OCTB Short Volume
ETF Series Solutions - Aptus October Buffer ETF (OCTB) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $46.5M, listed on CBOE, carrying a beta of 0.49 to the broader market. OCTB seeks to provide defined returns linked to the performance of the SPDR S&P 500 ETF Trust (SPY) over a one-year outcome period from October 1 to September 30. public since 2025-10-14.
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
- 2026-10-14
- Short Volume
- 35.9K
- Total Volume
- 37.6K
- Short %
- 95.60%
- 30-Day Avg Short %
- 59.50%
Showing 30 days of FINRA short volume data for ETF Series Solutions - Aptus October Buffer ETF.
Learn how short volume is reported and how to read the data →
Frequently asked OCTB short volume questions
- What is the daily OCTB short volume?
- As of Oct 14, 2026, ETF Series Solutions - Aptus October Buffer ETF (OCTB) short volume is 35.9K shares against 37.6K total reported volume, or 95.60% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
- How is OCTB 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 OCTB 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.