Jim Simons Energy Recovery, Inc. Transaction History

Renaissance Technologies LLC

$70.6 Billion
Q3 2025

A detailed history of Jim Simons (Renaissance Technologies LLC) transactions in Energy Recovery, Inc. stock. As of the latest transaction made, Renaissance Technologies LLC holds 55,600 shares of ERII stock, worth $808,980. This represents 0.0% of its overall portfolio holdings.

Number of Shares

55,600

Previous 141,100 60.6%

Holding current value

$808,980

Previous $1.8 Million 52.47%

% of portfolio

0.0%

Previous 0.0%

20 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 13, 2025	SELL	$12.72 - $15.42 $1.09 Million - $1.32 Million	-85,500 Reduced 60.6%	55,600 $857,000
Q2 2025 Aug 13, 2025	SELL	$11.37 - $15.97 $1.14 Million - $1.6 Million	-100,400 Reduced 41.57%	141,100 $1.8 Million
Q1 2025 May 14, 2025	BUY	$14.06 - $16.83 $718,466 - $860,012	51,100 Added 26.84%	241,500 $3.84 Million
Q4 2024 Feb 13, 2025	BUY	$14.66 - $19.93 $2.79 Million - $3.79 Million	190,400 New	190,400 $2.8 Million
Q1 2024 May 13, 2024	BUY	$14.04 - $18.88 $880,308 - $1.18 Million	62,700 Added 63.14%	162,000 $2.56 Million

Q4 2023 Feb 13, 2024	BUY	$14.16 - $20.84 $1.41 Million - $2.07 Million	99,300 New	99,300 $1.87 Million
Q3 2022 Nov 14, 2022	SELL	$19.04 - $26.02 $765,408 - $1.05 Million	-40,200 Reduced 44.82%	49,500 $1.08 Million
Q2 2022 Aug 12, 2022	SELL	$17.16 - $21.57 $845,988 - $1.06 Million	-49,300 Reduced 35.47%	89,700 $1.74 Million
Q1 2022 May 13, 2022	BUY	$18.4 - $21.78 $2.56 Million - $3.03 Million	139,000 New	139,000 $2.8 Million
Q4 2021 Feb 11, 2022	SELL	$18.85 - $24.18 $473,135 - $606,918	-25,100 Closed	0 $0
Q3 2021 Nov 12, 2021	BUY	$18.59 - $23.03 $466,609 - $578,053	25,100 New	25,100 $478,000
Q2 2021 Aug 13, 2021	SELL	$16.76 - $22.78 $258,104 - $350,812	-15,400 Closed	0 $0
Q1 2021 May 13, 2021	BUY	$13.58 - $19.42 $209,132 - $299,068	15,400 New	15,400 $282,000
Q3 2020 Nov 13, 2020	SELL	$6.85 - $8.96 $230,845 - $301,952	-33,700 Closed	0 $0
Q2 2020 Aug 13, 2020	SELL	$6.94 - $9.05 $238,736 - $311,320	-34,400 Reduced 50.51%	33,700 $256,000
Q1 2020 May 14, 2020	SELL	$6.5 - $11.02 $53,300 - $90,364	-8,200 Reduced 10.75%	68,100 $507,000
Q4 2019 Feb 13, 2020	SELL	$8.46 - $9.99 $193,734 - $228,771	-22,900 Reduced 23.08%	76,300 $747,000
Q3 2019 Nov 13, 2019	BUY	$8.73 - $11.73 $866,016 - $1.16 Million	99,200 New	99,200 $919,000
Q2 2019 Aug 12, 2019	SELL	$8.79 - $11.02 $358,631 - $449,616	-40,800 Closed	0 $0
Q1 2019 May 14, 2019	BUY	$6.77 - $9.1 $276,216 - $371,280	40,800 New	40,800 $356,000

Others Institutions Holding ERII

# of Institutions

205

Shares Held

44M

Call Options Held

95.7K

Put Options Held

61.3K

View Full List

About Energy Recovery, Inc.

Ticker ERII
Exchange NASDAQ
Sector Industrials
Industry Pollution & Treatment Controls
Shares Outstandng 55,787,100
Market Cap $812M
Description
Energy Recovery, Inc., together with its subsidiaries, designs, manufactures, and sells various solutions for the seawater reverse osmosis desalination and industrial wastewater treatment industries worldwide. The company operates through Water and Emerging Technologies segments. It offers a suite of products, including energy recovery devices, ...

More about ERII

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