Portfolio

of

Investments

Lifecycle

Index

Retirement

Income

Fund

February

29,

2024

1

See

Notes

to

Portfolios

of

Investments

(Unaudited)

SHARES

DESCRIPTION

VALUE

AFFILIATED

INVESTMENT

COMPANIES—100.0%(a)

FIXED

INCOME—39.5%

29,688,166

TIAA-CREF

Bond

Index

Fund

$

281,443,814‌

TOTAL

FIXED

INCOME

281,443,814‌

INFLATION-PROTECTED

ASSETS—9.9%

6,747,786

TIAA-CREF

Inflation-Linked

Bond

Fund

70,581,840‌

TOTAL

INFLATION-PROTECTED

ASSETS

70,581,840‌

INTERNATIONAL

EQUITY—14.1%

2,910,327

TIAA-CREF

Emerging

Markets

Equity

Index

Fund

30,209,195‌

3,151,013

TIAA-CREF

International

Equity

Index

Fund

70,614,196‌

TOTAL

INTERNATIONAL

EQUITY

100,823,391‌

SHORT-TERM

FIXED

INCOME—9.9%

7,387,762

TIAA-CREF

Short-Term

Bond

Index

Fund

70,553,129‌

TOTAL

SHORT-TERM

FIXED

INCOME

70,553,129‌

U.S.

EQUITY—26.6%

5,274,170

TIAA-CREF

Equity

Index

Fund

189,342,717‌

TOTAL

U.S.

EQUITY

189,342,717‌

TOTAL

AFFILIATED

INVESTMENT

COMPANIES

712,744,891‌

(Cost

$626,493,355)

PRINCIPAL

RATE

MATURITY

DATE

SHORT-TERM

INVESTMENTS—0.2%

REPURCHASE

AGREEMENT—0.2%

$1,220,000

(b)

Fixed

Income

Clearing

Corp

(FICC)

5

.310

%

03/01/24

1,220,000‌

TOTAL

REPURCHASE

AGREEMENT

1,220,000‌

TOTAL

SHORT-TERM

INVESTMENTS

1,220,000‌

(Cost

$1,220,000)

TOTAL

INVESTMENTS—100.2%

713,964,891‌

(Cost

$627,713,355)

OTHER

ASSETS

&

LIABILITIES,

NET—(0.2)%

(

1,092,961‌

)

NET

ASSETS—100.0%

$

712,871,930‌

(a)

The

Fund

invests

its

assets

in

Class

W

shares

of

the

affiliated

TIAA-CREF

Funds.

(b)

Agreement

with

Fixed

Income

Clearing

Corp

(FICC),

5.310%

dated

2/29/24

to

be

repurchased

at

$1,220,180

on

3/1/24,

collateralized

by

Government

Agency

Securities,

with

coupon

rate

0.750%

and

maturity

date

3/31/26,

valued

at

$1,244,469.

Lifecycle

Index

2010

Fund

February

29,

2024

Portfolio

of

Investments

2

See

Notes

to

Portfolios

of

Investments

(Unaudited)

SHARES

DESCRIPTION

VALUE

AFFILIATED

INVESTMENT

COMPANIES—100.0%(a)

FIXED

INCOME—39.5%

26,934,661

TIAA-CREF

Bond

Index

Fund

$

255,340,586‌

TOTAL

FIXED

INCOME

255,340,586‌

INFLATION-PROTECTED

ASSETS—9.9%

6,124,581

TIAA-CREF

Inflation-Linked

Bond

Fund

64,063,122‌

TOTAL

INFLATION-PROTECTED

ASSETS

64,063,122‌

INTERNATIONAL

EQUITY—12.9%

2,404,497

TIAA-CREF

Emerging

Markets

Equity

Index

Fund

24,958,678‌

2,604,034

TIAA-CREF

International

Equity

Index

Fund

58,356,401‌

TOTAL

INTERNATIONAL

EQUITY

83,315,079‌

SHORT-TERM

FIXED

INCOME—13.5%

9,138,318

TIAA-CREF

Short-Term

Bond

Index

Fund

87,270,933‌

TOTAL

SHORT-TERM

FIXED

INCOME

87,270,933‌

U.S.

EQUITY—24.2%

4,358,425

TIAA-CREF

Equity

Index

Fund

156,467,456‌

TOTAL

U.S.

EQUITY

156,467,456‌

TOTAL

AFFILIATED

INVESTMENT

COMPANIES

646,457,176‌

(Cost

$545,843,293)

TOTAL

INVESTMENTS—100.0%

646,457,176‌

(Cost

$545,843,293)

OTHER

ASSETS

&

LIABILITIES,

NET—(0.0)%

(

292,623‌

)

NET

ASSETS—100.0%

$

646,164,553‌

(a)

The

Fund

invests

its

assets

in

Class

W

shares

of

the

affiliated

TIAA-CREF

Funds.

