FL
FundLens

FundLens / Funds / BBTBX

Bridge Builder Core Bond Fund (BBTBX)

SEC CIK 1567101 · Series S000040853 · Portfolio as of 2026-06-30

Net assets
$28.36B
Holdings
5408
Snapshots
28
History since
2019-09-30

Top holdings

SecurityValueWeight
F/C US 2YR NOTE (CBT) SEP26$951.1M3.14%
FIDELITY INV MMKT GOVT-INST · FRGXX$800.3M2.64%
F/C US 5YR NOTE (CBT) SEP26$441.1M1.46%
F/C US ULTRA BOND CBT SEP26$235.2M0.78%
US TREAS NTS 3.375% 05/15/33 · T 3.375 05/15/33$235.0M0.78%
WI TREASURY SE 4.250% 02/15/54 · T 4.25 02/15/54$208.7M0.69%
F/C US 10YR NOTE (CBT)SEP26$198.4M0.66%
US TREAS NTS 4% 06/30/32 · T 4 06/30/32$198.0M0.65%
US TREAS NTS 3.5% 03/15/29 · T 3.5 03/15/29$197.0M0.65%
US TREAS NTS 4.625% 04/30/29 · T 4.625 04/30/29$172.9M0.57%

Sector exposure

fixed income
55.3%
other
44.6%

Recent monthly returns

2026-01
+0.26%
2026-02
+1.66%
2026-03
-1.80%
2026-04
+0.14%
2026-05
+0.27%
2026-06
+0.26%

From N-PORT Part B, units verified by net-asset reconciliation.

Get this data via API

curl "https://api.fundlens.io/v1/funds/BBTBX/holdings" \
  -H "x-api-key: your_api_key"

Full holdings, every historical snapshot, point-in-time queries, monthly returns and flows — free tier available, no card required.

Source: SEC EDGAR Form N-PORT. Data is quarterly with a regulatory filing lag; this page shows the most recent public filing. Not investment advice.