The last two times this 'classic late-cycle activity' emerged, a recession soon followed

A disconnect between the best- and worst-performing sectors this year is raising a note of caution to some market watchers.

Recently, the degree to which the 2018 market-leading consumer discretionary sector is outperforming the biggest laggard, consumer staples, has reached extremes, said Larry McDonald, editor of the Bear Traps Report.

He recently flagged this development as a warning sign to his clients. Here are his reasons why.

• Consumer discretionary stocks are surging this year, led by names like Netflix and Amazon. The group's outperformance relative to the staples, down more than 11 percent this year, is currently near two standard deviations outside the average for the past 30 years.

• Typically, this action emerges within one year of a recession; a similar development appeared ahead of the 2000 recession and the financial crisis. Consumer staples has suffered this year as interest rates have risen from historically low levels.

• This kind of behavior is ultimately unsustainable, and one relationship investors should consider monitoring.

Videos

Trades to Watch

Trader Bios

About

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

Read more

Connect