AlphaStocks
6.8
Consider Buy

Quest Diagnostics Inc (DGX)

As of Sep 20, 2026, Quest Diagnostics Inc (DGX) scores 6.8/10 on AlphaStocks' five-model composite, #19 of 168 Health Care stocks. At $247, DGX trades 24% above its model fair value of $200.

Health Care / Health Care Services

S&P 500

$246.52

Middle of the pack. No strong signal either way.

Consider Buy

Score based on 5 of 5 models — high confidence

Data as of Sep 20, 2026

#19out of 168 in Health Care

Is QUEST DIAGNOSTICS INC a Good Investment in 2026?

QUEST DIAGNOSTICS INC (DGX) scores 6.8 out of 10 on AlphaStocks' composite model, earning a Consider Buy rating. The Piotroski model rates QUEST DIAGNOSTICS INC as Strong (8/9). However, the Graham model rates it Caution — 86% above fair value. QUEST DIAGNOSTICS INC currently trades 24% above its estimated fair value of $200. QUEST DIAGNOSTICS INC ranks #19 out of 168 stocks in the Health Care sector.

This summary is algorithmically generated and is not financial advice.

Key Metrics

P/E28.1ROE13.8Market Cap28BDiv Yield1.5

Estimated Fair Value

$199.5724% above

Trading above estimated fair value — the market may be pricing in future growth.

Model-based estimate, not a price target.

5-Model Analysis

Each model evaluates this stock from a different angle. Combined, they form the composite score above.

Piotroski

Strong

8/9

Buffett

Attractive

Business quality & competitive moat

Graham

Caution

86% above fair value

Lynch

Neutral

PEG 3.8 · Stalwart

Greenblatt

Attractive

Earnings yield 6.4% · ROC 79%

Frequently Asked Questions

Is QUEST DIAGNOSTICS INC (DGX) a good investment?
As of Sep 20, 2026, Quest Diagnostics Inc (DGX) scores 6.8/10 on AlphaStocks' five-model composite, #19 of 168 Health Care stocks. At $247, DGX trades 24% above its model fair value of $200. That is a middle-of-the-pack score with no strong signal either way.
What is QUEST DIAGNOSTICS INC's Piotroski F-Score?
QUEST DIAGNOSTICS INC's Piotroski F-Score status is Strong. The raw score is 8/9. The Piotroski F-Score evaluates financial health using 9 fundamental signals including profitability, leverage, and operating efficiency.
Is DGX overvalued or undervalued?
Based on AlphaStocks' model-based fair value estimate of $200, DGX appears overvalued. The stock currently trades 24% above its estimated fair value. Trading above estimated fair value — the market may be pricing in future growth.
How does DGX compare to other Health Care stocks?
QUEST DIAGNOSTICS INC ranks #19 out of 168 stocks in the Health Care sector, placing it in the top 11% of its sector by composite score. This is a strong position relative to sector peers.
What do investment models say about DGX?
AlphaStocks evaluates DGX using five proven investment models. Piotroski: Strong; Buffett: Attractive; Graham: Caution; Lynch: Neutral; Greenblatt Magic Formula: Attractive. These models are combined into a single composite score of 6.8/10.

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Scores are algorithm-generated research tools, not investment recommendations. Past performance does not guarantee future results. Always do your own due diligence. Full disclaimer