Portfolio

of

Investments

Lifecycle

Index

2015

Fund

February

29,

2024

3

See

Notes

to

Portfolios

of

Investments

(Unaudited)

SHARES

DESCRIPTION

VALUE

AFFILIATED

INVESTMENT

COMPANIES—99.9%(a)

FIXED

INCOME—39.1%

44,505,217

TIAA-CREF

Bond

Index

Fund

$

421,909,462‌

TOTAL

FIXED

INCOME

421,909,462‌

INFLATION-PROTECTED

ASSETS—9.4%

9,629,532

TIAA-CREF

Inflation-Linked

Bond

Fund

100,724,909‌

TOTAL

INFLATION-PROTECTED

ASSETS

100,724,909‌

INTERNATIONAL

EQUITY—14.6%

4,550,567

TIAA-CREF

Emerging

Markets

Equity

Index

Fund

47,234,884‌

4,927,186

TIAA-CREF

International

Equity

Index

Fund

110,418,236‌

TOTAL

INTERNATIONAL

EQUITY

157,653,120‌

SHORT-TERM

FIXED

INCOME—9.3%

10,543,938

TIAA-CREF

Short-Term

Bond

Index

Fund

100,694,607‌

TOTAL

SHORT-TERM

FIXED

INCOME

100,694,607‌

U.S.

EQUITY—27.5%

8,247,132

TIAA-CREF

Equity

Index

Fund

296,072,044‌

TOTAL

U.S.

EQUITY

296,072,044‌

TOTAL

AFFILIATED

INVESTMENT

COMPANIES

1,077,054,142‌

(Cost

$881,182,537)

PRINCIPAL

RATE

MATURITY

DATE

SHORT-TERM

INVESTMENTS—0.0%

REPURCHASE

AGREEMENT—0.0%

$220,000

(b)

Fixed

Income

Clearing

Corp

(FICC)

5

.310

%

03/01/24

220,000‌

TOTAL

REPURCHASE

AGREEMENT

220,000‌

TOTAL

SHORT-TERM

INVESTMENTS

220,000‌

(Cost

$220,000)

TOTAL

INVESTMENTS—99.9%

1,077,274,142‌

(Cost

$881,402,537)

OTHER

ASSETS

&

LIABILITIES,

NET—0.1%

1,089,479‌

NET

ASSETS—100.0%

$

1,078,363,621‌

(a)

The

Fund

invests

its

assets

in

Class

W

shares

of

the

affiliated

TIAA-CREF

Funds.

(b)

Agreement

with

Fixed

Income

Clearing

Corp

(FICC),

5.310%

dated

2/29/24

to

be

repurchased

at

$220,032

on

3/1/24,

collateralized

by

Government

Agency

Securities,

with

coupon

rate

3.750%

and

maturity

date

4/15/26,

valued

at

$224,420.

Lifecycle

Index

2020

Fund

February

29,

2024

Portfolio

of

Investments

4

See

Notes

to

Portfolios

of

Investments

(Unaudited)

SHARES

DESCRIPTION

VALUE

AFFILIATED

INVESTMENT

COMPANIES—99.9%(a)

FIXED

INCOME—38.1%

127,400,888

TIAA-CREF

Bond

Index

Fund

$

1,207,760,422‌

TOTAL

FIXED

INCOME

1,207,760,422‌

INFLATION-PROTECTED

ASSETS—7.4%

22,295,541

TIAA-CREF

Inflation-Linked

Bond

Fund

233,211,360‌

TOTAL

INFLATION-PROTECTED

ASSETS

233,211,360‌

INTERNATIONAL

EQUITY—16.4%

14,976,044

TIAA-CREF

Emerging

Markets

Equity

Index

Fund

155,451,334‌

16,215,858

TIAA-CREF

International

Equity

Index

Fund

363,397,387‌

TOTAL

INTERNATIONAL

EQUITY

518,848,721‌

SHORT-TERM

FIXED

INCOME—7.3%

24,412,320

TIAA-CREF

Short-Term

Bond

Index

Fund

233,137,654‌

TOTAL

SHORT-TERM

FIXED

INCOME

233,137,654‌

U.S.

EQUITY—30.7%

27,129,633

TIAA-CREF

Equity

Index

Fund

973,953,842‌

TOTAL

U.S.

EQUITY

973,953,842‌

TOTAL

AFFILIATED

INVESTMENT

COMPANIES

3,166,911,999‌

(Cost

$2,603,665,571)

TOTAL

INVESTMENTS—99.9%

3,166,911,999‌

(Cost

$2,603,665,571)

OTHER

ASSETS

&

LIABILITIES,

NET—0.1%

2,558,680‌

NET

ASSETS—100.0%

$

3,169,470,679‌

(a)

The

Fund

invests

its

assets

in

Class

W

shares

of

the

affiliated

TIAA-CREF

Funds.

