Granahan Investment Management, LLC

Name: Granahan Investment Management, LLC 13F holdings, Q3 2025
Creator: Granahan Investment Management, LLC
Published: 2025-11-14

Q2 2026Q1 2026Q4 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024

In its 13F for Q3 2025 (holdings as of September 30, 2025, filed November 14, 2025), Granahan Investment Management, LLC reported 146 stock positions worth $2.4 billion. Its top holding was Porch (PRCH) at 6.6% of the portfolio, followed by Genius Sports (GENI, 4.0%) and Oddity Tech Class A (ODD, 3.8%). Compared with Q2 2025, it opened 19 new positions, sold out of 26, added to 60 and reduced 66. The biggest buy was Cellebrite Di (CLBT, shares +1108%) and the biggest sale Marex UK (MRX, shares −49%).

Most Recent 13F: Q2 2026
Location: WALTHAM, MA
CIK: 0001026710
Portfolio Value: $2.4B (Q3 2025)
SEC Filing: 0001398344-25-020897 ↗ filed Nov 14, 2025

Holdings Value

Holdings 146 stocks · $2.4B


PRCH Porch Group Inc.	6.62%	9,636,692	$161.7M	Reduce -17.1%
GENI Genius Sports Ltd.	4.04%	7,977,172	$98.8M	Reduce -4.3%
ODD Oddity Tech Ltd. Class A	3.84%	1,506,457	$93.9M	Add +11.2%
MGNI Magnite Inc.	3.45%	3,873,179	$84.4M	Add +6.3%
VCTR Victory Capital Holding - A	3.18%	1,198,560	$77.6M	Add +0.3%
FIX Comfort Systems USA Inc.	3.13%	92,772	$76.6M	Add +35.2%
INDI Indie Semiconductor Inc. Class A	2.91%	17,474,795	$71.1M	Reduce -10.3%
CRS Carpenter Technology	2.71%	269,437	$66.2M	Add +16.3%
AXON Axon Enterprise Inc.	2.28%	77,451	$55.6M	Reduce -7.4%
LEU Centrus Energy Corp. Class A	2.14%	168,660	$52.3M	Reduce -18.4%
SRAD Sportradar Group AG-A	2.09%	1,893,741	$50.9M	Reduce -17.6%
CLBT Cellebrite Di Ltd.	1.99%	2,629,299	$48.7M	Add +1108.5%
LTH Life Time Group Holdings Inc.	1.91%	1,693,195	$46.7M	Add +1.4%
SMTC Semtech Corp.	1.88%	641,492	$45.8M	Reduce -35.3%
TOST Toast Inc. Class A	1.85%	1,237,612	$45.2M	Reduce -23.2%
FTAI Ftai Aviation Ltd.	1.83%	267,372	$44.6M	Add +114.1%
GLBE Global-E Online Ltd.	1.79%	1,221,221	$43.7M	Add +30.8%
SPSC SPS Commerce Inc.	1.69%	396,780	$41.3M	Add +6.5%
KRUS Kura Sushi USA Inc. Class A	1.63%	671,012	$39.9M	Add +125.4%
COMP Compass Inc. Class A	1.58%	4,806,314	$38.6M	Add +7.8%
APPS Digital Turbine Inc.	1.50%	5,713,937	$36.6M	Add +77.2%
MRX Marex UK Holdings Ltd. filed as MAREX GROUP PLC	1.45%	1,054,954	$35.5M	Reduce -49.2%
PHR Phreesia Inc.	1.33%	1,380,626	$32.5M	Add +6.0%
