IRDM Short Volume
Iridium Communications Inc. (IRDM) operates in the Communication Services sector, specifically the Telecommunications Services industry, with a market capitalization near $4.56B, listed on NASDAQ, employing roughly 873 people, carrying a beta of 0.80 to the broader market. Iridium Communications Inc. Led by Matthew J. Desch, public since 2008-03-20.
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
- 2026-05-15
- Short Volume
- 447.7K
- Total Volume
- 643.8K
- Short %
- 69.54%
- 30-Day Avg Short %
- 56.45%
Showing 30 days of FINRA short volume data for Iridium Communications Inc..
Learn how short volume is reported and how to read the data →
IRDM most-active contracts
| Type | Strike | Expiration | Volume | OI | IV | Bid | Ask |
|---|---|---|---|---|---|---|---|
| CALL | $45.00 | Jun 18, 2026 | 368 | 8.3K | 70.9% | $2.30 | $2.60 |
Top 1 contracts from the ORATS-sourced nightly scan; ranked by volume within the broader S&P 500/400/600 + ETF universe.
Frequently asked IRDM short volume questions
- What is the daily IRDM short volume?
- As of May 15, 2026, Iridium Communications Inc. (IRDM) short volume is 447.7K shares against 643.8K total reported volume, or 69.54% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
- How is IRDM 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 IRDM 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.