BOSTON (TheStreet) -- Tiger Global Management's hedge fund shuffled its holdings in online media stocks in the first quarter, including initiating a 4.8% portfolio stake in movie-streaming company Netflix (NFLX - Get Report), which has more than doubled in the past year.

Tiger Global also added to holdings of cable network and content provider Viacom ( VIA.B) and Internet retailer ( AMZN - Get Report), and cut back on Liberty Media tracking stock Liberty Capital ( LCAPA) and multimedia firm Cablevision Systems ( CVC).

Tiger Global raised its stake in its largest holding, Apple ( AAPL - Get Report), the maker of the iPad and iPhone, by 282,000 shares, bringing its portfolio value to $493 million. That number includes share-price appreciation as well as the additional shares.

Apple is now 12% of the portfolio, up from 10% at year-end, according to a filing with the Securities and Exchange Commission. Apple's shares are up 5.6% this year, but have quintupled over five years.

Assets of the New York-based hedge fund firm, run in part by Charles "Chase" Coleman III, grew 14% in the first quarter to $4.1 billion. The fund holds 33 stocks. In contrast, the benchmark S&P 500 Index rose 5.4%.

The fund trimmed its stake in Liberty Capital by 888,000 shares, worth about $26 million, but the company still makes up 4.8% of the fund. Liberty Capital's shares are up 37% this year and 105% over the past 12 months, so there may have been some profit taking.

Tiger Global also cut back on its Cablevision Systems stake by 619,000 shares. The company now accounts for 4.8% of the portfolio, worth $197 million. Cablevision's shares are up 2.5% this year and 43% over the past 12 months.

>>View Tiger Global's Portfolio

Hedge funds that manage more than $100 million are required to disclose their equity holdings, options and convertible debt on a Form 13F filed to the SEC within 45 days of the end of a quarter. Funds aren't required to report short positions betting on declines.

Here and on the following pages is a closer look at Tiger Global's most important holdings.

Netflix ( NFLX - Get Report) was the fund's big buy in the first quarter, at 832,000 shares. The stake was worth $198 million at quarter-end and made up 4.8% of the portfolio.

Netflix had 23.6 million subscribers to its DVD-rental-by-mail service at the end of March. Subscribers pay a monthly fee and take out up to eight movies at a time. The company recently added a streaming-only plan for $8 a month as it builds out its online streaming capacity. On Monday, the company said it reached a multiyear deal with film distributor Miramax to stream hundreds of titles through the movie-rental company's instant-viewing service.

Netflix shares are up 35% this year and 136% over the past 12 months. The S&P 500 Index is up 6.5% and 19%, respectively.

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Viacom ( VIA.B) is now 9% of the fund after the addition of 465,000 shares in the first quarter. It had a market value of $368 million at March 31.

Viacom owns a portfolio of cable networks that are a major part of most basic pay-television subscriptions. Its cable-network properties include: Nickelodeon, MTV, BET, Comedy Central, VH1, Country Music Television and Spike TV.

It also owns Paramount Pictures, which produces original motion pictures and owns a library of 2,500 films.

Its shares are up 25% this year through May 16 and 48% over the past 12 months.

Amazon ( AMZN - Get Report) is now the fifth-largest stock in the portfolio, at 6.2%, and is worth $254 million after the fund bought 410,000 shares in the quarter.

Amazon is the largest online retailer in the world, led by media sales of books, movies, music and video games, which represent a little over half of its sales. Electronics and general merchandise represent most of the remainder.

In the first quarter, Amazon reported a profit of $201 million, or 44 cents per share, down from $299 million, or 66 cents, a year earlier. Analysts had predicted 61 cents per share. Sales increased 38% to $9.9 billion, or 36% excluding a benefit from foreign exchange. In January, the company predicted $9.1 billion and $9.9 billion in revenue.

Amazon's shares are up 7% this year and 50% over the past 12 months.

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Another new add to the fund was RenaissanceRe ( RNR - Get Report) at a 1.5 million stake worth $100 million, and making up 2.4% of the portfolio.

The company is a Bermuda-based reinsurer that offers a range of property-catastrophe reinsurance products, catastrophe-exposed individual risk protection, and specialty reinsurance for risks that include workers' compensation, personal accidents, aviation and terrorism.

It reported a first-quarter loss of $248 million, or $4.69 per share, compared with a profit of $165 million, or $2.73 per share, a year earlier. Results were hurt by $427 million due to payouts for Australian flooding, the February New Zealand earthquake and Japan's earthquake.

Its shares are up 11% this year and 27% over the past 12 months.

Disclosure: TheStreet's editorial policy prohibits staff editors and reporters from holding positions in any individual stocks.