SPMB's largest holdings are Freddie Mac Pool, State Street Institutional US Government Money Market Fund, Fannie Mae, Freddie Mac Pool, Fannie Mae or Freddie Mac 5.5 07/15/2033. The full top list is on this page.

How concentrated is SPMB?

The top 10 holdings are 6.7% of the fund, across 2,701 positions.

The total expense ratio on record is 0.04%. That is cheaper than 94% of the 864 US-listed bond funds we track.

US-listed

SPMB

State Street(R) SPDR(R) Portfolio Mortgage Backed Bond ETF

State Street (SPDR)

2,701 holdings as of 2026-06-30 · top 10 = 6.7% · TER 0.04%

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Concentration

Well diversifiedtop 10 = 6.7%

diversifiedconcentrated

GROWTH · NAV (USD)rebased to 0%

Holdings

2,701

as of 2026-06-30

Top 10

6.7%

TER

0.04%

cheaper than 94% of peers

Net assets

US$7.09B

reported in USD

Largest

7.2%

P / E

–

Sections

Holdings as of 2026-06-30.

01Overview

the fund's regulatory facts

Fund currency

USD

Volatility 1Y

4.4%

02Performance

market price return · as of 2026-09-11

-2.0%

-3.1%

-3.5%

YTD

-3.8%

-4.1%

03Holdings

50 largest · as of 2026-06-30

#	Company	Identifier	Weight
1	Freddie Mac Pool US	US3142J6C840	1.1
2	State Street Institutional US Government Money Market Fund US	GVMXX	1.0
3	Fannie Mae US	US31418EBR09	0.7
4	Freddie Mac Pool US	US3142J6BK85	0.7
5	Fannie Mae or Freddie Mac 5.5 07/15/2033 US	FNCL	0.6
6	Freddie Mac US	FRSD8212	0.6
7	Freddie Mac Pool US	US3132DWMY65	0.5
8	Government National Mortgage Association US	US3618N5PJ27	0.5
9	Fannie Mae Pool US	US31418EGK01	0.5
10	FNMA POOL FA0608 US	US3140W0VA03	0.5
11	Fannie Mae US	FNMA4465	0.4
12	Fannie Mae or Freddie Mac 3.5 07/15/2041 US	FNCL	0.4
13	UMBS 30YR 5.0 MBS-TBA 7/26 US	FNCL	0.4
14	Fannie Mae US	US3140XHHS99	0.4
15	Government National Mortgage A 5.5 07/15/2033 US	G2SF	0.4
16	Freddie Mac US	US3132DWC684	0.4
17	Federal Home Loan Mortgage Corp. US	US3132DWKV45	0.4
18	Freddie Mac Pool US	US3132DWCN11	0.4
19	Government National Mortgage A 5 06/20/2056 US	US3618N6K636	0.4
20	Freddie Mac 5 05/01/2056 US	FRRQ0118	0.4
21	Ginnie Mae II Pool US	US3618N56H72	0.4
22	Freddie Mac US	US3132DWCC55	0.4
23	Freddie Mac Pool US	US3142J6B289	0.4
24	Fannie Mae or Freddie Mac 4.5 07/15/2033 US	FNCL	0.4
25	Freddie Mac Pool US	US3132DWMB62	0.4
26	FNMA POOL CC0119 US	US3140Y6DZ06	0.4
27	Fannie Mae US	FNMA4437	0.4
28	Ginnie Mae II Pool US	US3618N5MP14	0.3
29	Freddie Mac Pool US	US3142J6BJ13	0.3
30	Government National Mortgage A 5 07/15/2033 US	G2SF	0.3
31	Fannie Mae US	US31418ED649	0.3
32	Fannie Mae US	US3140QTEJ49	0.3
33	Fannie Mae US	FNMA4512	0.3
34	Freddie Mac Pool US	FRSD8121	0.3
35	Freddie Mac Pool US	FRSD8178	0.3
36	Fannie Mae US	FNMA5038	0.3
37	Freddie Mac US	US31427PJR64	0.3
38	Ginnie Mae II Pool US	US3618N5EU90	0.3
39	Freddie Mac Pool US	FR	0.3
40	Government National Mortgage Association US	US3618N5C643	0.3
41	Freddie Mac Pool US	US3132DWEQ24	0.3
42	Freddie Mac Pool US	US3132DWAF05	0.3
43	Fannie Mae US	US31418FBP18	0.3
44	Fannie Mae US	FNMA4515	0.3
45	GNMA II POOL MB1070 US	US3618N6FL65	0.3
46	Freddie Mac US	US3133B0QP10	0.3
47	Ginnie Mae II Pool US	US3618N5RF86	0.3
48	Freddie Mac Pool US	US3132DWNH24	0.3
49	UMBS 30YR 2.5 MBS-TBA 7/26 US	FNCL	0.3
50	Fannie Mae Pool US	US31418FEA12	0.3

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04Exposure

Bonds 91.9%Cash 7.7%

By country

USUnited States106.3%

CurrencyUSD 106.3%

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