PTCT Short Volume
PTC Therapeutics, Inc. (PTCT) operates in the Healthcare sector, specifically the Biotechnology industry, with a market capitalization near $6.09B, listed on NASDAQ, employing roughly 939 people, carrying a beta of 0.53 to the broader market. PTC Therapeutics, Inc. Led by Matthew Klein, public since 2013-06-20.
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
- 186.7K
- Total Volume
- 243.9K
- Short %
- 76.56%
- 30-Day Avg Short %
- 66.41%
Showing 30 days of FINRA short volume data for PTC Therapeutics, Inc..
Learn how short volume is reported and how to read the data →
Frequently asked PTCT short volume questions
- What is the daily PTCT short volume?
- As of May 15, 2026, PTC Therapeutics, Inc. (PTCT) short volume is 186.7K shares against 243.9K total reported volume, or 76.56% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
- How is PTCT 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 PTCT 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.