cik-cusip-mapping

[Merleen9170]

Hi there,
Many thanks for your .csv file including cik numbers and cusip numbers. I have a dataset including 20,000 cusips but when I merge that with this file to get their cik numbers, only 14,000 match. I think your file might be for several years ago? I mean can you update this csv file so that we can have the latest cik numbers too? It would be so helpful and I truly appreciate it.