Tamarack Capital Management’s NxStage Medical Inc. NXTM Stock Holding History

Tamarack Capital Management’s Portfolio NXTM Stock Details NXTM Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2015 Q4	–	Sell	-2,000,000	Closed	-$31.5M	–	29
2015 Q3	$31.5M	Buy	2,000,000 +325,000	+19%	+$5.21M	3.75%	10
2015 Q2	$23.9M	Buy	1,675,000 +375,000	+29%	+$6.35M	2.75%	13
2015 Q1	$22.5M	Buy	1,300,000 +200,000	+18%	+$3.53M	2.96%	11
2014 Q4	$19.7M	Hold	1,100,000	–	–	2.99%	11
2014 Q3	$14.4M	Buy	1,100,000 +50,000	+5%	+$673K	3.2%	10
2014 Q2	$14.2M	Sell	1,050,000 -150,000	-13%	-$1.96M	2.9%	10
2014 Q1	$15.3M	Buy	1,200,000 +318,000	+36%	+$4.15M	3.82%	12
2013 Q4	$8.82M	Buy	882,000 +857,000	+3,428%	+$9.73M	2.09%	18
2013 Q3	$329K	Buy	+25,000	New	+$328K	0.09%	32

Other funds holding NXTM

GGHC

Gilder Gagnon Howe & Co New York $8.34B AUM 46.58% 1-Year Est. Return

Deerfield Management New York $8.48B AUM 99.04% 1-Year Est. Return

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

RIM

RS Investment Management San Francisco, California $9.73B AUM 3.24% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

OIM

Oracle Investment Management Greenwich, Connecticut $168M AUM 42.86% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

CAM

Cortina Asset Management Milwaukee, Wisconsin $1.62B AUM 15.44% 1-Year Est. Return

Tamarack Advisers Carlsbad, California $2.12M AUM 58.09% 1-Year Est. Return

BFA

BlackRock Fund Advisors San Francisco, California $542B AUM 18.13% 1-Year Est. Return

Tamarack Capital Management's NXTM Position: Q4 2015 in Review

Tamarack Capital Management sold out of NxStage Medical Inc. (NXTM) in Q4 2015, closing a stake of 2,000,000 shares — an estimated $31.5M sold.

Tamarack Capital Management first reported a position in NXTM in Q3 2013 and held it in 9 quarters. The position peaked at $31.5M in Q3 2015. 140 funds tracked by Wall St. Rank hold NXTM as of Q4 2015.

Tamarack Capital Management reported no remaining NxStage Medical Inc. position as of Q4 2015 after selling out during the quarter.
Tamarack Capital Management sold 2,000,000 NxStage Medical Inc. shares in Q4 2015, an estimated $31.5M.
Tamarack Capital Management first reported a position in NxStage Medical Inc. in Q3 2013 and held it in 9 quarters.
Tamarack Capital Management's NxStage Medical Inc. position peaked at $31.5M in Q3 2015.
140 funds tracked by Wall St. Rank held NxStage Medical Inc. as of Q4 2015.

Based on Tamarack Capital Management's 13F filing for Q4 2015.