Iconic RV firms Winnebago Industries Inc. and Thor Industries Inc. were down in heavy volume today (Jan. 26), extending recent losses as an analyst raised concerns over dealer inventories.

Investor’s Business Daily reported that Northcoast Research lowered both stocks to a neutral rating from buy due to concerns that dealer inventory is at an “unsustainable level” for 2018.

Winnebago shares on Thursday tumbled more than 8%, losing sight of its 50-day moving average. Thor Industries plunged 8.8% to 136.10, joining Winnebago below its 50-day line.

If a stock breaks below the 50-day line in heavy volume after a long run and can’t rally back, it’s often a signal that buying demand is drying up and the stock’s run is ending. Investors may want to take at least partial profits to protect their gains after both stocks outperformed the market in 2017.

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