Security
Shares
Value
a
Investment
Companies
(a)
Domestic
Equity
—
36
.5
%
iShares
Core
S&P
500
ETF
..................
1,297,915
$
654,720,243
iShares
Core
S&P
Mid-Cap
ETF
...............
704,650
40,256,655
iShares
Core
S&P
Small-Cap
ETF
.............
167,337
17,468,309
712,445,207
a
Domestic
Fixed
Income
—
34
.0
%
iShares
Core
Total
USD
Bond
Market
ETF
........
14,941,313
662,946,058
a
International
Equity
—
23
.4
%
iShares
Core
MSCI
Emerging
Markets
ETF
.......
2,306,991
119,156,085
iShares
Core
MSCI
International
Developed
Markets
ETF
................................
5,186,815
336,728,030
455,884,115
a
International
Fixed
Income
—
6
.0
%
iShares
Core
International
Aggregate
Bond
ETF
(b)
...
2,372,133
117,278,255
a
Total
Long-Term
Investments — 99.9%
(Cost:
$
1,933,641,510
)
...............................
1,948,553,635
Security
Shares
Value
a
Short-Term
Securities
Money
Market
Funds
—
0
.3
%
BlackRock
Cash
Funds:
Institutional,
SL
Agency
Shares
,
5.49
%
(a)
(c)
(d)
......................
2,887,734
$
2,888,600
BlackRock
Cash
Funds:
Treasury,
SL
Agency
Shares
,
5.28
%
(a)
(c)
............................
1,921,037
1,921,037
a
Total
Short-Term
Securities — 0.3%
(Cost:
$
4,809,637
)
..................................
4,809,637
Total
Investments
—
100.2%
(Cost:
$
1,938,451,147
)
...............................
1,953,363,272
Liabilities
in
Excess
of
Other
Assets
—
(
0
.2
)
%
...............
(
3,680,214
)
Net
Assets
—
100.0%
.................................
$
1,949,683,058
(a)
Affiliate
of
the
Fund.
(b)
All
or
a
portion
of
this
security
is
on
loan.
(c)
Annualized
7-day
yield
as
of
period
end.
(d)
All
or
a
portion
of
this
security
was
purchased
with
the
cash
collateral
from
loaned
securities.
Affiliates
Investments
in
issuers
considered
to
be
affiliate(s)
of
the
Fund
during
the
period
ended
April
30,
2024
for
purposes
of
Section
2(a)(3)
of
the
Investment
Company
Act
of
1940,
as
amended,
were
as
follows:
Affiliated
Issuer
Value
at
07/31/23
Purchases
at
Cost
Proceeds
from
Sale
Net
Realized
Gain
(Loss)
Change
in
Unrealized
Appreciation
(Depreciation)
Value
at
04/30/24
Shares
Held
at
04/30/24
Income
Capital
Gain
Distributions
from
Underlying
Funds
BlackRock
Cash
Funds:
Institutional,
SL
Agency
Shares
$
—
$
2,886,991
(a)
$
—
$
1,609
$
—
$
2,888,600
2,887,734
$
24,226
(b)
$
—
BlackRock
Cash
Funds:
Treasury,
SL
Agency
Shares
.....
3,504,508
—
(
1,583,471
)
(a)
—
—
1,921,037
1,921,037
166,438
—
iShares
Core
International
Aggregate
Bond
ETF
.......
111,382,020
37,028,129
(
31,257,034
)
(
420,925
)
546,065
117,278,255
2,372,133
4,416,826
—
iShares
Core
MSCI
Emerging
Markets
ETF
.
126,663,234
31,850,345
(
38,372,965
)
(
585,534
)
(
398,995
)
119,156,085
2,306,991
2,742,031
—
iShares
Core
MSCI
International
Developed
Markets
ETF
.
351,301,792
85,043,248
(
113,228,798
)
6,856,014
6,755,774
336,728,030
5,186,815
5,526,161
—
iShares
Core
S&P
500
ETF
....
649,492,070
152,594,548
(
211,829,458
)
29,064,788
35,398,295
654,720,243
1,297,915
8,124,151
—
iShares
Core
S&P
Mid-Cap
ETF
.
39,917,768
11,191,751
(
13,563,614
)
1,334,281
1,376,469
40,256,655
704,650
503,559
—
iShares
Core
S&P
Small-Cap
ETF
17,172,312
5,369,496
(
5,373,073
)
485,795
(
186,221
)
17,468,309
167,337
191,467
—
iShares
Core
Total
USD
Bond
Market
ETF
..
615,867,167
217,583,379
(
160,639,532
)
3,477,887
(
13,342,843
)
662,946,058
14,941,313
18,031,824
—
$
40,213,915
$
30,148,544
$
1,953,363,272
$
39,726,683
$
—