GWSBX — AMG GW&K Securitized Bond SMA Shares
Data updated: 2026-08-28
GWSBX — AMG GW&K Securitized Bond SMA Shares. Long Securitized (MBS/ABS/CMBS) Bond · $122.60M AUM. Holdings, fees, performance and SEC filings.
GWSBX Fund Overview
GWSBX — AMG GW&K Securitized Bond SMA Shares is a US mutual fund managed by Amg Funds, 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: Amg Funds
- Category: Long Securitized (MBS/ABS/CMBS) Bond
- Assets under management: $122.60M
- 1-year return: 5.3%
- Ticker: GWSBX
- SEC CIK: 0001089951
- SEC series ID: S000093069
- Share class ID: C000261130
GWSBX Holdings
Top 10 holdings of AMG GW&K Securitized Bond SMA Shares by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Federal Home Loan Mortgage Corp. | 3.91% |
| Federal National Mortgage Association | 3.59% |
| Federal Home Loan Mortgage Corp. | 3.47% |
| Federal National Mortgage Association | 3.15% |
| Federal National Mortgage Association | 3.10% |
| Government National Mortgage Association | 2.84% |
| Federal Home Loan Banks | 2.70% |
| Federal National Mortgage Association | 2.59% |
| Federal National Mortgage Association | 2.54% |
| Federal Home Loan Mortgage Corp. | 2.28% |
GWSBX Portfolio Allocation
Asset-class allocation of AMG GW&K Securitized Bond SMA Shares by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Securitized | 98.3% |
| Cash & Equivalents | 1.2% |
| Fixed Income | 0.6% |
GWSBX Performance
Total returns for GWSBX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 1.2% |
| 1 year | 5.3% |
GWSBX Risk Information
Risk metrics for GWSBX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.2%
GWSBX Costs and Fees
GWSBX costs about $0 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.00%
- Gross expense ratio: 0.21%
- Portfolio turnover: 33%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
GWSBX Cashflows
Over the 12 months to 2026-06, AMG GW&K Securitized Bond SMA Shares had net inflows of $11.88M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | $3.40M |
| 2026-05 | $443.22K |
| 2026-04 | $1.11M |
| 2026-03 | −$442.73K |
| 2026-02 | $2.20M |
| 2026-01 | −$2.67M |
GWSBX Debt Constituents
Largest debt holdings of AMG GW&K Securitized Bond SMA Shares by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Of America - Bureau Of The Public Debt | 0.40% |
| United States Of America - Bureau Of The Public Debt | 0.16% |
GWSBX Prospectus and SEC Filings
Official AMG GW&K Securitized Bond SMA Shares filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
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.