Dark

TMO
Thermo Fisher Scientific, Inc.
stock NYSE

At Close

Oct 17, 2025 3:59:50 PM EDT

539.08USD+0.421%(+2.26)1,980,286

0.00Bid 0.00Ask 0.00Spread

Pre-market

Oct 17, 2025 9:04:30 AM EDT

536.14USD-0.127%(-0.68)5,781

After-hours

Oct 17, 2025 4:04:30 PM EDT

538.91USD-0.032%(-0.17)24,755

OverviewOptionsHistoricalDark Pool LevelsShortsMore

TMO Volume Oct 17, 2025

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	41.56	835,426	43.65
NYSE	24.85	499,501	22.68
Nasdaq GSM	13.01	261,467	13.16
NYSE Arca	4.59	92,266	4.05
Cboe BZX	3.98	79,927	3.96
IEX	3.91	78,633	5.82
CHX	3.85	77,330	0.62
Cboe EDGX	1.25	25,204	1.75
MEMX	0.88	17,685	0.92
Nasdaq BX	0.57	11,419	0.84
Cboe BYX	0.52	10,477	0.87
NYSE National	0.31	6,305	0.55
Cboe EDGA	0.28	5,686	0.52
MIAX Pearl	0.17	3,469	0.25
Nasdaq PHLX	0.15	3,047	0.23
NYSE American	0.10	2,099	0.13
LTSE	0.00	0	0.00

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

TMO Nutrition Facts

0.87 servings per container

Serving size

2.30M

Calories

2.01M

% Day

% Avg

Off Exchange¹ 835K

41.56%

43.65%

NYSE 500K

24.85%

22.68%

Nasdaq GSM 261K

13.01%

13.16%

NYSE Arca 92K

4.59%

4.05%

Cboe BZX 80K

3.98%

3.96%

IEX 79K

3.91%

5.82%

CHX 77K

3.85%

0.62%

Cboe EDGX 25K

1.25%

1.75%

MEMX 18K

0.88%

0.92%

Nasdaq BX 11K

0.57%

0.84%

Cboe BYX 10K

0.52%

0.87%

NYSE National 6K

0.31%

0.55%

Cboe EDGA 6K

0.28%

0.52%

MIAX Pearl 3K

0.17%

0.25%

Nasdaq PHLX 3K

0.15%

0.23%

NYSE American 2K

0.10%

0.13%

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 835,426, which is 41.56% of today's total volume.
Today's Lit volume is 1,174,515, which is 58.44%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 43.65%.
The average Lit volume has been 56.35%.

TMO Volume by Exchange

Off Exchange

NYSE

Nasdaq GSM

NYSE Arca

Cboe BZX

IEX

CHX

Cboe EDGX

MEMX

Nasdaq BX

Cboe BYX