CASTLEARK MANAGEMENT LLC - PENUMBRA INC ownership

PENUMBRA INC's ticker is PEN and the CUSIP is 70975L107. A total of 202 filers reported holding PENUMBRA INC in Q3 2018. The put-call ratio across all filers is 0.74 and the average weighting 0.1%.

Quarter-by-quarter ownership
CASTLEARK MANAGEMENT LLC ownership history of PENUMBRA INC
ValueSharesWeighting
Q3 2023$1,141,331
-84.3%
4,718
-77.7%
0.06%
-82.4%
Q2 2023$7,269,988
+3.4%
21,130
-16.3%
0.33%
-4.6%
Q1 2023$7,031,349
+25.3%
25,2300.0%0.34%
+17.7%
Q4 2022$5,612,666
+34.9%
25,230
-2.2%
0.29%
+19.1%
Q1 2020$4,161,000
+16.3%
25,792
-0.4%
0.25%
+123.6%
Q2 2018$3,577,000
-30.1%
25,890
-61.6%
0.11%
-29.0%
Q3 2016$5,117,00067,3350.16%
Other shareholders
PENUMBRA INC shareholders Q3 2018
NameSharesValueWeighting ↓
PFM Health Sciences, LP 1,029,564$138,466,0004.09%
GREAT POINT PARTNERS LLC 300,000$40,347,0003.71%
CARRET ASSET MANAGEMENT, LLC 168,551$22,668,0003.60%
Partner Investment Management, L.P. 12,558$1,689,0002.89%
Redmile Group, LLC 297,972$40,074,0001.34%
Rock Springs Capital Management LP 242,500$32,614,0001.30%
Redwood Investments, LLC 90,147$12,124,0000.93%
Ardevora Asset Management LLP 242,700$32,641,0000.91%
NEXT CENTURY GROWTH INVESTORS LLC 39,134$5,263,0000.85%
Stephens Investment Management Group LLC 307,074$41,298,0000.83%
View complete list of PENUMBRA INC shareholders