CMCSA Short Volume
Comcast Corporation (CMCSA) operates in the Communication Services sector, specifically the Telecommunications Services industry, with a market capitalization near $82.77B, listed on NASDAQ, employing roughly 182,000 people, carrying a beta of 0.66 to the broader market. Comcast Corporation functions as a global media and technology conglomerate. Led by Brian L. Roberts, public since 1980-03-17.
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
- 2026-06-30
- Short Volume
- 10.9M
- Total Volume
- 21.5M
- Short %
- 50.72%
- 30-Day Avg Short %
- 35.42%
Showing 30 days of FINRA short volume data for Comcast Corporation.
Learn how short volume is reported and how to read the data →
CMCSA most-active contracts
| Type | Strike | Expiration | Volume | OI | IV | Bid | Ask |
|---|---|---|---|---|---|---|---|
| CALL | $30.00 | Jan 15, 2027 | 666 | 79.8K | 37.4% | $0.75 | $1.00 |
| CALL | $25.00 | Jul 17, 2026 | 5.9K | 73.4K | 37.3% | $0.43 | $0.45 |
| PUT | $20.00 | Aug 21, 2026 | 246 | 56.6K | 42.7% | $0.17 | $0.35 |
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 CMCSA short volume questions
- What is the daily CMCSA short volume?
- As of Jun 30, 2026, Comcast Corporation (CMCSA) short volume is 10.9M shares against 21.5M total reported volume, or 50.72% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
- How is CMCSA 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 CMCSA 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.