NXT Nextpower Inc. filed as NEXTRACKER INC	1.26%	415,166	$30.7M	Add +219.8%
AMRC Ameresco Inc. Class A	1.22%	890,072	$29.9M	Add +108.3%
CWST Casella Waste Systems Inc. Class A	1.22%	314,344	$29.8M	Add +0.6%
ACHR Archer Aviation Inc. Class A	1.15%	2,940,100	$28.2M	Reduce -9.3%
MOD Modine Manufacturing Co.	1.09%	186,914	$26.6M	Add +76.2%
KRNT Kornit Digital Ltd.	1.08%	1,955,150	$26.4M	Add +6.9%
FWRG First Watch Restaurant Group	1.07%	1,667,332	$26.1M	Add +1.2%
STEP Stepstone Group Inc. Class A	1.02%	381,455	$24.9M	Add +176.5%
RMBS Rambus Inc.	1.02%	238,443	$24.8M	Add +83.3%
ZETA Zeta Global Holdings Corp. Class A	1.01%	1,244,466	$24.7M	Add +65.3%
CSGP Costar Group Inc.	0.93%	270,166	$22.8M	Reduce -10.2%
DSGX The Descartes Systems Grp	0.83%	215,944	$20.3M	Reduce -39.3%
SIMO Silicon Motion Technol-ADR	0.81%	207,758	$19.7M	Add +59.7%
RBC RBC Bearings Inc.	0.73%	45,850	$17.9M	Reduce -26.0%
ENVX Enovix Corp.	0.71%	1,749,649	$17.4M	Add +17.5%
GTES Gates Industrial Corp. UK Ltd.	0.69%	682,310	$16.9M	Reduce -26.5%
TRNS Transcat Inc.	0.69%	228,565	$16.7M	Reduce -0.0%
FIGR Figure Technology Solut Class A	0.68%	458,594	$16.7M	New
STKL Sunopta Inc.	0.65%	2,728,251	$16.0M	Reduce -25.2%
EXAS Exact Sciences Corp.	0.63%	281,918	$15.4M	Reduce -12.6%
SIBN Si-Bone Inc.	0.63%	1,039,649	$15.3M	Reduce -17.8%
FOUR SHIFT4 Payments Inc. Class A	0.62%	196,810	$15.2M	Reduce -23.4%
TCBI Texas Capital Bancshares Inc.	0.59%	169,790	$14.4M	Reduce -6.7%
KIDS Orthopediatrics Corp.	0.58%	759,951	$14.1M	Reduce -21.4%
ELF Elf Beauty Inc.	0.54%	98,837	$13.1M	Add +12.2%
TSEM Tower Semiconductor Ltd.	0.53%	178,188	$12.9M	Add +42.6%
NTNX Nutanix Inc. Class A	0.53%	173,109	$12.9M	Reduce -10.3%
BELFB Bel Fuse Inc. Class B	0.50%	87,310	$12.3M	Reduce -19.8%
CRDO Credo Technology Group Holdi	0.50%	83,925	$12.2M	Add +93.6%
CECO Ceco Environmental Corp.	0.49%	234,699	$12.0M	Reduce -33.3%
QXO Qxo Inc.	0.48%	620,819	$11.8M	Add +1.3%
MTRN Materion Corp.	0.47%	94,276	$11.4M	Reduce -22.1%
HUBS HubSpot Inc.	0.46%	24,057	$11.3M	Reduce -35.6%
KNSA Kiniksa Pharmaceuticals Inte	0.45%	283,571	$11.0M	Reduce -8.8%
ALHC Alignment Healthcare Inc.	0.41%	580,729	$10.1M	Reduce -22.3%
BLFS Biolife Solutions Inc.	0.41%	392,096	$10.0M	Reduce -39.0%
AGYS Agilysys Inc.	0.41%	94,224	$9.9M	Add +288.5%
NCLH Norwegian Cruise Line Holdin	0.41%	401,759	$9.9M	Reduce -33.1%
OKTA Okta Inc.	0.40%	105,403	$9.7M	Add +45.5%
ONTO Onto Innovation Inc.	0.39%	74,122	$9.6M	Add +119.6%
