SPDR Portfolio Mortgage Backed Bond ETF (SPMB) Short Interest Ratio & Short Volume

Short interest is the volume of SPDR Portfolio Mortgage Backed Bond ETF shares that have been sold short but have not yet been closed out or covered. As of July 15th, investors have sold 450,900 shares of SPMB short. Learn More on SPDR Portfolio Mortgage Backed Bond ETF's current short interest.

As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of SPDR Portfolio Mortgage Backed Bond ETF: Quaker Wealth Management LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission.

SPDR Portfolio Mortgage Backed Bond ETF saw a decline in short interest in the month of July. As of July 15th, there was short interest totaling 450,900 shares, a decline of 8.9% from the previous total of 494,800 shares. Changes in short volume can be used to identify positive and negative investor sentiment. Investors that short sell a stock are betting that its price will decline in the future. An increase in short sale volume suggests bearish (negative) sentiment among investors. A decrease on short sale volume suggests bullish (positive) sentiment.

Here is how the short interest of companies compare to SPDR Portfolio Mortgage Backed Bond ETF: Janus Henderson Mortgage-Backed Securities ETF (0.22%), First Trust Low Duration Opportunities ETF (0.03%), Simplify MBS ETF (0.45%), iShares GNMA Bond ETF (0.03%), CCM Affordable Housing MBS ETF (0.28%), FlexShares Disciplined Duration MBS Index Fund (0.11%), WisdomTree Mortgage Plus Bond Fund (0.08%), Vanguard Mortgage-Backed Securities ETF (0.34%), and iShares MBS ETF (1.89%).

As of the most recent reporting period, the following stocks had the largest short interest positions: Coinbase Global, Inc. ($5.11 billion), Charter Communications, Inc. ($4.76 billion), Reddit Inc. ($2.84 billion), SoFi Technologies, Inc. ($2.79 billion), Seagate Technology Holdings PLC ($2.79 billion), Live Nation Entertainment, Inc. ($2.67 billion), Rocket Lab Corporation ($2.49 billion), AST SpaceMobile, Inc. ($2.12 billion), Moderna, Inc. ($2.09 billion), and Omnicom Group Inc. ($2.04 billion). View all of the most shorted stocks.

Short selling SPMB is an investing strategy that aims to generate trading profit from SPDR Portfolio Mortgage Backed Bond ETF as its price is falling. SPMB shares are trading up $0.14 today. To short a stock, an investor borrows shares, sells them and buys the shares back on the public market later to return it to the lender. Short sellers are betting that a stock will decline in price. If the stock does drop after selling, the short seller buys it back at a lower price and returns it to the lender. The difference between the sell price and the buy price is the trader's profit.

A short squeeze for SPDR Portfolio Mortgage Backed Bond ETF occurs when it has a large amount of short interest and its stock increases in price. This forces short sellers to cover their short interest positions by buying actual shares of SPMB, which in turn drives the price of the stock up even further.

Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including SPMB, twice per month. The most recent reporting period available is July, 15 2025.