Dark

WTM
White Mountains Insurance Group Ltd.
stock NYSE

At Close

May 1, 2026 3:59:57 PM EDT

2161.62USD-3.153%(-70.37)19,453

2066.25Bid 2289.00Ask 222.75Spread

Pre-market

0.00USD-100.000%(-2231.99)0

After-hours

May 1, 2026 4:00:30 PM EDT

2163.50USD+0.087%(+1.88)32

OverviewHistoricalExchange VolumeShortsMore

WTM Volume May 1, 2026

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	34.49	6,706	34.15
NYSE	25.11	4,883	33.39
Nasdaq GSM	11.41	2,219	7.62
IEX	9.99	1,943	8.59
NYSE Arca	4.33	841	4.23
Cboe EDGX	3.20	622	3.11
Cboe BZX	3.10	602	3.45
Cboe BYX	2.59	504	1.49
MEMX	2.33	453	2.08
NYSE National	1.26	245	0.47
Nasdaq BX	1.16	225	0.60
CHX	0.41	79	0.11
Cboe EDGA	0.22	43	0.13
MIAX Pearl	0.16	32	0.25
Nasdaq PHLX	0.14	27	0.17
NYSE American	0.10	20	0.17

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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

1.18 servings per container

Serving size

16.51K

Calories

19.44K

% Day

% Avg

Off Exchange¹ 7K

34.49%

34.15%

NYSE 5K

25.11%

33.39%

Nasdaq GSM 2K

11.41%

7.62%

IEX 2K

9.99%

8.59%

NYSE Arca 841

4.33%

4.23%

Cboe EDGX 622

3.20%

3.11%

Cboe BZX 602

3.10%

3.45%

Cboe BYX 504

2.59%

1.49%

MEMX 453

2.33%

2.08%

NYSE National 245

1.26%

0.47%

Nasdaq BX 225

1.16%

0.60%

CHX 79

0.41%

0.11%

Cboe EDGA 43

0.22%

0.13%

MIAX Pearl 32

0.16%

0.25%

Nasdaq PHLX 27

0.14%

0.17%

NYSE American 20

0.10%

0.17%

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

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WTM Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 6,706, which is 34.49% of today's total volume.
Today's Lit volume is 12,738, which is 65.51%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 34.15%.
The average Lit volume has been 65.85%.

WTM Volume by Exchange

Off Exchange

NYSE

Nasdaq GSM

IEX

NYSE Arca

Cboe EDGX

Cboe BZX

Cboe BYX

MEMX

NYSE National

Nasdaq BX