COGENT COMMUNICATIONS HLDGS

Ticker: CCOI CUSIP: 19239V302 Class: Common Stock

RAMSEY QUANTITATIVE SYSTEMS's Holding History (CIK: 0001132897)

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

Q1 2018

Shares 4,499 Value ($000) $195 Avg Close $29.20 Range $23.71 - $30.80

Q4 2017

Shares 4,499 Value ($000) $204 Avg Close $31.42 Range $27.83 - $36.00

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	4,499	$195	$29.20	$23.71 - $30.80
Q4 2017	4,499	$204	$31.42	$27.83 - $36.00