Dark

WTM
White Mountains Insurance Group Ltd.
stock NYSE

Market Open

Aug 4, 2026 12:51:58 PM EDT

2111.84USD+0.537%(+11.27)9,448

2094.67Bid 2204.27Ask 109.60Spread

Pre-market

0.00USD-100.000%(-2097.73)0

After-hours

Aug 3, 2026 4:10:30 PM EDT

2101.47USD+0.043%(+0.90)0

OverviewHistoricalExchange VolumeShortsMore

WTM Volume Aug 4, 2026 12:35:04 PM EDT

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	48.94	4,311	40.19
NYSE	21.88	1,927	29.71
NYSE Arca	10.85	956	4.76
Nasdaq GSM	7.13	628	7.46
Cboe EDGX	3.09	272	1.87
MEMX	2.94	259	2.42
IEX	2.35	207	6.42
Cboe BZX	1.68	148	2.45
NYSE National	0.26	23	0.58
Cboe BYX	0.23	20	1.52
Nasdaq BX	0.17	15	1.10
MIAX Pearl	0.14	12	0.78
NYSE American	0.14	12	0.19
CHX	0.11	10	0.30
Cboe EDGA	0.09	8	0.22
Nasdaq PHLX	0.00	0	0.05
LTSE	0.00	0	0.00
24X National	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.

WTM Nutrition Facts

0.51 servings per container

Serving size

17.13K

Calories

8.81K

% Day

% Avg

Off Exchange¹ 4K

48.94%

40.19%

NYSE 2K

21.88%

29.71%

NYSE Arca 956

10.85%

4.76%

Nasdaq GSM 628

7.13%

7.46%

Cboe EDGX 272

3.09%

1.87%

MEMX 259

2.94%

2.42%

IEX 207

2.35%

6.42%

Cboe BZX 148

1.68%

2.45%

NYSE National 23

0.26%

0.58%

Cboe BYX 20

0.23%

1.52%

Nasdaq BX 15

0.17%

1.10%

MIAX Pearl 12

0.14%

0.78%

NYSE American 12

0.14%

0.19%

CHX 10

0.11%

0.30%

Cboe EDGA 8

0.09%

0.22%

Nasdaq PHLX 0

0.00%

0.05%

LTSE 0

0.00%

24X National 0

0.00%

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

chartexchange.com

WTM Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 4,311, which is 48.94% of today's total volume.
Today's Lit volume is 4,497, which is 51.06%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 40.19%.
The average Lit volume has been 59.81%.

WTM Volume by Exchange

Off Exchange

NYSE

NYSE Arca

Nasdaq GSM

Cboe EDGX

MEMX

IEX

Cboe BZX

NYSE National

Cboe BYX

Nasdaq BX