Columbia Wanger Asset Management’s iRhythm Holdings IRTC Stock Holding History

Columbia Wanger Asset Management’s Portfolio IRTC Stock Details IRTC Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2017 Q4	$45.3M	Sell	808,522 -331,553	-29%	-$17.3M	0.68%	46
2017 Q3	$59.1M	Sell	1,140,075 -19,192	-2%	-$869K	0.87%	29
2017 Q2	$49.3M	Buy	1,159,267 +570,120	+97%	+$20.8M	0.7%	52
2017 Q1	$22.2M	Buy	589,147 +35,300	+6%	+$1.21M	0.31%	139
2016 Q4	$16.6M	Buy	+553,847	New	+$14.9M	0.23%	154

Other funds holding IRTC

Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Franklin Resources San Mateo, California $462B AUM 39.16% 1-Year Est. Return

AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return

Redmile Group San Francisco, California $1.49B AUM 208.7% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return

TCM

TimesSquare Capital Management New York $6.8B AUM 45.85% 1-Year Est. Return

Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return

Columbia Wanger Asset Management's IRTC Position: Q4 2017 in Review

Columbia Wanger Asset Management reduced its iRhythm Holdings (IRTC) stake by 29% in Q4 2017, selling an estimated $17.3M and leaving 808,522 shares worth $45.3M. The position accounts for 0.68% of the portfolio, ranked #46.

Columbia Wanger Asset Management first reported a position in IRTC in Q4 2016 and has held it in 5 quarters since. The position peaked at $59.1M in Q3 2017. 118 funds tracked by Wall St. Rank hold IRTC as of Q4 2017.

Columbia Wanger Asset Management held 808,522 shares of iRhythm Holdings worth $45.3M as of Q4 2017.
Columbia Wanger Asset Management sold 331,553 iRhythm Holdings shares in Q4 2017, an estimated $17.3M.
iRhythm Holdings made up 0.68% of Columbia Wanger Asset Management's portfolio in Q4 2017, its #46 holding.
Columbia Wanger Asset Management first reported a position in iRhythm Holdings in Q4 2016 and has held it in 5 quarters since.
Columbia Wanger Asset Management's iRhythm Holdings position peaked at $59.1M in Q3 2017.
118 funds tracked by Wall St. Rank held iRhythm Holdings as of Q4 2017.

Based on Columbia Wanger Asset Management's 13F filing for Q4 2017, filed 13 Feb 2018.