Dark

WTM
White Mountains Insurance Group Ltd.
stock NYSE

At Close

Mar 9, 2026 3:59:53 PM EDT

2142.01USD-1.089%(-23.59)28,300

0.00Bid 0.00Ask 0.00Spread

Pre-market

0.00USD-100.000%(-2165.60)0

After-hours

Mar 9, 2026 4:50:30 PM EDT

2147.50USD+0.256%(+5.49)170

OverviewHistoricalExchange VolumeShortsMore

WTM Volume Mar 9, 2026

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Exchange	Day%	Volume	30D%
Off Exchange¹	63.26	5,465	47.32
NYSE	9.50	821	24.69
Nasdaq GSM	5.98	517	6.44
IEX	5.80	501	6.34
NYSE Arca	5.30	458	4.62
Cboe EDGX	2.28	197	2.80
MEMX	2.07	179	1.69
NYSE National	1.45	125	0.37
Cboe BZX	1.45	125	2.78
Cboe BYX	1.01	87	1.46
Nasdaq BX	0.96	83	0.60
Cboe EDGA	0.65	56	0.20
MIAX Pearl	0.20	17	0.27
Nasdaq PHLX	0.05	4	0.10
CHX	0.03	3	0.06
NYSE American	0.01	1	0.26

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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

0.49 servings per container

Serving size

17.46K

Calories

8.64K

% Day

% Avg

Off Exchange¹ 5K

63.26%

47.32%

NYSE 821

9.50%

24.69%

Nasdaq GSM 517

5.98%

6.44%

IEX 501

5.80%

6.34%

NYSE Arca 458

5.30%

4.62%

Cboe EDGX 197

2.28%

2.80%

MEMX 179

2.07%

1.69%

NYSE National 125

1.45%

0.37%

Cboe BZX 125

1.45%

2.78%

Cboe BYX 87

1.01%

1.46%

Nasdaq BX 83

0.96%

0.60%

Cboe EDGA 56

0.65%

0.20%

MIAX Pearl 17

0.20%

0.27%

Nasdaq PHLX 4

0.05%

0.10%

CHX 3

0.03%

0.06%

NYSE American 1

0.01%

0.26%

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 5,465, which is 63.26% of today's total volume.
Today's Lit volume is 3,174, which is 36.74%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 47.32%.
The average Lit volume has been 52.68%.

WTM Volume by Exchange

Off Exchange

NYSE

Nasdaq GSM

IEX

NYSE Arca

Cboe EDGX

MEMX

NYSE National

Cboe BZX

Cboe BYX

Nasdaq BX