Quest Diagnostics stock heads into the open after a flat close

At the close on September 17, 2026, Quest Diagnostics stock finished at USD 149.01 on the New York Stock Exchange with a narrow intraday range, while the S&P 500 gained about 1.1 percent. Today, investors watch the broader market tone after the recent Fed rate hike.

Quest Diagnostics stock closed at USD 149.01 on the New York Stock Exchange on September 17, 2026, hardly changed within a day range of USD 148.79 to USD 148.99. Compared with the same session’s approximately 1.1 percent rise in the S&P 500, the shares lagged the broader market.

September 17, 2026 in numbers

Quest Diagnostics Inc. (ISIN US74834L1008, NYSE: DGX) ended trading on September 17, 2026 at USD 149.01 in USD terms on the New York Stock Exchange, based on quote data for that session. Per the same overview, the intraday range ran from a low of USD 148.79 to a high of USD 148.99, indicating a very tight band around the closing level. Trading volume for the day was modest compared with more volatile sessions earlier in the week, while the closing price remained within the established 52-week range reported for the stock.

In contrast to the stock’s nearly flat performance, the S&P 500 gained 85.95 points, or 1.1%, to close at 7,637.76 on September 17, 2026, marking a solid index advance for the day. This divergence left Quest Diagnostics trailing the broader benchmark over the session despite its fundamentally defensive profile as a low-beta name. As TradingView highlighted on September 17, 2026, Quest Diagnostics carries an estimated beta of 0.55 and a current dividend yield of about 1.39 percent, characteristics that often make the stock a defensive holding when interest rates move.

Market signals for today

Today, Quest Diagnostics enters the US session without a scheduled company-specific event in the immediate calendar, but the shares remain sensitive to broader macro and healthcare sector developments. The previous day’s advance in major US indexes, with the Nasdaq rising around 1.76 percent in the same period according to a market recap by Scanx.trade, sets a positive backdrop ahead of the opening bell. The company also appears in lists of low-volatility stocks that could benefit from investors’ search for stability after the latest Federal Reserve rate hike, as noted in the analysis by TradingView. With these conditions in mind, Quest Diagnostics stock heads into today’s session framed by its recent quiet trading day and the broader market’s response to monetary policy.