Quest Diagnostics Stock Gains 36.3% YTD: What's Behind the Rally?
Published . Updated .
DGX's 36.3% YTD rise reflects momentum in advanced diagnostics, channel growth, AI adoption and cost savings.
Directly affected
- DGX Quest Diagnostics
Named in this report.
Indirectly affected
- SUPX SUPERX AI TECHNOLOGY LTD
GA selected SUPX as a RELATED security because its canonical security name directly matches this event's themes: technology, ai. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
- MEDS DATAMEDS AI, INC. COMMON STOCK
GA selected MEDS as a RELATED security because its canonical security name directly matches this event's themes: stock, ai. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
- ABAT AMERICAN BATTERY TECHNOLOGY
GA selected ABAT as a RELATED security because its canonical security name directly matches this event's themes: technology. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
- ACM AECOM TECHNOLOGY CORP
GA selected ACM as a RELATED security because its canonical security name directly matches this event's themes: technology. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
- AOSL ALPHA & OMEGA SEMICONDUCTOR LT SHS
GA selected AOSL as a RELATED security because its canonical security name directly matches this event's themes: semiconductor. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
- BBAI BIGBEAR AI HLDGS INC
GA selected BBAI as a RELATED security because its canonical security name directly matches this event's themes: ai. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
Price reaction, T-5 to T+3
DGX's 36.3% YTD rise reflects momentum in advanced diagnostics, channel growth, AI adoption and cost savings.
Source: Nasdaq Markets
The price since 25 Sep 2026: Quest Diagnostics (DGX) versus the S&P 500
Since the first closing price after “Quest Diagnostics Stock Gains 36.3% YTD: What's Behind the Rally?,” Quest Diagnostics (DGX) is -1.16%. The S&P 500 fund (SPY) is +0.15% over the same days, a -1.31% difference versus the market.
Filings that name Quest Diagnostics (DGX) around 25 Sep 2026
- Rohit Khanna buy Quest Diagnostics (DGX) ($1,001 - $15,000). That is 21 days before publication, inside 30 days. The filing is listed beside the story “Quest Diagnostics Stock Gains 36.3% YTD: What's Behind the Rally?.”
- Donald J Trump buy Aecom (ACM) ($1,001 - $15,000). That is 28 days before publication, inside 30 days. The filing is listed beside the story “Quest Diagnostics Stock Gains 36.3% YTD: What's Behind the Rally?.”
- Donald J Trump sell Aecom (ACM) ($1,001 - $15,000). That is 32 days before publication, inside 60 days. The filing is listed beside the story “Quest Diagnostics Stock Gains 36.3% YTD: What's Behind the Rally?.”
Public disclosure filings, not a recommendation. The filing link is the source document. News use of these reports still sits under 5 U.S.C. § 13107(c).
Who gains and who loses around Quest Diagnostics (DGX)
Companies carried with this story
- DGX Quest Diagnostics
Quest Diagnostics (DGX) is linked, with no stored direction, high confidence in the 25 Sep 2026 story “Quest Diagnostics Stock Gains 36.3% YTD: What's Behind the Rally?.” Reason on file: The reported development directly names QUEST DIAGNOSTICS INC in the headline; GA resolved that company to DGX
- SUPX SuperX AI Technology
In “Quest Diagnostics Stock Gains 36.3% YTD: What's Behind the Rally?,” SuperX AI Technology (SUPX) is linked, with no stored direction, medium confidence. Reason on file: GA selected SUPX as a RELATED security because its canonical security name directly matches this event's themes: technology, ai. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
- MEDS DataMeds AI
For “Quest Diagnostics Stock Gains 36.3% YTD: What's Behind the Rally?,” DataMeds AI (MEDS) is linked, with no stored direction, medium confidence. Reason on file: GA selected MEDS as a RELATED security because its canonical security name directly matches this event's themes: stock, ai. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
- ABAT American Battery Technology
American Battery Technology (ABAT) is linked, with no stored direction, medium confidence in the 25 Sep 2026 story “Quest Diagnostics Stock Gains 36.3% YTD: What's Behind the Rally?.” Reason on file: GA selected ABAT as a RELATED security because its canonical security name directly matches this event's themes: technology. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
- ACM Aecom
In “Quest Diagnostics Stock Gains 36.3% YTD: What's Behind the Rally?,” Aecom (ACM) is linked, with no stored direction, medium confidence. Reason on file: GA selected ACM as a RELATED security because its canonical security name directly matches this event's themes: technology. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
- AOSL Alpha & Omega Semiconductor
For “Quest Diagnostics Stock Gains 36.3% YTD: What's Behind the Rally?,” Alpha & Omega Semiconductor (AOSL) is linked, with no stored direction, medium confidence. Reason on file: GA selected AOSL as a RELATED security because its canonical security name directly matches this event's themes: semiconductor. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
- BBAI BigBear.ai Holdings
For “Quest Diagnostics Stock Gains 36.3% YTD: What's Behind the Rally?,” BigBear.ai Holdings (BBAI) is linked, with no stored direction, medium confidence. Reason on file: GA selected BBAI as a RELATED security because its canonical security name directly matches this event's themes: ai. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
Quest Diagnostics (DGX)
On 25 Sep 2026, “Quest Diagnostics Stock Gains 36.3% YTD: What's Behind the Rally?” is the story that connects Quest Diagnostics (DGX) to this story.
The link for Quest Diagnostics (DGX) is this: The reported development directly names QUEST DIAGNOSTICS INC in the headline; GA resolved that company to DGX
Also listed, SuperX AI Technology (SUPX): GA selected SUPX as a RELATED security because its canonical security name directly matches this event's themes: technology, ai. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
Price levels for Quest Diagnostics (DGX)
DGX traded between 225.80 and 240.47 across 20 sessions. The latest close on file is 234.86. MEDS traded between 2.57 and 5.17 across 20 sessions. The latest close on file is 2.65. SUPX traded between 6.15 and 7.09 across 10 sessions. The latest close on file is 6.72.
What the saved facts support for Quest Diagnostics (DGX)
46 out of 100
“Quest Diagnostics Stock Gains 36.3% YTD: What's Behind the Rally?” scores 46 out of 100. The score uses 1 sources, and 7 linked companies.