RS INVESTMENT MANAGEMENT CO LLC

Holdings History for COGENT COMMUNICATIONS HOLDINGS, INC. - Common Stock (CCOI)

Symbol: CCOI on Nasdaq
Investment type: Equity / Common Stock

Shares, Excluding Options vs Price

Value, Excluding Options

Holdings date	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
30 Sep 2015		-0.27%	$0	0	-931,340	-100%	$26.51	Q3 2015
30 Jun 2015	0.27%	+0.08%	$31,517,000	931,340	+291,360	+46%	$33.84	Q2 2015
31 Mar 2015	0.2%	+0.02%	$22,610,000	639,980	+71,520	+13%	$35.33	Q1 2015
31 Dec 2014	0.18%	+0.03%	$20,118,000	568,460	+105,360	+23%	$35.39	Q4 2014
30 Sep 2014	0.14%	+0.04%	$15,565,000	463,100	+136,700	+42%	$33.61	Q3 2014
30 Jun 2014	0.09%	+0.09%	$11,277,000	326,400	+326,400	NEW	$34.55	Q2 2014

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.