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MF · holdings as filed 2026-06-30

What's inside BBMUX?

Bridge Builder Municipal Bond Fund
Holdings
5,793
positions in the fund
Top 10
4%
of fund assets
Expense ratio
0.12%
net, per year
Fund size
$21B
total net assets

Top 20 holdings

RankLogoTicker / NameWeight
1
F
FRGXXFIDELITY INV MMKT GOVT-INST
0.96%
2
BOND
Southeast Energy-E
0.46%
3
BOND
Ky Pub Energy Auth-B-
0.38%
4
BOND
Ca Cmnty Choice-B
0.30%
5
BOND
Restructured-Ser A-2
0.28%
6
BOND
Miami-Dade Co-A-Amt
0.27%
7
BOND
Chicago Il Brd Of Edu
0.26%
8
BOND
Main Street Energy-A
0.25%
9
BOND
Black Belt Energy-J
0.25%
10
BOND
Univ Of Tx Sys-B-2
0.24%
11
BOND
Tn Energy Acq Corp-A
0.24%
12
BOND
Harris Co Cultural-A
0.24%
13
BOND
Se Energy Auth-C
0.23%
14
BOND
Tarrant Cultural-C-2
0.23%
15
BOND
San Francisco-C-Ref
0.22%
16
BOND
Main St Nat Gas-E-2
0.21%
17
BOND
S E Energy-B-Rev
0.21%
18
BOND
Las Vegas Vly Wtr Dt
0.21%
19
BOND
Texas Gas Acq & Sply
0.21%
20
BOND
New York Transprtn-A
0.21%
Sectors tap a row to see its top 10 holdings
Top holdings — Bonds & Fixed Income
Your 10 largest positions in this sector
1
BOND
Southeast Energy-E
0.46%
2
BOND
Ky Pub Energy Auth-B-
0.38%
3
BOND
Ca Cmnty Choice-B
0.30%
4
BOND
Restructured-Ser A-2
0.28%
5
BOND
Miami-Dade Co-A-Amt
0.27%
6
BOND
Chicago Il Brd Of Edu
0.26%
7
BOND
Main Street Energy-A
0.25%
8
BOND
Black Belt Energy-J
0.25%
9
BOND
Univ Of Tx Sys-B-2
0.24%
10
BOND
Tn Energy Acq Corp-A
0.24%
Geography tap a row to see its top 10 holdings
Top holdings — United States
Your 10 largest positions in this country
1
F
FRGXXFIDELITY INV MMKT GOVT-INST
0.96%
2
BOND
Southeast Energy-E
0.46%
3
BOND
Ky Pub Energy Auth-B-
0.38%
4
BOND
Ca Cmnty Choice-B
0.30%
5
BOND
Restructured-Ser A-2
0.28%
6
BOND
Miami-Dade Co-A-Amt
0.27%
7
BOND
Chicago Il Brd Of Edu
0.26%
8
BOND
Main Street Energy-A
0.25%
9
BOND
Black Belt Energy-J
0.25%
10
BOND
Univ Of Tx Sys-B-2
0.24%
Geography reflects each issuer's registered business address per SEC EDGAR filings where available, falling back to the exchange or listing where no SEC filing exists — not necessarily where a company's stock is primarily listed (e.g. TSMC is classified as Taiwan even though its ADR trades on the NYSE).
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Funds similar to BBMUX
FIMUFidelity Intermediate Municipal Income Fund
19% overlap
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MMITNYLIM MacKay Muni Intermediate ETF
15% overlap
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BMNIXBaird Core Intermediate Municipal Bond Fund
11% overlap
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FSAJXFidelity SAI Tax-Free Bond Fund
11% overlap
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AFTEXTax Exempt Bond Fund of America
10% overlap
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VSDMVANGUARD SHORT DURATION TAX-EXEMPT BOND ETF
10% overlap
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Data source: official SEC Form N-PORT filings (as of 2026-06-30); expense ratio from SEC prospectus (risk/return) filings. Fund holdings are disclosed quarterly and may reflect a 60-day reporting delay.
Informational and educational only — not investment advice.