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SEC Follow Up Exhibits Part C SEC_OEA_FCIC_001760-2501

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Reg SHO Pilot Report DRAFT 9/14/2006<br />

Study<br />

Construction<br />

Diether, Lee, and Werner<br />

(2006)<br />

Sample Period 2/1/05 to 7/31/05<br />

minus 4 weeks around May 2<br />

10 weeks before<br />

10 weeks after<br />

Sample 2004 Russell 3000 minus<br />

Stocks ● Amex and NASDAQ Small<br />

Cap stocks<br />

● Stocks with ticker changes<br />

or changes in listing venue<br />

during sample period<br />

● Stocks not in 2005 Russell<br />

● Stocks with prices > $100<br />

● Stocks with spreads > $1<br />

● Stocks delisted before 7/31<br />

NYSE: 448 pilot, 904 control<br />

Nasdaq: 376 pilot, 757 control<br />

Findings<br />

Short Selling Higher relative short sale<br />

volume.<br />

NYSE: higher number of short<br />

sale trades<br />

No impact on the number of<br />

NASDAQ short sale trades.<br />

Alexander and Peterson (2006) Wu (2006) <strong>SEC</strong><br />

4/1/05 to 5/31/05<br />

1 month before<br />

1 month after<br />

Original Pilot and Control minus<br />

● Amex stocks<br />

● Stocks delisted before 5/31<br />

One-to-one matches based on:<br />

● Listing market<br />

● Option status<br />

● 2 digit SIC code<br />

● Price, market capitalization,<br />

book-to-market, trading<br />

volume, and past returns<br />

Keep best 50% of matches<br />

NYSE: 224 pairs<br />

Nasdaq: 183 pairs<br />

No significant impact on short<br />

sale volume for either NYSE or<br />

NASDAQ.<br />

NYSE: Pilot stocks had a higher<br />

number of short sales trades and<br />

a lower average short sale trade<br />

size.<br />

NASDAQ: No impact on number<br />

of short sales trades or average<br />

short sale trade size.<br />

1/3/05 – 8/31/05<br />

4 months before<br />

4 months after<br />

NYSE stock in 2004 Russell<br />

3000 minus<br />

● Stocks not in 2005<br />

Russell<br />

● Stocks with prices > $900<br />

One-to-one matches based<br />

on:<br />

● Market cap<br />

● Price<br />

● Volume<br />

Exclude if no good control<br />

match<br />

NYSE: 332 pairs<br />

Examines only short selling<br />

on the NYSE<br />

Relative short selling<br />

increases for pilot stocks.<br />

Significant for small stocks<br />

but not large stocks.<br />

1/1/05 to 10/31/05<br />

4 months before<br />

6 months after<br />

Prepared by the Office of Economic Analysis 86 DRAFT<br />

2004 Russell 3000 minus<br />

● IPOs after May 1, 2004<br />

● Stocks delisted before 5/2<br />

Includes stocks delisted before<br />

10/31<br />

Listed: 504 pilot, 973 control<br />

Nasdaq: 439 pilot, 917 control<br />

Higher short sale volume and a<br />

higher number of short sale<br />

trades. No impact on short<br />

interest or days to cover. No<br />

impact on option trading<br />

volume or open interest.<br />

Trading is more balanced for<br />

pilot stocks.<br />

The increase in short selling is<br />

bigger for small stocks.

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