Portfolio

of

Investments

Lifecycle

Index

2025

Fund

February

29,

2024

5

See

Notes

to

Portfolios

of

Investments

(Unaudited)

SHARES

DESCRIPTION

VALUE

AFFILIATED

INVESTMENT

COMPANIES—99.9%(a)

FIXED

INCOME—36.2%

229,577,112

TIAA-CREF

Bond

Index

Fund

$

2,176,391,021‌

TOTAL

FIXED

INCOME

2,176,391,021‌

INFLATION-PROTECTED

ASSETS—5.4%

30,841,905

TIAA-CREF

Inflation-Linked

Bond

Fund

322,606,325‌

TOTAL

INFLATION-PROTECTED

ASSETS

322,606,325‌

INTERNATIONAL

EQUITY—18.4%

31,864,644

TIAA-CREF

Emerging

Markets

Equity

Index

Fund

330,755,000‌

34,508,737

TIAA-CREF

International

Equity

Index

Fund

773,340,801‌

TOTAL

INTERNATIONAL

EQUITY

1,104,095,801‌

SHORT-TERM

FIXED

INCOME—5.4%

33,769,109

TIAA-CREF

Short-Term

Bond

Index

Fund

322,494,990‌

TOTAL

SHORT-TERM

FIXED

INCOME

322,494,990‌

U.S.

EQUITY—34.5%

57,753,757

TIAA-CREF

Equity

Index

Fund

2,073,359,858‌

TOTAL

U.S.

EQUITY

2,073,359,858‌

TOTAL

AFFILIATED

INVESTMENT

COMPANIES

5,998,947,995‌

(Cost

$4,939,649,208)

PRINCIPAL

RATE

MATURITY

DATE

SHORT-TERM

INVESTMENTS—0.1%

REPURCHASE

AGREEMENT—0.1%

$6,180,000

(b)

Fixed

Income

Clearing

Corp

(FICC)

5

.310

%

03/01/24

6,180,000‌

TOTAL

REPURCHASE

AGREEMENT

6,180,000‌

TOTAL

SHORT-TERM

INVESTMENTS

6,180,000‌

(Cost

$6,180,000)

TOTAL

INVESTMENTS—100.0%

6,005,127,995‌

(Cost

$4,945,829,208)

OTHER

ASSETS

&

LIABILITIES,

NET—0.0%

2,013,966‌

NET

ASSETS—100.0%

$

6,007,141,961‌

(a)

The

Fund

invests

its

assets

in

Class

W

shares

of

the

affiliated

TIAA-CREF

Funds.

(b)

Agreement

with

Fixed

Income

Clearing

Corp

(FICC),

5.310%

dated

2/29/24

to

be

repurchased

at

$6,180,912

on

3/1/24,

collateralized

by

Government

Agency

Securities,

with

coupon

rate

3.750%

and

maturity

date

4/15/26,

valued

at

$6,303,694.

Lifecycle

Index

2030

Fund

February

29,

2024

Portfolio

of

Investments

6

See

Notes

to

Portfolios

of

Investments

(Unaudited)

SHARES

DESCRIPTION

VALUE

AFFILIATED

INVESTMENT

COMPANIES—99.8%(a)

FIXED

INCOME—32.2%

269,449,182

TIAA-CREF

Bond

Index

Fund

$

2,554,378,243‌

TOTAL

FIXED

INCOME

2,554,378,243‌

INFLATION-PROTECTED

ASSETS—3.4%

25,698,741

TIAA-CREF

Inflation-Linked

Bond

Fund

268,808,828‌

TOTAL

INFLATION-PROTECTED

ASSETS

268,808,828‌

INTERNATIONAL

EQUITY—21.1%

48,373,071

TIAA-CREF

Emerging

Markets

Equity

Index

Fund

502,112,477‌

52,386,908

TIAA-CREF

International

Equity

Index

Fund

1,173,990,610‌

TOTAL

INTERNATIONAL

EQUITY

1,676,103,087‌

SHORT-TERM

FIXED

INCOME—3.4%

28,145,651

TIAA-CREF

Short-Term

Bond

Index

Fund

268,790,965‌

TOTAL

SHORT-TERM

FIXED

INCOME

268,790,965‌

U.S.

EQUITY—39.7%

87,677,586

TIAA-CREF

Equity

Index

Fund

3,147,625,328‌

TOTAL

U.S.

EQUITY

3,147,625,328‌

TOTAL

AFFILIATED

INVESTMENT

COMPANIES

7,915,706,451‌

(Cost

$6,386,311,616)

PRINCIPAL

RATE

MATURITY

DATE

SHORT-TERM

INVESTMENTS—0.1%

REPURCHASE

AGREEMENT—0.1%

$7,750,000

(b)

Fixed

Income

Clearing

Corp

(FICC)

5

.310

%

03/01/24

7,750,000‌

TOTAL

REPURCHASE

AGREEMENT

7,750,000‌

TOTAL

SHORT-TERM

INVESTMENTS

7,750,000‌

(Cost

$7,750,000)

TOTAL

INVESTMENTS—99.9%

7,923,456,451‌

(Cost

$6,394,061,616)

OTHER

ASSETS

&

LIABILITIES,

NET—0.1%

7,039,398‌

NET

ASSETS—100.0%

$

7,930,495,849‌

(a)

The

Fund

invests

its

assets

in

Class

W

shares

of

the

affiliated

TIAA-CREF

Funds.

