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Equibles

D. E. Shaw & Co., Inc.

Position in ERII — Energy Recovery, Inc.

CIK 1009207 New York, NY
Back to ERII Full portfolio

Position in ERII

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$1,972,737
+$1,832,764 QoQ
Shares Held
218,707
+1473.4% QoQ
Ownership
0.428%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#39
of 197 holders
Holding Since
Mar 2021
18 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ERII Over Time

Shares Held

Position Value (USD)

Position in Pollution & Treatment Controls

Industrials · as of Jun 30, 2026

D. E. Shaw & Co., Inc. holds $3,127,936 across 3 Pollution & Treatment Controls names. ERII ranks #1 (63.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 ERII
Energy Recovery, Inc.
This page 		218,707 $1,972,737
2 ARQ
Arq, Inc.
 358,479 $914,121
3 ZWS
Zurn Elkay Water Solutions Corp
 4,771 $241,078

All Filings in ERII

Export CSV
18 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,972,737 218,707
2026-03-31 $139,973 13,900
2025-12-31 $851,151 63,095
2025-09-30 $5,347,670 346,801
2025-06-30 $4,775,783 373,692
2025-03-31 $4,173,332 262,639
2024-12-31 $5,577,444 379,418
2024-09-30 $8,025,014 461,473
2024-06-30 $8,884,032 668,475
2024-03-31 $7,589,337 480,642
2023-12-31 $2,622,941 139,222
2023-09-30 $3,260,167 153,709
2023-06-30 $4,505,567 161,201
2023-03-31 $2,624,564 113,864
2022-12-31 $1,640,962 80,086
2022-09-30 $780,466 35,900
2022-06-30 $306,836 15,800
2021-03-31 $597,737 32,592