1924

Share price                             Minimum commission per 100 shares
$1 to $20.                               $12.50
$20.25-40.                             $15
$40.25-60.                             $17.50
$60.25-80.                             $20.


Citation: A Century of Stock Market Liquidity and Trading Costs, Charles M. Jones, Columbia Business School - Finance and Economics: May 23, 2002 (Appendix 2)

May 8, 1919 to October 30, 1924
Share price                             Minimum commission per 100 shares
$1 to $9.875                           $7.50
$10 to $124.875                    $15
$125 and over                        $20

October 30, 1924 to January 3, 1938
Share price                             Minimum commission per 100 shares
$1 to $9.875                           $7.50
$10 to $99.875                      $12.50 + 0.1% of amount traded, rounded down to the nearest $2.50
$100 to $199.875                  $25
$200 and over                       $10 + 0.1% of amount traded, rounded down to the nearest $5