Subject: File No. S7-08-09
From: Charles G diPierro, M.D.

May 4, 2009

Hi,

We need a strong, enforced, market-wide uptick rule. It's almost criminal that this rule was removed and still has not been put back in place. It prevents market manipulation and, when enforced, gives retail investors especially some piece of mind that the market isn't as easily manipulated by professional and very large investors.

Naked shorting and leveraged short ETF need to be banned for similar reasons.

If the SEC does not implement these measures, there will be no trust that the US markets are a fair and safe place to invest.

Do not delay. These changes should already been implemented.