Schedule of Investments  (unaudited) April 30, 2021 iShares^® ESG Aware Aggressive Allocation ETF (Percentages shown are based on Net Assets)

Security	Shares		Value
Investment Companies
Domestic Equity — 79.8% iShares ESG Aware MSCI EAFE ETF(a)		45,462	$	3,550,127
iShares ESG Aware MSCI EM ETF(a)		39,772		1,748,775
iShares ESG Aware MSCI USA ETF(a)		83,888		8,012,143
iShares ESG Aware MSCI USA Small-Cap ETF(a)		25,877		1,033,010
				14,344,055
Domestic Fixed Income — 20.0%
iShares ESG Aware U.S. Aggregate Bond ETF(a)		65,628		3,599,696
Total Investment Companies — 99.8% (Cost: $16,871,708)				17,943,751
Short-Term Investments
Money Market Funds — 0.2%
BlackRock Cash Funds: Treasury, SL Agency Shares, 0.00%(a)(b)		30,000		30,000
Total Short-Term Investments — 0.2% (Cost: $30,000)				30,000
Total Investments in Securities — 100.0% (Cost: $16,901,708)				17,973,751
Other Assets, Less Liabilities — (0.0)%				(2,119	)
Net Assets — 100.0%			$	17,971,632

^(a)  Affiliate of the Fund.

^(b)  Annualized 7-day yield as of period-end.

Affiliates

Investments in issuers considered to be affiliate(s) of the Fund during the period ended April 30, 2021 for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:

Affiliated Issuer	Value at 07/31/20		Purchases at Cost			Proceeds from Sales			Net Realized Gain (Loss)			Change in Unrealized Appreciation (Depreciation)			Value at 04/30/21		Shares Held at 04/30/21		Income			Capital Gain Distributions from Underlying Funds
BlackRock Cash Funds: Institutional, SL Agency Shares(a)	$	—	$	0	(b)	$	—		$	—		$	—		$	—		—	$	332	(c)	$	—
BlackRock Cash Funds: Treasury, SL Agency Shares		—		30,000	(b)		—			—			—			30,000		30,000		5			—
iShares ESG Aware MSCI EAFE ETF(d)		854,462		2,971,183			(573,993	)		104,647			193,828			3,550,127		45,462		7,934			—
iShares ESG Aware MSCI EM ETF(e)		389,651		1,455,075			(172,651	)		(2,202	)		78,902			1,748,775		39,772		3,686			—
iShares ESG Aware MSCI USA ETF(f)		1,845,048		6,469,751			(1,174,776	)		282,599			589,521			8,012,143		83,888		37,783			—
iShares ESG Aware MSCI USA Small-Cap ETF(g)		199,959		876,600			(168,505	)		57,050			67,906			1,033,010		25,877		4,169			—
iShares ESG Aware U.S. Aggregate Bond ETF		708,536		2,933,020			—			—			(41,860	)		3,599,696		65,628		10,818			—
									$	442,094		$	888,297		$	17,973,751			$	64,727		$	—

^(a)  As of period end, the entity is no longer held.

^(b)  Represents net amount purchased (sold).

^(c)  All or a portion represents securities lending income earned from the reinvestment of cash collateral from loaned securities, net of fees and collateral investment expenses, and other payments to and from borrowers of securities.

^(d)  Formerly the iShares ESG MSCI EAFE ETF.

^(e)  Formerly the iShares ESG MSCI EM ETF.

^(f)  Formerly the iShares ESG MSCI USA ETF.

^(g)  Formerly the iShares ESG MSCI USA Small-Cap ETF.

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Schedule of Investments  (unaudited) (continued) April 30, 2021 iShares^® ESG Aware Aggressive Allocation ETF

Fair Value Measurements

Various inputs are used in determining the fair value of financial instruments. For description of the input levels and information about the Fund’s policy regarding valuation of financial instruments, refer to a recently published shareholder report. Shareholder reports are available on the Fund’s website at iShares.com and on the U.S. Securities and Exchange Commission website at sec.gov.

The following table summarizes the value of the Fund’s investments according to the fair value hierarchy as of April 30, 2021. The breakdown of the Fund’s investments into major categories is disclosed in the Schedule of Investments above.

	Level 1		Level 2		Level 3		Total
Investments
Assets
Investment Companies	$	17,943,751	$	—	$	—	$	17,943,751
Money Market Funds		30,000		—		—		30,000
	$	17,973,751	$	—	$	—	$	17,973,751

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