Impax Asset Management 13F-HR Quarterly holdings report by institutional manager

The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE

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COLUMN 1	COLUMN 2	COLUMN 3	COLUMN 4	COLUMN 5			COLUMN 6	COLUMN 7	COLUMN 8
			VALUE	SHRS OR	SH/	PUT/	INVESTMENT	OTHER	VOTING AUTHORITY
NAME OF ISSUER	TITLE OF CLASS	CUSIP	(x$1000)	PRN AMT	PRN	CALL	DISCRETION	MANAGER	SOLE	SHARED	NONE
3M Co.	COM	88579Y101	19,045	114,294	SH		SOLE		114,294	0	0
ACI Worldwide, Inc.	COM	004498101	9,464	455,226	SH		SOLE		455,226	0	0
ARRIS International PLC	SHS	G0551A103	12,338	538,289	SH		SOLE		538,289	0	0
AT&T, Inc.	COM	00206R102	33,115	845,418	SH		DFND	1	845,418	0	0
AT&T, Inc.	Call Option	00206R902	15,668	400,000	SH	Call	SOLE		400,000	0	0
Abbott Laboratories	COM	002824100	5,716	136,654	SH		DFND	1	136,654	0	0
Accenture PLC, Class A	SHS CLASS A	G1151C101	373	3,230	SH		SOLE	1	3,230	0	0
Aetna, Inc.	COM	00817Y108	1,581	14,071	SH		SOLE	1	14,071	0	0
Agilent Technologies, Inc.	COM	00846U101	2,722	68,296	SH		SOLE		68,296	0	0
Alleghany Corp.	COM	017175100	20,230	40,770	SH		SOLE		40,770	0	0
Alphabet, Inc., Class A	CAP STK CL A	02079K305	33,051	43,323	SH		DFND	1	43,323	0	0
Alphabet, Inc., Class C	CAP STK CL C	02079K107	29,590	39,721	SH		DFND	1	39,721	0	0
Amazon.com, Inc.	COM	023135106	18,458	31,093	SH		SOLE		31,093	0	0
Amdocs, Ltd.	SHS	G02602103	5,146	85,174	SH		SOLE		85,174	0	0
American Express Co.	COM	025816109	2,154	35,085	SH		SOLE		35,085	0	0
American Tower Corp., REIT	COM	03027X100	37,775	369,005	SH		DFND	1	369,005	0	0
American Water Works Co., Inc.	COM	030420103	3,531	51,224	SH		DFND	1	51,224	0	0
Apple, Inc.	COM	037833100	54,579	500,771	SH		SOLE		500,771	0	0
Aramark	COM	03852U106	2,484	75,000	SH		SOLE		75,000	0	0
Axiall Corp.	COM	05463D100	8,322	381,036	SH		SOLE		381,036	0	0
Bank of America Corp.	COM	060505104	804	59,440	SH		SOLE	1	59,440	0	0
Bank of New York Mellon Corp., The	COM	064058100	22,918	622,255	SH		SOLE		622,255	0	0
Becton Dickinson & Co.	COM	075887109	25,382	167,187	SH		DFND	1	167,187	0	0
Beneficial Bancorp, Inc.	COM	08171T102	10,396	759,399	SH		SOLE		759,399	0	0
Berkshire Hathaway, Inc., Class B	CL B NEW	084670702	941	6,632	SH		SOLE	1	6,632	0	0
Berkshire Hills Bancorp, Inc.	COM	084680107	7,066	262,759	SH		SOLE		262,759	0	0
Biogen, Inc.	COM	09062X103	1,905	7,319	SH		DFND	1	7,319	0	0
BlackRock, Inc.	COM	09247X101	5,136	15,081	SH		SOLE		15,081	0	0
BorgWarner, Inc.	COM	099724106	1,779	46,327	SH		SOLE		46,327	0	0
