William Blair Investment Management’s Gulfport Energy Corp. GPOR Stock Holding History

William Blair Investment Management’s Portfolio GPOR Stock Details GPOR Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2018 Q1	–	Sell	-208,342	Closed	-$2.66M	–	466
2017 Q4	$2.66M	Sell	208,342 -16,466	-7%	-$219K	0.01%	373
2017 Q3	$3.22M	Buy	224,808 +14,198	+7%	+$184K	0.01%	376
2017 Q2	$3.11M	Buy	210,610 +27,860	+15%	+$426K	0.01%	385
2017 Q1	$3.14M	Sell	182,750 -5,006	-3%	-$95.9K	0.01%	374
2016 Q4	$4.06M	Sell	187,756 -6,015	-3%	-$154K	0.02%	354
2016 Q3	$5.47M	Buy	193,771 +54,469	+39%	+$1.55M	0.02%	348
2016 Q2	$4.36M	Buy	139,302 +9,033	+7%	+$273K	0.02%	361
2016 Q1	$3.69M	Buy	130,269 +4,007	+3%	+$106K	0.01%	369
2015 Q4	$3.1M	Sell	126,262 -5,538	-4%	-$156K	0.01%	377
2015 Q3	$3.91M	Buy	+131,800	New	+$4.54M	0.01%	817

Other funds holding GPOR

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

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

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

FVP

Firefly Value Partners Newtown, Pennsylvania $59.9M AUM 5.97% 1-Year Est. Return

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Schroder Investment Management Group London, United Kingdom $122B AUM 29.27% 1-Year Est. Return

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

RCMNY

Rubric Capital Management (New York) New York $9.44B AUM 68.42% 1-Year Est. Return

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

William Blair Investment Management's GPOR Position: Q1 2018 in Review

William Blair Investment Management sold out of Gulfport Energy Corp. (GPOR) in Q1 2018, closing a stake of 208,342 shares — an estimated $2.66M sold.

William Blair Investment Management first reported a position in GPOR in Q3 2015 and held it in 10 quarters. The position peaked at $5.47M in Q3 2016. 265 funds tracked by Wall St. Rank hold GPOR as of Q1 2018.

William Blair Investment Management reported no remaining Gulfport Energy Corp. position as of Q1 2018 after selling out during the quarter.
William Blair Investment Management sold 208,342 Gulfport Energy Corp. shares in Q1 2018, an estimated $2.66M.
William Blair Investment Management first reported a position in Gulfport Energy Corp. in Q3 2015 and held it in 10 quarters.
William Blair Investment Management's Gulfport Energy Corp. position peaked at $5.47M in Q3 2016.
265 funds tracked by Wall St. Rank held Gulfport Energy Corp. as of Q1 2018.

Based on William Blair Investment Management's 13F filing for Q1 2018, filed 14 May 2018.