Publish date:

This Week's ETF Winners & Losers

Anything related to mortgages is hit.

Bundled securities tracking homebuilders, financials and REITs were the worst performers of a losing week for stocks as the health of the credit markets continued to deteriorate.

Among REIT-related ETFs, the

iShares FTSE NAREIT Mortgage REITs

(REM) - Get iShares Mortgage Real Estate ETF Report

dropped 18.4% for the week to $32.11. The

iShares FTSE NAREIT Retail

(RTL) - Get Pacer Benchmark Retail Real Estate SCTR ETF Report

ETF shed 4% to $39.04. The

Ultra Real Estate ProShares

(URE) - Get ProShares Ultra Real Estate Report

ETF slid 2.2% to $40.45.

In the financial sector,

Bear Stearns

(BSC)

was crushed following several negative headlines during the week. On Friday finance chief Sam Molinaro said during a conference call that the credit market was "about as bad as I've seen it in 22 years." The stock ended with an 11.7% loss on the week.

Other lenders and finance names fell hard, as well.

Countrywide

(CFC)

,

Lehman Brothers

(LEH)

and

Merrill Lynch

(MER)

slid 6.5% or more.

The

Rydex S&P Equal Weight Financials

(RYF) - Get Invesco S&P 500 Equal Weight Financials ETF Report

TheStreet Recommends

ETF dropped 3.3% to $45.17. The

PowerShares Dynamic Financials

(PFI) - Get Invesco DWA Financial Momentum ETF Report

ETF gave back 3.2% to $23.80. The

First Trust Financials AlphaDex

(FXO) - Get First Trust Financials AlphaDEX Fund Report

ETF ended down 2.7% to $17.71.

Homebuilders were also feeling the crunch. On Wednesday,

Beazer Homes

(BZH) - Get Beazer Homes USA, Inc. Report

plunged as much as 40% and dragged down the rest of the homebuilding sector amid rumors the company was facing a liquidity problem. Beazer quickly moved to deny the speculation, but still ended with a 27% decline for the week.

The

iShares Dow Jones U.S. Home Construction

(ITB) - Get iShares U.S. Home Construction ETF Report

ETF tumbled 7% to $25.15. The

SPDR S&P Homebuilders

(XHB) - Get SPDR S&P Homebuilders ETF Report

ETF finished the week lower by 5% to $25.44.

On the flipside, the

PowerShares Lux Nanotech

(PXN)

ETF was one of few winners during the week, thanks to gains in several of its holdings.

Among them,

Arrowhead Research

(ARWR) - Get Arrowhead Pharmaceuticals, Inc. Report

surged 35%, and

Accelrys

(ACCL)

added 5.7% on the week. The PowerShares Lux Nanotech ETF climbed 3.9% to end the week at $17.10.