Dark

TMO
Thermo Fisher Scientific, Inc.
stock NYSE

At Close

Jul 31, 2026 3:59:56 PM EDT

574.33USD-0.423%(-2.44)2,112,918

0.00Bid 0.00Ask 0.00Spread

Pre-market

Jul 31, 2026 9:27:30 AM EDT

572.27USD-0.780%(-4.50)551

After-hours

Jul 31, 2026 4:00:30 PM EDT

574.30USD-0.005%(-0.03)497,814

OverviewOptionsHistoricalExchange VolumeShortsMore

TMO Volume Jul 31, 2026

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	39.26	829,476	41.15
NYSE	33.05	698,300	30.59
IEX	8.87	187,467	6.27
Nasdaq GSM	7.52	158,927	8.98
Cboe BZX	4.22	89,193	4.40
NYSE Arca	2.67	56,304	3.39
Cboe EDGX	1.39	29,459	1.65
Nasdaq BX	0.58	12,240	0.41
MEMX	0.53	11,201	0.71
Cboe BYX	0.41	8,562	0.56
NYSE National	0.36	7,599	0.31
Cboe EDGA	0.30	6,311	0.37
MIAX Pearl	0.26	5,438	0.18
CHX	0.21	4,523	0.75
Nasdaq PHLX	0.20	4,153	0.13
NYSE American	0.16	3,436	0.14
Texas Stock Exchange LLC	0.00	7	0.00
24X National	0.00	0	0.01
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.

TMO Nutrition Facts

0.90 servings per container

Serving size

2.34M

Calories

2.11M

% Day

% Avg

Off Exchange¹ 829K

39.26%

41.15%

NYSE 698K

33.05%

30.59%

IEX 187K

8.87%

6.27%

Nasdaq GSM 159K

7.52%

8.98%

Cboe BZX 89K

4.22%

4.40%

NYSE Arca 56K

2.67%

3.39%

Cboe EDGX 29K

1.39%

1.65%

Nasdaq BX 12K

0.58%

0.41%

MEMX 11K

0.53%

0.71%

Cboe BYX 9K

0.41%

0.56%

NYSE National 8K

0.36%

0.31%

Cboe EDGA 6K

0.30%

0.37%

MIAX Pearl 5K

0.26%

0.18%

CHX 5K

0.21%

0.75%

Nasdaq PHLX 4K

0.20%

0.13%

NYSE American 3K

0.16%

0.14%

Texas Stock Exchange LLC 7

0.00%

24X National 0

0.00%

0.01%

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

TMO Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 829,476, which is 39.26% of today's total volume.
Today's Lit volume is 1,283,120, which is 60.74%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 41.15%.
The average Lit volume has been 58.85%.

TMO Volume by Exchange

Off Exchange

NYSE

IEX

Nasdaq GSM

Cboe BZX

NYSE Arca

Cboe EDGX

Nasdaq BX

MEMX

Cboe BYX

NYSE National