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Quest Diagnostics (DGX) Historical Monthly & Quarterly Returns

Dividend-adjusted returns by month and quarter. Compare performance across years.

2026

Jan+8.3%
Feb+13.3%
Mar7.5%
Apr3.4%
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

2025

Jan+8.6%
Feb+6.0%
Mar2.1%
Apr+5.8%
May2.7%
Jun+3.6%
Jul6.4%
Aug+8.5%
Sep+4.9%
Oct7.3%
Nov+7.5%
Dec8.3%

2024

Jan6.4%
Feb2.8%
Mar+6.6%
Apr+4.4%
May+2.7%
Jun3.6%
Jul+4.5%
Aug+10.3%
Sep1.1%
Oct+0.2%
Nov+5.1%
Dec7.3%

2023

Jan4.7%
Feb6.8%
Mar+2.3%
Apr1.4%
May4.4%
Jun+6.0%
Jul3.3%
Aug2.7%
Sep7.3%
Oct+7.4%
Nov+5.5%
Dec+0.5%

2022

Jan21.6%
Feb2.8%
Mar+4.3%
Apr1.7%
May+5.4%
Jun5.7%
Jul+3.2%
Aug8.2%
Sep2.1%
Oct+17.7%
Nov+5.7%
Dec+3.0%

2021

Jan+8.9%
Feb10.5%
Mar+11.0%
Apr+3.2%
May0.2%
Jun+0.2%
Jul+8.0%
Aug+7.8%
Sep4.9%
Oct+1.5%
Nov+1.3%
Dec+16.4%

2020

Jan+4.1%
Feb4.2%
Mar24.3%
Apr+38.2%
May+7.4%
Jun3.7%
Jul+12.0%
Aug12.5%
Sep+2.9%
Oct+7.2%
Nov+1.5%
Dec3.9%

2019

Jan+5.6%
Feb0.9%
Mar+3.9%
Apr+7.8%
May0.5%
Jun+6.1%
Jul+0.8%
Aug+0.3%
Sep+4.6%
Oct4.9%
Nov+5.2%
Dec+0.2%

2018

Jan+7.9%
Feb2.6%
Mar2.7%
Apr+1.4%
May+5.3%
Jun+3.2%
Jul1.6%
Aug+2.1%
Sep1.9%
Oct12.4%
Nov5.9%
Dec6.0%

2017

Jan+0.5%
Feb+6.0%
Mar+0.8%
Apr+7.5%
May+3.1%
Jun+2.2%
Jul2.2%
Aug+0.0%
Sep13.6%
Oct+0.6%
Nov+5.0%
Dec+0.0%

2016

Jan7.2%
Feb+1.3%
Mar+7.4%
Apr+5.8%
May+2.7%
Jun+5.5%
Jul+6.6%
Aug4.1%
Sep+2.7%
Oct3.8%
Nov+7.4%
Dec+5.1%

2015

Jan+6.5%
Feb1.3%
Mar+9.6%
Apr6.6%
May+5.3%
Jun3.6%
Jul+2.3%
Aug8.1%
Sep9.3%
Oct+11.2%
Nov+0.5%
Dec+4.1%

2014

Jan1.4%
Feb+1.0%
Mar+9.3%
Apr2.9%
May+7.1%
Jun2.0%
Jul+4.7%
Aug+3.5%
Sep4.0%
Oct+5.2%
Nov+2.9%
Dec+2.7%

2013

Jan0.0%
Feb3.1%
Mar+1.1%
Apr0.2%
May+9.8%
Jun1.5%
Jul3.8%
Aug+0.5%
Sep+5.9%
Oct3.0%
Nov+1.7%
Dec12.1%

2012

Jan+0.3%
Feb0.0%
Mar+5.6%
Apr5.7%
May1.4%
Jun+5.5%
Jul2.4%
Aug+3.5%
Sep+5.2%
Oct9.0%
Nov+0.1%
Dec+0.8%

2011

Jan+5.7%
Feb0.3%
Mar+1.7%
Apr2.2%
May+3.6%
Jun+1.4%
Jul8.6%
Aug7.3%
Sep1.4%
Oct+13.3%
Nov+5.1%
Dec1.0%

2010

Jan7.7%
Feb+1.9%
Mar+2.7%
Apr1.8%
May7.7%
Jun5.7%
Jul5.4%
Aug7.4%
Sep+16.3%
Oct2.6%
Nov+0.4%
Dec+9.4%

2009

Jan4.7%
Feb7.1%
Mar+3.6%
Apr+8.3%
May+1.7%
Jun+8.1%
Jul3.0%
Aug1.2%
Sep3.1%
Oct+7.2%
Nov+3.6%
Dec+4.2%

2008

Jan6.8%
Feb3.1%
Mar5.0%
Apr+11.0%
May+0.5%
Jun3.8%
Jul+9.9%
Aug+1.7%
Sep4.4%
Oct9.2%
Nov0.5%
Dec+11.5%

2007

Jan0.8%
Feb2.8%
Mar2.2%
Apr1.8%
May+0.3%
Jun+5.4%
Jul+7.6%
Aug1.3%
Sep+5.5%
Oct7.8%
Nov+3.5%
Dec3.9%

2006

Jan3.8%
Feb+7.0%
Mar3.0%
Apr+8.8%
May+0.0%
Jun+7.5%
Jul+0.5%
Aug+6.9%
Sep4.9%
Oct18.5%
Nov+6.9%
Dec0.3%

