SPDR Portfolio Mortgage Backed Bond ETF (NYSEARCA:SPMB) Short Interest Update

Posted by Linda Flegge on Aug 31st, 2026

SPDR Portfolio Mortgage Backed Bond ETF (NYSEARCA:SPMB – Get Free Report) saw a large drop in short interest in August. As of August 14th, there was short interest totaling 384,061 shares, a drop of 57.1% from the July 30th total of 895,869 shares. Based on an average trading volume of 1,126,662 shares, the days-to-cover ratio is currently 0.3 days. Approximately 0.1% of the shares of the stock are short sold.

Institutional Investors Weigh In On SPDR Portfolio Mortgage Backed Bond ETF

Institutional investors and hedge funds have recently made changes to their positions in the stock. Financial Engines Advisors L.L.C. raised its holdings in SPDR Portfolio Mortgage Backed Bond ETF by 1.5% during the 4th quarter. Financial Engines Advisors L.L.C. now owns 188,762,736 shares of the company’s stock worth $4,231,117,000 after purchasing an additional 2,759,654 shares during the last quarter. State Street Corp boosted its stake in shares of SPDR Portfolio Mortgage Backed Bond ETF by 69.8% in the 4th quarter. State Street Corp now owns 5,020,182 shares of the company’s stock valued at $112,527,000 after purchasing an additional 2,064,451 shares during the last quarter. LPL Financial LLC boosted its stake in shares of SPDR Portfolio Mortgage Backed Bond ETF by 10.8% in the 4th quarter. LPL Financial LLC now owns 20,238,970 shares of the company’s stock valued at $453,656,000 after purchasing an additional 1,974,582 shares during the last quarter. 93 Financial Group LLC acquired a new stake in shares of SPDR Portfolio Mortgage Backed Bond ETF during the fourth quarter worth $16,956,000. Finally, Symphony Financial Ltd. Co. bought a new position in SPDR Portfolio Mortgage Backed Bond ETF during the second quarter worth $13,199,000.

SPDR Portfolio Mortgage Backed Bond ETF Stock Performance

NYSEARCA:SPMB opened at $21.99 on Monday. SPDR Portfolio Mortgage Backed Bond ETF has a one year low of $21.88 and a one year high of $22.87. The firm’s 50 day simple moving average is $22.09 and its 200 day simple moving average is $22.28.

About SPDR Portfolio Mortgage Backed Bond ETF

(Get Free Report)

The SPDR Portfolio Mortgage Backed Bond ETF (SPMB) is an exchange-traded fund that is based on the Bloomberg U.S. MBS index. The fund tracks an index of US agency mortgage pass-through debt. SPMB was launched on Jan 15, 2009 and is managed by State Street.