RSCM
CBST

Rock Springs Capital Management’s CUBIST PHARMACEUTICALS INC CBST Stock Holding History

Rock Springs Capital Management’s Portfolio CBST Stock Details CBST Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2015
Q1 		– Sell
-87,500
Closed -$8.81M – 118
2014
Q4 		$8.81M Buy
87,500
+41,000
+88% +$3.19M 1.03% 35
2014
Q3 		$3.08M Buy
46,500
+7,500
+19% +$493K 0.48% 64
2014
Q2 		$2.72M Buy
39,000
+9,000
+30% +$612K 0.49% 67
2014
Q1 		$2.19M Buy
30,000
+12,500
+71% +$932K 0.51% 58
2013
Q4 		$1.21M Buy
+17,500
New +$1.13M 0.43% 56

Rock Springs Capital Management's CBST Position: Q1 2015 in Review

Rock Springs Capital Management sold out of CUBIST PHARMACEUTICALS INC (CBST) in Q1 2015, closing a stake of 87,500 shares — an estimated $8.81M sold.

Rock Springs Capital Management first reported a position in CBST in Q4 2013 and held it in 5 quarters. The position peaked at $8.81M in Q4 2014. 0 funds tracked by Wall St. Rank hold CBST as of Q1 2015.

  • Rock Springs Capital Management reported no remaining CUBIST PHARMACEUTICALS INC position as of Q1 2015 after selling out during the quarter.
  • Rock Springs Capital Management sold 87,500 CUBIST PHARMACEUTICALS INC shares in Q1 2015, an estimated $8.81M.
  • Rock Springs Capital Management first reported a position in CUBIST PHARMACEUTICALS INC in Q4 2013 and held it in 5 quarters.
  • Rock Springs Capital Management's CUBIST PHARMACEUTICALS INC position peaked at $8.81M in Q4 2014.
  • 0 funds tracked by Wall St. Rank held CUBIST PHARMACEUTICALS INC as of Q1 2015.

Based on Rock Springs Capital Management's 13F filing for Q1 2015, filed 15 May 2015.