Document Type : Original Research


1 MSc. Student, Semnan University, Semnan, Iran

2 Ph.D. Student, Mazandaran University, Mazandaran, Iran

3 Instructor, Gonbad University, Gonbad Kavous, Iran


The purpose of this research is to determine the effect of unconditional conservatism, institutional ownership and size of institute auditor on stock price. For measure unconditional conservatism we use the Beaver and Ryan model (2000). In this study we use a sample of 101 firms listed in Tehran Stock Exchange during the period 2010 to 2014. The results of multiple regression model and panel data with fixed effects, showed that in 95% confidence, unconditional conservatism has significant negative effect on the stock price and institutional ownership has a significant positive effect on stock prices, but no significant correlation between the size of audit and stock prices. 


Bazri, A., (2008). "Foundations and the need for corporate governance". Conference on corporate governance, vol 99, pp. 5-17.
Beaver, W., Ryan, S., (2000). Biases and lags in book value and their effects on the ability of the book-to-market ratio to predict book return on equity. J. Account. Res. 38 (1), 127–148.
Cox, P., Brammer, S. and Millington, A., (2004). An empirical examination of institutional investor preferences for corporate social performance. Journal of Business Ethics, vol. 52, no. 1, pp. 27-42.
Ebrahimi, A., Moradi, M., Eskandar, H., (2010). "The impact of institutional ownership on the performance of companies listed on the Tehran Stock Exchange". Journal of Accounting and Auditing Research, no. 8, pp.1-8. (in persian)
Foster, G., (1973). "Stock Market Reaction to Estimates of Earnings per Share by Company Officials." Journal of Accounting Research 11, no. 1.
Graves, S. B. and Waddock, S. A. (1994). Institutional ownership and corporate social performance. Academy of Management Journal, vol. 37, no. 4, pp. 1034-1046.
Herrmann, D.R., Pornupatham, S., Vichitsarawong, T., (2008). The impact of the Asian financial crisis on auditors’ conservatism. J. Int. Account. Res. 7 (2), 43–63.
Johnson, M., (1999). Business cycles and the relation between security returns and earnings. Rev. Account. Stud. 4 (2), 93–117.
Mahoney, L. and Roberts, R. W. (2007). Corporate social performance, and financial performance and institutional ownership in Canadian firms. Accounting Forum, vol. 31, pp. 233-253.
Monem R. M. and S. Farshadfar, (2007). "Has earning quality declined over time?",Quality,Mone.
Nagel, S., (2004). Short sales, institutional investors, and the cross-section of stock returns. Journal of Financial Economics, forthcoming.
Spicer, B. H. (1978). Investors, corporate social performance and information disclosure: An empirical paper. Accounting Review, vol. 53, pp. 94-111.
Waddock, S. A. and Graves, S. B. (1997). The corporate social performance financial performance link. Strategic Management Journal, vol. 18, no. 4, pp. 303-319.