LSSAX — Loomis Sayles Securitized Asset Fund
Data updated: 2026-08-28
LSSAX — Loomis Sayles Securitized Asset Fund. Long Securitized (MBS/ABS/CMBS) Bond · $1.58B AUM. Holdings, fees, performance and SEC filings.
LSSAX Fund Overview
LSSAX — Loomis Sayles Securitized Asset Fund is a US mutual fund managed by Loomis Sayles Funds I, categorised as Long Securitized (MBS/ABS/CMBS) Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Loomis Sayles Funds I
- Category: Long Securitized (MBS/ABS/CMBS) Bond
- Assets under management: $1.58B
- 1-year return: 5.5%
- Ticker: LSSAX
- SEC CIK: 0000917469
- SEC series ID: S000006639
- Share class ID: C000018125
LSSAX Holdings
Top 10 holdings of Loomis Sayles Securitized Asset Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Umbs, Tba | 8.89% |
| Umbs, Tba | 6.67% |
| Umbs, Tba | 5.91% |
| Fannie Mae | 4.74% |
| Government National Mortgage Association | 4.48% |
| Fannie Mae | 3.80% |
| Fannie Mae | 3.68% |
| Fixed Income Clearing Corp. | 3.43% |
| Fannie Mae | 2.85% |
| Umbs, Tba | 2.58% |
LSSAX Portfolio Allocation
Asset-class allocation of Loomis Sayles Securitized Asset Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Securitized | 128.8% |
| Cash & Equivalents | 3.6% |
| Fixed Income | 0.2% |
| Real Estate | 0.1% |
LSSAX Performance
Total returns for LSSAX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 1.6% |
| 1 year | 5.5% |
| 3 years (annualised) | 6.1% |
| 5 years (annualised) | 1.5% |
LSSAX Risk Information
Risk metrics for LSSAX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.0%
LSSAX Costs and Fees
LSSAX costs about $0 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.00%
- Gross expense ratio: 0.00%
- Portfolio turnover: 104%
- Brokerage commissions: 0.35 bps of average net assets (SEC N-CEN)
LSSAX Cashflows
Over the 12 months to 2026-06, Loomis Sayles Securitized Asset Fund had net outflows of $88.55M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | −$8.80M |
| 2026-05 | −$10.08M |
| 2026-04 | −$11.34M |
| 2026-03 | −$8.51M |
| 2026-02 | $5.54M |
| 2026-01 | $26.68M |
LSSAX Debt Constituents
Largest debt holdings of Loomis Sayles Securitized Asset Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| American Tower Trust I | 0.24% |
LSSAX Prospectus and SEC Filings
Official Loomis Sayles Securitized Asset Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-01-27
- Prospectus (485BPOS) — filed 2025-01-27
- Prospectus supplement (497) — filed 2024-02-01
- Portfolio holdings (N-PORT) — filed 2026-08-28
- Portfolio holdings (N-PORT) — filed 2026-05-29
- Portfolio holdings (N-PORT) — filed 2026-02-26
- Annual census (N-CEN) — filed 2025-12-12
- Annual census (N-CEN) — filed 2024-12-12
Related Funds
Other Long Securitized (MBS/ABS/CMBS) Bond 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.