Remember when Tesla Inc.s market value surpassed General Motors Co.? That was just in October, though investors cant be blamed for thinking it was a lifetime ago.

The electric vehicle makers valuation has added the combined value of the Big Three - GM, Ford Motor Co. and Fiat Chrysler - in just five trading days through Monday. Tesla has grown by an average $14 billion on each of those days.

Tesla shares have been on a searing rally this year, recovering spectacularly from a steep pandemic-related sell-off, helped most recently by second-quarter delivery numbers that surpassed market estimates. In the past week, the company has roughly gained the value of Fiat Chrysler Automobiles N.V. every single day.

While skeptics have said the stocks current pace may be getting detached from reality and is instead being fueled by the power of the narrative," many believers abound.

There is definitely a significant retail component that is driving shares higher," Wedbush Securities analyst Daniel Ives said in an interview, referring to individual investors trading on platforms such as Robinhood.

(Also read: Opinion - Tesla's overexcited fans should cool down a little)

Still, a lot of big institutional investors now also want a piece of Tesla and the electric vehicle market, he said. In a Covid-19 pandemic and a dark macro environment, the company just put up a 90,000 delivery number, especially when other automakers are seeing herculean challenges."

Tesla said July 2 it delivered 90,650 cars in the second quarter, which compared with analysts average estimate for about 83,000 units.

The eagerness of big money to get into Tesla was also noted by Roth Capital Partners Craig Irwin, saying the companys valuation was being driven by fund managers who have Tesla grouped with Netflix Inc., Amazon.com Inc., Facebook Inc. and the like, and were valuing it as a large-cap growth stock.

Those managers do not understand that this is not a winner-takes-all industry that those other names are," Irwin said, noting that there are more than 180 electric cars that are slated to come out by 2025. There have been some duds along the way, but you can be sure there will be some winners in those 180."

Tesla shares have gained at least 5% in four out of five sessions through Monday. While it may not be unusual for a company that has had one-day 20% gains twice in its history, the surge shows a consistency that wasnt seen before. Its the first time the stock has posted four out of five sessions with gains of such magnitude.

The latest rally has brought Teslas gains this year to $170 billion, an amount that exceeds the market capitalization of all but 30 companies in the S&P 500.

Teslas valuation doesnt make sense by any traditional measure," said Ivan Feinseth of Tigress Financial Partners. However, it is not a traditional company, so how do you put a traditional measure to it?"

This story has been published from a wire agency feed without modifications to the text. Only the headline has been changed.

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Tesla adds $14 billion in a day to its valuation, leaves auto giants to eat dust - Hindustan Times