MITBX — Massachusetts Investors Trust
Data updated: 2026-05-26
MITBX — Massachusetts Investors Trust data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. United States Large Cap Blend / Core Equity · $6.31B AUM · 1.44% expense ratio · 11.0% 1-yr return. From SEC regulatory filings.
MITBX Fund Overview
MITBX — Massachusetts Investors Trust is a US mutual fund managed by Massachusetts Investors Trust, categorised as United States Large 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: Massachusetts Investors Trust
- Category: United States Large Cap Blend / Core Equity
- Assets under management: $6.31B
- 1-year return: 11.0%
- Ticker: MITBX
- SEC CIK: 0000063091
- SEC series ID: S000000696
- Share class ID: C000002042
MITBX Holdings
Top 10 holdings of Massachusetts Investors Trust by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| NVIDIA Corp | 6.69% |
| Apple Inc | 6.41% |
| Microsoft Corp | 6.20% |
| Alphabet Inc | 5.59% |
| Amazon.com Inc | 4.59% |
| Meta Platforms Inc | 2.92% |
| JPMorgan Chase & Co | 2.70% |
| ConocoPhillips | 1.95% |
| Lam Research Corp | 1.91% |
| Goldman Sachs Group Inc/The | 1.81% |
MITBX Portfolio Allocation
Asset-class allocation of Massachusetts Investors Trust by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 100.0% |
MITBX Performance
Total returns for MITBX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -4.2% |
| 1 year | 11.0% |
| 3 years (annualised) | 13.7% |
| 5 years (annualised) | 8.4% |
MITBX Risk Information
Risk metrics for MITBX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 9.9%
MITBX Costs and Fees
MITBX costs about $144 per $10,000 invested per year in fund expenses.
- Net expense ratio: 1.44%
- Gross expense ratio: 1.44%
- Portfolio turnover: 26%
- Brokerage commissions: 0.78 bps of average net assets (SEC N-CEN)
MITBX Cashflows
Over the 12 months to 2026-03, Massachusetts Investors Trust had net inflows of $20.38M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | −$57.25M |
| 2026-02 | −$52.54M |
| 2026-01 | −$62.89M |
| 2025-12 | $584.27M |
| 2025-11 | −$90.68M |
| 2025-10 | −$63.55M |
MITBX Debt Constituents
No individual debt constituents are reported in Massachusetts Investors Trust's latest SEC N-PORT filing.
MITBX Prospectus and SEC Filings
Official Massachusetts Investors Trust filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other United States Large 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.