Cboe Adds Instant Stock Loan Tracker to Boost Short Selling Speed
Published Date: 5/8/2026
Notice
Summary
Cboe Exchange is rolling out a cool new feature for Silexx users—a real-time stock loan inventory tool that helps brokers and their customers track available shares to borrow instantly. This upgrade makes short selling smoother and faster, with no extra fees announced. The change is effective immediately, so brokers and traders can start using it right away!
Analyzed Economic Effects
3 provisions identified: 2 benefits, 1 costs, 0 mixed.
Real-time Stock Loan Inventory Added
Cboe is adding a Short Locate Service in Silexx that gives Silexx users a real-time view of a broker's stock loan inventory, including the quantity available and the fee to borrow. The tool can automatically populate the required locate ID into a short-sale order and lets users request and receive locates through a live FIX connection.
Brokers Must Pay Monthly FIX Fee
Silexx brokers that want to offer the Short Locate Service must purchase a FIX session and will pay a monthly fee for that FIX connection, and the Exchange will submit a separate fee filing describing the charge. The fee is paid by the Silexx broker, not automatically by Silexx users.
No Extra Connectivity Charge For Users
The Exchange states that Silexx users will not need to pay for any additional connectivity to use the Short Locate Service, even though Silexx brokers will purchase the FIX session. This means users should be able to access live locate inventory without new connectivity charges.
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