Benchmark bonds rallied on Monday on reports that RBI could raise the amount foreign institutional investors can buy in government debt by tweaking some of the sub-categories, while keeping the overall limit intact.
Reports said the government could raise the limit to which FIIs can buy government debt by $5 billion to $25 billion, while reducing the portion that long-term investors can buy to $5 billion from $10 billion. The tweaks would keep the overall FII limit for government debt investments at $30 billion.

Source - http://www.financialexpress.com