Reuters Market Eye - Housing Development Finance Corp falls 2.02 percent.
HDFC Bank falls 2.19 percent.
India counts HDFC stake in HDFC Bank as foreign - report.
HDFC has to bring down stake in HDFC Bank to make room for foreign investment in the bank, say traders.
HDFC is an Indian mortgage lender but is 77.85 percent owned by foreigners, according to stock exchange data.
(Reporting by Abhishek Vishnoi)