New Delhi, Sept. 30 -- Shares of BSE, one of Asia's oldest stock exchanges, tanked 3.5% in Wednesday's trade on 30 September to rest at Rs.3,092 apiece, surrendering all of their previous-day gains as the boost from its entry into Nifty was offset by stake sales by Goldman Sachs and BNP Paribas.

The exchange entered the Nifty 50 for the first time, replacing IT giant Wipro as part of the NSE's twice-a-year index rebalancing. The Nifty 50 index rebalancing process was conducted on Tuesday, 29 September, in line with the monthly derivatives expiry.

However, the positive impact of its Nifty 50 inclusion was partly offset by stake sales by key institutional investors. Goldman Sachs and BNP Paribas have each offloaded their respective stakes...