VRNS Varonis Systems Inc.	0.39%	164,132	$9.4M	Add +12.1%
RGEN Repligen Corp.	0.38%	69,871	$9.3M	Reduce -48.3%
LENZ Lenz Therapeutics Inc.	0.36%	191,397	$8.9M	Add +4.4%
JBTM JBT Marel Corp.	0.36%	63,365	$8.9M	Reduce -21.4%
VECO Veeco Instruments Inc.	0.36%	292,247	$8.9M	Reduce -23.8%
SN Sharkninja Inc.	0.36%	85,589	$8.8M	Reduce -3.2%
KVYO Klaviyo Inc. Class A	0.35%	310,879	$8.6M	Reduce -35.2%
BBIO Bridgebio Pharma Inc.	0.34%	161,278	$8.4M	Add +95.0%
CVLT Commvault Systems Inc.	0.32%	41,879	$7.9M	Add +287.9%
FROG Jfrog Ltd.	0.32%	164,475	$7.8M	Reduce -30.6%
SLNO Soleno Therapeutics Inc.	0.30%	109,253	$7.4M	Add +82.2%
EXLS Exlservice Holdings Inc.	0.30%	165,993	$7.3M	Add +92.0%
VERX Vertex Inc. Class A	0.29%	289,309	$7.2M	Add +431.5%
ALKT Alkami Technology Inc.	0.27%	270,164	$6.7M	New
KNSL Kinsale Capital Group Inc.	0.27%	15,622	$6.6M	Add +3.1%
ACVA Acv Auctions Inc. Class A	0.26%	651,344	$6.5M	Reduce -58.5%
AIP Arteris Inc.	0.26%	621,625	$6.3M	Add +725.7%
MRUS Merus NV	0.26%	66,208	$6.2M	Reduce -17.9%
RCUS Arcus Biosciences Inc.	0.25%	455,596	$6.2M	Reduce -7.1%
SNDX Syndax Pharmaceuticals Inc.	0.25%	396,336	$6.1M	Reduce -60.0%
BOOT Boot Barn Holdings Inc.	0.25%	36,656	$6.1M	Add +43.8%
STOK Stoke Therapeutics Inc.	0.24%	253,899	$6.0M	Reduce -52.3%
NTLA Intellia Therapeutics Inc.	0.24%	342,586	$5.9M	Reduce -62.5%
ZYME Zymeworks Inc.	0.24%	345,331	$5.9M	Reduce -9.3%
NPKI NPK International Inc.	0.23%	499,940	$5.7M	Reduce -24.0%
RVMD Revolution Medicines Inc.	0.23%	118,692	$5.5M	Reduce -2.5%
EWTX Edgewise Therapeutics Inc.	0.23%	339,617	$5.5M	Reduce -16.2%
ADTN Adtran Holdings Inc.	0.22%	582,490	$5.5M	Add +190.8%
LITE Lumentum Holdings Inc.	0.22%	32,881	$5.4M	New
APGE Apogee Therapeutics Inc.	0.22%	132,400	$5.3M	Add +1.0%
CERT Certara Inc.	0.21%	425,999	$5.2M	Add +5.2%
POWL Powell Industries Inc.	0.21%	16,764	$5.1M	Reduce -62.1%
NVMI Nova Ltd.	0.21%	15,728	$5.0M	Reduce -42.9%
RYTM Rhythm Pharmaceuticals Inc.	0.21%	49,728	$5.0M	Add +20.8%
IMNM Immunome Inc.	0.20%	426,219	$5.0M	Add +8.5%
VKTX Viking Therapeutics Inc.	0.20%	189,529	$5.0M	Reduce -37.9%
EYPT Eyepoint Inc.	0.20%	347,892	$5.0M	Add +2.0%
SRRK Scholar Rock Holding Corp.	0.20%	129,914	$4.8M	Add +77.0%
MEC Mayville Engineering Co. Inc.	0.20%	349,267	$4.8M	Reduce -29.9%
GRBK Green Brick Partners Inc.	0.19%	61,870	$4.6M	Reduce -40.7%
ANAB Anaptysbio Inc.	0.19%	147,773	$4.5M	Add +12.2%
