CDSL has a diversified revenue stream, ~33% of the revenue is annuity and ~40% is market-linked (and uncertain). Huge opportunity for demat of ~60K unlisted public companies is now bearing fruits. At current run-rate, it will contribute ~7% to growth with negligible incremental cost. Transactions charges/KYC revenue will revive with better market conditions. New revenue streams like National Academic Depository (NAD) and e-warehouse receipts will start contributing only from 2HFY20E. We like CDSL based its (1) Annuity revenue stream, (2) Cash-rich balance sheet (Net cash of Rs 6.50bn, ~32% of Mcap), (3) Option value and (4) Unlisted opportunity. We expect CDSL revenue/EBITDA/PAT to grow at a CAGR of 14/11/8% over FY19-21E. Risks include regulatory changes, market slowdown and increase in competition. We maintain BUY on CDSL post higher revenues but lower margins in 1QFY20. Annuity revenue (+23% YoY) is driving growth led by the unlisted opportunity. Our SoTP of Rs 320 is based on 30x core FY21 earnings plus net cash.