Dec 30 (Reuters) - India's equity benchmarks opened little changed on Tuesday, as investors remained cautious on concerns over foreign fund flows amid thin year-end volumes.

The Nifty 50 index was largely unchanged at 25,940.9, while the BSE Sensex index shed 0.11% to 84,600.99, as of 9:15 a.m. IST.

Nine of the 16 major sectors logged gains at the open. The broader small-caps and mid-caps were flat.

The Nifty has lost 0.9% in three sessions, while the Sensex has dropped 1% in four sessions due to profit-taking in a thin year-end market.

Foreign investors net sold Indian shares worth 27.6 billion rupees ($307 million) on Monday, as per provisional data. This would be their biggest single-day selling in about three weeks.

Overseas investors have offloaded a record high $18.2 billion of Indian shares in 2025.

($1 = 89.8950 Indian rupees)

(Reporting by Vivek Kumar M and Bharath Rajeswaran; Editing by Rashmi Aich and Mrigank Dhaniwala)