WHITE MTNS INS GROUP LTD

Ticker: WTM CUSIP: G9618E107 Class: COM

HighVista Strategies LLC's Holding History (CIK: 0001335325)

Note: Option positions (PUT/CALL) are excluded.

Q3 2018

Shares 400 Value ($000) $374 Avg Close $926.90 Range $895.01 - $980.89

Q2 2018

Shares 400 Value ($000) $363 Avg Close $880.88 Range $804.40 - $933.70

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	400	$374	$926.90	$895.01 - $980.89
Q2 2018	400	$363	$880.88	$804.40 - $933.70