Bristol-Myers Squibb Co.	COM	110122108	3,559	55,708	SH		DFND	1	55,708	0	0
Brookdale Senior Living, Inc.	COM	112463104	15,178	955,814	SH		SOLE		955,814	0	0
CBRE Group, Inc., Class A	CL A	12504L109	1,727	59,938	SH		SOLE		59,938	0	0
CVS Health Corp.	COM	126650100	19,768	190,567	SH		DFND	1	190,567	0	0
Cabela's, Inc.	COM	126804301	22,043	452,720	SH		SOLE		452,720	0	0
Capitol Federal Financial, Inc.	COM	14057j101	25,362	1,912,685	SH		SOLE		1,912,685	0	0
Carter's, Inc.	COM	146229109	14,332	136,003	SH		SOLE		136,003	0	0
Celgene Corp.	COM	151020104	21,147	211,281	SH		SOLE		211,281	0	0
Charles Schwab Corp., The	COM	808513105	15,150	540,703	SH		SOLE		540,703	0	0
Chubb, Ltd.	COM	H1467J104	29,340	246,244	SH		SOLE		246,244	0	0
Cigna Corp.	COM	125509109	211	1,540	SH		SOLE	1	1,540	0	0
Cisco Systems, Inc.	COM	17275R102	8,829	310,125	SH		DFND	1	310,125	0	0
Citigroup, Inc.	COM	172967424	16,314	390,750	SH		SOLE		390,750	0	0
Citizens Financial Group, Inc.	Com	174610105	3,352	160,000	SH		SOLE		160,000	0	0
Citrix Systems, Inc.	COM	177376100	1,572	20,000	SH		SOLE		20,000	0	0
Coca-Cola Co., The	COM	191216100	1,064	22,935	SH		SOLE	1	22,935	0	0
Coca-Cola Enterprises, Inc.	COM	19122T109	1,567	30,878	SH		SOLE	1	30,878	0	0
Cognizant Technology Solutions, Class A	CL A	192446102	24,061	383,748	SH		SOLE		383,748	0	0
Colgate-Palmolive Co.	COM	194162103	334	4,732	SH		SOLE	1	4,732	0	0
ConAgra Foods, Inc.	COM	205887102	3,123	70,000	SH		SOLE		70,000	0	0
Concho Resources, Inc.	COM	20605P101	1,010	10,000	SH		SOLE		10,000	0	0
ConocoPhillips	COM	20825C104	259	6,428	SH		DFND	1	6,428	0	0
Core Laboratories NV	COM	N22717107	2,392	21,281	SH		DFND	1	21,281	0	0
Cummins, Inc.	COM	231021106	1,680	15,278	SH		DFND	1	15,278	0	0
Dominion Resources, Inc.	COM	25746U109	252	3,348	SH		SOLE	1	3,348	0	0
Duke Energy Corp.	COM	26441C204	307	3,803	SH		SOLE	1	3,803	0	0
EMC Corp.	COM	268648102	2,869	107,667	SH		SOLE		107,667	0	0
EMCOR Group, Inc.	COM	29084Q100	12,505	257,300	SH		SOLE		257,300	0	0
EOG Resources Inc	COM	26875P101	6,532	90,000	SH		SOLE		90,000	0	0
EQT Corp.	COM	26884L109	2,892	42,991	SH		SOLE		42,991	0	0
Eaton Corp PLC	SHS	G29183103	2,382	38,074	SH		SOLE		38,074	0	0
Ecolab, Inc.	COM	278865100	11,795	105,766	SH		DFND	1	105,766	0	0
Eli Lilly & Co.	COM	532457108	432	5,995	SH		SOLE	1	5,995	0	0
Equity Residential, REIT	SH BEN INT	29476L107	3,387	45,136	SH		SOLE		45,136	0	0
Estee Lauder Cos, Inc., Class A	CL A	518439104	29,028	307,798	SH		DFND	1	307,798	0	0
Eversource Energy	COM	30040W108	17,295	296,445	SH		SOLE		296,445	0	0
