Uptick Rule - Effectiveness of The Rule

Effectiveness of The Rule

Gordon J. Alexander and Mark A. Peterson, in an academic study of the uptick rule, found "the execution quality of short-sell orders is adversely affected by the Uptick Rule, even when stocks are trading in advancing markets. This is inconsistent with one of the three stated objectives of the rule, i.e., to allow relatively unrestricted short selling when a firm's stock is advancing so that the rule does not affect price discovery during such times."

Karl B. Diether, Kuan-Hui Lee, and Ingrid M. Werner stated in their study: "The results suggest that the effect of the price-tests on market quality can largely be attributed to the distortions in order flow created by the price-tests in the first place. Therefore, we believe that the price-tests can safely be permanently suspended."

One empirical study found no statistically significant link between the uptick rule and the rates of price decline.

A 2006 study by Alexander and Peterson found no substantial differences between stocks subjected to the rule and those that were not.

While the market experienced a brief upward trend when the rule first became effective in February 1938, it ultimately continued the broad decline that had begun in 1937—though the fact that the market suffers a short-term decline does not necessarily establish that the rule is ineffective in contributing to long-term market confidence.