AKTS akoustis technologies, inc. AMEX Telecommunications Equipment AWX avalon holdings corporation AMEX Environmental Services CQP cheniere energy partners, lp common units AMEX Oil/Gas Transmission ELLO ellomay capital ltd ordinary shares (israel) AMEX Electric Utilities: Central LNG cheniere energy, inc. AMEX Oil/Gas Transmission NEP nextera energy partners, lp common units representing limited partner interests AMEX Electric Utilities: Central ADTN adtran holdings, inc. NASDAQ Telecommunications Equipment ARTNA artesian resources corporation - class a non-voting NASDAQ Water Supply ATNI atn international, inc. NASDAQ Telecommunications Equipment AUDC audiocodes ltd. - ordinary shares NASDAQ Telecommunications Equipment CDZI cadiz, inc. NASDAQ Water Supply CIEN ciena corporation NASDAQ Telecommunications Equipment CLFD clearfield, inc. NASDAQ Telecommunications Equipment CLNE clean energy fuels corp. NASDAQ Natural Gas Distribution CLRO clearone, inc. NASDAQ Telecommunications Equipment CNSL consolidated communications holdings, inc. NASDAQ Telecommunications Equipment CWCO consolidated water co. ltd. - ordinary shares NASDAQ Water Supply CWST casella waste systems, inc. - class a NASDAQ Environmental Services DZSI dzs inc NASDAQ Telecommunications Equipment EGHT 8x8 inc NASDAQ Telecommunications Equipment GWRS global water resources, inc. - common stock NASDAQ Water Supply INFN infinera corporation NASDAQ Telecommunications Equipment MSEX middlesex water company NASDAQ Water Supply NEXT nextdecade corporation NASDAQ Oil & Gas Production NTGR netgear, inc. NASDAQ Telecommunications Equipment OPTT ocean power technologies, inc. NASDAQ Electric Utilities: Central OTTR otter tail corporation NASDAQ Electric Utilities: Central PCYO pure cycle corporation NASDAQ Water Supply RGCO rgc resources inc. NASDAQ Oil & Gas Production SHEN shenandoah telecommunications co NASDAQ Telecommunications Equipment SPOK spok holdings, inc. NASDAQ Telecommunications Equipment SUNW sunworks, inc. NASDAQ Telecommunications Equipment VEON veon ltd. - american depositary shares NASDAQ Telecommunications Equipment VOD vodafone group plc - american depositary shares each representing ten ordinary shares NASDAQ Telecommunications Equipment VVPR vivopower international plc - ordinary shares NASDAQ Power Generation YORW the york water company NASDAQ Water Supply AEE ameren corporation NYSE Power Generation AEP american electric power company, inc. NYSE Electric Utilities: Central AGR avangrid, inc. NYSE Electric Utilities: Central ALE allete, inc. NYSE Power Generation AM antero midstream corporation NYSE Natural Gas Distribution AMX america movil, s.a.b. de c.v. american depositary shares (each representing the right to receive twenty (20) series b shares NYSE Telecommunications Equipment AQN algonquin power & utilities corp. common shares NYSE Electric Utilities: Central AROC archrock, inc. NYSE Natural Gas Distribution ATO atmos energy corporation NYSE Oil/Gas Transmission AVA avista corporation NYSE Power Generation AWK american water works company, inc. NYSE Water Supply AWR american states water company NYSE Water Supply BCE bce, inc. NYSE Telecommunications Equipment BEP brookfield renewable partners l.p. limited partnership units NYSE Electric Utilities: Central