Granahan Investment Management, LLC
In its 13F for Q1 2024 (holdings as of March 31, 2024, filed May 15, 2024), Granahan Investment Management, LLC reported 181 stock positions worth $2.8 billion. Its top holding was Indie Semiconductor Class A (INDI) at 4.8% of the portfolio, followed by Sprout Social Class A (SPT, 3.4%) and Axon Enterprise (AXON, 3.2%). Compared with Q4 2023, it opened 20 new positions, sold out of 19, added to 52 and reduced 108. The biggest buy was Indie Semiconductor Class A (INDI, shares +47%) and the biggest sale HubSpot (HUBS, shares −70%).
- Most Recent 13F
- Q2 2026
- Location
- WALTHAM, MA
- CIK
- 0001026710
- Portfolio Value
- $2.8B (Q1 2024)
- SEC Filing
- 0001398344-24-009678 ↗ filed May 15, 2024
Holdings Value
Holdings 181 stocks · $2.8B
| INDI Indie Semiconductor Inc. Class A | 4.82% | 19,379,926 | $137.2M | Add +46.9% |
| SPT Sprout Social Inc. Class A | 3.35% | 1,598,013 | $95.4M | Reduce -6.1% |
| AXON Axon Enterprise Inc. | 3.24% | 295,204 | $92.4M | Reduce -25.1% |
| ZETA Zeta Global Holdings Corp. Class A | 3.16% | 8,227,602 | $89.9M | Add +1.4% |
| EVH Evolent Health Inc. Class A | 2.88% | 2,505,464 | $82.2M | Reduce -13.7% |
| TOST Toast Inc. Class A | 2.67% | 3,046,955 | $75.9M | Reduce -21.8% |
| GENI Genius Sports Ltd. | 2.38% | 11,860,170 | $67.7M | Reduce -12.7% |
| CSGP Costar Group Inc. | 2.07% | 610,998 | $59.0M | Reduce -14.2% |
| MGNI Magnite Inc. | 2.05% | 5,438,092 | $58.5M | Reduce -19.1% |
| SPSC SPS Commerce Inc. | 2.04% | 313,479 | $58.0M | Reduce -3.4% |
| VCTR Victory Capital Holding - A | 1.87% | 1,255,629 | $53.3M | Add +3.5% |
| PRCH Porch Group Inc. | 1.66% | 11,000,588 | $47.4M | Reduce -7.5% |
| GTLS Chart Industries Inc. | 1.53% | 264,257 | $43.5M | Reduce -30.9% |
| SMAR Smartsheet Inc. Class A | 1.37% | 1,014,322 | $39.1M | Reduce -2.5% |
| DV Doubleverify Holdings Inc. | 1.33% | 1,073,840 | $37.8M | Add +6.8% |
| PCTY Paylocity Holding Corp. | 1.29% | 213,517 | $36.7M | Reduce -39.6% |
| CSTL Castle Biosciences Inc. | 1.27% | 1,627,224 | $36.0M | Reduce -24.9% |
| PHR Phreesia Inc. | 1.26% | 1,494,294 | $35.8M | Add +41.0% |
| GLOB Globant SA | 1.25% | 175,923 | $35.5M | Reduce -20.1% |
| LTH Life Time Group Holdings Inc. | 1.21% | 2,220,521 | $34.5M | Add +40.8% |
| CWST Casella Waste Systems Inc. Class A | 1.16% | 334,974 | $33.1M | Reduce -3.3% |
| WK Workiva Inc. | 1.15% | 385,044 | $32.7M | Reduce -8.1% |
| ARRY Array Technologies Inc. | 1.13% | 2,154,255 | $32.1M | Reduce -4.8% |
