ENERGY RECOVERY INC

Institution	Shares	Value ($000)
ACK Asset Management LLC	677,251	$9,136
ISTHMUS PARTNERS, LLC	111,054	$1,498
EntryPoint Capital, LLC	29,024	$392
ArrowMark Colorado Holdings LLC	377,000	$5,086
CoreCommodity Management, LLC	25,151	$339
Legacy Capital Group California, Inc.	10,413	$140
Aristides Capital LLC	13,516	$182
TWO SIGMA SECURITIES, LLC	14,491	$195
XTX Topco Ltd	28,889	$390
Quantbot Technologies LP	20,658	$279
CAXTON ASSOCIATES LLP	18,752	$253
EVERGREEN CAPITAL MANAGEMENT LLC	17,449	$235
Quantinno Capital Management LP	46,642	$629
Connor, Clark & Lunn Investment Management Ltd.	34,405	$464
Ballentine Partners, LLC	10,215	$138
Premier Fund Managers Ltd	18,030	$0
Parallel Advisors, LLC	2,796	$38
Quarry LP	297	$4
SouthState Corp	407	$5
LOS ANGELES CAPITAL MANAGEMENT LLC	281	$5

Increased Positions (56)

Kopion Asset Management, LLC

Value ($000) $4,512 (-8.1%) Shares 334,469 (+5.1%)

GSA CAPITAL PARTNERS LLP

Value ($000) $1 (+134.1%) Shares 109,307 (+167.4%)

Y-Intercept (Hong Kong) Ltd

Value ($000) $1,536 (+178.0%) Shares 113,863 (+217.8%)

Campbell & CO Investment Adviser LLC

Value ($000) $1,101 (+46.4%) Shares 81,604 (+67.4%)

Amundi

Value ($000) $38,457 (+265.7%) Shares 2,851,691 (+323.6%)

Old West Investment Management, LLC

Value ($000) $674 (+0.2%) Shares 49,944 (+14.6%)

INCEPTIONR LLC

Value ($000) $318 (+13.5%) Shares 23,549 (+29.8%)

JACOBS LEVY EQUITY MANAGEMENT, INC

Value ($000) $5,757 (+5.1%) Shares 426,733 (+20.1%)

BlackRock, Inc.

Value ($000) $85,491 (-4.0%) Shares 6,337,391 (+9.7%)

Inspire Investing, LLC

Value ($000) $477 (+2.9%) Shares 35,339 (+17.6%)

STATE STREET CORP

Value ($000) $23,803 (+7.3%) Shares 1,764,522 (+22.6%)

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

Value ($000) $4,697 (+36.1%) Shares 348,187 (+55.5%)

Invesco Ltd.

Value ($000) $10,064 (+1.3%) Shares 746,036 (+15.8%)

AlphaQuest LLC

Value ($000) $325 (+11.3%) Shares 24,128 (+27.2%)

ROYCE & ASSOCIATES LP

Value ($000) $4,482 (-8.5%) Shares 332,247 (+4.6%)

Pathstone Holdings, LLC

Value ($000) $556 (+232.0%) Shares 41,191 (+279.5%)

Select Equity Group, L.P.

Value ($000) $10,436 (-9.9%) Shares 773,577 (+3.0%)

CITADEL ADVISORS LLC

Value ($000) $5,647 (+10.4%) Shares 418,587 (+26.1%)

RENAISSANCE TECHNOLOGIES LLC

Value ($000) $1,389 (+62.0%) Shares 102,985 (+85.2%)

VANGUARD GROUP INC

Value ($000) $51,969 (-10.4%) Shares 3,852,438 (+2.4%)