LGND Ligand Pharmaceuticals	0.18%	24,962	$4.4M	New
OWLT Owlet Inc.	0.18%	509,904	$4.3M	Add +135.9%
IMVT Immunovant Inc.	0.18%	266,221	$4.3M	Add +24.9%
WSC Willscot Holdings Corp.	0.17%	200,447	$4.2M	Reduce -60.0%
CALY Callaway Golf Company filed as TOPGOLF CALLAWAY BRANDS CORP	0.17%	440,926	$4.2M	Reduce -20.8%
CCOI Cogent Communications Holdin	0.17%	108,989	$4.2M	Reduce -51.5%
UTI Universal Technical Institut	0.17%	124,246	$4.0M	Add +107.7%
CFLT Confluent Inc. Class A	0.16%	191,479	$3.8M	Reduce -40.9%
TSHA Taysha Gene Therapies Inc.	0.15%	1,116,629	$3.7M	Add +16.5%
CIEN Ciena Corp.	0.15%	24,612	$3.6M	Reduce -69.5%
XENE Xenon Pharmaceuticals Inc.	0.14%	87,470	$3.5M	Reduce -63.6%
NTRA Natera Inc.	0.13%	20,419	$3.3M	Add +5.4%
ARLO Arlo Technologies Inc.	0.13%	192,918	$3.3M	New
CYTK Cytokinetics Inc.	0.12%	53,550	$2.9M	New
XERS Xeris Biopharma Holdings Inc.	0.12%	350,168	$2.9M	New
CRVL Corvel Corp.	0.11%	35,151	$2.7M	Reduce -19.9%
IDCC Interdigital Inc.	0.11%	7,455	$2.6M	Reduce -31.1%
IRTC Irhythm Holdings Inc.	0.11%	14,940	$2.6M	Add +18.0%
WGS Genedx Holdings Corp.	0.10%	23,709	$2.6M	Add +105.3%
LSCC Lattice Semiconductor Corp.	0.10%	34,838	$2.6M	Reduce -69.3%
ONT Onterris Inc. filed as MONTROSE ENVIRONMENTAL GROUP	0.10%	90,740	$2.5M	New
CELC Celcuity Inc.	0.10%	49,281	$2.4M	New
LIND Lindblad Expeditions Holding	0.10%	187,797	$2.4M	Add +17.3%
DAVE Dave Inc.	0.10%	12,037	$2.4M	New
NEXN Nexxen International Ltd.	0.09%	241,710	$2.2M	New
NTSK Netskope Inc. Class A	0.09%	97,096	$2.2M	New
BWXT BWX Technologies Inc.	0.08%	10,527	$1.9M	New
INSM Insmed Inc.	0.08%	13,402	$1.9M	Reduce -88.4%
WEAV Weave Communications Inc.	0.07%	264,398	$1.8M	Add +11.9%
SG Sweetgreen Inc. Class A	0.07%	214,411	$1.7M	Reduce -82.3%
BBNX Beta Bionics Inc.	0.07%	85,741	$1.7M	New
OPRX Optimizerx Corp.	0.06%	71,046	$1.5M	New
SLAB Silicon Laboratories Inc.	0.05%	9,756	$1.3M	Reduce -43.8%
TGEN Tecogen Inc./Waltham Ma	0.04%	112,338	$990K	New
MASS 908 Devices Inc.	0.02%	64,338	$564K	New
IRMD Iradimed Corp.	0.02%	6,615	$471K	Reduce -11.9%
CEVA Ceva Inc.	0.02%	17,731	$468K	Reduce -32.4%
NSLR Neostellar Capital Corp. filed as SURO CAPITAL CORP	0.01%	34,599	$311K	No change
CHEF The Chefs' Warehouse Inc.	0.01%	5,131	$299K	New
AZTA Azenta Inc.	0.01%	9,748	$280K	Add +20.0%
HBIO Harvard Bioscience Inc.	0.01%	603,519	$265K	Reduce -59.8%
SHLS Shoals Technologies Group -A	0.00%	14,078	$104K	New