ExlService Holdings, Inc.	COM	302081104	11,249	217,166	SH		SOLE		217,166	0	0
Expeditors Int. of Washington, Inc.	COM	302130109	8,110	166,150	SH		SOLE		166,150	0	0
Express Scripts Holding Co.	COM	30219G108	1,213	17,666	SH		SOLE		17,666	0	0
FBR & Co.	COM	30247C400	4,502	248,847	SH		SOLE		248,847	0	0
Facebook, Inc., Class A	CL A	30303M102	19,231	168,545	SH		DFND	1	168,545	0	0
First Republic Bank	COM	33616C100	6,716	100,786	SH		DFND	1	100,786	0	0
Fiserv, Inc.	COM	337738108	2,052	20,000	SH		SOLE		20,000	0	0
Fox Chase Bancorp, Inc.	COM	35137T108	10,947	566,599	SH		SOLE		566,599	0	0
Frontier Communications Corp.	COM	35906A108	200	35,752	SH		SOLE	1	35,752	0	0
General Mills, Inc.	COM	370334104	22,008	347,401	SH		DFND	1	347,401	0	0
Genpact, Ltd.	SHS	G3922B107	14,274	524,959	SH		SOLE		524,959	0	0
Gentex Corp.	COM	371901109	8,792	560,333	SH		SOLE		560,333	0	0
Genuine Parts Co	COM	372460105	1,987	20,000	SH		SOLE		20,000	0	0
Gilead Sciences, Inc.	COM	375558103	11,736	127,758	SH		DFND	1	127,758	0	0
Goldman Sachs Group, Inc., The	COM	38141G104	12,192	77,666	SH		SOLE		77,666	0	0
Hercules Technology Growth Capital, Inc.	COM	427096508	1,033	86,000	SH		SOLE		86,000	0	0
Hess Corp.	COM	42809H107	9,477	180,000	SH		SOLE		180,000	0	0
Hologic, Inc.	COM	436440101	4,399	127,500	SH		DFND	1	127,500	0	0
Home Depot, Inc., The	COM	437076102	28,255	211,756	SH		DFND	1	211,756	0	0
HomeTrust Bancshares, Inc.	COM	437872104	11,739	640,447	SH		SOLE		640,447	0	0
IBM	COM	459200101	749	4,943	SH		DFND	1	4,943	0	0
ICF International, Inc.	COM	44925C103	11,080	322,370	SH		SOLE		322,370	0	0
ICON PLC	SHS	G4705A100	4,360	58,051	SH		SOLE		58,051	0	0
Independent Bank Corp.	COM	453836108	11,611	252,628	SH		SOLE		252,628	0	0
Ingersoll-Rand PLC	SHS	G47791101	15,965	257,460	SH		DFND	1	257,460	0	0
Ingram Micro, Inc., Class A	CL A	457153104	22,224	618,869	SH		SOLE		618,869	0	0
Integra LifeSciences Holdings Corp.	COM	457985208	7,090	105,261	SH		SOLE		105,261	0	0
Intuit, Inc.	COM	461202103	2,598	24,975	SH		DFND	1	24,975	0	0
Investors Bancorp, Inc.	COM	46146L101	24,548	2,108,972	SH		SOLE		2,108,972	0	0
Jamba, Inc.	COM	47023A309	5,969	482,927	SH		SOLE		482,927	0	0
Johnson & Johnson	COM	478160104	33,138	306,264	SH		DFND	1	306,264	0	0
KLX, Inc.	COM	482539103	5,326	165,710	SH		SOLE		165,710	0	0
Kaiser Aluminum Corp.	COM PAR $0.01	483007704	7,081	83,765	SH		SOLE		83,765	0	0
Kearny Financial Corp/MD	COM	48716p108	12,022	973,434	SH		SOLE		973,434	0	0
Kellogg Co.	COM	487836108	1,583	20,681	SH		SOLE	1	20,681	0	0