Institution	Prev Shares	Curr Shares	Change
Kopion Asset Management, LLC	318,287	334,469	+16,182 (+5.1%)
GSA CAPITAL PARTNERS LLP	40,876	109,307	+68,431 (+167.4%)
Y-Intercept (Hong Kong) Ltd	35,832	113,863	+78,031 (+217.8%)
Campbell & CO Investment Adviser LLC	48,753	81,604	+32,851 (+67.4%)
Amundi	673,131	2,851,691	+2,178,560 (+323.6%)
Old West Investment Management, LLC	43,598	49,944	+6,346 (+14.6%)
INCEPTIONR LLC	18,147	23,549	+5,402 (+29.8%)
JACOBS LEVY EQUITY MANAGEMENT, INC	355,295	426,733	+71,438 (+20.1%)
BlackRock, Inc.	5,776,383	6,337,391	+561,008 (+9.7%)
Inspire Investing, LLC	30,051	35,339	+5,288 (+17.6%)
STATE STREET CORP	1,439,242	1,764,522	+325,280 (+22.6%)
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	223,845	348,187	+124,342 (+55.5%)
Invesco Ltd.	644,064	746,036	+101,972 (+15.8%)
AlphaQuest LLC	18,966	24,128	+5,162 (+27.2%)
ROYCE & ASSOCIATES LP	317,645	332,247	+14,602 (+4.6%)
Pathstone Holdings, LLC	10,853	41,191	+30,338 (+279.5%)
Select Equity Group, L.P.	751,042	773,577	+22,535 (+3.0%)
CITADEL ADVISORS LLC	331,820	418,587	+86,767 (+26.1%)
RENAISSANCE TECHNOLOGIES LLC	55,600	102,985	+47,385 (+85.2%)
VANGUARD GROUP INC	3,762,742	3,852,438	+89,696 (+2.4%)

Decreased Positions (75)

BROWN CAPITAL MANAGEMENT LLC

Value ($000) $10,317 (-58.3%) Shares 764,793 (-52.3%)

Alpha Wave Global, LP

Value ($000) $3,576 (-56.1%) Shares 265,121 (-49.8%)

Montanaro Asset Management Ltd

Value ($000) $1,729 (-45.5%) Shares 128,160 (-37.7%)

AVENIR CORP

Value ($000) $13,080 (-17.3%) Shares 969,580 (-5.5%)

Redmond Asset Management, LLC

Value ($000) $3,053 (-13.9%) Shares 226,335 (-1.5%)

RICE HALL JAMES & ASSOCIATES, LLC

Value ($000) $1,646 (-28.5%) Shares 121,998 (-18.3%)

Sargent Investment Group, LLC

Value ($000) $418 (-37.9%) Shares 30,990 (-29.0%)

KBC Group NV

Value ($000) $1 (-94.0%) Shares 84,488 (-93.1%)

ESSEX INVESTMENT MANAGEMENT CO LLC

Value ($000) $1,822 (-14.3%) Shares 135,100 (-2.0%)

Engineers Gate Manager LP

Value ($000) $518 (-56.9%) Shares 38,412 (-50.8%)

D. E. Shaw & Co., Inc.

Value ($000) $851 (-84.1%) Shares 63,095 (-81.8%)

AMERIPRISE FINANCIAL INC

Value ($000) $61,560 (-19.6%) Shares 4,563,348 (-8.1%)

JUPITER ASSET MANAGEMENT LTD

Value ($000) $1,648 (-34.2%) Shares 122,129 (-24.8%)

PINNACLE ASSOCIATES LTD

Value ($000) $5,129 (-16.7%) Shares 380,230 (-4.8%)

LAZARD ASSET MANAGEMENT LLC

Value ($000) $588 (-73.9%) Shares 43,591 (-70.1%)

MARSHALL WACE, LLP

Value ($000) $1,476 (-60.0%) Shares 109,390 (-54.3%)

Candriam S.C.A.

Value ($000) $1,615 (-35.8%) Shares 119,714 (-26.6%)

Qube Research & Technologies Ltd

Value ($000) $5,203 (-32.4%) Shares 385,687 (-22.7%)

RAYMOND JAMES FINANCIAL INC

Value ($000) $1,371 (-70.0%) Shares 101,629 (-65.7%)

BNP PARIBAS ARBITRAGE, SA

Value ($000) $1,566 (-56.8%) Shares 116,077 (-50.7%)

