Reliance Industries Ltd. has invested Rs 418 crore in five subsidiaries of Mercury Holdings SG.The company holds 33.33% shares in each of the subsidiaries, according to an exchange filing issued on Tuesday.It has also invested Rs 63 crore in the non-convertible debentures of one of the subsidiaries—BAM DLR Chennai Pvt.Mercury Holdings is a joint venture between Brookfield Infrastructure Partners LP and Digital Realty Trust LP..These are the five companies that RIL has invested in:.Shares of Reliance Industries closed 1.43% lower at Rs 2,423.95 apiece, as compared with a 0.54% fall in the benchmark BSE Sensex.