SPTM Short Interest
State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF (SPTM) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $13.09B, listed on AMEX, carrying a beta of 1.01 to the broader market. The State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of the S&P Composite 1500 Index (the "Index")A low-cost ETF that seeks to offer precise, comprehensive exposure to the US equity market encompassing stocks across all market capitalizationsThe Index represents approximately 90% of the investable US equity marketOne of the low-cost core State Street SPDR Portfolio ETFs, a suite of portfolio building blocks designed to provide broad, diversified exposure to core asset classes public since 2000-10-10.
Short interest is the total number of shares currently sold short and not yet covered, reported bi-monthly by FINRA. Days to cover (short interest divided by average daily volume) indicates how long it would take short sellers to close positions, with higher values signaling greater squeeze potential.
- Settlement Date
- 2026-04-30
- Short Interest
- 207.1K
- Previous Short Interest
- 256.5K
- Change
- -19.25%
- Days to Cover
- 1.00
- Avg Daily Volume
- 711.4K
- Avg Days to Cover (24 reports)
- 1.02
Showing 24 bi-monthly FINRA short interest reports for State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF.
Learn how short interest is reported and how to read the data →
Frequently asked SPTM short interest questions
- What is the current SPTM short interest?
- As of the Apr 30, 2026 settlement, State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF (SPTM) short interest is 207.1K shares, a -19.25% change from the prior period. FINRA publishes short interest twice monthly on the 15th and last business day of each month under Rule 4560.
- What is the SPTM days-to-cover ratio?
- Days-to-cover is 1.00, calculated as short interest divided by average daily volume. It estimates how many trading days closing all short positions would consume given typical liquidity. Values above 5 days are commonly cited as elevated; values above 10 days are squeeze-relevant.
- How does SPTM short interest affect options pricing?
- High short interest changes options pricing through three mechanics: borrow-rebate effects (synthetic long stock trades below frictionless put-call parity by approximately the borrow rebate when shares are hard-to-borrow), gamma-squeeze setup risk (if dealers are short gamma against retail call buying, dealer hedge flow can amplify upward moves), and elevated event-vol pricing on names with squeeze potential. See the canonical short-interest documentation for the full mechanism.