B32.4%

Equity · Financials(468)$5.83B14.7%

Equity · Industrials(337)$3.89B9.8%

Equity · Consumer Discretionary(284)$3.88B9.8%

Equity · Health Care(263)$3.17B8.0%

Not resolved to the master(149)$2.91B7.3%

Equity · Consumer Staples(101)$1.78B4.5%

Equity · Communication Services(76)$1.69B4.3%

Equity · Energy(102)$1.23B3.1%

Equity · Materials(120)$1.01B2.5%

Equity · Utilities(67)$967.03M2.4%

Resolved, not yet classified(61)$277.21M0.7%

Equity(10)$114.22M0.3%

Equity · Real Estate(20)$108.50M0.3%

Alternative · Digital Asset(1)$421.6K0.0%

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 ($39.73B), not of the fund’s net assets ($37.97B). The two differ by cash, derivatives filed with no market value, and rounding.

Classification look-through

Holdings

2,382 positions in this filing

Issuer nameAsset categoryIssuer category

Holdings

Issuer↕	In master	CUSIP / ISIN	Asset	Balance↕	Value↕	Weight▲	Country
ICON PLC	ICLR	000000000 IE0005711209	EC CORP	4,967 NS	$853.4K	0.002%	IE
Pursuit Attractions and Hospitality Inc Pursuit Attractions & Hospitality, Inc.	PRSU	92552R406 US92552R4065	EC CORP	24,119 NS	$855.7K	0.002%	US
Jamf Holding Corp Jamf Holding Corp.	—	47074L105 US47074L1052	EC CORP	66,741 NS	$857.6K	0.002%	US
Energizer Holdings Inc Energizer Holdings, Inc.	ENR	29272W109 US29272W1099	EC CORP	37,389 NS	$868.5K	0.002%	US
Matthews International Corp Matthews International Corp.	MATW	577128101 US5771281012	EC CORP	37,095 NS	$868.8K	0.002%	US
HarborOne Bancorp Inc HarborOne Bancorp, Inc.	—	41165Y100 US41165Y1001	EC CORP	71,823 NS	$869.1K	0.002%	US
Viasat Inc Viasat, Inc.	VSAT	92552V100 US92552V1008	EC CORP	21,884 NS	$871.4K	0.002%	US
American Public Education Inc American Public Education, Inc.	APEI	02913V103 US02913V1035	EC CORP	26,462 NS	$886.2K	0.002%	US
EXPRO GROUP HOLDINGS NV Expro Group Holdings NV	—	000000000 NL0010556684	EC CORP	65,808 NS	$893.7K	0.002%	NL
V2X Inc V2X, Inc.	VVX	92242T101 US92242T1016	EC CORP	15,654 NS	$893.7K	0.002%	US
AMN Healthcare Services Inc AMN Healthcare Services, Inc.	AMN	001744101 US0017441017	EC CORP	46,079 NS	$907.3K	0.002%	US
Cable One Inc Cable One, Inc.	CABO	12685J105 US12685J1051	EC CORP	6,125 NS	$909.9K	0.002%	US
N-able Inc/US N-able, Inc.	NABL	62878D100 US62878D1000	EC CORP	116,852 NS	$915.0K	0.002%	US
Natural Gas Services Group Inc Natural Gas Services Group, Inc.	NGS	63886Q109 US63886Q1094	EC CORP	32,924 NS	$916.6K	0.002%	US
Byline Bancorp Inc Byline Bancorp, Inc.	BY	124411109 US1244111092	EC CORP	34,323 NS	$917.8K	0.002%	US
Hawaiian Electric Industries Inc Hawaiian Electric Industries, Inc.	HE	419870100 US4198701009	EC CORP	79,096 NS	$919.1K	0.002%	US
Beazer Homes USA Inc Beazer Homes USA, Inc.	BZH	07556Q881 US07556Q8814	EC CORP	41,321 NS	$925.6K	0.002%	US
Hingham Institution For Savings The Hingham Institution For Savings	HIFS	433323102 US4333231029	EC CORP	3,148 NS	$926.3K	0.002%	US
Vitesse Energy Inc Vitesse Energy, Inc.	VTS	92852X103 US92852X1037	EC CORP	42,644 NS	$927.5K	0.002%	US
Crawford & Co Crawford & Co.	CRD.A	224633206 US2246332066	EC CORP	86,071 NS	$932.1K	0.002%	US
AMERISAFE Inc AMERISAFE, Inc.	AMSF	03071H100 US03071H1005	EC CORP	23,284 NS	$933.2K	0.002%	US
