13F Filings History of ARDSLEY ADVISORY PARTNERS LP

Latest 13F report
Q4 2025 - 17 Feb 2026
Value $
$785,359,975
Signature - Title
Steven Napoli - Partner
Location
Norwalk, CT
Summary
This page shows a list of all the recent 13F filings made by ARDSLEY ADVISORY PARTNERS LP. Form 13F is required to be filed within 45 days of the end of a calendar quarter. ARDSLEY ADVISORY PARTNERS LP reported 113 stock holdings with total value $785,359,975 as of Q4 2025. Top holdings included LLY, FSLR, LITE, AVGO, and RUN.

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Holdings Value
Quarter Holdings Value $ Bought Sold Net Top Holdings Form Type Filing Time
Q4 2025 113 $785,359,975 +$325,239,405 -$264,577,800 +$60,661,605 LLY, FSLR, LITE, AVGO, RUN 13F-HR 17 Feb 2026, 09:25
Q3 2025 99 $652,122,407 +$314,318,915 -$354,953,673 -$40,634,758 FSLR, HUT, RUN, ORCL, AVGO 13F-HR 14 Nov 2025, 10:36
Q2 2025 108 $611,942,986 +$305,096,579 -$219,611,066 +$85,485,513 FLR, NVDA, ANET, ORCL, AVGO 13F-HR 14 Aug 2025, 09:34
Q1 2025 102 $431,733,350 +$207,157,794 -$238,134,879 -$30,977,085 FLR, AVGO, AGI, CLS, OKTA 13F-HR 15 May 2025, 10:16
Q4 2024 101 $516,333,956 +$218,478,476 -$242,370,627 -$23,892,151 CRM, FLR, ITRI, OSCR, INDV 13F-HR 14 Feb 2025, 10:32
Q3 2024 109 $528,474,660 +$201,333,823 -$266,765,880 -$65,432,057 OSCR, ITRI, RUN, FLR, CLS 13F-HR 14 Nov 2024, 10:35
Q2 2024 108 $552,656,926 +$164,839,846 -$300,447,280 -$135,607,434 RUN, FTAI, CLS, ITRI, OSCR 13F-HR 14 Aug 2024, 09:44
Q1 2024 124 $696,077,502 +$328,905,018 -$132,242,101 +$196,662,917 SPY, RUN, CLS, STKL, ITRI 13F-HR 15 May 2024, 10:44
Q4 2023 100 $465,136,128 +$162,784,523 -$141,250,913 +$21,533,610 CLS, STKL, BIOX, HASI, ITRI 13F-HR 14 Feb 2024, 08:54
Q3 2023 90 $369,150,716 +$112,739,880 -$147,964,660 -$35,224,780 CLS, BIOX, STKL, ITRI, RUN 13F-HR 14 Nov 2023, 10:53
Q2 2023 100 $442,967,350 +$147,666,225 -$179,720,548 -$32,054,323 STKL, ITRI, BIOX, FSLR, VST 13F-HR 14 Aug 2023, 08:29
Q1 2023 101 $455,249,975 +$171,412,699 -$123,376,333 +$48,036,366 FSLR, ITRI, STKL, BIOX, DIS 13F-HR 15 May 2023, 09:28
Q4 2022 89 $394,821,462 +$145,864,657 -$125,916,075 +$19,948,582 FSLR, STKL, BIOX, RUN, EVA 13F-HR 14 Feb 2023, 08:35
Q3 2022 72 $376,819,000 +$132,349,632 -$177,464,180 -$45,114,548 STKL, FSLR, RUN, BIOX, AMPS 13F-HR 14 Nov 2022, 13:06
Q2 2022 86 $403,363,000 +$111,165,554 -$138,162,068 -$26,996,514 STKL, CTLP, MBII, RUN, ALT 13F-HR 15 Aug 2022, 11:43
Q1 2022 97 $485,958,000 +$222,508,139 -$110,598,142 +$111,909,997 CTLP, STKL, STAA, MBII, TBT 13F-HR 16 May 2022, 11:48
Q4 2021 82 $423,523,000 +$173,954,092 -$219,226,545 -$45,272,453 CTLP, STKL, DT, SGRY, HZNP 13F-HR 14 Feb 2022, 10:37
Q3 2021 101 $467,210,000 +$137,496,747 -$215,871,387 -$78,374,640 CTLP, DT, HZNP, STKL, AZN 13F-HR 15 Nov 2021, 10:35
Q2 2021 99 $598,329,000 +$255,155,941 -$254,469,575 +$686,366 CTLP, DT, HZNP, STKL, RUN 13F-HR 16 Aug 2021, 11:24
Q1 2021 93 $542,418,000 +$197,994,731 -$185,669,490 +$12,325,241 USAT, STKL, BIDU, DT, ZEN 13F-HR 17 May 2021, 09:54
Q4 2020 101 $509,615,000 +$216,134,170 -$213,126,457 +$3,007,713 STKL, USAT, TMUS, FTAI, AES 13F-HR 16 Feb 2021, 16:22
Q3 2020 126 $410,062,000 +$142,323,241 -$213,640,809 -$71,317,568 STKL, TMUS, EVA, FTAI, BHVN 13F-HR 13 Nov 2020, 16:44
