NEW YORK (

TheStreet

) -- Federal investigators raided three hedge-fund companies on Monday as part of a wider probe into insider trading allegations across the financial-services industry.

According to news reports, the Federal Bureau of Investigation executed search warrants at Stamford, Conn.-based Diamondback Capital Management, New York-based Level Global Investors and Boston-based Loch Capital Management.

The raids come on the heels of a report in the

Wall Street Journal

last week that outlined a wide-ranging investigation involving

Goldman Sachs

(GS) - Get Report

,

UBS

(UBS) - Get Report

,

Deutsche Bank

(DB) - Get Report

, a fund called Jennison Associates, which is part of

Prudential Financial

(PRU) - Get Report

and the hedge funds Ziff Brothers, Jana Partners and TPG-Axon Capital Management.

Here is a look at the top common stock holdings of the three firms involved in Monday's FBI probe, as of Sept. 30, according to their most recent filings with the

Securities and Exchange Commission

:

1. Diamondback Capital Management

Total investments:

$4.7 billion, heavily weighted in energy, utilities and financials.

Top stocks:

El Paso

( EP), 12.6 million shares worth $156.3 million, 3.3% of portfolio;

JPMorgan Chase

(JPM) - Get Report

, 2.5 million shares worth $96.4 million, 2% of portfolio;

Canadian Natural Resources

(CNQ) - Get Report

, 2.6 million shares worth $91.4 million, 1.9% of portfolio;

Plains Exploration & Production Co.

(PXP)

, 3.4 million shares worth $90.6 million, 1.9% of portfolio;

PPL Corp.

(PPL) - Get Report

, 3.3 million shares worth $90 million, 1.9% of portfolio;

Citigroup

(C) - Get Report

, 20.4 million shares worth $79.6 million, 1.7% of portfolio;

Petrohawk Energy Corp.

(HK)

, 3.4 million shares worth 54.7 million, 1.2% of portfolio;

State Street

(STT) - Get Report

, 1.3 million shares worth $50.1 million, 1.2% of portfolio;

Exxon Mobil

(XOM) - Get Report

, 750,000 shares worth $46.3 million, worth 1% of portfolio;

Quicksilver Resources

(KWK)

, 3.5 million shares worth $44 million, 0.9% of portfolio.

2. Level Global Investors

Total investments:

$3.1 billion, heavily weighted in media and technology.

Top stocks:

Virgin Media

(VMED)

, 19.3 million shares worth $445.6 million, 14.4% of portfolio;

Apple

(AAPL) - Get Report

, 538,303 shares worth $152.7 million, 4.9% of portfolio;

Monsanto

(MON)

, 2.95 million shares worth $141.4 million, 4.6% of portfolio;

Oracle Corp.

(ORCL) - Get Report

, 4.45 million shares worth $119.5 million, 3.9% of portfolio;

Sina Corp.

(SINA) - Get Report

, 2.2 million shares worth $112.4 million, 3.6% of portfolio; Citigroup, 27 million shares worth $105.6 million, 3.4% of portfolio;

McDonalds

(MCD) - Get Report

, 1.4 million shares worth $104.3 million, 3.4% of portfolio;

Fossil

(FOSL) - Get Report

, 1.7 million shares worth $82.8 million, 3% of portfolio;

Qualcomm Inc.

(QCOM) - Get Report

, 2 million shares worth $90.3 million, 2.9% of portfolio;

Baidu Inc.

(BIDU) - Get Report

, 847,000 shares worth $86.9 million, 2.8% of portfolio.

3. Loch Capital Management

Total investments:

$141.9 million, heavily weighted in media and technology.

Top stocks:

Apple, 48,100 shares worth $13.6 million, 9.6% of portfolio; Qualcomm, 200,200 shares worth $9 million, 6.4% of portfolio;

Google

(GOOG) - Get Report

, 12,900 shares worth $6.8 million, 4.8% of portfolio;

Varian Semiconductor Equipment Associates

( VSEA), 181,500 shares worth $5.2 million, 3.7% of portfolio;

Cablevision Systems

(CVC)

, 187,600 shares worth $4.9 million, 3.5% of portfolio;

Avago Technologies

(AVGO) - Get Report

, 216,800 shares worth $4.9 million, 3.4% of portfolio;

Marvell Technology Group

(MRVL) - Get Report

, 275,900 shares worth $4.8 million, 3.4% of portfolio;

Viacom

(VIA) - Get Report

, 125,700 shares worth $4.6 million, 3.2% of portfolio;

American Tower Corp.

(AMT) - Get Report

, 83,300 shares worth $4.3 million, 3% of portfolio;

Crown Castle International Corp.

(CCI) - Get Report

, 96,200 shares worth $4.2 million, 3% of portfolio.

-- Written by Lauren Tara LaCapra in New York

.

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Lauren Tara LaCapra

.

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.

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