Stock

How can a security have a negative dividend amount?

 

How are Standard Industrial Classification (SIC) codes collected?

 

Why does the history for PowerShares QQQ Trust only extend to April 12, 2007?

 

Why do more NYSE-listed securities have missing closing bid & ask data during the period from 20001002 to 20010518?

 

What is the meaning behind an exchange code of 0?

 

When a security is delisted and then begins trading again at a later date, does CRSP pick it up again or is it lost forever?

 

What is when-issued trading? How are issues trading when-issued handled in the CRSP stock database?

 

What do the characters in the CUSIP number represent? Why do some values in the CUSIP field begin with a letter? Can type of security or share class be determined using only CUSIP number?

 

Are there advantages to using CRSP’s PERMNO instead of CUSIP number?

 

How are Shares Outstanding data collected and maintained?

 

What are ADRs and how are the shares outstanding computed?

 

What are equity securities and are they all included in the CRSP database?

 

Are IPO data available?

 

Why isn't AX (Archipelago Holdings Inc) covered in the CRSP Stock Database?

 

Why are there Closing Bids that are greater than or equal to Closing Asks in the CRSP Stock Database?

 

For any given point in time, why is the S&P 500 membership not equal to 500 in the CRSP Stock and Index databases?

 

Why does the Citigroup Volume has missing values for four dates?