The Short Report
FNArena’s weekly ASIC-based update on ASX short positions for the week ending May 21, 2026 shows the highest short percentages above 10% in LOT (18.34%), DMP (15.39%), TLX (14.66%), BOE (14.61%), GYG (13.55%), and TWE (13.52%), among others. Nanosonics (9.87%) and Healius (9.84%) were near 10%. The report notes moves into higher/lower brackets and that short-percentage figures alone may not indicate bearish intent.
How this was made
The 30-second read
Why it matters
Because the article contains no company-specific news, it functions mainly as a positioning/volatility indicator; directional trading should be conditioned on upcoming catalysts and confirmation from price action.
Market read
Elevated short percentages (especially 'In' names) can increase sensitivity to surprises, but the report warns against assuming shorts equal bearish fundamentals.
What to watch
The report explicitly cautions that ASIC short data can be misclassified or offset by other positions; bracket moves alone may not predict returns.
Background
This is FNArena’s weekly ASIC-derived update on ASX-listed stocks with notable short-position percentages, grouped by ranges and flagged as 'In'/'Out' by bracket changes.
Ticker impact
Nanosonics (NAN) short positions are listed at 9.87% (in: NAN), indicating bearish positioning near the 10% threshold.
Tactical downside bias if sentiment worsens; otherwise mean reversion is possible.
Short-percentage data alone is not a direct directional signal per the report’s own caveats.
NextDC (NXT) is listed as 'Out' from the 9.0–9.9% bracket, implying short positions fell below that range.
Mild positive bias versus peers if the reduction reflects genuine sentiment improvement.
The report notes multiple benign reasons for shorts; directionality is uncertain.
Rio Tinto (RIO) is listed at 8.14% short positions in the 8.0–8.9% bracket, showing sizable bearish exposure.
Expect higher volatility around commodity or company headlines; trend uncertain without news.
No RIO-specific news is included—only positioning levels.
Market effects
Multiple healthcare/biotech and resources names show elevated short percentages, implying crowded positioning across risk-on/risk-off themes.
ASX-wide short positioning changes may contribute to broader volatility sensitivity in Australian equities.
Limited direct global linkage; however, commodity-linked names (e.g., RIO) can transmit sentiment to global peers via risk appetite.
Counterpoint
Short increases may reflect hedging, market-making, or option-delta hedges rather than a purely negative fundamental view, reducing directional conviction.
Key entities
- regulatorASIC
Australian Securities & Investments Commission provides the short-position data used in the report.
- exchangeASX
Australian Securities Exchange lists the securities referenced; it also maintains its own short-position register.
- publisherFNArena
Publishes the weekly short-position summary and includes methodological caveats about interpretation.
