Maintain BUY with SoTP of Rs 871 at assign 25x (vs. 30x earlier) on Sep-20E core PAT (ex-CDSL), Rs 129/sh for the CDSL stake plus cash. BSE stumbled in 2QFY19, with revenue crawling up 0.3% QoQ to Rs 1.15bn. There is visible weakness in core business streams (across listing fees, cash equity and even currencies, where BSE is dominant). BSE continues to lose equity cash market share (-117 bps QoQ to 8.7%), while its grip on currency derivatives also loosened this quarter (-469bps QoQ to 47.3% share).