Foreign institutional investors (FIIs) put in more than Rs 22,000 crore (about $4 billion) in the Indian stock market in May 2013, the highest in the past three months, according to Sebi.  

The inflow in May comes after a 16-month low net investment of Rs 5,414 crore in April. The cumulative net investment in equities in the first five months of calendar year 2013 stood at Rs 83,205 crore (about $15.35 billion).

In May, FIIs were gross buyers of shares worth Rs 74,469 crore, while they sold equities worth Rs 52,300 crore, translating into a net inflow of Rs 22,169 crore, according to market regulator Sebi. This was the highest net investment by FIIs in stocks since the February infusion of Rs 24,439.3 crore.