BSX Short Volume
Boston Scientific Corporation (BSX) operates in the Healthcare sector, specifically the Medical - Devices industry, with a market capitalization near $63.97B, listed on NYSE, employing roughly 59,000 people, carrying a beta of 0.58 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
- 2026-07-16
- Short Volume
- 2.8M
- Total Volume
- 8.5M
- Short %
- 32.68%
- 30-Day Avg Short %
- 26.11%
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 | 37 | 111.7K | 48.9% | $0.85 | $0.90 |
| CALL | $85.00 | Dec 18, 2026 | 24 | 107.1K | 51.7% | $0.15 | $0.35 |
| CALL | $45.00 | Jul 24, 2026 | 4.3K | 270 | 43.0% | $0.90 | $1.00 |
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 Jul 16, 2026, Boston Scientific Corporation (BSX) short volume is 2.8M shares against 8.5M total reported volume, or 32.68% 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.