Samsung Electronics shares fell as much as 6.6 percent on Thursday after the company reported a profit miss in its semiconductor division, disclosed elevated capital expenditure projections, and announced no new shareholder return program.

Samsung's chip unit—the company's largest profit driver—reported earnings below analyst expectations. The miss came as the company signaled it will increase capex, reducing near-term free cash flow at a moment when investors have grown accustomed to regular buybacks or dividend increases.

Samsung's previous shareholder return program recently concluded. The market had anticipated a replacement announcement. The silence sent a signal: the company is prioritizing reinvestment over returning cash to shareholders.

This is a critical moment for Samsung's capital allocation strategy. Memory chip production and advanced foundry services are capital-intensive businesses where every dollar not returned is a dollar chasing competitive parity with SK Hynix and TSMC. Higher capex can be rational—particularly if Samsung is racing to match TSMC's process technology or expand memory market share. But it can also signal that management lacks confidence in near-term returns on existing assets.

The stock decline stood out against a broader market gain: the Nasdaq Composite rose 0.3 percent to close at 26,550, and the S&P 500 gained 0.3 percent to 7,744.