DETROIT, Mich.–Shares of Altra Industrial Motion (NASDAQ:AIMC)are off 10% in the last month since the brake system maker reported an earnings miss of negative 7.1%.

Analysts were surprised by the fourth-quarter falloff after three straight quarters of better-than-expected results. The current trading range lags the performance of the S&P 500 in the last month.

The company’s non-GAAP earnings for 2018 were $2.86 per share, lagging the Zacks Consensus Estimate of $2.89. Results were improved 25.4% from the year-ago figure of $2.28, but the company’s performance through three quarters led Wall Street to expect something better.

Click here for the details on Altra’s financial summary.

AIMC is a designer of electromechanical power transmission motion control products. The Zacks Consensus Estimate for its current year earnings has been revised 8.4% downward over the last 30 days.

The company does pay a 17-cent dividend on April 2.

Relative to peers, Altra Industrial Motion generates a yield of 2.2%, which is high for Machinery stocks but still below the market’s top dividend payers.

AIMC was trading at $30 .15 on March 25, which is 15% above where it was trading the first week of January, but 10.5% below where it traded just before its earnings release.

AIMC’s products are marketed under a variety of brands, including: Ameridrives, Bauer Gear Motor, Bibby Turboflex, Boston Gear, Delroyd Worm Gear, Formsprag Clutch, Guardian Couplings, Huco, Industrial Clutch, Inertia Dynamics, Jacobs Vehicle Systems, Kilian, Kollmorgen, Lamiflex Couplings, Marland Clutch, Matrix, Nuttall Gear, Portescap, Stieber, Stromag, Svendborg Brakes, Thomson, TB Wood’s, Twiflex, Warner Electric, Warner Linear and Wichita Clutch.