Jeb.
When selling stock short the brokerage needs to borrow those shares. The Lender demands collateral for the loan. For US stocks it is typically 102% of the value of the security. This 102% in cash is then reinvested by the Lender's agent and the proceeds from this reinvestment are then split between 1. The Lender 2. The custodial bank acting on behalf of the lender 3. The brokerage firm 4. The client (borrower).
The majority of the income from this reinvestment is returned to the brokerage on behalf of the client. The brokerage then "rebates" a portion of this income to the it's client. Most retail brokerages pay ZERO in rebates.
The above example is mainly for General Collateral names. Then there is the issue of Hard to Borrow (HTB) names or Specials. These names are not easy to find for a variety of reason whether it is a pending corporate event (such as a dividend) or vote or even simple supply and demand. Big names are not immune from this. For example GM and Sears are very expensive to borrow. In these Special stocks the above 102% is again collected from the borrower and reinvested. Nothing is rebated back to the customer in these stocks. In addition there is a commission demanded by the brokerage for finding the stock. This commission is expressed as a negative rebate and you will see it expressed in the Interest component of your brokerage statement. You do not know what the interest rate will be until the stock settles on T+3 after you close the short postion. This negative rebate in very hard to borrow names sometimes exceed 40-50% interest per year. Very expensive.
In today's interest rate environment with rate's so low there is the possibility that even with GC names you will get zero and even have to pay to borrow. This is because the brokerage firms that do pay often pay some benchmark rate -Xbasis points. If the X exceeds the benchmark then the rebate rate goes negative.
With that said I would like to remind you that Single Stock futures and the EFP trade allow users to flip out of stocks paying low rebates and into a short SSF position where they will receive a higher yield on the position.
We post on our website a list of EFP quotes sorted by Highest bids (additional sorts are available) with an indicative rate of interest implied by the quote. These quotes are pulled from our professional Block and EFP trading system and repainted for all to see. During trading hours the screen updates frequently while after trading hours it is just the last pulled data.
http://www.onechicago.com/?page_id=812
In addition the OneChicago calculator allows you to compare shorting the stock or shorting the SSF. Input your variables that you are subject to and the resulting info and graph will help you understand the costs and incomes from the various strategies.
http://www.onechicago.com/calculator.php
Lastly you can help yourself to free SSF quotes from our home page or navigate to
http://www.onechicago.com/?page_id=1289
If there is a posted EFP bid/ask for the symbol you select it will be posted along with the SSF quote.
Best.
Hope this s