Investors Title Co Investors Title Co.	ITIC	461804106 US4618041069	EC CORP	3,641 NS	$941.5K	0.002%	US
Frequency Electronics Inc Frequency Electronics, Inc.	FEIM	358010106 US3580101067	EC CORP	25,787 NS	$946.9K	0.002%	US
Kimball Electronics Inc Kimball Electronics, Inc.	KE	49428J109 US49428J1097	EC CORP	32,710 NS	$951.0K	0.003%	US
Orrstown Financial Services Inc Orrstown Financial Services, Inc.	ORRF	687380105 US6873801053	EC CORP	28,617 NS	$952.4K	0.003%	US
Deluxe Corp Deluxe Corp.	DLX	248019101 US2480191012	EC CORP	52,665 NS	$953.8K	0.003%	US
Oppenheimer Holdings Inc Oppenheimer Holdings, Inc.	OPY	683797104 US6837971042	EC CORP	13,697 NS	$955.5K	0.003%	US
Insteel Industries Inc Insteel Industries, Inc.	IIIN	45774W108 US45774W1080	EC CORP	30,644 NS	$957.3K	0.003%	US
Southside Bancshares Inc Southside Bancshares, Inc.	SBSI	84470P109 US84470P1093	EC CORP	34,090 NS	$958.6K	0.003%	US
Universal Logistics Holdings Inc Universal Logistics Holdings, Inc.	ULH	91388P105 US91388P1057	EC CORP	59,256 NS	$958.8K	0.003%	US
Unity Bancorp Inc Unity Bancorp, Inc.	UNTY	913290102 US9132901029	EC CORP	21,178 NS	$961.7K	0.003%	US
Fortrea Holdings Inc Fortrea Holdings, Inc.	FTRE	34965K107 US34965K1079	EC CORP	92,725 NS	$969.9K	0.003%	US
TreeHouse Foods Inc TreeHouse Foods, Inc.	—	89469A104 US89469A1043	EC CORP	53,316 NS	$970.4K	0.003%	US
Castle Biosciences Inc Castle Biosciences, Inc.	CSTL	14843C105 US14843C1053	EC CORP	38,113 NS	$971.9K	0.003%	US
Tompkins Financial Corp Tompkins Financial Corp.	TMP	890110109 US8901101092	EC CORP	15,365 NS	$975.1K	0.003%	US
MillerKnoll Inc MillerKnoll, Inc.	MLKN	600544100 US6005441000	EC CORP	62,753 NS	$980.2K	0.003%	US
CNB Financial Corp/PA CNB Financial Corp.	CCNE	126128107 US1261281075	EC CORP	39,932 NS	$982.3K	0.003%	US
Hillman Solutions Corp Hillman Solutions Corp.	HLMN	431636109 US4316361090	EC CORP	106,790 NS	$984.6K	0.003%	US
Transcat Inc Transcat, Inc.	TRNS	893529107 US8935291075	EC CORP	13,668 NS	$993.0K	0.003%	US
Baldwin Insurance Group Inc/The Baldwin Insurance Group, Inc.	BWIN	05589G102 US05589G1022	EC CORP	44,998 NS	$994.5K	0.003%	US
Teladoc Health Inc Teladoc Health, Inc.	TDOC	87918A105 US87918A1051	EC CORP	115,488 NS	$996.7K	0.003%	US
Heritage Insurance Holdings Inc Heritage Insurance Holdings, Inc.	HRTG	42727J102 US42727J1025	EC CORP	42,336 NS	$1.00M	0.003%	US
Green Brick Partners Inc Green Brick Partners, Inc.	GRBK	392709101 US3927091013	EC CORP	15,453 NS	$1.00M	0.003%	US
Mobileye Global Inc Mobileye Global, Inc.	MBLY	60741F104 US60741F1049	EC CORP	76,080 NS	$1.00M	0.003%	US
Astrana Health Inc Astrana Health, Inc.	ASTH	03763A207 US03763A2078	EC CORP	32,275 NS	$1.01M	0.003%	US
Ardmore Shipping Corp Ardmore Shipping Corp.	ASC	000000000 MHY0207T1001	EC CORP	81,498 NS	$1.03M	0.003%	MH
Columbia Financial Inc Columbia Financial, Inc.	—	197641103 US1976411033	EC CORP	69,880 NS	$1.03M	0.003%	US
Janus International Group Inc Janus International Group, Inc.	JBI	47103N106 US47103N1063	EC CORP	107,568 NS	$1.03M	0.003%	US
Forestar Group Inc Forestar Group, Inc.	FOR	346232101 US3462321015	EC CORP	39,733 NS	$1.03M	0.003%	US
CEVA Inc CEVA, Inc.	CEVA	157210105 US1572101053	EC CORP	37,982 NS	$1.03M	0.003%	US