| P Everpure Inc. Class A filed as PURE STORAGE INC | 1.02% | 560,248 | $29.1M | Add +20.0% |
| LOVE The Lovesac Co. | 1.00% | 1,256,359 | $28.4M | Reduce -11.9% |
| WSC Willscot Holdings Corp. | 0.99% | 605,454 | $28.2M | Reduce -41.9% |
| RBC RBC Bearings Inc. | 0.98% | 103,397 | $28.0M | Add +5.2% |
| CHEF The Chefs' Warehouse Inc. | 0.93% | 706,322 | $26.6M | Reduce -11.1% |
| ODD Oddity Tech Ltd. Class A | 0.93% | 611,824 | $26.6M | Add +4.3% |
| VKTX Viking Therapeutics Inc. | 0.92% | 318,893 | $26.1M | New |
| SIBN Si-Bone Inc. | 0.92% | 1,592,574 | $26.1M | Add +23.8% |
| KRNT Kornit Digital Ltd. | 0.91% | 1,433,324 | $26.0M | Reduce -35.8% |
| MTRN Materion Corp. | 0.90% | 194,606 | $25.6M | Reduce -14.2% |
| VERX Vertex Inc. Class A | 0.82% | 739,303 | $23.5M | Add +11.4% |
| COMP Compass Inc. Class A | 0.81% | 6,399,400 | $23.0M | Add +215.9% |
| RGEN Repligen Corp. | 0.81% | 124,765 | $22.9M | Reduce -3.8% |
| CMCO Columbus McKinnon Corp. | 0.77% | 489,321 | $21.8M | Reduce -8.1% |
| VECO Veeco Instruments Inc. | 0.76% | 617,846 | $21.7M | Reduce -5.9% |
| THRM Gentherm Inc. | 0.76% | 375,080 | $21.6M | Reduce -9.2% |
| PTLO Portillo's Inc. Class A | 0.76% | 1,518,583 | $21.5M | Add +14.7% |
| COCO The Vita Coco Co. Inc. | 0.75% | 872,706 | $21.3M | Reduce -6.2% |
| VIVID SEATS INC | 0.75% | 3,559,015 | $21.3M | New |
| KIDS Orthopediatrics Corp. | 0.74% | 726,119 | $21.2M | Reduce -5.6% |
| EVER Everquote Inc. Class A | 0.72% | 1,108,053 | $20.6M | Reduce -25.7% |
| EEFT Euronet Worldwide Inc. | 0.71% | 185,041 | $20.3M | Reduce -16.3% |
| FOUR SHIFT4 Payments Inc. Class A | 0.71% | 307,392 | $20.3M | New |
| BLFS Biolife Solutions Inc. | 0.70% | 1,079,845 | $20.0M | Reduce -16.5% |
| CRS Carpenter Technology | 0.70% | 278,335 | $19.9M | New |
| PRO Pros Holdings Inc. | 0.69% | 537,808 | $19.5M | Reduce -11.3% |
| GWRE Guidewire Software Inc. | 0.68% | 165,022 | $19.3M | Add +5.8% |
| TCBI Texas Capital Bancshares Inc. | 0.66% | 305,902 | $18.8M | Reduce -43.3% |
| CALY Callaway Golf Company filed as TOPGOLF CALLAWAY BRANDS CORP | 0.63% | 1,103,713 | $17.8M | Reduce -1.2% |
| BPMC Blueprint Medicines Corp. | 0.60% | 179,317 | $17.0M | Add +7.0% |
| FWRG First Watch Restaurant Group | 0.59% | 684,526 | $16.9M | Reduce -7.6% |
| SIMO Silicon Motion Technol-ADR | 0.58% | 215,700 | $16.6M | New |
| KNSL Kinsale Capital Group Inc. | 0.58% | 31,280 | $16.4M | Reduce -58.4% |
| BMBL Bumble Inc. Class A | 0.57% | 1,433,662 | $16.3M | Add +4.7% |
| QTRX Quanterix Corp. | 0.56% | 671,779 | $15.8M | Add +0.7% |
