Notice of Filing of Amendment No. 2 Relating to NAqcess System and Accompanying Rules of Practice

• Text of notice (File name: 34-37302.txt)

• Table 1: NAqcess Quote and Order Entry Protocol

• Table 2: Performance of Limit Orders Versus Market Orders in Spread Classes 1/8 and 1/4, Price Range $10 to $20

• Table 3: Performance of Limit Orders Versus Market Orders in Spread Classes 1/8, 3/8, and 1/2; Price Range $20 to $30

• Figure 1: Performance of Hypothetical Limit Orders Versus Hypotheitcal Market Orders by Spread Class

http://www.sec.gov/rules/other/3437302.shtml