Essex Investment Management’s Paratek Pharmaceuticals, Inc. PRTK Stock Holding History

Essex Investment Management’s Portfolio PRTK Stock Details PRTK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2021 Q3	–	Sell	-178,850	Closed	-$1.22M	–	448
2021 Q2	$1.22M	Sell	178,850 -15,447	-8%	-$125K	0.14%	217
2021 Q1	$1.37M	Sell	194,297 -20,484	-10%	-$148K	0.17%	194
2020 Q4	$1.34M	Sell	214,781 -40,120	-16%	-$236K	0.17%	190
2020 Q3	$1.38M	Buy	254,901 +8,417	+3%	+$41.7K	0.2%	166
2020 Q2	$1.29M	Buy	+246,484	New	+$1.09M	0.21%	157
2018 Q1	–	Sell	-30,276	Closed	-$542K	–	384
2017 Q4	$542K	Sell	30,276 -32,358	-52%	-$675K	0.07%	267
2017 Q3	$1.57M	Buy	62,634 +24,267	+63%	+$565K	0.21%	161
2017 Q2	$925K	Sell	38,367 -13,059	-25%	-$289K	0.13%	204
2017 Q1	$990K	Buy	51,426 +6,939	+16%	+$109K	0.16%	189
2016 Q4	$685K	Buy	+44,487	New	+$578K	0.11%	213

Other funds holding PRTK

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

OFM

Omega Fund Management Boston, Massachusetts $163M AUM 107.06% 1-Year Est. Return

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

RSCM

Rock Springs Capital Management Baltimore, Maryland $1.7B AUM 93.03% 1-Year Est. Return

ACM

AIGH Capital Management Baltimore, Maryland $1.59B AUM 855.46% 1-Year Est. Return

Bruce & Co Chicago, Illinois $350M AUM 33.5% 1-Year Est. Return

GAI

General American Investors New York $1.69B AUM 40.94% 1-Year Est. Return

Abingworth London, United Kingdom $307M AUM 93.47% 1-Year Est. Return

GIM

Granahan Investment Management Waltham, Massachusetts $2.07B AUM 56.45% 1-Year Est. Return

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

Essex Investment Management's PRTK Position: Q3 2021 in Review

Essex Investment Management sold out of Paratek Pharmaceuticals, Inc. (PRTK) in Q3 2021, closing a stake of 178,850 shares — an estimated $1.22M sold.

Essex Investment Management first reported a position in PRTK in Q4 2016 and held it in 10 quarters. The position peaked at $1.57M in Q3 2017. 105 funds tracked by Wall St. Rank hold PRTK as of Q3 2021.

Essex Investment Management reported no remaining Paratek Pharmaceuticals, Inc. position as of Q3 2021 after selling out during the quarter.
Essex Investment Management sold 178,850 Paratek Pharmaceuticals, Inc. shares in Q3 2021, an estimated $1.22M.
Essex Investment Management first reported a position in Paratek Pharmaceuticals, Inc. in Q4 2016 and held it in 10 quarters.
Essex Investment Management's Paratek Pharmaceuticals, Inc. position peaked at $1.57M in Q3 2017.
105 funds tracked by Wall St. Rank held Paratek Pharmaceuticals, Inc. as of Q3 2021.

Based on Essex Investment Management's 13F filing for Q3 2021, filed 9 Nov 2021.