Canada, the biggest supplier of steel and aluminium to the United States, said it would retaliate if hit by US tariffs. The developments and a possible trade war between the nations led to global criticism of the US President's move and a slide in world stock markets.

Earlier, the Sensex hit an all-time high of 34,488 level intra day. Nifty too touched lifetime high of 10,659 in trade today.

While the Sensex is up 27.94% or 7,440 points since the beginning of this year, the Nifty has gained 28 percent or 2,296 points.  The BSE midcap and smallcap indexes too rose 58% and 61 percent, respectively.

The Sensex rose 104 points to close above the 33,000 mark forthe second consecutive day at 33,147 level on last day of October series. The Nifty too rose 48 points to close above the 10,300 levelfor the first time. The index ended at 10,343 level in Thursday's trade.

The Public Enterprises Survey, tracking the performance of CPSEs in 2015-16, revealed that the top three loss-making CPSEs -- SAIL, BSNL and Air India -- incurred a loss equal to 51.65 per cent of the total loss made by the top 10 loss-making CPSEs in 2015-16. SAIL entered the list of top 10 loss-making CPSEs, apart from ONGC Videsh, Rashtriya Ispat Nigam, PEC and BHEL.

The Indian stock market ended in the red as markets remaind cautious ahead of the exit polls data that is due tomorrow and results for assembly elections and US Federal Policy meet due later in the week.

Warren Buffett talking about Ajit Jain, widely believed to be a strong contender to succeed the billionaire investor at Berkshire Hathaway, in his annual letter to shareholders.

'Share buyback' has become the buzz word after the recent announcements of IT majors Cognizant and TCS to buy back shares. In fact, recent reports have suggested that Infosys may follow a similar strategy and announce a share buy back of $2.5 billion (Rs 17,000 crore) in April.

The government received Rs 34,800 crore from the sale of minority stake in an array of state- owned firms this year even as it prepared ground for the first strategic sale of PSUs in over 12 years.

In the past seven months, the number of buyback issues has risen to a three-year high, driven by PSUs.

India Inc. reined in dividend payouts in 2015/16, a consequence of subdued corporate results in the fiscal year.

Piyush Goyal, the new mine and minerals minister, has a tough job on his hand. Right now, the sector is in a complete mess, marred with cases that have gone right up to the apex court - from double taxation to banning exports of ores to allegations of under-pricing by PSUs

Opening on a positive note, NMDC stock gained 5.26 per cent to Rs 91 on the BSE. On the NSE, its shares climbed 5.38 per cent to Rs 91.