COGENT COMMUNICATIONS HLDGS

Ticker: CCOI CUSIP: 19239V302 Class: Common Stock

RATIONAL ADVISORS LLC's Holding History (CIK: 0001143565)

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

Q1 2019

Shares 52,937 Value ($000) $2,872 Avg Close $34.25 Range $30.46 - $38.29

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	52,937	$2,872	$34.25	$30.46 - $38.29