Issuer↕

In master

CUSIP / ISIN

Asset

Balance↕

Value↕

Weight▲

Country

ICON PLC

ICLR

000000000

IE0005711209

CORP

4,967 NS

$853.4K

0.002%

Pursuit Attractions and Hospitality Inc

Pursuit Attractions & Hospitality, Inc.

PRSU

92552R406

US92552R4065

CORP

24,119 NS

$855.7K

0.002%

Jamf Holding Corp

Jamf Holding Corp.

—

47074L105

US47074L1052

CORP

66,741 NS

$857.6K

0.002%

Energizer Holdings Inc

Energizer Holdings, Inc.

ENR

29272W109

US29272W1099

CORP

37,389 NS

$868.5K

0.002%

Matthews International Corp

Matthews International Corp.

MATW

577128101

US5771281012

CORP

37,095 NS

$868.8K

0.002%

HarborOne Bancorp Inc

HarborOne Bancorp, Inc.

—

41165Y100

US41165Y1001

CORP

71,823 NS

$869.1K

0.002%

Viasat Inc

Viasat, Inc.

VSAT

92552V100

US92552V1008

CORP

21,884 NS

$871.4K

0.002%

American Public Education Inc

American Public Education, Inc.

APEI

02913V103

US02913V1035

CORP

26,462 NS

$886.2K

0.002%

EXPRO GROUP HOLDINGS NV

Expro Group Holdings NV

—

000000000

NL0010556684

CORP

65,808 NS

$893.7K

0.002%

V2X Inc

V2X, Inc.

VVX

92242T101

US92242T1016

CORP

15,654 NS

$893.7K

0.002%

AMN Healthcare Services Inc

AMN Healthcare Services, Inc.

AMN

001744101

US0017441017

CORP

46,079 NS

$907.3K

0.002%

Cable One Inc

Cable One, Inc.

CABO

12685J105

US12685J1051

CORP

6,125 NS

$909.9K

0.002%

N-able Inc/US

N-able, Inc.

NABL

62878D100

US62878D1000

CORP

116,852 NS

$915.0K

0.002%

Natural Gas Services Group Inc

Natural Gas Services Group, Inc.

NGS

63886Q109

US63886Q1094

CORP

32,924 NS

$916.6K

0.002%

Byline Bancorp Inc

Byline Bancorp, Inc.

124411109

US1244111092

CORP

34,323 NS

$917.8K

0.002%

Hawaiian Electric Industries Inc

Hawaiian Electric Industries, Inc.

419870100

US4198701009

CORP

79,096 NS

$919.1K

0.002%

Beazer Homes USA Inc

Beazer Homes USA, Inc.

BZH

07556Q881

US07556Q8814

CORP

41,321 NS

$925.6K

0.002%

Hingham Institution For Savings The

Hingham Institution For Savings

HIFS

433323102

US4333231029

CORP

3,148 NS

$926.3K

0.002%

Vitesse Energy Inc

Vitesse Energy, Inc.

VTS

92852X103

US92852X1037

CORP

42,644 NS

$927.5K

0.002%

Crawford & Co

Crawford & Co.

CRD.A

224633206

US2246332066

CORP

86,071 NS

$932.1K

0.002%

AMERISAFE Inc

AMERISAFE, Inc.

AMSF

03071H100

US03071H1005

CORP

23,284 NS

$933.2K

0.002%

Investors Title Co

Investors Title Co.

ITIC

461804106

US4618041069

CORP

3,641 NS

$941.5K

0.002%

Frequency Electronics Inc

Frequency Electronics, Inc.