(b)

Agreement

with

Fixed

Income

Clearing

Corp

(FICC),

5.310%

dated

2/29/24

to

be

repurchased

at

$7,751,143

on

3/1/24,

collateralized

by

Government

Agency

Securities,

with

coupon

rate

3.750%

and

maturity

date

4/15/26,

valued

at

$7,905,029.

Portfolio

of

Investments

Lifecycle

Index

2035

Fund

February

29,

2024

7

See

Notes

to

Portfolios

of

Investments

(Unaudited)

SHARES

DESCRIPTION

VALUE

AFFILIATED

INVESTMENT

COMPANIES—99.9%(a)

FIXED

INCOME—27.2%

237,254,991

TIAA-CREF

Bond

Index

Fund

$

2,249,177,318‌

TOTAL

FIXED

INCOME

2,249,177,318‌

INFLATION-PROTECTED

ASSETS—1.4%

11,261,876

TIAA-CREF

Inflation-Linked

Bond

Fund

117,799,226‌

TOTAL

INFLATION-PROTECTED

ASSETS

117,799,226‌

INTERNATIONAL

EQUITY—24.3%

57,999,565

TIAA-CREF

Emerging

Markets

Equity

Index

Fund

602,035,486‌

62,771,231

TIAA-CREF

International

Equity

Index

Fund

1,406,703,282‌

TOTAL

INTERNATIONAL

EQUITY

2,008,738,768‌

SHORT-TERM

FIXED

INCOME—1.4%

12,331,057

TIAA-CREF

Short-Term

Bond

Index

Fund

117,761,592‌

TOTAL

SHORT-TERM

FIXED

INCOME

117,761,592‌

U.S.

EQUITY—45.6%

105,068,238

TIAA-CREF

Equity

Index

Fund

3,771,949,730‌

TOTAL

U.S.

EQUITY

3,771,949,730‌

TOTAL

AFFILIATED

INVESTMENT

COMPANIES

8,265,426,634‌

(Cost

$6,450,414,855)

PRINCIPAL

RATE

MATURITY

DATE

SHORT-TERM

INVESTMENTS—0.1%

REPURCHASE

AGREEMENT—0.1%

$12,220,000

(b)

Fixed

Income

Clearing

Corp

(FICC)

5

.310

%

03/01/24

12,220,000‌

TOTAL

REPURCHASE

AGREEMENT

12,220,000‌

TOTAL

SHORT-TERM

INVESTMENTS

12,220,000‌

(Cost

$12,220,000)

TOTAL

INVESTMENTS—100.0%

8,277,646,634‌

(Cost

$6,462,634,855)

OTHER

ASSETS

&

LIABILITIES,

NET—(0.0)%

(

2,623,999‌

)

NET

ASSETS—100.0%

$

8,275,022,635‌

(a)

The

Fund

invests

its

assets

in

Class

W

shares

of

the

affiliated

TIAA-CREF

Funds.

(b)

Agreement

with

Fixed

Income

Clearing

Corp

(FICC),

5.310%

dated

2/29/24

to

be

repurchased

at

$12,221,802

on

3/1/24,

collateralized

by

Government

Agency

Securities,

with

coupon

rate

3.750%

and

maturity

date

4/15/26,

valued

at

$12,464,484.

Lifecycle

Index

2040

Fund

February

29,

2024

Portfolio

of

Investments

8

See

Notes

to

Portfolios

of

Investments

(Unaudited)

SHARES

DESCRIPTION

VALUE

AFFILIATED

INVESTMENT

COMPANIES—99.9%(a)

FIXED

INCOME—19.3%

176,157,559

TIAA-CREF

Bond

Index

Fund

$

1,669,973,657‌

TOTAL

FIXED

INCOME

1,669,973,657‌

INTERNATIONAL

EQUITY—28.0%

69,982,875

TIAA-CREF

Emerging

Markets

Equity

Index

Fund

726,422,242‌

75,779,335

TIAA-CREF

International

Equity

Index

Fund

1,698,214,894‌

TOTAL

INTERNATIONAL

EQUITY

2,424,637,136‌

U.S.

EQUITY—52.6%

126,818,636

TIAA-CREF

Equity

Index

Fund

4,552,789,037‌

TOTAL

U.S.

