BENGALURU, March 18 (Reuters) - Indian shares opened lower on Monday, on broad-based profit booking near record high levels, while small- and mid-caps were muted after posting their worst week in 15 months.

The blue-chip NSE Nifty 50 index lost 0.15% to 21,990.10, while the BSE Sensex shed 0.08% to 72,587.30, as of 9:15 a.m. IST.

Twelve of the 13 major sectors logged losses. Small- and mid-caps were flat at the open.

(Reporting by Bharath Rajeswaran in Bengaluru; Editing by Mrigank Dhaniwala)