KeyCorp	COM	493267108	1,027	92,984	SH		SOLE	1	92,984	0	0
Kimberly-Clark Corp.	COM	494368103	280	2,084	SH		SOLE	1	2,084	0	0
Knoll, Inc.	COM	498904200	10,821	499,793	SH		SOLE		499,793	0	0
Korn/Ferry International	COM	500643200	5,422	191,656	SH		SOLE		191,656	0	0
Kroger Co., The	COM	501044101	220	5,756	SH		SOLE	1	5,756	0	0
Laboratory Corp of America Holdings	COM	50540R409	5,539	47,293	SH		SOLE		47,293	0	0
Laclede Group, Inc., The	COM	505597104	13,800	203,694	SH		SOLE		203,694	0	0
Landstar System, Inc.	COM	515098101	1,957	30,293	SH		SOLE		30,293	0	0
Legg Mason, Inc.	COM	524901105	13,981	403,145	SH		SOLE		403,145	0	0
Ligand Pharmaceuticals, Inc.	COM	53220K504	3,726	34,790	SH		SOLE		34,790	0	0
Lowe's Cos., Inc.	COM	548661107	4,807	63,464	SH		SOLE		63,464	0	0
Lydall, Inc.	COM	550819106	3,991	122,725	SH		SOLE		122,725	0	0
LyondellBasell Industries NV, Class A	SHS - A -	N53745100	13,243	154,741	SH		SOLE		154,741	0	0
MRC Global, Inc.	COM	55345K103	11,169	850,000	SH		SOLE		850,000	0	0
Macy's, Inc.	COM	55616P104	3,213	72,885	SH		DFND	1	72,885	0	0
Marriott International, Inc., Class A	CL A	571903202	2,245	31,537	SH		DFND	1	31,537	0	0
Masco Corp.	COM	574599106	3,331	105,929	SH		SOLE		105,929	0	0
MasterCard, Inc., Class A	CL A	57636Q104	3,865	40,896	SH		DFND	1	40,896	0	0
McDonald's Corp.	COM	580135101	6,317	50,263	SH		SOLE		50,263	0	0
McKesson Corp.	COM	58155q103	214	1,362	SH		SOLE	1	1,362	0	0
Medtronic PLC	SHS	G5960L103	655	8,732	SH		SOLE	1	8,732	0	0
Merck & Co., Inc.	COM	58933Y105	18,828	355,856	SH		SOLE		355,856	0	0
Meridian Bancorp, Inc.	COM	58958U103	13,802	991,528	SH		SOLE		991,528	0	0
MetLife, Inc.	COM	59156R108	226	5,147	SH		SOLE	1	5,147	0	0
Metaldyne Performance Group, Inc.	COM	59116R107	5,484	326,255	SH		SOLE		326,255	0	0
Michael Kors Holdings, Ltd.	SHS	G60754101	662	11,621	SH		DFND	1	11,621	0	0
Microsoft Corp.	COM	594918104	50,454	913,520	SH		DFND	1	913,520	0	0
Mohawk Industries, Inc.	COM	608190104	1,384	7,250	SH		SOLE		7,250	0	0
Mondelez International, Inc., Class A	CL A	609207105	392	9,759	SH		SOLE	1	9,759	0	0
Morgan Stanley	COM	617446448	1,663	66,500	SH		SOLE		66,500	0	0
Mylan NV	SHS EURO	N59465109	2,447	52,794	SH		SOLE		52,794	0	0
NIKE, Inc., Class B	CL B	654106103	14,802	240,794	SH		DFND	1	240,794	0	0
NN, Inc.	COM	629337106	4,458	325,877	SH		SOLE		325,877	0	0
NXP Semiconductors NV	COM	N6596X109	1,581	19,500	SH		SOLE		19,500	0	0
Natus Medical, Inc.	COM	639050103	14,369	373,900	SH		SOLE		373,900	0	0