FEIM

358010106

US3580101067

CORP

25,787 NS

$946.9K

0.002%

Kimball Electronics Inc

Kimball Electronics, Inc.

49428J109

US49428J1097

CORP

32,710 NS

$951.0K

0.003%

Orrstown Financial Services Inc

Orrstown Financial Services, Inc.

ORRF

687380105

US6873801053

CORP

28,617 NS

$952.4K

0.003%

Deluxe Corp

Deluxe Corp.

DLX

248019101

US2480191012

CORP

52,665 NS

$953.8K

0.003%

Oppenheimer Holdings Inc

Oppenheimer Holdings, Inc.

OPY

683797104

US6837971042

CORP

13,697 NS

$955.5K

0.003%

Insteel Industries Inc

Insteel Industries, Inc.

IIIN

45774W108

US45774W1080

CORP

30,644 NS

$957.3K

0.003%

Southside Bancshares Inc

Southside Bancshares, Inc.

SBSI

84470P109

US84470P1093

CORP

34,090 NS

$958.6K

0.003%

Universal Logistics Holdings Inc

Universal Logistics Holdings, Inc.

ULH

91388P105

US91388P1057

CORP

59,256 NS

$958.8K

0.003%

Unity Bancorp Inc

Unity Bancorp, Inc.

UNTY

913290102

US9132901029

CORP

21,178 NS

$961.7K

0.003%

Fortrea Holdings Inc

Fortrea Holdings, Inc.

FTRE

34965K107

US34965K1079

CORP

92,725 NS

$969.9K

0.003%

TreeHouse Foods Inc

TreeHouse Foods, Inc.

—

89469A104

US89469A1043

CORP

53,316 NS

$970.4K

0.003%

Castle Biosciences Inc

Castle Biosciences, Inc.

CSTL

14843C105

US14843C1053

CORP

38,113 NS

$971.9K

0.003%

Tompkins Financial Corp

Tompkins Financial Corp.

TMP

890110109

US8901101092

CORP

15,365 NS

$975.1K

0.003%

MillerKnoll Inc

MillerKnoll, Inc.

MLKN

600544100

US6005441000

CORP

62,753 NS

$980.2K

0.003%

CNB Financial Corp/PA

CNB Financial Corp.

CCNE

126128107

US1261281075

CORP

39,932 NS

$982.3K

0.003%

Hillman Solutions Corp

Hillman Solutions Corp.

HLMN

431636109

US4316361090

CORP

106,790 NS

$984.6K

0.003%

Transcat Inc

Transcat, Inc.

TRNS

893529107

US8935291075

CORP

13,668 NS

$993.0K

0.003%

Baldwin Insurance Group Inc/The

Baldwin Insurance Group, Inc.

BWIN

05589G102

US05589G1022

CORP

44,998 NS

$994.5K

0.003%

Teladoc Health Inc

Teladoc Health, Inc.

TDOC

87918A105

US87918A1051

CORP

115,488 NS

$996.7K

0.003%

Heritage Insurance Holdings Inc

Heritage Insurance Holdings, Inc.

HRTG

42727J102

US42727J1025

CORP

42,336 NS

$1.00M

0.003%

Green Brick Partners Inc

Green Brick Partners, Inc.

GRBK

392709101

US3927091013

CORP

15,453 NS

$1.00M

0.003%

Mobileye Global Inc

Mobileye Global, Inc.

MBLY

60741F104

US60741F1049

CORP

76,080 NS

$1.00M

0.003%

Astrana Health Inc

Astrana Health, Inc.

ASTH

03763A207

US03763A2078

CORP

32,275 NS

$1.01M

0.003%

Ardmore Shipping Corp

Ardmore Shipping Corp.

ASC

000000000

MHY0207T1001

CORP

81,498 NS

$1.03M

0.003%

Columbia Financial Inc

Columbia Financial, Inc.

—

197641103

US1976411033

CORP

69,880 NS

$1.03M

0.003%

Janus International Group Inc

Janus International Group, Inc.

JBI

47103N106

US47103N1063

CORP

107,568 NS

$1.03M

0.003%

Forestar Group Inc

Forestar Group, Inc.

FOR

346232101

US3462321015

CORP

39,733 NS

$1.03M

0.003%

CEVA Inc

CEVA, Inc.

CEVA

157210105

US1572101053

CORP

37,982 NS

$1.03M

0.003%