Dark

WTM
White Mountains Insurance Group Ltd.
stock NYSE

At Close

Jan 14, 2026 3:59:37 PM EST

2076.22USD+0.886%(+18.23)15,267

0.00Bid 0.00Ask 0.00Spread

Pre-market

Jan 12, 2026 8:38:30 AM EST

2044.01USD-0.679%(-13.98)0

After-hours

Jan 14, 2026 4:00:30 PM EST

2076.96USD+0.036%(+0.74)19

OverviewHistoricalExchange VolumeShortsMore

WTM Volume Jan 14, 2026

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	49.40	7,542	40.61
NYSE	15.40	2,351	25.15
Nasdaq GSM	7.92	1,209	9.58
IEX	5.34	816	5.07
NYSE Arca	5.06	773	6.12
Cboe EDGX	3.81	581	3.72
Cboe BZX	3.68	562	3.94
Cboe BYX	2.78	425	1.16
Nasdaq BX	2.69	410	0.88
MEMX	1.72	263	2.13
NYSE National	1.09	166	0.22
MIAX Pearl	0.66	101	0.51
NYSE American	0.20	30	0.15
Cboe EDGA	0.18	28	0.34
CHX	0.07	10	0.13
Nasdaq PHLX	0.00	0	0.29

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

WTM Nutrition Facts

0.76 servings per container

Serving size

19.97K

Calories

15.27K

% Day

% Avg

Off Exchange¹ 8K

49.40%

40.61%

NYSE 2K

15.40%

25.15%

Nasdaq GSM 1K

7.92%

9.58%

IEX 816

5.34%

5.07%

NYSE Arca 773

5.06%

6.12%

Cboe EDGX 581

3.81%

3.72%

Cboe BZX 562

3.68%

3.94%

Cboe BYX 425

2.78%

1.16%

Nasdaq BX 410

2.69%

0.88%

MEMX 263

1.72%

2.13%

NYSE National 166

1.09%

0.22%

MIAX Pearl 101

0.66%

0.51%

NYSE American 30

0.20%

0.15%

Cboe EDGA 28

0.18%

0.34%

CHX 10

0.07%

0.13%

Nasdaq PHLX 0

0.00%

0.29%

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 7,542, which is 49.40% of today's total volume.
Today's Lit volume is 7,725, which is 50.60%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 40.61%.
The average Lit volume has been 59.39%.

WTM Volume by Exchange

Off Exchange

NYSE

Nasdaq GSM

IEX

NYSE Arca

Cboe EDGX

Cboe BZX

Cboe BYX

Nasdaq BX

MEMX

NYSE National