Portfolio Sells Q2 2025 → Q3 2025


MRX Marex UK Holdings Ltd.	Reduce -49.2%	1.45%	−1.89
TOST Toast Inc. Class A	Reduce -23.2%	1.85%	−1.06
CRCL Circle Internet Group Inc.	Sold out	0.00%	−1.02
ACVA Acv Auctions Inc. Class A	Reduce -58.5%	0.26%	−0.77
PAR Par Technology Corp.	Sold out	0.00%	−0.74
SG Sweetgreen Inc. Class A	Reduce -82.3%	0.07%	−0.66
DSGX The Descartes Systems Grp	Reduce -39.3%	0.83%	−0.64
PCTY Paylocity Holding Corp.	Sold out	0.00%	−0.60
P Everpure Inc. Class A	Sold out	0.00%	−0.59
AXON Axon Enterprise Inc.	Reduce -7.4%	2.28%	−0.54
SRAD Sportradar Group AG-A	Reduce -17.6%	2.09%	−0.54
ETOR Etoro Group Ltd. Class A	Sold out	0.00%	−0.54
SPT Sprout Social Inc. Class A	Sold out	0.00%	−0.44
HQY Healthequity Inc.	Sold out	0.00%	−0.43
FOUR SHIFT4 Payments Inc. Class A	Reduce -23.4%	0.62%	−0.41
INSM Insmed Inc.	Reduce -88.4%	0.08%	−0.40
WSC Willscot Holdings Corp.	Reduce -60.0%	0.17%	−0.39
HUBS HubSpot Inc.	Reduce -35.6%	0.46%	−0.39
SIBN Si-Bone Inc.	Reduce -17.8%	0.63%	−0.34
CYBR Cyberark Software Ltd./Israel	Sold out	0.00%	−0.34
KVYO Klaviyo Inc. Class A	Reduce -35.2%	0.35%	−0.30
RGEN Repligen Corp.	Reduce -48.3%	0.38%	−0.30
PTC PTC Inc.	Sold out	0.00%	−0.30
ALAB Astera Labs Inc.	Sold out	0.00%	−0.29
CORZ Core Scientific Inc.	Sold out	0.00%	−0.29
ACHR Archer Aviation Inc. Class A	Reduce -9.3%	1.15%	−0.28
CCOI Cogent Communications Holdin	Reduce -51.5%	0.17%	−0.27
KIDS Orthopediatrics Corp.	Reduce -21.4%	0.58%	−0.27
RBC RBC Bearings Inc.	Reduce -26.0%	0.73%	−0.24
KNF Knife River Corp.	Sold out	0.00%	−0.23
PRO Pros Holdings Inc.	Sold out	0.00%	−0.22
STKL Sunopta Inc.	Reduce -25.2%	0.65%	−0.21
QLYS Qualys Inc.	Sold out	0.00%	−0.18
GTES Gates Industrial Corp. UK Ltd.	Reduce -26.5%	0.69%	−0.18
CFLT Confluent Inc. Class A	Reduce -40.9%	0.16%	−0.17
POWL Powell Industries Inc.	Reduce -62.1%	0.21%	−0.17
XENE Xenon Pharmaceuticals Inc.	Reduce -63.6%	0.14%	−0.16
SMMT Summit Therapeutics Inc.	Sold out	0.00%	−0.16
BLFS Biolife Solutions Inc.	Reduce -39.0%	0.41%	−0.15
MLTX Moonlake Immunotherapeutics	Sold out	0.00%	−0.15
SPIR Spire Global Inc.	Sold out	0.00%	−0.14
SNDX Syndax Pharmaceuticals Inc.	Reduce -60.0%	0.25%	−0.13
MEC Mayville Engineering Co. Inc.	Reduce -29.9%	0.20%	−0.13
VKTX Viking Therapeutics Inc.	Reduce -37.9%	0.20%	−0.13
LSCC Lattice Semiconductor Corp.	Reduce -69.3%	0.10%	−0.12
CIEN Ciena Corp.	Reduce -69.5%	0.15%	−0.12
TRNS Transcat Inc.	Reduce -0.0%	0.69%	−0.11
CMCO Columbus McKinnon Corp.	Sold out	0.00%	−0.11
PRTA Prothena Corp. PLC	Sold out	0.00%	−0.11
NTLA Intellia Therapeutics Inc.	Reduce -62.5%	0.24%	−0.11