EQUITY

4,552,789,037‌

TOTAL

AFFILIATED

INVESTMENT

COMPANIES

8,647,399,830‌

(Cost

$6,408,477,934)

PRINCIPAL

RATE

MATURITY

DATE

SHORT-TERM

INVESTMENTS—0.1%

REPURCHASE

AGREEMENT—0.1%

$10,640,000

(b)

Fixed

Income

Clearing

Corp

(FICC)

5

.310

%

03/01/24

10,640,000‌

TOTAL

REPURCHASE

AGREEMENT

10,640,000‌

TOTAL

SHORT-TERM

INVESTMENTS

10,640,000‌

(Cost

$10,640,000)

TOTAL

INVESTMENTS—100.0%

8,658,039,830‌

(Cost

$6,419,117,934)

OTHER

ASSETS

&

LIABILITIES,

NET—0.0%

1,751,936‌

NET

ASSETS—100.0%

$

8,659,791,766‌

(a)

The

Fund

invests

its

assets

in

Class

W

shares

of

the

affiliated

TIAA-CREF

Funds.

(b)

Agreement

with

Fixed

Income

Clearing

Corp

(FICC),

5.310%

dated

2/29/24

to

be

repurchased

at

$10,641,569

on

3/1/24,

collateralized

by

Government

Agency

Securities,

with

coupon

rate

0.750%

and

maturity

date

3/31/26,

valued

at

$10,852,875.

Portfolio

of

Investments

Lifecycle

Index

2045

Fund

February

29,

2024

9

See

Notes

to

Portfolios

of

Investments

(Unaudited)

SHARES

DESCRIPTION

VALUE

AFFILIATED

INVESTMENT

COMPANIES—99.8%(a)

FIXED

INCOME—12.5%

94,426,873

TIAA-CREF

Bond

Index

Fund

$

895,166,753‌

TOTAL

FIXED

INCOME

895,166,753‌

INTERNATIONAL

EQUITY—30.3%

62,590,884

TIAA-CREF

Emerging

Markets

Equity

Index

Fund

649,693,381‌

67,699,175

TIAA-CREF

International

Equity

Index

Fund

1,517,138,511‌

TOTAL

INTERNATIONAL

EQUITY

2,166,831,892‌

U.S.

EQUITY—57.0%

113,312,224

TIAA-CREF

Equity

Index

Fund

4,067,908,826‌

TOTAL

U.S.

EQUITY

4,067,908,826‌

TOTAL

AFFILIATED

INVESTMENT

COMPANIES

7,129,907,471‌

(Cost

$5,351,486,638)

PRINCIPAL

RATE

MATURITY

DATE

SHORT-TERM

INVESTMENTS—0.1%

REPURCHASE

AGREEMENT—0.1%

$8,610,000

(b)

Fixed

Income

Clearing

Corp

(FICC)

5

.310

%

03/01/24

8,610,000‌

TOTAL

REPURCHASE

AGREEMENT

8,610,000‌

TOTAL

SHORT-TERM

INVESTMENTS

8,610,000‌

(Cost

$8,610,000)

TOTAL

INVESTMENTS—99.9%

7,138,517,471‌

(Cost

$5,360,096,638)

OTHER

ASSETS

&

LIABILITIES,

NET—0.1%

3,787,491‌

NET

ASSETS—100.0%

$

7,142,304,962‌

(a)

The

Fund

invests

its

assets

in

Class

W

shares

of

the

affiliated

TIAA-CREF

Funds.

(b)

Agreement

with

Fixed

Income

Clearing

Corp

(FICC),

5.310%

dated

2/29/24

to

be

repurchased

at

$8,611,270

on

3/1/24,

collateralized

by

Government

Agency

Securities,

with

coupon

rate

3.750%

and

maturity

date

4/15/26,

valued

at

$8,782,280.

Lifecycle

Index

2050

Fund

February

29,

2024

Portfolio

of

Investments

10

See

Notes

to

Portfolios

of

Investments

(Unaudited)

SHARES

DESCRIPTION

VALUE

AFFILIATED

INVESTMENT

COMPANIES—99.8%(a)

FIXED

INCOME—9.4%

59,721,947

TIAA-CREF

Bond

Index

Fund

$

566,164,054‌

TOTAL

FIXED

INCOME

566,164,054‌

INTERNATIONAL

EQUITY—31.4%

54,773,320

TIAA-CREF

Emerging

Markets

Equity

Index

Fund

568,547,063‌

59,239,743

TIAA-CREF

International

Equity

Index

Fund

1,327,562,648‌

TOTAL

INTERNATIONAL

EQUITY

1,896,109,711‌

U.S.

EQUITY—59.0%

99,144,938

TIAA-CREF

Equity

Index

Fund

3,559,303,268‌

TOTAL

U.S.

