CSL
CSL Limited is a global biotechnology company specializing in the development, manufacturing, and marketing of life-saving biotherapies, vaccines, and diagnostic products. Its core business revolves around plasma-derived therapies, which treat a range of serious medical conditions, and recombinant technologies. CSL holds a leading market position in several therapeutic areas, leveraging its extensive research and development capabilities and global manufacturing and distribution network to deliver innovative healthcare solutions.
Short position
CSL (ASX:CSL) has 1.01% of its shares on issue reported as short positions as of 5 Oct 2026, or about 4,858,977 shares. Over the past 30 days that figure has fallen 0.43 percentage points, and over 90 days it has fallen 0.27 percentage points. Its highest recorded short interest was 3.33% in June 2010. CSL is classified in the Pharmaceuticals, Biotechnology & Life Sciences industry. All figures come from official ASIC short position reports, published with a four trading-day (T+4) delay.
Price & short interest
Toggle series, zoom, and compare · ASIC daily, T+4CSL (CSL) short interest history
CSL Short Interest History
- 30-day change
- -0.43pp
- 90-day change
- -0.27pp
- 1-year change
- +0.64pp
- All-time high
- 3.33% (June 2010)
- All-time low
- 0.02% (December 2019)
Is CSL heavily shorted?
Not especially: 1.01% short interest is modest by ASX standards, ranking #241 of 799 ASX securities with reported short positions. ASIC requires positions of 0.01% of issued capital or $100,000 (whichever is less) to be reported.
How has CSL's short interest changed recently?
Over the past 30 days CSL's short interest has been broadly stable, and over 90 days it has been broadly stable. The current level is 1.01% of shares on issue.
What is the highest CSL's short interest has been?
Since 2010, CSL's short interest peaked at 3.33% in June 2010 and bottomed at 0.02% in December 2019.
Where does this data come from?
All figures are sourced from daily ASIC short position reports, published with a four trading-day (T+4) delay. Shorted aggregates the full history since 2010. See our methodology.