ESSEX INVESTMENT MANAGEMENT CO LLC - PENUMBRA INC ownership

PENUMBRA INC's ticker is PEN and the CUSIP is 70975L107. A total of 203 filers reported holding PENUMBRA INC in Q2 2018. The put-call ratio across all filers is 1.61 and the average weighting 0.1%.

Quarter-by-quarter ownership
ESSEX INVESTMENT MANAGEMENT CO LLC ownership history of PENUMBRA INC
ValueSharesWeighting
Q1 2019$1,163,000
-40.5%
7,909
-50.5%
0.17%
+12.4%
Q4 2018$1,954,000
+98.2%
15,988
+142.7%
0.15%
+31.9%
Q3 2018$986,000
+8.4%
6,5870.0%0.12%
+1.8%
Q2 2018$910,0006,5870.11%
Other shareholders
PENUMBRA INC shareholders Q2 2018
NameSharesValueWeighting ↓
RTW INVESTMENTS, LP 698,371$132,411,0003.05%
OAK HARBOR WEALTH PARTNERS, LLC 37,379$7,087,0002.78%
CARRET ASSET MANAGEMENT, LLC 88,500$16,780,0002.50%
PFM Health Sciences, LP 360,030$68,262,0002.47%
Rock Springs Capital Management LP 476,000$90,250,0002.33%
PFM Health Sciences, LP 207,500$39,342,0001.42%
Affinity Asset Advisors, LLC 25,000$4,740,0001.32%
Redmile Group, LLC 178,792$33,899,0001.32%
Atika Capital Management LLC 76,000$14,409,0001.22%
Champlain Investment Partners, LLC 804,075$152,453,0001.04%
View complete list of PENUMBRA INC shareholders