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Bridge Builder Core Bond Fund (BBTBX)

SEC CIK 1567101 · Series S000040853 · Portfolio as of 2026-03-31

Net assets
$26.34B
Holdings
5262
Snapshots
27
History since
2019-09-30

Top holdings

SecurityValueWeight
F/C US 2YR NOTE (CBT) JUN26$996.8M3.45%
FIDELITY INV MMKT GOVT-INST · FRGXX$962.9M3.33%
F/C US 5YR NOTE (CBT) JUN26$370.0M1.28%
F/C US 10YR NOTE (CBT)JUN26$324.3M1.12%
F/C US 10YR ULTRA FUT JUN26$253.8M0.88%
US TREAS NTS 4% 06/30/32 · T 4 06/30/32$220.0M0.76%
US TREAS NTS 4.625% 04/30/29 · T 4.625 04/30/29$187.8M0.65%
US TREAS NTS 4.25% 01/15/28 · T 4.25 01/15/28$180.8M0.63%
US TREAS NTS 3.375% 05/15/33 · T 3.375 05/15/33$177.0M0.61%
WI TREASURY SE 4.250% 02/15/54 · T 4.25 02/15/54$174.6M0.60%

Sector exposure

fixed income
52.8%
other
47.1%

Recent monthly returns

2025-10
+0.59%
2025-11
+0.69%
2025-12
-0.18%
2026-01
+0.26%
2026-02
+1.66%
2026-03
-1.80%

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.