What are the top holdings of CMBS?

iShares CMBS ETF holds 442 securities in total. The largest positions and their portfolio weights are listed on the Holdings tab.

How many holdings does CMBS have?

CMBS holds 442 positions as reported by the fund's most recent disclosure.

What sectors does CMBS invest in?

iShares CMBS ETF (CMBS) allocates across the sectors shown above. The largest exposure tops the list; the rest follow in descending weight order.

What sector is CMBS most exposed to?

CMBS's full sector breakdown is on the Sectors tab. The largest sector weight is shown there along with the rest of the allocation.

Is CMBS a US-only fund?

The country allocation card on this page shows CMBS's geographic exposure. Funds with > 95% US weight are effectively US-only; international or global funds will show meaningful weights across multiple countries.

What does CMBS invest in?

The iShares CMBS ETF's objective is to match the returns generated by an index that comprises only commercial mortgage-backed securities with investment-grade ratings.

CMBS

iShares CMBS ETF

AMEX·Asset Management, Bonds · Financial Services

$47.61$0.06+0.13%

Oct 29 9:30 AM EDT

Portfolio as of July 31, 2026, from the fund's SEC Form N-PORT filing. Funds disclose holdings quarterly, with a ~60-day publication delay. Sector breakdowns aren't part of this filing, so none is shown.

Top Holdings

465

holdings

3137FX3Q9
FHLMC Multifamily Structured Pass Through Certs.
1.25%
3137HCXK3
FHLMC Multifamily Structured Pass Through Certs.
1.13%
3137FTBM8
FHLMC Multifamily Structured Pass Through Certs.
1.10%
3136BXM35
Fanniemae-Aces
0.92%
066922477
BLACKROCK CASH FUNDS TREASURY SL AGENCY SHARES
0.91%
3137FPHK4
FHLMC Multifamily Structured Pass Through Certs.
0.89%
3136BMXZ6
Fanniemae-Aces
0.86%
3137HLJ52
FHLMC Multifamily Structured Pass Through Certs.
0.85%
3137FCJK1
FHLMC Multifamily Structured Pass Through Certs.
0.74%
05555PAB8
Barclays Commercial Mortgage Securities LLC
0.72%
Other
455 more holdings
90.34%

Top 10 holdings

9.38%

Top 25 holdings

18.45%

Concentration index

0.0035

Effective holdings

288

Chart tools

Open Top Holdings in Chart Builder to fine-tune colors, labels, and timeframe, then download a high-res PNG.

All Holdings (465)

#	TickerHolding	Name	Weight	Shares	Market Value
1	3137FX3Q93137FX3Q9FHLMC Multifamily Structured Pass Through Certs.	FHLMC Multifamily Structured Pass Through Certs.	1.25%	6.68M	$5.90M
2	3137HCXK33137HCXK3FHLMC Multifamily Structured Pass Through Certs.	FHLMC Multifamily Structured Pass Through Certs.	1.13%	5.33M	$5.36M
3	3137FTBM83137FTBM8FHLMC Multifamily Structured Pass Through Certs.	FHLMC Multifamily Structured Pass Through Certs.	1.10%	5.75M	$5.18M
4	3136BXM353136BXM35Fanniemae-Aces	Fanniemae-Aces	0.92%	5.00M	$4.34M
5	066922477066922477BLACKROCK CASH FUNDS TREASURY SL AGENCY SHARES	BLACKROCK CASH FUNDS TREASURY SL AGENCY SHARES	0.91%	4.32M	$4.32M
6	3137FPHK43137FPHK4FHLMC Multifamily Structured Pass Through Certs.	FHLMC Multifamily Structured Pass Through Certs.	0.89%	4.50M	$4.23M
7	3136BMXZ63136BMXZ6Fanniemae-Aces	Fanniemae-Aces	0.86%	4.69M	$4.08M
8	3137HLJ523137HLJ52FHLMC Multifamily Structured Pass Through Certs.	FHLMC Multifamily Structured Pass Through Certs.	0.85%	4.00M	$4.01M
9	3137FCJK13137FCJK1FHLMC Multifamily Structured Pass Through Certs.	FHLMC Multifamily Structured Pass Through Certs.	0.74%	3.54M	$3.49M
10	05555PAB805555PAB8Barclays Commercial Mortgage Securities LLC	Barclays Commercial Mortgage Securities LLC	0.72%	3.47M	$3.43M
11	3137HAAG13137HAAG1FHLMC Multifamily Structured Pass Through Certs.	FHLMC Multifamily Structured Pass Through Certs.	0.71%	3.50M	$3.37M
12	3137HPUE13137HPUE1FHLMC Multifamily Structured Pass Through Certs.	FHLMC Multifamily Structured Pass Through Certs.	0.71%	3.50M	$3.35M
13	3137FMTY83137FMTY8FHLMC Multifamily Structured Pass Through Certs.	FHLMC Multifamily Structured Pass Through Certs.	0.69%	3.42M	$3.27M
14	22945DAG822945DAG8CSAIL Commercial Mortgage Trust	CSAIL Commercial Mortgage Trust	0.67%	3.25M	$3.17M
15	09661XAB409661XAB4BMO Mortgage Trust	BMO Mortgage Trust	0.63%	3.00M	$3.00M
16	3137HHHY03137HHHY0FHLMC Multifamily Structured Pass Through Certs.	FHLMC Multifamily Structured Pass Through Certs.	0.62%	3.00M	$2.92M
17	05491UBD905491UBD9Barclays Commercial Mortgage Securities LLC	Barclays Commercial Mortgage Securities LLC	0.61%	2.93M	$2.89M
18	3137HMCA63137HMCA6FHLMC Multifamily Structured Pass Through Certs.	FHLMC Multifamily Structured Pass Through Certs.	0.61%	3.00M	$2.88M
19	36257UAK336257UAK3GS Mortgage Securities Trust	GS Mortgage Securities Trust	0.60%	3.00M	$2.82M
20	3137FK4M53137FK4M5FHLMC Multifamily Structured Pass Through Certs.	FHLMC Multifamily Structured Pass Through Certs.	0.59%	2.82M	$2.79M