Institution	Prev Shares	Curr Shares	Change
BROWN CAPITAL MANAGEMENT LLC	1,602,982	764,793	-838,189 (-52.3%)
Alpha Wave Global, LP	527,871	265,121	-262,750 (-49.8%)
Montanaro Asset Management Ltd	205,560	128,160	-77,400 (-37.7%)
AVENIR CORP	1,025,816	969,580	-56,236 (-5.5%)
Redmond Asset Management, LLC	229,898	226,335	-3,563 (-1.5%)
RICE HALL JAMES & ASSOCIATES, LLC	149,272	121,998	-27,274 (-18.3%)
Sargent Investment Group, LLC	43,640	30,990	-12,650 (-29.0%)
KBC Group NV	1,228,815	84,488	-1,144,327 (-93.1%)
ESSEX INVESTMENT MANAGEMENT CO LLC	137,886	135,100	-2,786 (-2.0%)
Engineers Gate Manager LP	78,007	38,412	-39,595 (-50.8%)
D. E. Shaw & Co., Inc.	346,801	63,095	-283,706 (-81.8%)
AMERIPRISE FINANCIAL INC	4,966,296	4,563,348	-402,948 (-8.1%)
JUPITER ASSET MANAGEMENT LTD	162,463	122,129	-40,334 (-24.8%)
PINNACLE ASSOCIATES LTD	399,336	380,230	-19,106 (-4.8%)
LAZARD ASSET MANAGEMENT LLC	145,947	43,591	-102,356 (-70.1%)
MARSHALL WACE, LLP	239,389	109,390	-129,999 (-54.3%)
Candriam S.C.A.	163,157	119,714	-43,443 (-26.6%)
Qube Research & Technologies Ltd	498,870	385,687	-113,183 (-22.7%)
RAYMOND JAMES FINANCIAL INC	296,353	101,629	-194,724 (-65.7%)
BNP PARIBAS ARBITRAGE, SA	235,313	116,077	-119,236 (-50.7%)

Exited Positions (22)

DARK FOREST CAPITAL MANAGEMENT LP

Value ($000) $1,707 Shares 110,704

SILVERCREST ASSET MANAGEMENT GROUP LLC

Value ($000) $7,415 Shares 480,858

Manchester Capital Management LLC

Value ($000) $456 Shares 29,574

AXQ CAPITAL, LP

Value ($000) $200 Shares 12,938

IQ EQ FUND MANAGEMENT (IRELAND) Ltd

Value ($000) $618 Shares 40,109

Polymer Capital Management (US) LLC

Value ($000) $371 Shares 24,058

FOX RUN MANAGEMENT, L.L.C.

Value ($000) $222 Shares 14,384

Trexquant Investment LP

Value ($000) $1,683 Shares 109,149

Petrus Trust Company, LTA

Value ($000) $180 Shares 11,643

Cornerstone Investment Partners, LLC

Value ($000) $170 Shares 11,054

MACKENZIE FINANCIAL CORP

Value ($000) $1,808 Shares 117,228

STANCE CAPITAL LLC

Value ($000) $24 Shares 1,539

VOLORIDGE INVESTMENT MANAGEMENT, LLC

Value ($000) $547 Shares 35,482

Quadrature Capital Ltd

Value ($000) $166 Shares 10,747

HRT FINANCIAL LP

Value ($000) $3 Shares 177,801

State of Tennessee, Department of Treasury

Value ($000) $212 Shares 13,770

BALYASNY ASSET MANAGEMENT L.P.

Value ($000) $211 Shares 13,693

Man Group plc

Value ($000) $162 Shares 10,511

Versant Capital Management, Inc

Value ($000) $4 Shares 276

Advisory Services Network, LLC

Value ($000) $2 Shares 150

Institution	Prev Shares	Prev Value ($000)
DARK FOREST CAPITAL MANAGEMENT LP	110,704	$1,707
SILVERCREST ASSET MANAGEMENT GROUP LLC	480,858	$7,415
Manchester Capital Management LLC	29,574	$456
AXQ CAPITAL, LP	12,938	$200
IQ EQ FUND MANAGEMENT (IRELAND) Ltd	40,109	$618
Polymer Capital Management (US) LLC	24,058	$371
FOX RUN MANAGEMENT, L.L.C.	14,384	$222
Trexquant Investment LP	109,149	$1,683
Petrus Trust Company, LTA	11,643	$180
Cornerstone Investment Partners, LLC	11,054	$170
MACKENZIE FINANCIAL CORP	117,228	$1,808
STANCE CAPITAL LLC	1,539	$24
VOLORIDGE INVESTMENT MANAGEMENT, LLC	35,482	$547
Quadrature Capital Ltd	10,747	$166
HRT FINANCIAL LP	177,801	$3
State of Tennessee, Department of Treasury	13,770	$212
BALYASNY ASSET MANAGEMENT L.P.	13,693	$211
Man Group plc	10,511	$162
Versant Capital Management, Inc	276	$4
Advisory Services Network, LLC	150	$2