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Telemark Asset Management, LLC

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13F filer, CIK 1420816, BOSTON, MA

Telemark Asset Management, LLC reported $764,286,802 across 47 holdings for the quarter ended 2025-03-31, in a 13F-HR filed 2025-05-12. Its ten largest share positions make up 48.97% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0000898432-25-000335

Period
2025-03-31
Reported value
$764M
Holdings
47
Top 10 weight
48.97%
New
9
Sold out
16

Largest buys vs the previous quarter

SecurityShares changeApprox. value
VRTXnew+40,000$19.4M
FNVnew+100,000$15.8M
WCNadded+80,000$15.6M
CRHnew+150,000$13.2M
TRMBadded+190,000$12.5M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
NVDAreduced-350,000-$37.9M
NOWexited-25,000-$26.5M
BILLexited-300,000-$25.4M
IOSPexited-140,000-$15.4M
VRTexited-120,000-$13.6M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q1 2025

Share positions as resolved from 13F-HR 0000898432-25-000335, largest first. % of portfolio is the value over $764,286,802, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
NVDANVIDIA CORPORATIONQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,150,000 shares; 2024Q4: 1,150,000 shares; 2025Q1: 800,000 shares 800,000$86.7M11.34%-350,000Timeline
CCJCAMECO CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,300,000 shares; 2024Q4: 1,300,000 shares; 2025Q1: 1,000,000 shares 1,000,000$41.2M5.39%-300,000Timeline
CSGPCOSTAR GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 500,000 shares; 2024Q4: 400,000 shares; 2025Q1: 500,000 shares 500,000$39.6M5.18%+100,000Timeline
AMZNAMAZON COM INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 250,000 shares; 2024Q4: 250,000 shares; 2025Q1: 200,000 shares 200,000$38.1M4.98%-50,000Timeline
HEIHEICO CORP NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 140,000 shares; 2024Q4: 140,000 shares; 2025Q1: 140,000 shares 140,000$37.4M4.89%0Timeline
WCNWASTE CONNECTIONS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 70,000 shares; 2024Q4: 70,000 shares; 2025Q1: 150,000 shares 150,000$29.3M3.83%+80,000Timeline
RRCRANGE RES CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 400,000 shares; 2025Q1: 700,000 shares 700,000$28M3.66%+300,000Timeline
HEI-AHEICO CORP NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 125,000 shares; 2024Q4: 125,000 shares; 2025Q1: 125,000 shares 125,000$26.4M3.45%0Timeline
GRMNGARMIN LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 135,000 shares; 2024Q4: 135,000 shares; 2025Q1: 120,000 shares 120,000$26.1M3.41%-15,000Timeline
CLHCLEAN HARBORS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 130,000 shares; 2024Q4: 130,000 shares; 2025Q1: 110,000 shares 110,000$21.7M2.84%-20,000Timeline
EQTEQT CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 300,000 shares; 2025Q1: 400,000 shares 400,000$21.4M2.8%+100,000Timeline
METAMETA PLATFORMS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 50,000 shares; 2024Q4: 50,000 shares; 2025Q1: 35,000 shares 35,000$20.2M2.64%-15,000Timeline
ADIANALOG DEVICES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 50,000 shares; 2024Q4: 50,000 shares; 2025Q1: 100,000 shares 100,000$20.2M2.64%+50,000Timeline
TSMTAIWAN SEMICONDUCTOR MANUFACQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 100,000 shares; 2024Q4: 150,000 shares; 2025Q1: 120,000 shares 120,000$19.9M2.61%-30,000Timeline
VRTXVERTEX PHARMACEUTICALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 25,000 shares; 2024Q4: not reported; 2025Q1: 40,000 shares 40,000$19.4M2.54%newTimeline
TRMBTRIMBLE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 60,000 shares; 2025Q1: 250,000 shares 250,000$16.4M2.15%+190,000Timeline
FFIVF5 INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 60,000 shares; 2024Q4: 80,000 shares; 2025Q1: 60,000 shares 60,000$16M2.09%-20,000Timeline
AXONAXON ENTERPRISE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 30,000 shares; 2024Q4: 30,000 shares; 2025Q1: 30,000 shares 30,000$15.8M2.06%0Timeline
FNVFRANCO NEV CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 50,000 shares; 2024Q4: not reported; 2025Q1: 100,000 shares 100,000$15.8M2.06%newTimeline
CRHCRH PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 150,000 shares 150,000$13.2M1.73%newTimeline
GOOGLALPHABET INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 60,000 shares; 2025Q1: 80,000 shares 80,000$12.4M1.62%+20,000Timeline
ASPNASPEN AEROGELS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,492,424 shares; 2024Q4: 1,892,424 shares; 2025Q1: 1,892,424 shares 1,892,424$12.1M1.58%0Timeline