EQUITY

3,559,303,268‌

TOTAL

AFFILIATED

INVESTMENT

COMPANIES

6,021,577,033‌

(Cost

$4,543,225,022)

PRINCIPAL

RATE

MATURITY

DATE

SHORT-TERM

INVESTMENTS—0.2%

REPURCHASE

AGREEMENT—0.2%

$9,520,000

(b)

Fixed

Income

Clearing

Corp

(FICC)

5

.310

%

03/01/24

9,520,000‌

TOTAL

REPURCHASE

AGREEMENT

9,520,000‌

TOTAL

SHORT-TERM

INVESTMENTS

9,520,000‌

(Cost

$9,520,000)

TOTAL

INVESTMENTS—100.0%

6,031,097,033‌

(Cost

$4,552,745,022)

OTHER

ASSETS

&

LIABILITIES,

NET—0.0%

2,401,603‌

NET

ASSETS—100.0%

$

6,033,498,636‌

(a)

The

Fund

invests

its

assets

in

Class

W

shares

of

the

affiliated

TIAA-CREF

Funds.

(b)

Agreement

with

Fixed

Income

Clearing

Corp

(FICC),

5.310%

dated

2/29/24

to

be

repurchased

at

$9,521,404

on

3/1/24,

collateralized

by

Government

Agency

Securities,

with

coupon

rate

3.750%

and

maturity

date

4/15/26,

valued

at

$9,710,455.

Portfolio

of

Investments

Lifecycle

Index

2055

Fund

August

31,

2023

11

See

Notes

to

Portfolios

of

Investments

(Unaudited)

SHARES

DESCRIPTION

VALUE

AFFILIATED

INVESTMENT

COMPANIES—99.9%(a)

FIXED

INCOME—8.2%

30,633,345

TIAA-CREF

Bond

Index

Fund

$

290,404,110‌

TOTAL

FIXED

INCOME

290,404,110‌

INTERNATIONAL

EQUITY—31.9%

32,719,921

TIAA-CREF

Emerging

Markets

Equity

Index

Fund

339,632,784‌

35,406,193

TIAA-CREF

International

Equity

Index

Fund

793,452,777‌

TOTAL

INTERNATIONAL

EQUITY

1,133,085,561‌

U.S.

EQUITY—59.8%

59,248,534

TIAA-CREF

Equity

Index

Fund

2,127,022,360‌

TOTAL

U.S.

EQUITY

2,127,022,360‌

TOTAL

AFFILIATED

INVESTMENT

COMPANIES

3,550,512,031‌

(Cost

$2,793,688,064)

PRINCIPAL

RATE

MATURITY

DATE

SHORT-TERM

INVESTMENTS—0.1%

REPURCHASE

AGREEMENT—0.1%

$4,630,000

(b)

Fixed

Income

Clearing

Corp

(FICC)

5

.310

%

03/01/24

4,630,000‌

TOTAL

REPURCHASE

AGREEMENT

4,630,000‌

TOTAL

SHORT-TERM

INVESTMENTS

4,630,000‌

(Cost

$4,630,000)

TOTAL

INVESTMENTS—100.0%

3,555,142,031‌

(Cost

$2,798,318,064)

OTHER

ASSETS

&

LIABILITIES,

NET—0.0%

1,271,587‌

NET

ASSETS—100.0%

$

3,556,413,618‌

(a)

The

Fund

invests

its

assets

in

Class

W

shares

of

the

affiliated

TIAA-CREF

Funds.

(b)

Agreement

with

Fixed

Income

Clearing

Corp

(FICC),

5.310%

dated

2/29/24

to

be

repurchased

at

$4,630,683

on

3/1/24,

collateralized

by

Government

Agency

Securities,

with

coupon

rate

3.750%

and

maturity

date

4/15/26,

valued

at

$4,722,688.

Lifecycle

Index

2060

Fund

February

29,

2024

Portfolio

of

Investments

12

See

Notes

to

Portfolios

of

Investments

(Unaudited)

SHARES

DESCRIPTION

VALUE

AFFILIATED

INVESTMENT

COMPANIES—99.8%(a)

FIXED

INCOME—7.0%

14,210,290

TIAA-CREF

Bond

Index

Fund

$

134,713,552‌

TOTAL

FIXED

INCOME

134,713,552‌

INTERNATIONAL

EQUITY—32.3%

18,026,145

TIAA-CREF

Emerging

Markets

Equity

Index

Fund

187,111,382‌

19,504,547

TIAA-CREF

International

Equity

Index

Fund

437,096,897‌

TOTAL

INTERNATIONAL

EQUITY

624,208,279‌

U.S.

EQUITY—60.5%

32,626,140

TIAA-CREF

Equity

Index

Fund

1,171,278,412‌

TOTAL

U.S.

