MKTRX — MainStay Income Builder Fund
Data updated: 2026-06-25
MKTRX — MainStay Income Builder Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Balanced Allocation · $1.13B AUM · 2.03% expense ratio · 12.6% 1-yr return. From SEC regulatory filings.
MKTRX Fund Overview
MKTRX — MainStay Income Builder Fund is a US mutual fund managed by New York Life Investments Funds, categorised as Balanced Allocation. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: New York Life Investments Funds
- Category: Balanced Allocation
- Assets under management: $1.13B
- 1-year return: 12.6%
- Ticker: MKTRX
- SEC CIK: 0000787441
- SEC series ID: S000006900
- Share class ID: C000018707
MKTRX Holdings
Top 10 holdings of MainStay Income Builder Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| NYLI U.S. Government Liquidity Fund | 1.82% |
| Broadcom, Inc. | 1.59% |
| Cisco Systems, Inc. | 1.56% |
| Taiwan Semiconductor Manufacturing Co. Ltd. | 1.54% |
| Dell Technologies, Inc. | 1.51% |
| Hewlett Packard Enterprise Co. | 1.44% |
| Analog Devices, Inc. | 1.38% |
| Texas Instruments, Inc. | 1.29% |
| Microsoft Corp. | 1.20% |
| Microchip Technology, Inc. | 1.17% |
MKTRX Portfolio Allocation
Asset-class allocation of MainStay Income Builder Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 64.0% |
| Securitized | 17.3% |
| Fixed Income | 13.9% |
| Cash & Equivalents | 2.7% |
| Loans | 1.0% |
| Derivatives | 0.9% |
| Other | 0.6% |
MKTRX Performance
Total returns for MKTRX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| 1 year | 12.6% |
| 3 years (annualised) | 2.7% |
| 5 years (annualised) | 3.9% |
MKTRX Risk Information
Risk metrics for MKTRX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 9.8%
MKTRX Costs and Fees
MKTRX costs about $203 per $10,000 invested per year in fund expenses.
- Net expense ratio: 2.03%
- Gross expense ratio: 2.04%
- Portfolio turnover: 50%
- Brokerage commissions: 3.58 bps of average net assets (SEC N-CEN)
MKTRX Cashflows
Over the 12 months to 2026-04, MainStay Income Builder Fund had net outflows of $68.93M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-04 | −$5.95M |
| 2026-03 | −$6.67M |
| 2026-02 | −$2.86M |
| 2026-01 | −$6.71M |
| 2025-12 | −$2.95M |
| 2025-11 | −$6.21M |
MKTRX Debt Constituents
Largest debt holdings of MainStay Income Builder Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States of America | 0.84% |
| United States of America | 0.49% |
| United States of America | 0.20% |
| Barclays plc | 0.17% |
| Nissan Motor Acceptance Co. LLC | 0.17% |
| Flex Intermediate Holdco LLC | 0.16% |
| Morgan Stanley | 0.16% |
| Huntsman International LLC | 0.16% |
| Delta Air Lines, Inc. | 0.16% |
| Arizona Public Service Co. | 0.15% |
MKTRX Prospectus and SEC Filings
Official MainStay Income Builder Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Balanced Allocation 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.