BBTSX — Bridge Builder Tax Managed Small/mid Cap Fund
Data updated: 2026-09-11
BBTSX — Bridge Builder Tax Managed Small/mid Cap Fund. United States Mid Cap Blend / Core Equity · $3.56B AUM. Holdings, fees, performance and SEC filings.
BBTSX Fund Overview
BBTSX — Bridge Builder Tax Managed Small/mid Cap Fund is a US mutual fund managed by Bridge Builder Trust, categorised as United States Mid Cap Blend / Core Equity. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Bridge Builder Trust
- Category: United States Mid Cap Blend / Core Equity
- Assets under management: $3.56B
- 1-year return: 24.7%
- Ticker: BBTSX
- SEC CIK: 0001567101
- SEC series ID: S000076295
- Share class ID: C000235967
BBTSX Holdings
Top 10 holdings of Bridge Builder Tax Managed Small/mid Cap Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| JPMorgan US Govt Mmkt-Im | 2.10% |
| Comfort Systems USA, Inc. | 1.49% |
| Ftai Aviation Ltd. | 0.95% |
| Ascendis Pharma A/s | 0.84% |
| Mks, Inc. | 0.82% |
| Rpm International, Inc. | 0.81% |
| Knight-Swift Transportation | 0.79% |
| Keysight Technologies In | 0.75% |
| Regal Rexnord Corp. | 0.71% |
| Technipfmc PLC | 0.70% |
BBTSX Portfolio Allocation
Asset-class allocation of Bridge Builder Tax Managed Small/mid Cap Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 95.0% |
| Real Estate | 2.7% |
| Cash & Equivalents | 2.1% |
BBTSX Performance
Total returns for BBTSX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 17.6% |
| 1 year | 24.7% |
| 3 years (annualised) | 13.5% |
BBTSX Risk Information
Risk metrics for BBTSX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 12.6%
BBTSX Costs and Fees
BBTSX costs about $39 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.39%
- Gross expense ratio: 0.67%
- Portfolio turnover: 52%
- Brokerage commissions: 1.84 bps of average net assets (SEC N-CEN)
BBTSX Cashflows
Over the 12 months to 2026-06, Bridge Builder Tax Managed Small/mid Cap Fund had net inflows of $582.71M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | $26.72M |
| 2026-05 | $19.44M |
| 2026-04 | −$6.80M |
| 2026-03 | $39.72M |
| 2026-02 | $38.10M |
| 2026-01 | $56.09M |
BBTSX Debt Constituents
No individual debt constituents are reported in Bridge Builder Tax Managed Small/mid Cap Fund's latest SEC N-PORT filing.
BBTSX Prospectus and SEC Filings
Official Bridge Builder Tax Managed Small/mid Cap Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2025-10-27
- Prospectus (485BPOS) — filed 2024-10-25
- Prospectus (485BPOS) — filed 2023-10-27
- Portfolio holdings (N-PORT) — filed 2026-08-26
- Portfolio holdings (N-PORT) — filed 2026-05-22
- Portfolio holdings (N-PORT) — filed 2026-02-23
- Annual census (N-CEN) — filed 2026-09-11
- Annual census (N-CEN) — filed 2025-09-11
Related Funds
Other United States Mid Cap Blend / Core Equity funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.