Billionaire hedge fund manager David Einhorn didn't get the outcome he expected when he shorted high-flying stocks like Amazon.com (AMZN) and Tesla (TSLA) as part of his "bubble basket," CNBC reported.

The Greenlight Capital investor is known for his timely short bets, most notably his May 2008 call against Lehman Brothers. But Einhorn told investors that "the bubble basket was particularly frustrating" in the second quarter this year, causing Greenlight to lose money.

Amazon stock was up 9% and Tesla stock was up 30% in the second quarter. Greenlight's second quarter performance was down 4%.

Einhorn said Amazon's bull case rests mostly on the fact that the retail giant hasn't put forth many details regarding its recent bid to acquire Whole Foods Market (WFM) , leaving details to the market's imagination. Tesla, Einhorn told investors, is lauded as the next Apple, but there are "many critiques" and a "few distinctions" that dismantle the comparison.

Apple stock traded up mid-afternoon. Tesla shares were down over 2% following CEO Elon Musk's comments calling his company's stock overvalued.

What's Hot On TheStreet

Amazon wants to upend every business, or so it seems: New day, a new business Amazon (AMZN) wants to dip its toes in. The latest looks to be the meal kit space, TheStreet reports.

In a July 6 trademark application, Amazon subsidiary Amazon Technologies Inc. revealed it's planning "prepared food kits composed of meat, poultry, fish, seafood, fruit and/or and [sic] vegetables...ready for cooking and assembly as a meal," as well as primarily grain-based offerings.

The product's tagline: "We do the prep. You be the chef." Amazon already sells other companies' meal kits, including Tyson Foods Inc.'s (TSN) Tyson Tastemakers. Martha Stewart is even offering meal kits on Amazon Fresh, the company's grocery delivery service. But, this may be the first hint of something bigger for Amazon, which would put it in direct competition with newly minted IPO Blue Apron (APRN) .

Elon Musk keeping it real for a change: Tesla's (TSLA) Elon Musk just gave the obsessed bulls on his company's future something to strongly consider, TheStreet reports.

Speaking at the National Governors Association Summer Meeting in Rhode Island on Saturday, Musk reiterated that shares of Tesla are trading at a level "higher than we have any right to deserve" based on optimism about the company's future.

"Those expectations sometimes get out of control," Musk added. Meanwhile, TheStreet reports Tesla could be at risk of a nasty surprise soon: the end of tax credits for electric cars in the U.S.

Procter & Gamble under siege: Peltz's Trian Fund Management plans to launch a fight for a board seat at Procter & Gamble (PG) , making it the largest company to face a proxy battle, The Wall Street Journal reported Monday.

Trian, which owns about $3.3 billion of P&G stock, is said to be seeking a single board seat for Peltz at the company's annual meeting that could take place in October. P&G have reportedly been in talks for five months, but the company is said to have rejected to name Peltz as a director last week.

Sales at P&G -- and its stock price -- have stalled due to pricing pressure and competition.

As TheStreet's Ron Orol reported in June, look for the consumer packaged goods company to announce plans for spin-offs, sales or even a swap out of business units. If major M&A doesn't come soon, a Trian director-battle or white paper chock full of activist demands could be next.

And Trian likely will demand significant M&A activity. Spinoffs and other major deals often follow when the activist investor acquires a large stake. Trian and other activist fund managers often push to have large companies break themselves up with the goal of extracting value by focusing the market on various parts of a business that might be hiding inside confusing conglomerate structures.

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