MSOS Short Volume
AdvisorShares Pure US Cannabis ETF (MSOS) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $587.0M, listed on AMEX, carrying a beta of 0.86 to the broader market. MSOS is the groundbreaking actively managed ETF, listed in the U. public since 2020-09-02.
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
- 2026-09-30
- Short Volume
- 2.5M
- Total Volume
- 7.9M
- Short %
- 31.38%
- 30-Day Avg Short %
- 30.95%
Showing 30 days of FINRA short volume data for AdvisorShares Pure US Cannabis ETF.
Learn how short volume is reported and how to read the data →
MSOS most-active contracts
| Type | Strike | Expiration | Volume | OI | IV | Bid | Ask |
|---|---|---|---|---|---|---|---|
| CALL | $5.00 | Oct 2, 2026 | 378 | 4.0K | 909.0% | $0.02 | $0.03 |
| PUT | $5.00 | Oct 2, 2026 | 285 | 2.7K | 909.0% | $0.40 | $0.62 |
| CALL | $4.50 | Oct 2, 2026 | 3.2K | 157 | 590.7% | $0.14 | $0.16 |
| PUT | $4.50 | Oct 2, 2026 | 523 | 518 | 590.7% | $0.04 | $0.06 |
| CALL | $4.50 | Oct 2, 2026 | 3.2K | 157 | 590.7% | $0.14 | $0.16 |
Top 5 contracts from the institutional-grade nightly options scan; ranked by volume within the broader S&P 500/400/600 + ETF universe.
Frequently asked MSOS short volume questions
- What is the daily MSOS short volume?
- As of Sep 30, 2026, AdvisorShares Pure US Cannabis ETF (MSOS) short volume is 2.5M shares against 7.9M total reported volume, or 31.38% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
- How is MSOS 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 MSOS 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.