GPS设备制造商佳明（GRMN）今日盘中股价大跌12.84%，引发市场关注。尽管公司上调了全年利润预期，但第三季度财报显示运营成本上升和部分业务板块收入下滑，引发了投资者的担忧。
根据佳明公布的最新财报，公司第三季度经调整后的每股收益为1.99美元，高于市场预期的1.96美元。同时，公司将全年每股收益预期从此前的8美元上调至8.15美元。然而，这些积极因素似乎被其他财务指标所掩盖。
值得注意的是，佳明第三季度总运营费用增长15%，达到5.9亿美元。公司表示，这主要与人员相关成本上升有关，影响了研发以及销售、一般和管理费用。此外，户外业务板块收入下降5%，主要受到汽车用GPS和探险手表产品疲软的影响。汽车原始设备制造商（OEM）业务板块收入也下降了2%。这些因素综合导致投资者对公司未来增长前景产生担忧，从而引发了股价的大幅下跌。
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