MF · holdings as filed 2026-03-31
What's inside BBTBX?
Bridge Builder Core Bond Fund
Holdings
5,259
positions in the fund
Expense ratio
0.12%
net, per year
Fund size
$26B
total net assets
Top 15 holdings
1
—F/C US 2YR NOTE (CBT) JUN26
3.78%
2
FRGXXFIDELITY INV MMKT GOVT-INST
3.66%
3
—F/C US 5YR NOTE (CBT) JUN26
1.40%
4
—F/C US 10YR NOTE (CBT)JUN26
1.23%
5
—F/C US 10YR ULTRA FUT JUN26
0.96%
6
T 4 06/30/32US TREASURY N/B
0.84%
7
T 4.625 04/30/29US TREASURY N/B
0.71%
8
T 4.25 01/15/28US TREASURY N/B
0.69%
9
T 3.375 05/15/33US TREASURY N/B
0.67%
10
T 4.25 02/15/54US TREASURY N/B
0.66%
11
T 4.125 10/31/31US TREASURY N/B
0.63%
12
T 3.5 02/15/33US TREASURY N/B
0.59%
13
T 4.5 11/15/33US TREASURY N/B
0.59%
14
T 4.25 11/15/34US TREASURY N/B
0.55%
15
T 1.125 08/15/40US TREASURY N/B
0.55%
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Unwrap your portfolio →Data source: official SEC Form N-PORT filings (as of 2026-03-31); 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.