Volkswagen could be making these stocks a bargain

Automobile stocks slumped this week, following news that Volkswagen rigged emissions tests for its cars.

Despite a bounce after Friday's opening bell, the S&P 500 industry group of automakers and suppliers had fallen almost 4 percent in one week, making these stocks one of the worst performing groups in the index.

Ford and GM fell about 4 and 3.5 percent respectively in the week, but the week's most troubled company in the group is auto parts manufacturer BorgWarner, which is down 8 percent.

However, one portfolio manager says the tumble in auto stocks could have created some attractive buying opportunities.

Read MoreVW faces 'about the worst situation': Ex-GM exec

Erin Gibbs, chief equity investment officer of S&P Capital IQ, noted that many automaker stocks are trading at an extreme discount to their average price target on the Street.

"I actually see auto manufacturers as being an overreaction, they're getting hit because they're part of that industry," Gibbs said Thursday on CNBC's "Trading Nation." "Ford, GM, Harley Davidson, they all look really good."

However, Gibbs, who oversees $12 billion in assets for S&P Capital, is less optimistic about the auto parts suppliers, which include BorgWarner, Delphi Automotive and Johnson Controls.

"[For] BorgWarner, I do think this [selloff] is justified," Gibbs said. "Break it down a little further and you can get some good buys," Gibbs said.

Read More As Volkswagen loses, other automakers could benefit

The charts appear to echo those views.

Ari Wald, head of technical analysis at Oppenheimer, said BorgWarner has been showing signs of trouble even before this week. The stock has tumbled more than 28 percent this year.

"The stock has certainly broken down, but there were some actually glaring signs of distribution heading into this breakdown, so we would continue to stay away," Wald said Thursday on "Trading Nation." "Now it is indeed oversold, but there are no signs of a base here."

Wald said the next level of support for BorgWarner would come in around $30, another 22 percent drop from where the stock closed Thursday.

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Trading Nation is a multimedia financial news program that shows investors and traders how to use the news of the day to their advantage. This is where experts from across the financial world – including macro strategists, technical analysts, stock-pickers, and traders who specialize in options, currencies, and fixed income – come together to find the best ways to capitalize on recent developments in the market. Trading Nation: Where headlines become opportunities.

Michael Santoli

Michael Santoli joined CNBC in October 2015 as a Senior Markets Commentator, based at the network's Global Headquarters in Englewood Cliffs, N.J.  Santoli brings his extensive markets expertise to CNBC's Business Day programming, with a regular appearance on CNBC's “Closing Bell (M-F, 3PM-5PM ET).   In addition, he contributes to CNBCand CNBC PRO, writing regular articles and creating original digital videos.

Previously, Santoli was a Senior Columnist at Yahoo Finance, where he wrote analysis and commentary on the stock market, corporate news and the economy. He also appeared on Yahoo Finance video programs, where he offered insights on the most important business stories of the day, and was a regular contributor to CNBC and other networks.

Follow Michael Santoli on Twitter @michaelsantoli

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