SPDR Portfolio Short Term Corporate Bond ETF (SPSB) is an exchange-traded fund managed by State Street Global Advisors that seeks to track the performance of the Bloomberg U.S. 1-3 Year Corporate Bond Index, providing investors with exposure to investment-grade U.S. corporate bonds with maturities between one and three years. The fund primarily invests in U.S. dollar-denominated, fixed-rate, nonconvertible corporate bonds rated Baa3/BBB- or higher by Moody's, S&P, or Fitch, with at least $300 million in outstanding face value; these securities span industrial, financial, and utility sectors, excluding structured notes, private placements, floating-rate issues, and Eurobonds. Launched on December 16, 2009, SPSB operates as part of the SPDR Portfolio suite of low-cost ETFs offered by State Street Global Advisors, a Boston-based division of State Street Corporation founded in 1978 and headquartered at One Congress Street.
The ETF's portfolio consists of approximately 1,577 holdings with an option-adjusted duration of 1.81 years and an option-adjusted spread of 47.6 basis points, weighted toward corporate industrial (46.66%) and financial (46.50%) sectors; it features a low expense ratio of 0.04%, assets under management exceeding $8.3 billion, and a 30-day SEC yield around 4.7%. SPSB targets institutional and retail investors seeking short-term, low-volatility fixed-income exposure with minimal interest rate risk, primarily in the U.S. market through NYSE Arca trading. The fund engages in monthly distributions, with recent payouts including $0.1133 per share declared in late 2025.
Recent developments include sustained inflows, such as $196.39 million over the past year and new positions opened by firms like Prospera Financial Services Inc. ($4.7 million) and stake increases by All Terrain Financial Advisors LLC (4.8% in Q2 2025), alongside ongoing portfolio reconstitution on the last business day of each month to reflect market cap weighting. Analyst commentary in 2025 has highlighted SPSB's attractiveness due to its competitive fees and low volatility, though some noted tighter corporate spreads potentially impacting new entries. No major acquisitions, partnerships, or structural changes were reported in the last 1-2 years, with the fund maintaining stable operations under SSGA Funds Management, Inc..