This industrial software company continues to grow its key metric and cash flow.Industrial software stock PTC (PTC 1.60%) is the sort of company investors should consider buying into on a dip. The company's recent third-quarter results, for the period ended June 30, and commentary on its fiscal 2025 were impressive in the current environment, and this company's long-term growth is only starting. Here's why PTC is a great stock for long-term holders.Attractive end marketsPTC's software solutions help custome ...