Australian banks: The biggest short on the ASX
Record hedge fund short positions against Australia's major banks are reigniting concerns about ASX concentration risk and the case for broader diversification.
- Hedge funds have doubled their short positions against Australia's big four banks to a record $11 billion, according to the Australian Financial Review. It is the largest aggregate short position against the major banks since ASIC began collecting the data in 2010.
- The trade has become so popular that the AFR has dubbed it the potential end of the traditional ‘widow maker’ trade, a reference to the long history of investors unsuccessfully betting against Australian banks.
- Whether the hedge funds' thesis proves correct or not, elevated short interest is another indication that investors are questioning the concentration of risk within Australian equities.
- While the rationale for shorting banks today differs from previous cycles, the key issue for investors is not whether hedge funds are right or wrong. It is the extent to which Australian equity portfolios remain dependent on a single sector and a handful of stocks.
- The Big Four banks are among the largest positions in the ASX 200 and have been for many years. We believe this reinforces the portfolio construction case for diversification rather than concentration.
The return of the short banks trade
Australian bank shares have long been regarded as one of the most difficult short trades in the market. Years of growing profits alongside the fastest domestic rate hiking cycle in 40 years helped foster attractive dividend yields. Coupled with oligopolistic market structures and compulsory superannuation inflows, these names have frustrated investors who decried that the banks were overvalued.
However, hedge funds have now accumulated almost $11 billion of disclosed short exposure across Commonwealth Bank, Westpac, NAB and ANZ. This represents the largest aggregate short position against the major banks since ASIC began collecting the data in 2010.
It is also worth noting that the true figure may be even higher. ASIC's short-selling data does not capture positions established through certain derivative structures, with several market participants suggesting some hedge funds are using derivatives to express bearish views on the sector. Whether these concerns ultimately prove justified remains uncertain. What is clear is that investor conviction around Australia's largest companies, including the major banks, is becoming polarised.
Could tax reform change the market structure?
Recent debate around proposed capital gains tax reforms has highlighted the extent to which tax settings can shape capital flows across the market. As I recently observed, "capital behaves like water; it just finds a path of least resistance". If investor preferences shift because of tax reform, it could influence market leadership and the relative attractiveness of different sectors and investment styles.
VanEck's post-Budget survey found that almost 78% of investors reacted negatively to the proposed reforms, with many indicating they were considering restructuring their portfolios.
Against that backdrop, it is perhaps unsurprising that investors are questioning some of the market's most crowded positions, including the major banks. Whether hedge funds are right or wrong on the banks, the emergence of record short positions reflects a broader reassessment of valuation, concentration and portfolio construction across the Australian market.
A portfolio construction solution
The VanEck Australian Equal Weight ETF (MVW) reduces concentration risk by allocating more evenly across Australia's leading companies rather than allocating capital according to market size. This approach provides broader exposure to Australian economic activity and avoids excessive dependence on any individual stock or sector. MVW has outperformed the S&P/ASX 200 by 0.54% p.a. since its inception in March 2014 (as at 31 May 2026).
For investors seeking a complementary satellite allocation, the VanEck Australian Long Short Complex ETF (ALFA) provides an actively managed long-short exposure designed to monetise market inefficiencies and style rotations while maintaining low correlation to traditional Australian equity strategies. ALFA has outperformed the S&P/ASX 200 by 7.16% p.a. since its inception in January 2025 (as at 31 May 2026).
Published: 11 June 2026
Any views expressed are opinions of the author at the time of writing and is not a recommendation to act.
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