Pairs trading srategy - how to conduct research ?

Hi, everyone! May be its not the most suitable section of the forum to post my question, but nevertheless...

I need to analyze one particular pair of correlated stocks for market neutral arbitrage trading strategy (short outperfoming stock & long underperfoming), in other words - betting on shrinking spread.

Im stucked with the structure of my research, as I havent done it before. Could you please advice on how to conduct such a kind of research & how to formulate trading idea, that is based on this research.

I understand, that I need to find underlying assumptions for under/over perfoming through corporate news, industry conditions, financial statements analysis... What should I pay attention for?

Please, share your experience on how to conduct and structure such a type of research.

Thanks.

6 Comments
 
Best Response

Pair trading equities is by no means a market neutral arbitrage strategy. The closest you can get to that by pair trading equities is by finding two stocks that are as close to perfectly correlated as possible and selling the spread when it goes positive / buying it when it goes negative, or by trying to take advantage of pricing inefficiencies.

If you are interested in making directional bets based on equity pairs (which I suspect is what you are trying to do), here are a couple of examples:

buy GOOG sell AAPL - betting that android phones cut into apple's relative share in the smart phone market, iphone on multiple carriers will cannibalize more of apple's sales than are already priced into the market, etc.

buy BAC, sell GS - see big unit's "GS still leads, BAML catching up" post from earlier

"Conducting research" is really just finding a reason to put on the trade (whether that reason is fundamental/technical/other is up to you).

 

Here's what you need to do.

  1. Obtain a historical time series of prices for both securities over the same window.

  2. Perform a simple linear regression of one onto the other. This will give you the spread you are looking for.

  3. Check to see if the two time series are cointegrated (i.e. does the spread time series have a stationary distribution)

  4. If 3 is false, your strategy won't work. If 3 is true, now you know that you have a mean reverting spread. You can now find confidence bands around the mean level of the spread. If the spread goes above the confidence band, short the spread, if it goes below, long the spread. Ultimately, you are expecting the spread will revert back to it's mean. When that happens, close the position.

Make sure you follow very strict stop loss procedures. This trade is often called the widowmaker, especially on equities. When it blows up (i.e. the securities lose their cointegration property) you can get completely wiped out.

Good luck! Hope it helps.

-MBP
 

check out pairslog.com great site

"Seeing this house and your fine sword and hearing how you're importing and exporting chinamen, let me guess, you must be fucking rich." Kenny Powdersss
 

Vel velit amet quisquam quas consequuntur harum est aut. Dolor labore et consequatur ratione. Quibusdam optio nisi impedit et nisi. Eum nisi qui nobis delectus ab.

In est accusantium provident quibusdam dolores et. Ipsa omnis corporis nostrum eum. Eius maiores velit reprehenderit accusantium voluptas unde. Corrupti cum et itaque soluta fugiat ipsum. Eius perspiciatis impedit consequatur laudantium in et odit. Ut blanditiis eveniet ipsa et odio enim.

Et nesciunt quo esse sequi. Dolor assumenda sed corporis voluptatibus molestiae.

Career Advancement Opportunities

June 2026 Investment Banking

  • Evercore 01 99.4%
  • Moelis & Company 01 98.8%
  • JPMorgan 01 98.2%
  • Guggenheim Partners 01 97.7%
  • Morgan Stanley 07 97.1%

Overall Employee Satisfaction

June 2026 Investment Banking

  • Moelis & Company No 99.4%
  • Morgan Stanley 01 98.8%
  • Evercore 01 98.2%
  • BMO Capital Markets 12 97.6%
  • Banco Santander 01 97.1%

Professional Growth Opportunities

June 2026 Investment Banking

  • Moelis & Company No 99.4%
  • Evercore No 98.8%
  • Morgan Stanley 05 98.2%
  • JPMorgan No 97.7%
  • BMO Capital Markets 12 97.1%

Total Avg Compensation

June 2026 Investment Banking

  • Vice President (14) $434
  • Associates (43) $259
  • 3rd+ Year Analyst (8) $210
  • 2nd Year Analyst (22) $179
  • Intern/Summer Associate (13) $156
  • 1st Year Analyst (75) $151
  • Intern/Summer Analyst (67) $101
notes
16 IB Interviews Notes

“... there’s no excuse to not take advantage of the resources out there available to you. Best value for your $ are the...”

Leaderboard

1
redever's picture
redever
99.2
2
kanon's picture
kanon
99.0
3
BankonBanking's picture
BankonBanking
99.0
4
Secyh62's picture
Secyh62
99.0
5
DrApeman's picture
DrApeman
98.9
6
Betsy Massar's picture
Betsy Massar
98.9
7
GameTheory's picture
GameTheory
98.9
8
dosk17's picture
dosk17
98.9
9
CompBanker's picture
CompBanker
98.9
10
Jamoldo's picture
Jamoldo
98.8
success
From 10 rejections to 1 dream investment banking internship

“... I believe it was the single biggest reason why I ended up with an offer...”