Portfolio Buys Q2 2025 → Q3 2025


CLBT Cellebrite Di Ltd.	Add +1108.5%	1.99%	+1.85
FIX Comfort Systems USA Inc.	Add +35.2%	3.13%	+1.64
FTAI Ftai Aviation Ltd.	Add +114.1%	1.83%	+1.24
NXT Nextpower Inc.	Add +219.8%	1.26%	+0.97
AMRC Ameresco Inc. Class A	Add +108.3%	1.22%	+0.96
APPS Digital Turbine Inc.	Add +77.2%	1.50%	+0.72
STEP Stepstone Group Inc. Class A	Add +176.5%	1.02%	+0.71
FIGR Figure Technology Solut Class A	New	0.68%	+0.68
RMBS Rambus Inc.	Add +83.3%	1.02%	+0.68
MOD Modine Manufacturing Co.	Add +76.2%	1.09%	+0.66
KRUS Kura Sushi USA Inc. Class A	Add +125.4%	1.63%	+0.59
ZETA Zeta Global Holdings Corp. Class A	Add +65.3%	1.01%	+0.54
GLBE Global-E Online Ltd.	Add +30.8%	1.79%	+0.51
COMP Compass Inc. Class A	Add +7.8%	1.58%	+0.44
SIMO Silicon Motion Technol-ADR	Add +59.7%	0.81%	+0.41
CRDO Credo Technology Group Holdi	Add +93.6%	0.50%	+0.34
TSEM Tower Semiconductor Ltd.	Add +42.6%	0.53%	+0.31
AGYS Agilysys Inc.	Add +288.5%	0.41%	+0.29
ALKT Alkami Technology Inc.	New	0.27%	+0.27
ONTO Onto Innovation Inc.	Add +119.6%	0.39%	+0.25
CVLT Commvault Systems Inc.	Add +287.9%	0.32%	+0.25
AIP Arteris Inc.	Add +725.7%	0.26%	+0.23
LITE Lumentum Holdings Inc.	New	0.22%	+0.22
VERX Vertex Inc. Class A	Add +431.5%	0.29%	+0.22
BBIO Bridgebio Pharma Inc.	Add +95.0%	0.34%	+0.20
LGND Ligand Pharmaceuticals	New	0.18%	+0.18
ADTN Adtran Holdings Inc.	Add +190.8%	0.22%	+0.15
LENZ Lenz Therapeutics Inc.	Add +4.4%	0.36%	+0.15
EXLS Exlservice Holdings Inc.	Add +92.0%	0.30%	+0.15
ARLO Arlo Technologies Inc.	New	0.13%	+0.13
CYTK Cytokinetics Inc.	New	0.12%	+0.12
XERS Xeris Biopharma Holdings Inc.	New	0.12%	+0.12
OWLT Owlet Inc.	Add +135.9%	0.18%	+0.10
CRS Carpenter Technology	Add +16.3%	2.71%	+0.10
ONT Onterris Inc.	New	0.10%	+0.10
OKTA Okta Inc.	Add +45.5%	0.40%	+0.10
CELC Celcuity Inc.	New	0.10%	+0.10
RYTM Rhythm Pharmaceuticals Inc.	Add +20.8%	0.21%	+0.10
DAVE Dave Inc.	New	0.10%	+0.10
SLNO Soleno Therapeutics Inc.	Add +82.2%	0.30%	+0.10
SRRK Scholar Rock Holding Corp.	Add +77.0%	0.20%	+0.09
NEXN Nexxen International Ltd.	New	0.09%	+0.09
BOOT Boot Barn Holdings Inc.	Add +43.8%	0.25%	+0.09
NTSK Netskope Inc. Class A	New	0.09%	+0.09
ELF Elf Beauty Inc.	Add +12.2%	0.54%	+0.09
ENVX Enovix Corp.	Add +17.5%	0.71%	+0.09
VRNS Varonis Systems Inc.	Add +12.1%	0.39%	+0.08
UTI Universal Technical Institut	Add +107.7%	0.17%	+0.08
VCTR Victory Capital Holding - A	Add +0.3%	3.18%	+0.08
BWXT BWX Technologies Inc.	New	0.08%	+0.08

All Filings

Quarter	Positions	13F Reported Value	Top Holdings
Q2 2026	150	$2.8B	PRCH, SIMO, FPS, INDI, VCTR
Q1 2026	149	$2.1B	CRS, PRCH, FTAI, MOD, VCTR
Q4 2025	157	$2.3B	PRCH, GENI, CRS, FTAI, VCTR
Q3 2025	146	$2.4B	PRCH, GENI, ODD, MGNI, VCTR
Q2 2025	153	$2.5B	PRCH, ODD, MGNI, GENI, MRX
Q1 2025	159	$2.0B	PRCH, GENI, MRX, ODD, VCTR
Q4 2024	180	$2.4B	AXON, VCTR, INDI, GENI, MRX
Q3 2024	187	$2.5B	EVH, AXON, ZETA, INDI, TOST
Q2 2024	180	$2.5B	INDI, ZETA, AXON, MGNI, SPT
Q1 2024	181	$2.8B	INDI, SPT, AXON, ZETA, EVH