2005

Jan0.1%
Feb+4.3%
Mar+5.8%
Apr+0.8%
May0.8%
Jun+1.5%
Jul3.5%
Aug2.7%
Sep+1.1%
Oct7.4%
Nov+7.3%
Dec+2.7%

2004

Jan+16.5%
Feb2.5%
Mar0.1%
Apr+2.1%
May+2.1%
Jun1.4%
Jul3.2%
Aug+4.3%
Sep+3.1%
Oct0.6%
Nov+7.1%
Dec+1.9%

2003

Jan5.5%
Feb1.9%
Mar+13.2%
Apr+0.1%
May+6.0%
Jun+0.7%
Jul6.3%
Aug+0.4%
Sep+1.0%
Oct+11.6%
Nov+7.9%
Dec+0.2%

2002

Jan3.4%
Feb+2.3%
Mar+16.9%
Apr+10.9%
May4.9%
Jun1.6%
Jul29.8%
Aug7.2%
Sep+9.8%
Oct+3.7%
Nov12.6%
Dec+2.0%

2001

Jan27.1%
Feb+1.8%
Mar15.6%
Apr+38.6%
May+0.3%
Jun+21.1%
Jul7.7%
Aug9.3%
Sep1.5%
Oct+6.0%
Nov5.5%
Dec+16.1%

2000

Jan+11.2%
Feb+1.0%
Mar+16.0%
Apr+46.3%
May+15.3%
Jun+11.4%
Jul+35.0%
Aug+22.6%
Sep7.3%
Oct16.2%
Nov+16.8%
Dec+26.4%

1999

Jan+6.3%
Feb+12.7%
Mar+4.2%
Apr+2.8%
May+11.7%
Jun+7.2%
Jul5.9%
Aug+2.6%
Sep1.7%
Oct+7.7%
Nov+8.8%
Dec+0.4%

1998

Jan1.3%
Feb7.7%
Mar+9.5%
Apr+14.3%
May+12.8%
Jun+1.0%
Jul6.4%
Aug18.8%
Sep0.7%
Oct+0.7%
Nov+7.4%
Dec0.3%

1997

Jan+4.1%
Feb+7.1%
Mar11.9%
Apr+18.8%
May+4.7%
Jun+11.2%
Jul15.5%
Aug+7.4%
Sep9.3%
Oct1.3%
Nov2.3%
Dec+3.4%

1996

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec+8.0%

Avg

Jan0.3%
Feb+0.2%
Mar+2.0%
Apr+7.0%
May+2.9%
Jun+2.6%
Jul0.7%
Aug0.3%
Sep0.5%
Oct0.1%
Nov+3.4%
Dec+2.5%

Median

Jan0.1%
Feb0.6%
Mar+3.2%
Apr+3.0%
May+2.7%
Jun+1.5%
Jul2.4%
Aug+0.3%
Sep1.4%
Oct+0.2%
Nov+5.0%
Dec+1.4%

Win %

Jan47%
Feb43%
Mar67%
Apr67%
May72%
Jun66%
Jul41%
Aug55%
Sep41%
Oct52%
Nov83%
Dec70%

Frequently asked questions

What is the best performing month for Quest Diagnostics (DGX) stock?

Historically, April is the best performing month for Quest Diagnostics (DGX) stock with an average return of +6.98%.

What is the worst performing month for Quest Diagnostics (DGX) stock?

Historically, July is the worst performing month for Quest Diagnostics (DGX) stock with an average return of 0.69%.

What is the best performing quarter for Quest Diagnostics (DGX) stock?

Historically, Q2 is the best performing quarter for Quest Diagnostics (DGX) stock with an average return of +13.46%.

What is the worst performing quarter for Quest Diagnostics (DGX) stock?

Historically, Q3 is the worst performing quarter for Quest Diagnostics (DGX) stock with an average return of 1.48%.

What is the best performing year for Quest Diagnostics (DGX) stock?

Historically, 2000 is the best performing year for Quest Diagnostics (DGX) stock with a return of +364.53%.

What is the worst performing year for Quest Diagnostics (DGX) stock?

Historically, 2002 is the worst performing year for Quest Diagnostics (DGX) stock with a return of 20.65%.

Which month has the highest win rate for Quest Diagnostics (DGX) stock?

Historically, November has the highest win rate for Quest Diagnostics (DGX) stock — positive in 83% of years.

Which month has the lowest win rate for Quest Diagnostics (DGX) stock?

Historically, July has the lowest win rate for Quest Diagnostics (DGX) stock — positive in 41% of years.

Which quarter has the highest win rate for Quest Diagnostics (DGX) stock?

Historically, Q2 has the highest win rate for Quest Diagnostics (DGX) stock — positive in 80% of years.

Which quarter has the lowest win rate for Quest Diagnostics (DGX) stock?

Historically, Q3 has the lowest win rate for Quest Diagnostics (DGX) stock — positive in 52% of years.

Data & methodology

How are returns calculated?

We compare the closing price at the end of each period (month or quarter) with the closing price at the end of the previous period. The return is the percentage change. All prices are adjusted for dividends and stock splits. Based on historical prices from our data provider.

What is average vs median?

Average is the arithmetic mean of returns for each period across years. Median is the middle value. Both exclude empty cells. Use median to reduce impact of outliers.

What does the heatmap show?

Green cells indicate positive returns, red cells indicate negative returns. The darker the color, the stronger the move. Average and Median rows summarize each column across years.

What is Win %?

Percentage of years when the period had a positive return. For example, 80% for January means January was positive in 80% of the years in the selected range.