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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

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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 09/17/2014
17,157 24.88 0.1%
8,652 81.89 1.0%
557 -1.33 -0.2%
4,562 9.43 0.2%
2,002 2.59 0.1%
Tom's Targets    Overview: 09/12/2014
17,300 or 16,800 by 10/01/2014
8,700 or 8,000 by 10/01/2014
530 or 570 by 10/01/2014
4,450 or 4,800 by 10/01/2014
1,960 or 2,050 by 10/01/2014
Wilder RSI: -0.5%

Written by and copyright © 2005-2013 by Thomas N. Bulkowski. All rights reserved.

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


Statistics and other information on most of these event patterns can be found in the book, Encyclopedia of Chart Patterns, Second Edition

-- Thomas Bulkowski




See Also

Copyright © 2005-2013 by Thomas N. Bulkowski. All rights reserved. Eat well, stay fit, die anyway.