Does the PCAOB’s cross-border audit oversight affect the ...

3 The reduction from 1898 to 712 is largely caused by deleting penny stocks. Without deleting penny stocks and companies headquartered in the U.S., the sample size is 1192. Those penny stocks are mainly listed on OTC markets. They frequently miss trading volume and are very illiquid. To make the expected return model reliable, we drop all ................
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