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SEC Follow Up Exhibits Part C SEC_OEA_FCIC_001760-2501

SEC Follow Up Exhibits Part C SEC_OEA_FCIC_001760-2501

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Reg SHO Pilot Report 2/12/2007<br />

Panel B: Average Regression Coefficients<br />

Market Quality = α + β Pilot + β Pre Pilot Market Quality<br />

i 1 i 2<br />

Variable Market Pilot PrePilotControl R-squared<br />

Daily Price Range(bps) Listed 3.68** 0.86** 0.27<br />

Daily Price Range(bps) Nasdaq 2.92* 0.79** 0.21<br />

Absolute Return – 5m(bps) Listed 0.68** 0.84** 0.37<br />

Absolute Return – 5m(bps) Nasdaq 0.34** a<br />

0.73** 0.21<br />

Absolute Return – 30m(bps) Listed 0.33** 0.83** 0.16<br />

Absolute Return – 30m(bps)<br />

Absolute Return – day(bps)<br />

Absolute Return – day(bps)<br />

Nasdaq<br />

Listed<br />

Nasdaq<br />

0.20<br />

-0.91<br />

0.47<br />

0.82**<br />

0.80**<br />

0.71**<br />

0.18<br />

0.09<br />

0.06<br />

Return Variance – 5m (x10 6 )<br />

Return Variance – 5m(x10<br />

Listed 0.49** 0.29** 0.10<br />

6 ) Nasdaq 0.22 0.84** 0.17<br />

Return Variance – 30m(x10 5 )<br />

Return Variance – 30m(x10<br />

Listed -0.66* 0.89** 0.01<br />

5 )<br />

Return Variance – day(x10<br />

Nasdaq -0.34* 1.03** 0.07<br />

4 )<br />

Return Variance – day (x10<br />

Listed -0.33 0.21** 0.12<br />

4 ) Nasdaq 0.38 0.44** 0.12<br />

Variance Ratio 5/30 Listed 0.08** 0.68** 0.44<br />

Variance Ratio 5/30 Nasdaq 0.01 a<br />

0.54** 0.21<br />

Variance Ratio 5/day Listed 0.12 1.03** 0.42<br />

Variance Ratio 5/day Nasdaq -0.82 0.03 0.00<br />

Variance Ratio 30/day Listed 0.02 0.49** 0.16<br />

Variance Ratio 30/day Nasdaq -0.26 0.17 0.00<br />

Prepared by the Office of Economic Analysis 67<br />

i

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