The investment will add fire to Ambani's battle for dominance in the retail market that is also being eyed by Jeff Bezos' Amazon.com and Walmart Inc's Flipkart.
Analysts are looking at a Jio IPO listing sometime next year, which may quickly lead to a jump in its valuation to a $100-billion company and give existing investors more muscle.
On BSE, the heavyweight stock jumped 2.38 per cent to Rs 1,617.70 -- its 52-week high. It surged 2.41 per cent to its one-year high of Rs 1,618 on NSE.
The latest deal is the sixth since April which values Jio platforms at an equity value of Rs 4.91 lakh crore and an enterprise value of Rs 5.16 lakh crore.