EQUITY

1,171,278,412‌

TOTAL

AFFILIATED

INVESTMENT

COMPANIES

1,930,200,243‌

(Cost

$1,593,214,810)

PRINCIPAL

RATE

MATURITY

DATE

SHORT-TERM

INVESTMENTS—0.2%

REPURCHASE

AGREEMENT—0.2%

$3,780,000

(b)

Fixed

Income

Clearing

Corp

(FICC)

5

.310

%

03/01/24

3,780,000‌

TOTAL

REPURCHASE

AGREEMENT

3,780,000‌

TOTAL

SHORT-TERM

INVESTMENTS

3,780,000‌

(Cost

$3,780,000)

TOTAL

INVESTMENTS—100.0%

1,933,980,243‌

(Cost

$1,596,994,810)

OTHER

ASSETS

&

LIABILITIES,

NET—0.0%

657,721‌

NET

ASSETS—100.0%

$

1,934,637,964‌

(a)

The

Fund

invests

its

assets

in

Class

W

shares

of

the

affiliated

TIAA-CREF

Funds.

(b)

Agreement

with

Fixed

Income

Clearing

Corp

(FICC),

5.310%

dated

2/29/24

to

be

repurchased

at

$3,780,558

on

3/1/24,

collateralized

by

Government

Agency

Securities,

with

coupon

rate

0.750%

and

maturity

date

3/31/26,

valued

at

$3,855,621.

Portfolio

of

Investments

Lifecycle

Index

2065

Fund

February

29,

2024

13

See

Notes

to

Portfolios

of

Investments

(Unaudited)

SHARES

DESCRIPTION

VALUE

AFFILIATED

INVESTMENT

COMPANIES—99.7%(a)

FIXED

INCOME—5.7%

1,756,714

TIAA-CREF

Bond

Index

Fund

$

16,653,647‌

TOTAL

FIXED

INCOME

16,653,647‌

INTERNATIONAL

EQUITY—32.7%

2,733,563

TIAA-CREF

Emerging

Markets

Equity

Index

Fund

28,374,385‌

2,958,239

TIAA-CREF

International

Equity

Index

Fund

66,294,145‌

TOTAL

INTERNATIONAL

EQUITY

94,668,530‌

U.S.

EQUITY—61.3%

4,947,102

TIAA-CREF

Equity

Index

Fund

177,600,960‌

TOTAL

U.S.

EQUITY

177,600,960‌

TOTAL

AFFILIATED

INVESTMENT

COMPANIES

288,923,137‌

(Cost

$256,948,120)

PRINCIPAL

RATE

MATURITY

DATE

SHORT-TERM

INVESTMENTS—0.2%

REPURCHASE

AGREEMENT—0.2%

$610,000

(b)

Fixed

Income

Clearing

Corp

(FICC)

5

.310

%

03/01/24

610,000‌

TOTAL

REPURCHASE

AGREEMENT

610,000‌

TOTAL

SHORT-TERM

INVESTMENTS

610,000‌

(Cost

$610,000)

TOTAL

INVESTMENTS—99.9%

289,533,137‌

(Cost

$257,558,120)

OTHER

ASSETS

&

LIABILITIES,

NET—0.1%

223,707‌

NET

ASSETS—100.0%

$

289,756,844‌

(a)

The

Fund

invests

its

assets

in

Class

W

shares

of

the

affiliated

TIAA-CREF

Funds.

(b)

Agreement

with

Fixed

Income

Clearing

Corp

(FICC),

5.310%

dated

2/29/24

to

be

repurchased

at

$610,090

on

3/1/24,

collateralized

by

Government

Agency

Securities,

with

coupon

rate

0.750%

and

maturity

date

3/31/26,

valued

at

$622,281.

14

Notes

to

Portfolios

of

Investments

(Unaudited)

Organization

and

Significant

Accounting

Policies

Part

F

of

Form

N-PORT

was

prepared in

accordance

with

accounting

principles

generally

accepted

in

the

United

States

of

America

(“U.S.

GAAP”)

and

in

conformity

with

the

applicable

rules

and

regulations

of

the

U.S.

Securities

and

Exchange

Commission related

to

interim

filings. Part

F

of

Form

N-PORT

does

not

include

all

information

and

footnotes

required

by

U.S.

GAAP

for

complete

financial

statements.

Certain

footnote

disclosures

normally

included

in

financial

statements

prepared

in

accordance

with

U.S.

GAAP

have

been

condensed

or

omitted

from

this

report.

For

a

full

set

of

financial

statement

notes,

please

refer

to

the

most

recently

filed

annual

or

semiannual

report.

Valuation

of

Investments

The

Funds' investments

in

securities

are

recorded

at

their

estimated

fair

value

utilizing

valuation

methods

approved

by

the

Adviser,

subject

to

the

review

and

oversight

of

the

Board.

Fair

value

is

defined

as

the

price

that

would

be

received

upon

selling

an

investment

or

transferring

a

liability

in

an

orderly

transaction

to

an

independent

buyer

in

the

principal

or

most

advantageous

market

for

the

investment.

U.S.

GAAP

establishes

the

three-tier

hierarchy

that

is

used

to

maximize

the

use

of

observable

market

data

and

minimize

the

use

of

unobservable

inputs

and

to

establish

classification

of

fair

value

measurements

for

disclosure

purposes.

