The 10 most shorted ASX stocks plus the biggest risers and fallers – Week 25

Welcome back to the Short Seller Series – A recap of the most heavily shorted stocks on the ASX and those experiencing significant changes to short interest over the past week.

Short selling data is four days behind today's date because reporting is not mandatory until three business days after the trade. The tables below will compare:

• Week-on-week changes between 2 and 6 June 2025

• Month-on-month changes between 1 April and 6 June 2025

• Most covered and rising short tables record week-on-week changes of 0.4% or more

Most Shorted

Key takeaways

• Boss Energy's short interest has fallen to a five-month low, down 25% from its April peak. After a powerful March-to-May rally that saw large caps like Boss, Paladin Energy and Deep Yellow surge 50-90%, uranium stocks have traded sideways for the past month. Recent bullish catalysts include Trump's executive orders bolstering US nuclear energy under the Defense Production Act and Meta's 20-year, 1.1GW nuclear power purchase agreement with Constellation Energy. A key under-the-radar development occurred on 5 June when China General Nuclear Power Group signed a three-year uranium supply contract delivering over 1,200 tonnes annually from 2026-2028. The contract's base price of US$94.22/lb represents a 52% increase from previous agreements and sits well above current spot prices of US$70/lb.

Rising Shorts

Key takeaways

• A relatively quiet week for rising short activity

Most Covered

Key takeaways

• IDP Education's 48% plunge on 3 June erased $1 billion in market cap after the company slashed FY25 EBIT guidance by 25-30% below expectations. Regulatory headwinds including Canada's loss of IELTS monopoly, UK visa restrictions, and Australia's student caps drove the sharp decline in placements. While short sellers profited approximately $100 million, many took profits following the news, bringing short interest to its lowest level since March 2024.

• Short interest continues to ease across a broad number of themes including beaten-up stocks (Nufarm, Healius), recapitalisation plays (The Star, Coronado Global), and critical metals (Chalice, Iluka Resources).