Netflix, Inc.	COM	64110L106	225	2,201	SH		SOLE	1	2,201	0	0
Newell Rubbermaid, Inc.	COM	651229106	8,604	194,274	SH		SOLE		194,274	0	0
Newmont Mining Corp.	COM	651639106	5,882	221,299	SH		DFND	1	221,299	0	0
Nucor Corp.	COM	670346105	3,165	66,905	SH		SOLE		66,905	0	0
ONE Gas, Inc.	COM	68235P108	4,929	80,671	SH		SOLE		80,671	0	0
Occidental Petroleum Corp.	COM	674599105	23,617	345,120	SH		SOLE		345,120	0	0
Oracle Corp.	COM	68389x105	1,829	44,713	SH		SOLE		44,713	0	0
Oshkosh Corp.	COM	688239201	14,219	347,913	SH		SOLE		347,913	0	0
PNC Financial Services Group, Inc.	COM	693475105	5,502	65,056	SH		DFND	1	65,056	0	0
Parsley Energy, Inc., Class A	CL A	701877102	2,260	100,000	SH		SOLE		100,000	0	0
PayPal Holdings Inc	COM	70450Y103	2,965	76,821	SH		SOLE		76,821	0	0
PepsiCo, Inc.	COM	713448108	29,954	292,290	SH		DFND	1	292,290	0	0
Performance Food Group Co.	COM	71377A103	6,757	289,368	SH		SOLE		289,368	0	0
Phillips 66	COM	718546104	249	2,877	SH		SOLE	1	2,877	0	0
Physicians Realty Trust, REIT	COM	71943U104	9,069	488,117	SH		SOLE		488,117	0	0
Pioneer Natural Resources Co.	COM	723787107	23,805	169,145	SH		SOLE		169,145	0	0
Planet Fitness, Inc., Class A	CL A	72703H101	8,421	518,530	SH		SOLE		518,530	0	0
Praxair, Inc.	COM	74005P104	2,999	26,205	SH		SOLE		26,205	0	0
Procter & Gamble Co., The	COM	742718109	24,890	302,398	SH		DFND	1	302,398	0	0
Progress Software Corp.	COM	743312100	7,704	319,395	SH		SOLE		319,395	0	0
Prologis, Inc., REIT	COM	74340W103	3,755	85,000	SH		SOLE		85,000	0	0
QUALCOMM, Inc.	COM	747525103	21,311	416,718	SH		SOLE		416,718	0	0
Quanta Services, Inc.	COM	74762E102	2,260	100,199	SH		SOLE		100,199	0	0
Realogy Holdings Corp.	COM	75605Y106	750	20,776	SH		SOLE	1	20,776	0	0
Red Hat, Inc.	COM	756577102	1,754	23,534	SH		SOLE		23,534	0	0
RenaissanceRe Holdings, Ltd.	COM	G7496G103	24,702	206,145	SH		SOLE		206,145	0	0
Roper Technologies, Inc.	COM	776696106	2,759	15,097	SH		SOLE		15,097	0	0
Salesforce.com, Inc.	COM	79466L302	3,357	45,472	SH		SOLE		45,472	0	0
Sally Beauty Holdings, Inc.	COM	79546E104	19,664	607,289	SH		SOLE		607,289	0	0
Scripps Networks Interactive, Inc. Class A	CL A COM	811065101	1,667	25,452	SH		DFND	1	25,452	0	0
Sovran Self Storage, Inc., REIT	COM	84610H108	6,976	59,142	SH		SOLE		59,142	0	0
Stanley Black & Decker, Inc.	COM	854502101	22,039	209,477	SH		SOLE		209,477	0	0
Starbucks Corp.	COM	855244109	3,676	61,572	SH		SOLE		61,572	0	0
State Street Corp.	COM	857477103	2,157	36,852	SH		SOLE		36,852	0	0
SunPower Corp.	COM	867652406	1,166	52,172	SH		SOLE		52,172	0	0