Observable

inputs

reflect

the

assumptions

market

participants

would

use

in

pricing

the

asset

or

liability.

Observable

inputs

are

based

on

market

data

obtained

from

sources

independent

of

the

reporting

entity.

Unobservable

inputs

reflect

management’s

assumptions

about

the

assumptions

market

participants

would

use

in

pricing

the

asset

or

liability.

Unobservable

inputs

are

based

on

the

best

information

available

in

the

circumstances.

The

following

is

a

summary

of

the

three-tiered

hierarchy

of

valuation

input

levels:

Level

1

–

Inputs

are

unadjusted

and

prices

are

determined

using

quoted

prices

in

active

markets

for

identical

securities.

Level

2

–

Prices

are

determined

using

other

significant

observable

inputs

(including

quoted

prices

for

similar

securities,

interest

rates,

credit

spreads,

etc.).

Level

3

–

Prices

are

determined

using

significant

unobservable

inputs

(including

management’s

assumptions

in

determining

the

fair

value

of

investments).

The

following

table

summarizes

the

market

value

of

the

Funds'

investments

as

of

the

end

of

the

reporting

period,

based

on

the

inputs

used

to

value

them:

Fund

Level

1

Level

2

Level

3

Total

Lifecycle

Index

Retirement

Income

Registered

investment

companies

$712,744,891

$—

$—

$712,744,891

Short-term

investments

—

1,220,000

—

1,220,000

Total

$712,744,891

$1,220,000

$—

$713,964,891

1

1

1

1

1

Lifecycle

Index

2010

Registered

investment

companies

$646,457,176

$—

$—

$646,457,176

Total

$646,457,176

$—

$—

$646,457,176

1

1

1

1

1

Lifecycle

Index

2015

Registered

investment

companies

$1,077,054,142

$—

$—

$1,077,054,142

Short-term

investments

—

220,000

—

220,000

Total

$1,077,054,142

$220,000

$—

$1,077,274,142

1

1

1

1

1

Lifecycle

Index

2020

Registered

investment

companies

$3,166,911,999

$—

$—

$3,166,911,999

Total

$3,166,911,999

$—

$—

$3,166,911,999

1

1

1

1

1

Lifecycle

Index

2025

Registered

investment

companies

$5,998,947,995

$—

$—

$5,998,947,995

Short-term

investments

—

6,180,000

—

6,180,000

Total

$5,998,947,995

$6,180,000

$—

$6,005,127,995

1

1

1

1

1

Lifecycle

Index

2030

Registered

investment

companies

$7,915,706,451

$—

$—

$7,915,706,451

Short-term

investments

—

7,750,000

—

7,750,000

Total

$7,915,706,451

$7,750,000

$—

$7,923,456,451

1

1

1

1

1

Lifecycle

Index

2035

Registered

investment

companies

$8,265,426,634

$—

$—

$8,265,426,634

Short-term

investments

—

12,220,000

—

12,220,000

Total

$8,265,426,634

$12,220,000

$—

$8,277,646,634

1

1

1

1

1

Lifecycle

Index

2040

Registered

investment

companies

$8,647,399,830

$—

$—

$8,647,399,830

Short-term

investments

—

10,640,000

—

10,640,000

Total

$8,647,399,830

$10,640,000

$—

$8,658,039,830

1

1

1

1

1

15

Fund

Level

1

Level

2

Level

3

Total

Lifecycle

Index

2045

Registered

investment

companies

$7,129,907,471

$—

$—

$7,129,907,471

Short-term

investments

—

8,610,000

—

8,610,000

Total

$7,129,907,471

$8,610,000

$—

$7,138,517,471

1

1

1

1

1

Lifecycle

Index

2050

Registered

investment

companies

$6,021,577,033

$—

$—

$6,021,577,033

Short-term

investments

—

9,520,000

—

9,520,000

Total

$6,021,577,033

$9,520,000

$—

$6,031,097,033

1

1

1

1

1

Lifecycle

Index

2055

Registered

investment

companies

$3,550,512,031

$—

$—

$3,550,512,031

Short-term

investments

—

4,630,000

—

4,630,000

Total

$3,550,512,031

$4,630,000

$—

$3,555,142,031

1

1

1

1

1

Lifecycle

Index

2060

Registered

investment

companies

$1,930,200,243

$—

$—

$1,930,200,243

Short-term

investments

—

3,780,000

—

3,780,000

Total

$1,930,200,243

$3,780,000

$—

$1,933,980,243

1

1

1

1

1

Lifecycle

Index

2065

Registered

investment

companies

$288,923,137

$—

$—

$288,923,137

Short-term

investments

—

610,000

—

610,000

Total

$288,923,137

$610,000

$—

$289,533,137

1

1

1

1

1

A12147-D

(10/23)