ETF and Mutual Fund Analysis

Holdings as of August 12, 2026

ETF and Mutual Fund Analysis

Overlap, Comparison, and Diversification for Your Portfolio

Home > Compare > SPMB vs SPSB Holdings as of August 12, 2026

SPMB vs SPSB: Portfolio Overlap

State Street(R) SPDR(R) Portfolio Mortgage Backed Bond ETF vs State Street(R) SPDR(R) Portfolio Short Term Corporate Bond ETF

0.2%
Weighted portfolio overlap
Low Overlap

Low Overlap. The two portfolios have highly distinct allocations: little of the weight sits in the same stocks.

SPMB
2722 equity holdings
as of August 12, 2026
SPSB
1635 equity holdings
as of August 12, 2026
1 stocks held in common
Overlap View Venn Diagram
0.2% OVERLAP SPMB SPSB
Overlapping Holdings
1 Sorted by overlap contribution
# Stock SPMB SPSB Overlap%
1
SSI US GOV MONEY MARKET CLASS
 6.61% 0.18% 0.18%
Most Divergent Holdings Stocks held by one fund but absent from the other
Only in SPMB — State Street(R) SPDR(R) Portfolio Mortgage Backed Bond ETF
StockWeight
FED HM LN PC POOL RQ0094 FR 02/56 FIXED 51.08%
FNMA TBA 30 YR 5.5 SINGLE FAMILY MORTGAGE0.91%
FNMA TBA 30 YR 5 SINGLE FAMILY MORTGAGE0.77%
FNMA POOL MA4547 FN 02/52 FIXED 20.72%
FED HM LN PC POOL RQ0041 FR 08/55 FIXED 60.70%
Only in SPSB — State Street(R) SPDR(R) Portfolio Short Term Corporate Bond ETF
StockWeight
SALESFORCE INC SR UNSECURED 03/29 4.650.64%
AERCAP IRELAND CAP/GLOBA COMPANY GUAR 10/28 30.46%
BANK OF AMERICA CORP SR UNSECURED 12/28 VAR0.45%
PFIZER INVESTMENT ENTER COMPANY GUAR 05/28 4.450.36%
GOLDMAN SACHS GROUP INC SR UNSECURED 05/29 VAR0.36%

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Frequently Asked Questions (FAQs)
What is the portfolio overlap between SPMB and SPSB?

SPMB (State Street(R) SPDR(R) Portfolio Mortgage Backed Bond ETF) and SPSB (State Street(R) SPDR(R) Portfolio Short Term Corporate Bond ETF) share 0.2% portfolio overlap as of their August 12, 2026 filings, across 1 common stock. Overlap is the sum of the smaller weight of each shared stock, so it reads as the share of a dollar that lands on the same companies in both funds.

Do SPMB and SPSB invest in the same stocks?

Mostly not. Only a small portion of their portfolios overlaps — these funds hold largely different stocks and genuinely diversify each other.

What are the top stocks held by both SPMB and SPSB?

The most prominent shared holdings (by combined weight) are: SSI US GOV MONEY MARKET CLASS. See the full common-holdings table on this page for weights in each fund.

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