Q2 2020 118 $424,616,000 +$185,796,542 -$111,077,267 +$74,719,275 STKL, MSFT, ABBV, EVA, BHVN 13F-HR 14 Aug 2020, 10:44
Q1 2020 93 $230,108,000 +$58,979,912 -$218,243,680 -$159,263,768 STKL, FTAI, EVA, BHVN, UPLD 13F-HR 15 May 2020, 11:26
Q4 2019 127 $488,581,000 +$167,722,252 -$111,706,754 +$56,015,498 FTAI, STKL, BHVN, EVA, GH 13F-HR 14 Feb 2020, 15:16
Q3 2019 110 $396,594,000 +$99,169,467 -$168,531,607 -$69,362,140 FTAI, BHVN, EVA, RUN, JE 13F-HR 14 Nov 2019, 09:42
Q2 2019 130 $504,973,000 +$151,271,308 -$136,967,263 +$14,304,045 USAT, FTAI, STKL, ELV, RUN Restatement 15 Aug 2019, 11:52
Q1 2019 117 $460,251,000 +$162,803,736 -$126,345,841 +$36,457,895 FTAI, EVA, CELG, STKL, RUN 13F-HR 15 May 2019, 09:38
Q4 2018 95 $373,138,000 +$133,678,469 -$230,230,412 -$96,551,943 RUN, FTAI, AY, STKL, EVA 13F-HR 14 Feb 2019, 10:05
Q3 2018 134 $550,450,000 +$186,788,550 -$243,904,264 -$57,115,714 STKL, MPC, RUN, MSFT, ELV 13F-HR 14 Nov 2018, 09:47
Q2 2018 137 $605,277,000 +$211,103,816 -$272,705,601 -$61,601,785 GLNG, RUN, STKL, ELV, JAZZ 13F-HR 14 Aug 2018, 16:41
Q1 2018 132 $615,439,000 +$272,246,928 -$172,184,716 +$100,062,212 TBT, AY, PROSHARES TR, RUN, XBI 13F-HR 15 May 2018, 16:23
Q4 2017 126 $519,853,000 +$177,077,111 -$226,474,797 -$49,397,686 AY, HASI, XBI, ALXN, ABBV 13F-HR 14 Feb 2018, 18:10
Q3 2017 118 $572,386,000 +$207,502,932 -$173,610,852 +$33,892,080 AY, HASI, ALXN, XBI, STKL 13F-HR 14 Nov 2017, 17:16
Q2 2017 117 $514,483,000 $0 $0 $0 AY, HASI, STKL, ALXN, XBI New Holdings 21 Sep 2017, 14:51
Q2 2017 117 $514,483,000 +$188,139,796 -$212,241,043 -$24,101,247 AY, HASI, STKL, ALXN, XBI 13F-HR 14 Aug 2017, 16:32
Q1 2017 126 $505,202,000 +$195,936,263 -$200,227,519 -$4,291,256 HASI, AY, PEGI, STKL, RITM 13F-HR 15 May 2017, 16:11
Q4 2016 112 $476,513,000 +$165,763,702 -$209,306,316 -$43,542,614 AY, HASI, STKL, AKRXQ, PEGI 13F-HR 14 Feb 2017, 16:08
Q3 2016 140 $544,573,000 +$197,850,716 -$174,805,275 +$23,045,441 AKRXQ, HASI, AY, STKL, GOOG 13F-HR 14 Nov 2016, 16:42
Q2 2016 139 $498,525,000 +$179,686,442 -$194,486,277 -$14,799,835 AKRXQ, HASI, JAZZ, PEGI, AY 13F-HR 15 Aug 2016, 16:07
Q1 2016 127 $478,738,000 +$167,981,608 -$242,763,132 -$74,781,524 AKRXQ, HASI, JAZZ, NFX, BIS 13F-HR 16 May 2016, 16:43
Q4 2015 127 $593,676,000 +$322,720,356 -$126,597,900 +$196,122,456 AKRXQ, JAZZ, HASI, ABY, AAOI 13F-HR 16 Feb 2016, 16:12
Q3 2015 124 $372,691,000 +$106,474,467 -$416,190,662 -$309,716,195 AKRXQ, JAZZ, HASI, ABY, CYH 13F-HR 16 Nov 2015, 16:35
Q2 2015 162 $791,030,000 +$409,465,480 -$212,923,738 +$196,541,742 SPY, SUNEQ, JAZZ, SCTY, HASI 13F-HR 14 Aug 2015, 16:11
Q1 2015 157 $581,877,000 +$261,391,924 -$231,062,045 +$30,329,879 SUNEQ, JAZZ, HASI, ZBH, CYH 13F-HR 15 May 2015, 16:33
Q4 2014 154 $526,065,000 +$185,130,961 -$257,518,669 -$72,387,708 JAZZ, SUNEQ, ZBH, SCTY, HASI 13F-HR 17 Feb 2015, 16:34
Q3 2014 159 $606,995,000 +$226,127,327 -$310,892,218 -$84,764,891 GILD, JAZZ, SUNEQ, ZBH, CSTM 13F-HR 13 Nov 2014, 13:48
Q2 2014 216 $704,743,000 +$290,766,291 -$222,733,585 +$68,032,706 GILD, JAZZ, SUNEQ, CSTM, ARCC 13F-HR 14 Aug 2014, 17:26
Q1 2014 203 $617,387,000 +$257,406,650 -$278,422,078 -$21,015,428 JAZZ, SUNEQ, CSIQ, URI, CSTM 13F-HR 15 May 2014, 17:18
Q4 2013 153 $605,795,000 $0 $0 $0 JAZZ, CSIQ, SUNEQ, URI, CREE 13F-HR 12 Feb 2014, 17:03