Qualcomm stock heads into the open after a 5.82% slide

Qualcomm stock closed at USD 177.72 on the Nasdaq on September 18, 2026, marking a 5.82% decline for the session. The shares moved between an intraday high of USD 192.12 and a low of USD 175.97 before settling near the lower end of that range, putting the stock among the biggest losers in the S&P 500 that day.

September 18, 2026 in numbers

Qualcomm Inc. (ISIN US7475251036, Nasdaq: QCOM) saw its stock trade in a wide band between USD 192.12 and USD 175.97 on the Nasdaq on September 18, 2026, before closing at USD 177.72 in regular trading. Per Nasdaq data referenced in regional market summaries, this closing level represented a loss of 5.82% compared with the prior session and left the stock below its recent highs for the month. According to etnet, the broader market backdrop was mixed, with several large technology names posting gains even as Qualcomm moved sharply lower.

A separate overview of S&P 500 movers from The Economic Times likewise listed Qualcomm as one of the indexs top decliners on September 18, 2026, highlighting its 5.82% drop to USD 177.72. By contrast, that report noted that the S&P 500 index itself managed a modest gain on the day, underscoring how Qualcomm underperformed the broader US equity benchmark in the last completed session ahead of todays open.

Upcoming drivers today

Today, investors in Qualcomm are watching the broader macro and sector backdrop rather than a specific company event in the immediate calendar. The recent S&P 500 performance described by The Economic Times points to ongoing sensitivity of semiconductor and large-cap technology stocks to interest rate expectations, bond yields and geopolitical headlines. Any fresh signals on US monetary policy, global demand for electronics or artificial intelligence infrastructure, as well as moves by major peers in the chip sector, can therefore influence trading in Qualcomm shares in todays session.