COGENT COMMUNICATIONS HLDGS

Ticker: CCOI CUSIP: 19239V302 Class: Common Stock

FRED ALGER MANAGEMENT, LLC's Holding History (CIK: 0000003520)

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

Q1 2014

Shares 723,074 Value ($000) $25,691 Avg Close $22.15 Range $17.84 - $24.59

Q4 2013

Shares 2,022,832 Value ($000) $81,743 Avg Close $20.46 Range $17.72 - $23.32

Q3 2013

Shares 1,843,493 Value ($000) $59,453 Avg Close $17.12 Range $15.63 - $18.44

Q2 2013

Shares 1,772,133 Value ($000) $49,886 Avg Close $15.51 Range $14.03 - $16.52

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2014	723,074	$25,691	$22.15	$17.84 - $24.59
Q4 2013	2,022,832	$81,743	$20.46	$17.72 - $23.32
Q3 2013	1,843,493	$59,453	$17.12	$15.63 - $18.44
Q2 2013	1,772,133	$49,886	$15.51	$14.03 - $16.52