Showing 20 of 465

Sectors

sectors

CMBS
99.33%
Cash and/or Derivatives
0.67%

Top 3 sectors

100.00%

Top 5 sectors

100.00%

Concentration index

0.9867

Effective sectors

Chart tools

Open Sector Allocation in Chart Builder to fine-tune colors, labels, and timeframe, then download a high-res PNG.

Countries

Domicile

United States · 99.72%

Asset Classes

Primary asset class

Fixed income

Strategy

Passive Index

Income strategy

Bond yield

Issuer-reported asset class: Fixed Income

Frequently Asked Questions About CMBS

What are the top holdings of CMBS?: iShares CMBS ETF holds 442 securities in total. The largest positions and their portfolio weights are listed on the Holdings tab.
How many holdings does CMBS have?: CMBS holds 442 positions as reported by the fund's most recent disclosure.
What sectors does CMBS invest in?: iShares CMBS ETF (CMBS) allocates across the sectors shown above. The largest exposure tops the list; the rest follow in descending weight order.
What sector is CMBS most exposed to?: CMBS's full sector breakdown is on the Sectors tab. The largest sector weight is shown there along with the rest of the allocation.
Is CMBS a US-only fund?: The country allocation card on this page shows CMBS's geographic exposure. Funds with > 95% US weight are effectively US-only; international or global funds will show meaningful weights across multiple countries.
What does CMBS invest in?: The iShares CMBS ETF's objective is to match the returns generated by an index that comprises only commercial mortgage-backed securities with investment-grade ratings.

TickerHolding

Name

Weight

Market Value

3137FX3Q93137FX3Q9FHLMC Multifamily Structured Pass Through Certs.

FHLMC Multifamily Structured Pass Through Certs.

1.25%

6.68M

$5.90M

3137HCXK33137HCXK3FHLMC Multifamily Structured Pass Through Certs.

FHLMC Multifamily Structured Pass Through Certs.

1.13%

5.33M

$5.36M

3137FTBM83137FTBM8FHLMC Multifamily Structured Pass Through Certs.

FHLMC Multifamily Structured Pass Through Certs.

1.10%

5.75M

$5.18M

3136BXM353136BXM35Fanniemae-Aces

Fanniemae-Aces

0.92%

5.00M

$4.34M

066922477066922477BLACKROCK CASH FUNDS TREASURY SL AGENCY SHARES

BLACKROCK CASH FUNDS TREASURY SL AGENCY SHARES

0.91%

4.32M

$4.32M

3137FPHK43137FPHK4FHLMC Multifamily Structured Pass Through Certs.

FHLMC Multifamily Structured Pass Through Certs.

0.89%

4.50M

$4.23M

3136BMXZ63136BMXZ6Fanniemae-Aces

Fanniemae-Aces

0.86%

4.69M

$4.08M

3137HLJ523137HLJ52FHLMC Multifamily Structured Pass Through Certs.

FHLMC Multifamily Structured Pass Through Certs.

0.85%

4.00M

$4.01M

3137FCJK13137FCJK1FHLMC Multifamily Structured Pass Through Certs.

FHLMC Multifamily Structured Pass Through Certs.

0.74%

3.54M

$3.49M

05555PAB805555PAB8Barclays Commercial Mortgage Securities LLC

Barclays Commercial Mortgage Securities LLC

0.72%

3.47M

$3.43M

3137HAAG13137HAAG1FHLMC Multifamily Structured Pass Through Certs.

FHLMC Multifamily Structured Pass Through Certs.

0.71%

3.50M

$3.37M

3137HPUE13137HPUE1FHLMC Multifamily Structured Pass Through Certs.

FHLMC Multifamily Structured Pass Through Certs.

0.71%

3.50M

$3.35M

3137FMTY83137FMTY8FHLMC Multifamily Structured Pass Through Certs.

FHLMC Multifamily Structured Pass Through Certs.

0.69%

3.42M

$3.27M

22945DAG822945DAG8CSAIL Commercial Mortgage Trust

CSAIL Commercial Mortgage Trust

0.67%

3.25M

$3.17M

09661XAB409661XAB4BMO Mortgage Trust

BMO Mortgage Trust

0.63%

3.00M

$3.00M

3137HHHY03137HHHY0FHLMC Multifamily Structured Pass Through Certs.

FHLMC Multifamily Structured Pass Through Certs.

0.62%

3.00M

$2.92M

05491UBD905491UBD9Barclays Commercial Mortgage Securities LLC

Barclays Commercial Mortgage Securities LLC

0.61%

2.93M

$2.89M

3137HMCA63137HMCA6FHLMC Multifamily Structured Pass Through Certs.

FHLMC Multifamily Structured Pass Through Certs.

0.61%

3.00M

$2.88M

36257UAK336257UAK3GS Mortgage Securities Trust

GS Mortgage Securities Trust

0.60%

3.00M

$2.82M

3137FK4M53137FK4M5FHLMC Multifamily Structured Pass Through Certs.

FHLMC Multifamily Structured Pass Through Certs.

0.59%

2.82M

$2.79M