Billionaire hedge fund manager David Einhorn is the founder and president of Greenlight Capital. His impressive portfolio has generated an annualized return over the past three years of +14.96%. Einhorn made several transactions in the second recent quarter to help this figure, including transactions on Apple Inc. (NASDAQ:AAPL), Nokia Corporation (ADR) (NYSE:NOK), and Micron Technology, Inc. (NASDAQ:MU).

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In the second quarter, Einhorn reduced his holdings in Apply by 0.73%. However, at 10.38% Apple continues to be the largest part of his portfolio valued at $827.73 million. Apple has been in the news for its record-breaking launch of its latest iPhones, iPhone 6S and 6S Plus. The company has sold 13 million units during the first weekend of the launch of these new phones.

While this launch marks a new record for the company, several of analysts consider these numbers to be weak. Unlike the last iPhone launch, these numbers include sales from China. Therefore, many analysts content that sales should have been significantly higher and boosted by consumers in China. Another reason for analyst’s disappointment is the view that a lot of these sales came from the iPhone Upgrade program; a new program that allows users to upgrade their iPhone every year; and not necessarily new purchases.

In Apple’s next earnings announcement, slated for October 27th, analysts will be watching unit sales closely for both the iPhone and the Apple Watch. While the Watch may not be a significant contributor to Apple’s revenues, its sales will be a good indication of Apple’s performance in the non-iPhone segment.

According to TipRanks, out of 37 analysts who have recently rated Apple’s stock, a majority (27) still recommends it as a Buy; 9 analysts have given the company Hold rating, while only 1 analyst has recommended to Sell the stock. Based on consensus estimates, the average 12-month price target for Apple’s stock is $147.23, an upside of about 33% over current levels.

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Among his other notable transactions, Einhorn has sold all shares of Nokia. The company has been in news thanks to its $17.55 billion acquisition of Alcatel-Lucent, a leading networking solutions provider, which is expected to be completed by mid-2016. In early October, Nokia announced that its leadership team will make up a majority of the new combined entity.

Another notable event for Nokia is the expiration of its no-compete clause with Microsoft for early next year, which allows it to reenter the phone market. Analysts will be watching this closely when the time comes.

According to TipRanks, a majority of analysts who have recently rated Nokia are not as bearish as Einhorn. Out of 6 analysts, 4 have rated Nokia as Buy, 1 has rated it as Hold, and 1 has given a Sell rating for the stock. The average consensus price target for Nokia, based on ratings given by these 6 analysts over the past 12 months, is $10.18, an upside of around 48% over current levels.

In terms of additions, Einhorn added Micron to his portfolio in the second quarter. He added about $689.16 million worth of shares, making it the second largest portion of his portfolio at 8.64%, following only Apple.

Last week, Micron reported its earnings for Q415. The company’s revenues of $3.6 billion were $40 million higher than consensus estimates. However, when compared to same quarter last year, revenues were down 15%. The company’s DRAM business is facing challenges due to slowing demand for PCs; but, this weakness was somewhat offset by sales of mobile DRAM business. The mobile business was highly profitable with an operating margin of 27.3%.

Micron’s non-GAAP EPS for the quarter of $0.37 was higher than consensus estimates of $0.33. However, the company’s guidance for Q1’16 was way off analysts’ estimates: for the quarter, the company expects revenues of between $3.35 billion and $3.6 billion, as opposed to estimates of $3.74 billion, and non-GAAP EPS of between $0.20 and $0.26, as opposed to estimates of $0.38.

According to TipRanks’ statistics, 23 analysts have recently rated Micron’s stock. A large number of these (19) share the sentiment of Einhorn and have recommended to Buy the stock; 4 have given it a Hold rating while no analyst has recommended to Sell the stock. The average 12-month consensus price target for Micron’s stock is $22.83, an upside of nearly 22% from current levels.