Overreaction modeling of Stock Market through Intraday OHLC Prices

The Stock Market is Largely Influenced by the Flow of News and Information. In an Efficient Stock Market, Reaction of Investors to the News and Information appears to be a Correct Response. While in an Inefficient Stock Market, Reaction of Investors seems to be Overreaction or Underreaction. Neither...

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Main Authors: saied madadi, nages barzgar, mir hosein mousavi
Format: Article
Language:fas
Published: Alzahra University 2014-06-01
Series:پژوهش‌های تجربی حسابداری
Subjects:
Online Access:http://jera.alzahra.ac.ir/article_614_3153281b5450430052662085413e8dfa.pdf
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author saied madadi
nages barzgar
mir hosein mousavi
author_facet saied madadi
nages barzgar
mir hosein mousavi
author_sort saied madadi
collection DOAJ
description The Stock Market is Largely Influenced by the Flow of News and Information. In an Efficient Stock Market, Reaction of Investors to the News and Information appears to be a Correct Response. While in an Inefficient Stock Market, Reaction of Investors seems to be Overreaction or Underreaction. Neither in Overreaction nor Underreaction, Stock Price is being Defined Correctly. Through Overreaction modeling of Stock Market processed by Intraday OHLC Prices, which Refer to Open, High, Low, and Close Stock Prices, it is proven that Stock Market Price shows a Geometric Brownian Motion. Then Overreaction and Underreaction is shown to be identified through recognizing the Standardized Volatility Distribution. Furthermore, Discontinuous Flow of News and Information is introduced to extend the Model with more Realistic Assumptions. Two Statistics and Hypotheses are then organized in order to test the Overreaction into good and bad News; ultimately, to ascertain the Results not affected by the Heteroscedasticity, Hypotheses need to be tested again by the Modified Statistics.
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spelling doaj.art-1b3d16b146794b4bb0124d386dc9cff82022-12-22T01:28:54ZfasAlzahra Universityپژوهش‌های تجربی حسابداری2251-85092538-15202014-06-013417919610.22051/jera.2014.614614Overreaction modeling of Stock Market through Intraday OHLC Pricessaied madadi0nages barzgar1mir hosein mousavi2دانشگاه علامه طباطبائیدانشگاه الزهراءدانشگاه الزهراءThe Stock Market is Largely Influenced by the Flow of News and Information. In an Efficient Stock Market, Reaction of Investors to the News and Information appears to be a Correct Response. While in an Inefficient Stock Market, Reaction of Investors seems to be Overreaction or Underreaction. Neither in Overreaction nor Underreaction, Stock Price is being Defined Correctly. Through Overreaction modeling of Stock Market processed by Intraday OHLC Prices, which Refer to Open, High, Low, and Close Stock Prices, it is proven that Stock Market Price shows a Geometric Brownian Motion. Then Overreaction and Underreaction is shown to be identified through recognizing the Standardized Volatility Distribution. Furthermore, Discontinuous Flow of News and Information is introduced to extend the Model with more Realistic Assumptions. Two Statistics and Hypotheses are then organized in order to test the Overreaction into good and bad News; ultimately, to ascertain the Results not affected by the Heteroscedasticity, Hypotheses need to be tested again by the Modified Statistics.http://jera.alzahra.ac.ir/article_614_3153281b5450430052662085413e8dfa.pdfStock MarketOverreactionUnderreactionReturnVolatilityOHLC Prices
spellingShingle saied madadi
nages barzgar
mir hosein mousavi
Overreaction modeling of Stock Market through Intraday OHLC Prices
پژوهش‌های تجربی حسابداری
Stock Market
Overreaction
Underreaction
Return
Volatility
OHLC Prices
title Overreaction modeling of Stock Market through Intraday OHLC Prices
title_full Overreaction modeling of Stock Market through Intraday OHLC Prices
title_fullStr Overreaction modeling of Stock Market through Intraday OHLC Prices
title_full_unstemmed Overreaction modeling of Stock Market through Intraday OHLC Prices
title_short Overreaction modeling of Stock Market through Intraday OHLC Prices
title_sort overreaction modeling of stock market through intraday ohlc prices
topic Stock Market
Overreaction
Underreaction
Return
Volatility
OHLC Prices
url http://jera.alzahra.ac.ir/article_614_3153281b5450430052662085413e8dfa.pdf
work_keys_str_mv AT saiedmadadi overreactionmodelingofstockmarketthroughintradayohlcprices
AT nagesbarzgar overreactionmodelingofstockmarketthroughintradayohlcprices
AT mirhoseinmousavi overreactionmodelingofstockmarketthroughintradayohlcprices