BVBRIGHTVIEW HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 800,000 shares; 2024Q4: 850,000 shares; 2025Q1: 900,000 shares 900,000$11.6M1.51%+50,000Timeline
MTARCELORMITTAL SA LUXEMBOURGQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 400,000 shares 400,000$11.5M1.51%newTimeline
NOVTNOVANTA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 100,000 shares; 2024Q4: 160,000 shares; 2025Q1: 90,000 shares 90,000$11.5M1.51%-70,000Timeline
AMSCAMERICAN SUPERCONDUCTOR CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 600,000 shares; 2024Q4: 600,000 shares; 2025Q1: 600,000 shares 600,000$10.9M1.42%0Timeline
AMTAMERICAN TOWER CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 50,000 shares 50,000$10.9M1.42%newTimeline
ARMARM HOLDINGS PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 150,000 shares; 2024Q4: 150,000 shares; 2025Q1: 100,000 shares 100,000$10.7M1.4%-50,000Timeline
BWXTBWX TECHNOLOGIES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 100,000 shares; 2024Q4: 100,000 shares; 2025Q1: 100,000 shares 100,000$9.87M1.29%0Timeline
OSISOSI SYSTEMS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 50,000 shares; 2025Q1: 50,000 shares 50,000$9.72M1.27%0Timeline
CLBTCELLEBRITE DI LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 400,000 shares; 2024Q4: 500,000 shares; 2025Q1: 500,000 shares 500,000$9.71M1.27%0Timeline
DEDEERE & COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 20,000 shares 20,000$9.39M1.23%newTimeline
GLWCORNING INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 400,000 shares; 2024Q4: 400,000 shares; 2025Q1: 200,000 shares 200,000$9.16M1.2%-200,000Timeline
WGSGENEDX HOLDINGS CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 100,000 shares 100,000$8.86M1.16%newTimeline
HLMNHILLMAN SOLUTIONS CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 750,000 shares; 2024Q4: 900,000 shares; 2025Q1: 1,000,000 shares 1,000,000$8.79M1.15%+100,000Timeline
TEAMATLASSIAN CORPORATIONQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 40,000 shares; 2025Q1: 40,000 shares 40,000$8.49M1.11%0Timeline
CDXSCODEXIS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 2,696,411 shares; 2024Q4: 3,000,000 shares; 2025Q1: 3,000,000 shares 3,000,000$8.07M1.06%0Timeline
MIRMIRION TECHNOLOGIES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 400,000 shares; 2024Q4: 500,000 shares; 2025Q1: 500,000 shares 500,000$7.25M0.95%0Timeline
ASPIASP ISOTOPES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,700,000 shares; 2024Q4: 1,475,000 shares; 2025Q1: 1,475,000 shares 1,475,000$6.92M0.91%0Timeline
BIODESIX INCBIODESIX INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 8,282,490 shares; 2024Q4: 8,282,490 shares; 2025Q1: 8,282,490 shares 8,282,490$5.18M0.68%0
CCCCCC INTELLIGENT SOLUTIONS HLQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,450,000 shares; 2024Q4: 1,450,000 shares; 2025Q1: 500,000 shares 500,000$4.51M0.59%-950,000Timeline
VRRMVERRA MOBILITY CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 700,000 shares; 2024Q4: 600,000 shares; 2025Q1: 200,000 shares 200,000$4.5M0.59%-400,000Timeline
KOPNKOPIN CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 3,000,000 shares 3,000,000$2.8M0.37%newTimeline
RXSTRXSIGHT INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 301,000 shares; 2024Q4: 321,000 shares; 2025Q1: 100,000 shares 100,000$2.52M0.33%-221,000Timeline
SMWBSIMILARWEB LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 300,000 shares; 2025Q1: 230,000 shares 230,000$1.9M0.25%-70,000Timeline
ARBEARBE ROBOTICS LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 1,350,000 shares 1,350,000$1.39M0.18%newTimeline
KRNTKORNIT DIGITAL LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 40,000 shares; 2024Q4: 200,000 shares; 2025Q1: 70,000 shares 70,000$1.34M0.17%-130,000Timeline

Sold out in Q1 2025

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
NOWSERVICENOW INC25,000$26.5Mshares
BILLBILL HOLDINGS INC300,000$25.4Mshares
IOSPINNOSPEC INC140,000$15.4Mshares
VRTVERTIV HOLDINGS CO120,000$13.6Mshares
MSFTMICROSOFT CORP30,000$12.6Mshares
NXENEXGEN ENERGY LTD1,800,000$11.9Mshares
AAPLAPPLE INC40,000$10Mshares
EAELECTRONIC ARTS INC50,000$7.32Mshares
HUBSHUBSPOT INC10,000$6.97Mshares
CRMSALESFORCE INC20,000$6.69Mshares
SNXTD SYNNEX CORPORATION50,000$5.86Mshares
TWLOTWILIO INC50,000$5.4Mshares
TXNTEXAS INSTRS INC25,000$4.69Mshares
KVYOKLAVIYO INC100,000$4.12Mshares
ALTUS POWER INCALTUS POWER INC910,000$3.7Mshares
TTGTTECHTARGET INC150,000$2.97Mshares

How Q1 2025 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0000898432-25-000335 base2025-05-12acceptance time not in the bulk data set