SSO Short Volume
ProShares - Ultra S&P500 (SSO) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $7.37B, listed on AMEX, carrying a beta of 2.04 to the broader market. ProShares Ultra S&P500 seeks daily investment results, before fees and expenses, that correspond to two times (2x) the daily performance of the S&P 500. public since 2006-06-21.
Short volume measures the number of shares sold short on a given day as reported by FINRA. Tracking short volume relative to total volume helps identify unusual bearish sentiment or short-squeeze potential.
- Latest Date
- 2026-05-15
- Short Volume
- 503.1K
- Total Volume
- 1.3M
- Short %
- 39.04%
- 30-Day Avg Short %
- 56.56%
Showing 30 days of FINRA short volume data for ProShares - Ultra S&P500.
Learn how short volume is reported and how to read the data →
Frequently asked SSO short volume questions
- What is the daily SSO short volume?
- As of May 15, 2026, ProShares - Ultra S&P500 (SSO) short volume is 503.1K shares against 1.3M total reported volume, or 39.04% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
- How is SSO short volume reported?
- FINRA publishes the Daily Short Sale Volume File for trades reported to FINRA TRFs and the FINRA/Nasdaq ADF on a T+1 basis. The headline figure is the count of shares that printed at the short-sale or short-exempt tick across all reporting venues for the symbol; each exchange separately publishes its own daily short-sale data file.
- What does SSO short volume tell options traders?
- Daily short-sale flow is one input that helps disambiguate dealer-hedging activity from directional bear flow when the chain shows fresh customer call inventory. It is not a clean MM-only proxy: the headline number mixes directional shorting, options-MM delta-hedging, ETF-creation arbitrage, and convertible-arb hedging. Cross-check against gamma-exposure and OI changes for a cleaner read.