By market open, shares had taken off 9.2% to $8.32.
In the three months to December, the electric component maker recorded a net loss of 10 cents a share. Analysts surveyed by Thomson Reuters had anticipated a loss of 4 cents a share.
Revenue of $39 million was 12.4% lower than a year earlier, but beat estimates by $2.5 million.
The San Diego-based company expects first-quarter revenue to be "flat to slightly up" on a sequential basis. Analysts forecast revenue of $42.3 million, an assumption of 8% growth in sales.
TheStreet Ratings team rates MAXWELL TECHNOLOGIES INC as a Hold with a ratings score of C. The team has this to say about their recommendation:
"We rate MAXWELL TECHNOLOGIES INC (MXWL) a HOLD. The primary factors that have impacted our rating are mixed -- some indicating strength, some showing weaknesses, with little evidence to justify the expectation of either a positive or negative performance for this stock relative to most other stocks. The company's strengths can be seen in multiple areas, such as its robust revenue growth, largely solid financial position with reasonable debt levels by most measures and impressive record of earnings per share growth. However, as a counter to these strengths, we find that the stock has had a generally disappointing performance in the past year."
- You can view the full analysis from the report here: MXWL Ratings Report