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Thomas Bulkowski’s successful investment activities allowed him to retire at age 36. He is an internationally known author and trader with 30+ years of stock market experience and widely regarded as a leading expert on chart patterns. He may be reached at

Support this site! Clicking on his books (below) takes you to If you buy ANYTHING, they pay for the referral.

Bulkowski's Event Pattern Resource

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Candles Chart
Small Patterns
Industrials (^DJI):
Transports (^DJT):
Utilities (^DJU):
Nasdaq (^IXIC):
S&P500 (^GSPC):
As of 12/19/2014
17,805 26.65 0.1%
8,989 36.12 0.4%
613 -0.16 0.0%
4,765 16.98 0.4%
2,071 9.42 0.5%
Tom's Targets    Overview: 12/12/2014
18,000 or 16,900 by 01/01/2015
9,300 or 8,500 by 01/01/2015
625 or 580 by 01/01/2015
4,800 or 4,500 by 01/01/2015
2,080 or 1,950 by 01/01/2015
Wilder RSI: -0.1%

Written by and copyright © 2005-2014 by Thomas N. Bulkowski. All rights reserved.

My book, Encyclopedia of Chart Patterns, has 53 chart patterns and 10 event patterns described including performance statistics.

If you click on this link and then buy the book (or anything) at, the referral will help support this site. Thanks. -- Tom Bulkowski

$ $ $

Event patterns are price patterns caused by significant events that affect securities. Events such as earnings releases, Dutch auction tender offers, stock broker rating upgrades and downgrades, I call event patterns. This page serves as the gateway to examining those patterns and how to trade them.

Event patterns have failure rates that are often significantly higher than your average chart pattern. For example, an Eve & Eve double bottom chart pattern has a bull market break even failure rate of 4%. The earnings flag event pattern has a 10% failure rate. A good earning surprise event pattern has a 29% failure rate. Ouch!

Despite the high failure rates, traders should know how to recover from or take advantage of event patterns. That is what the below links discuss.

Latest Releases

  • July 29, 2010: Stock splits. What happens to price before and after a stock split? Find out.


  1. Common stock offerings.
  2. Dead-cat bounce
  3. Dead-cat bounce, inverted
  4. Dutch auction tender offers
  5. Earnings surprise, bad
  6. Earnings surprise, good
  7. Earnings flag
  8. FDA drug approvals
  9. Same-store sales, bad
  10. Same-store sales, good
  11. Stock splits
  12. Stock rating downgrades
  13. Stock rating upgrades

-- Thomas Bulkowski

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Copyright © 2005-2014 by Thomas N. Bulkowski. All rights reserved. Eat well, stay fit, die anyway.