BSX Short Volume
Boston Scientific Corporation (BSX) operates in the Healthcare sector, specifically the Medical - Devices industry, with a market capitalization near $62.37B, listed on NYSE, employing roughly 59,000 people, carrying a beta of 0.57 to the broader market. Boston Scientific Corporation (BSX) operates as a global leader in medical technology, specializing in the design, manufacturing, and commercialization of innovative medical devices tailored for a diverse array of interventional medical specialties across the globe. Led by Michael F. Mahoney, public since 1992-05-19.
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
- 2.3M
- Total Volume
- 5.2M
- Short %
- 44.48%
- 30-Day Avg Short %
- 42.11%
Showing 30 days of FINRA short volume data for Boston Scientific Corporation.
Learn how short volume is reported and how to read the data →
BSX most-active contracts
| Type | Strike | Expiration | Volume | OI | IV | Bid | Ask |
|---|---|---|---|---|---|---|---|
| CALL | $67.50 | Dec 18, 2026 | 2 | 114.3K | 48.4% | $0.05 | $0.10 |
| CALL | $60.00 | Sep 17, 2027 | 4.0K | 390 | 40.9% | $2.25 | $2.75 |
| CALL | $60.00 | Dec 18, 2026 | 33 | 56.7K | 45.5% | $0.15 | $0.20 |
Top 3 contracts from the institutional-grade nightly options scan; ranked by volume within the broader S&P 500/400/600 + ETF universe.
Frequently asked BSX short volume questions
- What is the daily BSX short volume?
- As of Oct 14, 2026, Boston Scientific Corporation (BSX) short volume is 2.3M shares against 5.2M total reported volume, or 44.48% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
- How is BSX 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 BSX 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.