Data Dictionary:

Filers:
id
name
street
city
state
state_incorporation
zip_code
business_phone
cik
irs_number

Stocks:
id
name
ticker
new_stock_id
is_delisted
delisting_date

holdings:
id
filer_id
stock_id
quarter_id
name
cusip_number
market_value
shares
security_type - (SH CALL PUT or PRN)
symbol
percent_of_portfolio
ranking

quarters:
id
end_of_quarter_date


(optional table)
filing_info:
id
filer_id
form_type - original or amended
sec_file_number
quarter_id,
filed_as_of_date
mv_multiplier
edgar_url
filing_type - original, restatement or addition
created_at