The UpTick Rule

Posted by urbandigs

Wed Oct 8th, 2008 10:28 AM

A: I want to discuss the uptick rule, being that the ban on short selling expires today. I don't listen to Fast Money as much anymore, but I just happened to have it on last night and overheard a discussion on re-instating the uptick rule as the ban on short selling expires. Assuming the ban does expire as planned, I agree with this 100% and actually argued on this side of the debate many months ago with a wall street insider who happens to be a compliance attorney working on short sale ban implementation! Now, my general feeling on short selling is that I think it has a place in the free markets, so it should be restored. Then again, I'm a trader deep down inside. Let me explain this uptick rule for those that don't know what it is and more importantly, how trading firms used to get around it.

First, a quick stock trading 101: Stocks are traded on exchanges. There are bids and there are offers; just like in any trade. The inside market for a stock consists of two prices; the highest bid & the lowest offer! . The difference between the highest bid and the lowest offer that make up this inside market is known as the spread. The image below shows you the highlighted inside market (highest bid & lowest offer) of the stock JPM with both an uptick and a downtick (refer back to this image as you read on):

uptick-rule.jpg

There are two ways to sell short:

1) hit the bid and sell short (not taking advantage of the spread)
2) place an offer and have a third party execute the sell trade (buy from you taking advantage of the spread)

Now, to understand how the uptick rule worked you first need to grasp one very simple concept regarding how the inside market changes as stocks trade.

  • As a stock rises, new higher bids are coming in and the lowest offers are either being bought or are being removed by the trader offering it. The inside market changes and an UPTICK occurs as a NEW HIGH BID comes in!


  • As a stock falls, new lower offers are coming in and the highest bids are either being sold to or are being removed by the trader bidding it. The inside market changes and a DOWNTICK occurs as the BID DISAPPEARS and new low offers come in.


  • To sum up the basics, an uptick occurs as the stock is on its way UP (with price rising); as evidence by a new high bid coming into the inside market. A downtick occurs as bids leave and the stock is on its way down (with price falling). Now lets get on with the official definition of the uptick rule, that on its own, probably would be confusing for someone who doesn't trade or familiar with the rule.

    UPTICK RULE - A rule established by the SEC that requires that every short sale transaction be entered at a price that is higher than the price of the previous trade. This rule was introduced in the Securities Exchange Act of 1934 as Rule 10a-1. The uptick rule prevents short sellers from adding to the downward momentum when the price of an asset is already experiencing sharp declines.

    I bolded that last part because that really is the reason for the uptick rule. That is, to prevent massive selling pressure from being applied as a stock is falling which would increase the downward momentum of the move. You see, if a stock is falling, there will be no chance to short it because the stock will experience mostly downticks as bids are either removed or hit by the selling trader (look at the left trading box of JPM which has a downtick).

    Without this rule in place, you could just sell all you wanted as the stock fell, putting more force onto the down move. With the rule there, the downrun has probably ended and the stock will see new high bids come in (allowing me to short again as the downtick changes to an uptick) making the short trade less likely to be immediately profitable.

    When I was trading with stocks in fractions, the uptick rule was in place. But traders got around it using something called bullets. In those days, bullets had to be setup for any one individual stock that you wanted to trade. To set it up, you had a 2nd account where you bought X shares of the stock, with X being the ultimate number of shares you could short on the stock with a downtick. Then, you buy puts on the stock. I forget the formula used but the idea was that the put option contract always offset the losses or gains in the stock that was held long in the 2nd account; making the trade net out to zero or very close to it.

    Once this was setup, bam, you could short on a downtick the number of shares that you bought in that 2nd account, because technically you were selling shares of a position that you were long in; when in reality you were day trading it short and bypassing the uptick rule. Another less complicated way was for the trader to do two simultaneous trades; first you place a small high bid order creating an uptick and then you quickly hit the bid underneath you to take the short position. This required very fast hands.

    I'm not sure if bullets exist anymore or if they caught on to it, and for the record, I never used them because I only focused on trading long positions. But it proves that if they re-institute the uptick rule, wall street will likely find a way around it! So they better be on top of it. And there you have it, the uptick rule explained for those that didn't quite understand the official definition.


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