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DGX
Quest Diagnostics Inc.
stock NYSE

At Close

Sep 29, 2026 3:59:57 PM EDT

231.96USD-2.382%(-5.66)1,507,291

209.19Bid 255.03Ask 45.84Spread

Pre-market

Sep 28, 2026 9:24:30 AM EDT

236.32USD-0.547%(-1.30)0

After-hours

Sep 29, 2026 4:37:30 PM EDT

231.97USD+0.004%(+0.01)301,214

OverviewOptionsHistoricalExchange VolumeShortsMore

DGX Volume Sep 29, 2026

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	45.42	692,965	44.10
NYSE	26.47	403,869	30.89
IEX	9.98	152,285	5.72
Nasdaq GSM	6.98	106,563	7.36
Cboe BZX	3.09	47,106	3.60
NYSE Arca	2.05	31,298	3.10
Cboe EDGX	1.82	27,803	1.87
Cboe EDGA	0.74	11,289	0.44
Nasdaq BX	0.73	11,144	0.48
Cboe BYX	0.69	10,464	0.73
MEMX	0.59	8,944	0.53
NYSE National	0.51	7,728	0.43
NYSE American	0.36	5,484	0.20
MIAX Pearl	0.25	3,844	0.21
CHX	0.15	2,269	0.10
Nasdaq PHLX	0.13	1,990	0.18
Texas Stock Exchange LLC	0.05	706	0.06
24X National	0.00	1	0.00
LTSE	0.00	0	0.00

chartexchange.com

¹ A) Dark Pool or Off Exchange? B) Venues explained. C) All trades that update volume from the CTA.

DGX Nutrition Facts

1.48 servings per container

Serving size

1.03M

Calories

1.53M

% Day

% Avg

Off Exchange¹ 693K

45.42%

44.10%

NYSE 404K

26.47%

30.89%

IEX 152K

9.98%

5.72%

Nasdaq GSM 107K

6.98%

7.36%

Cboe BZX 47K

3.09%

3.60%

NYSE Arca 31K

2.05%

3.10%

Cboe EDGX 28K

1.82%

1.87%

Cboe EDGA 11K

0.74%

0.44%

Nasdaq BX 11K

0.73%

0.48%

Cboe BYX 10K

0.69%

0.73%

MEMX 9K

0.59%

0.53%

NYSE National 8K

0.51%

0.43%

NYSE American 5K

0.36%

0.20%

MIAX Pearl 4K

0.25%

0.21%

CHX 2K

0.15%

0.10%

Nasdaq PHLX 2K

0.13%

0.18%

Texas Stock Exchange LLC 706

0.05%

0.06%

24X National 1

0.00%

LTSE 0

0.00%

¹ A) Dark Pool or Off Exchange? B) Venues explained. C) All trades that update volume from the CTA.

chartexchange.com

DGX Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 692,965, which is 45.42% of today's total volume.
Today's Lit volume is 832,787, which is 54.58%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 44.10%.
The average Lit volume has been 55.90%.

DGX Volume by Exchange

Off Exchange

NYSE

IEX

Nasdaq GSM

Cboe BZX

NYSE Arca

Cboe EDGX

Cboe EDGA

Nasdaq BX

Cboe BYX

MEMX