Subject: Rule Filing SR-NASD-98-21 Date: 3/30/98 11:39 AM Dear Mr. Katz, In commenting on the Actual Size Rule my first thought is the fact that mandatory size is not required on any other exchange. Beyond that, I believe the pilot project clearly showed no adverse effects on the marketplace. Furthermore, with the introduction of the SEC Order Handling Rules any investor, regardless of size, can dictate the inside quote, reflecting desired size. Speaking with my Market-Making hat on, I also believe this Rule will address one inequity between Market-Makers and ECN's, by basically leveling the playing field, (at least as far as size is concerned). Last, but not least, in my opinion, the main benefactors of mandatory size have been professional traders, which is not beneficial to the marketplace as a whole. Sincerely, Michael Barone Manager, Nasdaq Trading William Blair & Co. Chicago, Ill.