Short Selling & Securities Lending

The mechanics of selling what you do not own — locating and borrowing stock, collateral and the rebate rate, daily financing, margin, recalls and buy-ins, squeezes, settlement fails, and the securities lending business sitting on the other side of every short.

4 units · 16 lessons · 65 min read · plus hands-on practice, at your pace

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What is the difference between owning a share and owing one?

The Short Position · 4 min read · practitioner

Start the first lesson

Unit 1 The Short Position

  1. What is the difference between owning a share and owing one? 4 min
  2. Whose shares are you selling when you short a stock? 4 min
  3. Why is a short seller's loss unbounded when a buyer's is not? 4 min
  4. What does a short position look like from open to close? 4 min
Practice Check · Unit 1 A short check · cannot be failed Start

Unit 2 The Borrow and Its Cost

  1. Who actually lends the shares, and what do they get for it? 4 min
  2. How does a share travel from a pension fund to a short seller? 4 min
  3. What is the rebate rate, and why is it the real price of a borrow? 4 min
  4. Why does one stock cost 0.3% to borrow and another 80%? 4 min
Practice Check · Unit 2 A short check · cannot be failed Start

Unit 3 Margin, Recalls and Squeezes

  1. Why is time the short seller's enemy? 4 min
  2. How does margin work on a short, and why does the requirement grow when you are wrong? 4 min
  3. What happens when the lender wants the shares back? 4 min
  4. How does a short squeeze actually feed on itself? 4 min
Practice Check · Unit 3 A short check · cannot be failed Start

Unit 4 The Lender's Side and the Bigger Picture

  1. What is naked shorting, and what is a fail-to-deliver? 4 min
  2. Who actually shorts, and why is most of it not a bet against a company? 4 min
  3. How does lending shares become a yield business, and how did it lose money in 2008? 4 min
  4. Short selling and securities lending — course checkpoint 5 min
Practice Check · Unit 4 A short check · cannot be failed Start

Last Course exam

One exam, the whole course Unlocks when you have read all 16 lessons

Passing it earns the course certificate.