ESSEX INVESTMENT MANAGEMENT CO LLC - PARATEK PHARMACEUTICALS INC ownership

PARATEK PHARMACEUTICALS INC's ticker is PRTK and the CUSIP is 699374302. A total of 134 filers reported holding PARATEK PHARMACEUTICALS INC in Q3 2017. The put-call ratio across all filers is 0.37 and the average weighting 0.5%.

Quarter-by-quarter ownership
ESSEX INVESTMENT MANAGEMENT CO LLC ownership history of PARATEK PHARMACEUTICALS INC
ValueSharesWeighting
Q2 2021$1,220,000
-11.1%
178,850
-8.0%
0.14%
-15.0%
Q1 2021$1,372,000
+2.0%
194,297
-9.5%
0.17%0.0%
Q4 2020$1,345,000
-2.5%
214,781
-15.7%
0.17%
-15.2%
Q3 2020$1,379,000
+7.1%
254,901
+3.4%
0.20%
-6.6%
Q2 2020$1,287,000
+137.5%
246,484
+714.1%
0.21%
+197.2%
Q4 2017$542,000
-65.5%
30,276
-51.7%
0.07%
-66.8%
Q3 2017$1,572,000
+69.9%
62,634
+63.2%
0.21%
+62.1%
Q2 2017$925,000
-6.6%
38,367
-25.4%
0.13%
-14.8%
Q1 2017$990,000
+44.5%
51,426
+15.6%
0.16%
+37.2%
Q4 2016$685,00044,4870.11%
Other shareholders
PARATEK PHARMACEUTICALS INC shareholders Q3 2017
NameSharesValueWeighting ↓
AIGH Capital Management LLC 2,339,107$10,502,0003.20%
Telemetry Investments, L.L.C. 262,279$1,178,0001.52%
Bruce & Co., Inc. 1,443,312$6,480,0001.30%
Omega Fund Management, LLC 1,971,241$8,851,0001.25%
Worth Venture Partners, LLC 556,832$2,500,0001.24%
Abingworth LLP 1,041,131$4,654,0001.13%
1492 Capital Management LLC 491,033$2,205,0001.09%
CM Management, LLC 300,000$1,347,0001.02%
Trellus Management Company, LLC 295,000$1,325,0000.88%
GENERAL AMERICAN INVESTORS CO INC 1,306,919$5,868,0000.46%
View complete list of PARATEK PHARMACEUTICALS INC shareholders