What is Securities Lending?
Securities lending is the temporary transfer of securities (stocks, bonds, ETFs) from one party (the lender) to another (the borrower) in exchange for collateral and a fee. The borrower must eventually return equivalent securities.
In the context of the ASX, securities lending is the mechanism that enables short selling. When an investor wants to short a stock, they must first borrow shares through the securities lending market before they can sell them.
How Securities Lending Works
Step 1: Borrower Requests Shares
A short seller (or their broker) requests to borrow a specific number of shares. The request goes through a lending agent or directly to a broker's lending desk.
Step 2: Collateral is Posted
The borrower provides collateral — typically cash or government bonds worth 102-105% of the securities' value. This protects the lender if the borrower fails to return the shares.
Step 3: Shares are Transferred
The shares move from the lender to the borrower. The borrower can now sell them on the open market (short selling) or use them for other purposes like settlement.
Step 4: Ongoing Fees and Adjustments
The borrower pays a daily lending fee. Collateral amounts are adjusted daily based on the stock's price movements (marked to market).
Step 5: Shares are Returned
When the borrower is done, they buy equivalent shares on the market and return them to the lender. Collateral is released back to the borrower.
Who Lends and Who Borrows?
Lenders (Supply)
Superannuation Funds
Australia's super funds are major lenders, earning extra returns on their long-term holdings.
ETF Providers
Index fund and ETF providers lend shares to offset management costs and boost returns.
Insurance Companies
Long-term institutional holders who earn lending fees as an additional income stream.
Borrowers (Demand)
Hedge Funds
The largest borrowers, using securities lending to enable short selling strategies.
Market Makers
Borrow shares temporarily to provide liquidity and facilitate trading.
Arbitrage Traders
Borrow to exploit price differences between related securities or markets.
Borrowing Costs and Fees
Borrowing costs vary significantly depending on supply and demand. These costs directly affect the profitability of short selling.
General Collateral (GC)
Stocks that are easy to borrow with plentiful supply. Lending fees are typically 0.25-0.50% per annum. Most large-cap ASX stocks fall into this category.
Special / Hard-to-Borrow
Stocks with limited lending supply or high demand. Fees can range from 1% to 50%+ per annum. Small-caps and heavily shorted stocks often become "specials."
Why Costs Matter
High borrowing costs erode short-selling profits and can force short sellers to close positions even if they believe the stock will eventually fall. A stock that costs 20% per annum to borrow needs to fall by more than 20% just for the short seller to break even.
The Connection to Short Selling
Securities lending data provides valuable insights that complement ASIC short position reports:
Supply Tells You About Squeeze Risk
When available lending inventory drops, it means most of the borrowable shares are already lent out. This "tight" lending market increases squeeze risk because short sellers may struggle to maintain or open new positions.
Demand Signals Sentiment
Rising borrowing demand for a stock indicates growing bearish sentiment. When multiple hedge funds are competing to borrow the same stock, lending fees spike — a strong signal of conviction.
Fee Spikes as an Early Warning
Lending fee increases often precede changes in short interest reported by ASIC. Because ASIC data has a T+4 lag, lending data can provide a more timely signal.
Using Lending Data for Analysis
ASX Short Data tracks securities lending activity across the ASX. You can use this data to:
- - View lending data on our Securities Lending page
- - See individual stock lending activity on each stock page (borrowers and lenders breakdown)
- - Identify stocks with tightening lending pools, which may signal upcoming short squeezes
- - Compare lending activity against short interest trends to confirm whether shorts are building or covering