Syntel, Inc.	COM	87162H103	19,739	395,337	SH		SOLE		395,337	0	0
T Rowe Price Group, Inc.	COM	74144T108	4,016	54,664	SH		SOLE		54,664	0	0
TEGNA, Inc.	COM	87901j105	305	13,000	SH		SOLE	1	13,000	0	0
TJX Cos., Inc., The	COM	872540109	297	3,787	SH		SOLE	1	3,787	0	0
Tableau Software, Inc., Class A	CL A	87336U105	752	16,387	SH		SOLE		16,387	0	0
Tailored Brands, Inc.	COM	87403a107	3,028	169,152	SH		SOLE		169,152	0	0
Texas Instruments, Inc.	COM	882508104	3,493	60,840	SH		DFND	1	60,840	0	0
TheStreet, Inc.	COM	88368Q103	1,825	1,471,653	SH		SOLE		1,471,653	0	0
Thermo Fisher Scientific, Inc.	COM	883556102	21,826	154,151	SH		SOLE		154,151	0	0
Thermon Group Holdings, Inc.	COM	88362t103	10,099	575,106	SH		SOLE		575,106	0	0
TiVo, Inc.	COM	888706108	7,352	773,070	SH		SOLE		773,070	0	0
Time Warner Cable, Inc.	COM	88732J207	321	1,567	SH		SOLE	1	1,567	0	0
Time Warner, Inc.	COM	887317303	14,442	199,056	SH		SOLE		199,056	0	0
US Bancorp	COM	902973304	10,562	260,215	SH		DFND	1	260,215	0	0
Ulta Salon Cosmetics & Fragrance, Inc.	COM	90384S303	256	1,320	SH		SOLE	1	1,320	0	0
United Parcel Service, Inc., Class B	CL B	911312106	18,809	178,337	SH		DFND	1	178,337	0	0
Unitil Corp.	COM	913259107	14,631	344,351	SH		SOLE		344,351	0	0
VF Corp.	COM	918204108	1,448	22,359	SH		SOLE		22,359	0	0
Verint Systems, Inc.	COM	92343X100	3,497	104,776	SH		SOLE		104,776	0	0
Verizon Communications, Inc.	COM	92343V104	5,761	106,525	SH		DFND	1	106,525	0	0
Visa, Inc., Class A	COM CL A	92826C839	19,549	255,615	SH		DFND	1	255,615	0	0
Vodafone Group PLC, ADR	SPNSR ADR NO PAR	92857W308	1,013	31,608	SH		SOLE		31,608	0	0
WCI Communities, Inc.	COM PAR $0.01	92923C807	12,264	660,052	SH		SOLE		660,052	0	0
Walt Disney Co., The	COM DISNEY	254687106	15,263	153,691	SH		DFND	1	153,691	0	0
Waste Management, Inc.	COM	94106L109	276	4,681	SH		SOLE		4,681	0	0
Wells Fargo & Co.	COM	949746101	1,436	29,704	SH		SOLE	1	29,704	0	0
Westell Technologies, Inc., Class A	CL A	957541105	1,832	1,565,681	SH		SOLE		1,565,681	0	0
Weyerhaeuser Co., REIT	COM	962166104	5,056	163,187	SH		DFND	1	163,187	0	0
White Mountains Insurance Group, Ltd.	COM	G9618E107	26,553	33,084	SH		SOLE		33,084	0	0
Xerox Corp.	COM	984121103	1,226	109,830	SH		SOLE	1	109,830	0	0
Yahoo!, Inc.	COM	984332106	1,784	48,474	SH		SOLE	1	48,474	0	0
Zoetis, Inc.	CL A	98978V103	21,753	490,703	SH		SOLE		490,703	0	0
eBay, Inc.	COM	278642103	1,545	64,766	SH		SOLE		64,766	0	0
iShares MSCI EAFE ETF	MSCI EAFE ETF	464287465	1,293	22,629	SH		DFND	1	22,629	0	0