| PLRX Pliant Therapeutics Inc. | 0.55% | 1,046,845 | $15.6M | Reduce -9.0% |
| RH RH | 0.54% | 44,282 | $15.4M | Reduce -48.2% |
| CYBR Cyberark Software Ltd./Israel | 0.52% | 56,192 | $14.9M | Reduce -12.8% |
| SPXC SPX Technologies Inc. | 0.50% | 116,722 | $14.4M | Reduce -21.1% |
| STKL Sunopta Inc. | 0.50% | 2,072,400 | $14.2M | Reduce -13.4% |
| BBIO Bridgebio Pharma Inc. | 0.50% | 456,986 | $14.1M | Add +17.7% |
| MASS 908 Devices Inc. | 0.46% | 1,734,372 | $13.1M | Reduce -14.9% |
| AMRC Ameresco Inc. Class A | 0.45% | 530,770 | $12.8M | Add +1.7% |
| KNSA Kiniksa Pharmaceuticals Ltd. | 0.45% | 648,087 | $12.8M | Reduce -10.3% |
| CCC CCC Intelligent Solutions Ho | 0.45% | 1,062,436 | $12.7M | Reduce -8.2% |
| NTNX Nutanix Inc. Class A | 0.43% | 198,365 | $12.2M | Reduce -18.7% |
| HUBS HubSpot Inc. | 0.43% | 19,329 | $12.1M | Reduce -70.2% |
| NTRA Natera Inc. | 0.42% | 132,197 | $12.1M | Reduce -14.3% |
| MOD Modine Manufacturing Co. | 0.41% | 121,847 | $11.6M | Reduce -6.8% |
| CFLT Confluent Inc. Class A | 0.40% | 374,122 | $11.4M | Reduce -24.7% |
| ARCT Arcturus Therapeutics Holdin | 0.40% | 336,147 | $11.4M | Reduce -25.4% |
| EWTX Edgewise Therapeutics Inc. | 0.39% | 608,012 | $11.1M | Reduce -43.4% |
| CCOI Cogent Communications Holdin | 0.39% | 169,662 | $11.1M | Add +22.1% |
| UDMY Udemy Inc. | 0.39% | 1,004,908 | $11.0M | Reduce -10.1% |
| MLTX Moonlake Immunotherapeutics | 0.38% | 215,816 | $10.8M | Add +70.2% |
| TRIP Tripadvisor Inc. | 0.38% | 389,194 | $10.8M | Add +384.5% |
| SMTC Semtech Corp. | 0.37% | 383,209 | $10.5M | New |
| XENE Xenon Pharmaceuticals Inc. | 0.37% | 244,080 | $10.5M | Reduce -19.3% |
| SSYS Stratasys Ltd. | 0.37% | 899,735 | $10.5M | Reduce -11.4% |
| PTC PTC Inc. | 0.37% | 55,079 | $10.4M | Reduce -1.6% |
| PRFT Perficient Inc. | 0.36% | 182,957 | $10.3M | Reduce -23.4% |
| ALTG Alta Equipment Group Inc. | 0.35% | 775,553 | $10.0M | Reduce -24.8% |
| BLUEBIRD BIO INC | 0.35% | 7,711,669 | $9.9M | Reduce -4.5% |
| KROS Keros Therapeutics Inc. | 0.35% | 149,013 | $9.9M | New |
| TMDX Transmedics Group Inc. | 0.35% | 133,387 | $9.9M | Reduce -9.1% |
| SNDX Syndax Pharmaceuticals Inc. | 0.33% | 396,878 | $9.4M | Add +23.7% |
| HCAT Health Catalyst Inc. | 0.33% | 1,253,704 | $9.4M | Add +1.6% |
| WNS WNS Holdings Ltd. filed as WNS HLDGS LTD | 0.32% | 178,309 | $9.0M | Reduce -1.3% |
| POWI Power Integrations Inc. | 0.31% | 121,834 | $8.7M | Add +7.8% |
| FROG Jfrog Ltd. | 0.30% | 195,105 | $8.6M | Reduce -0.4% |
| BOOT Boot Barn Holdings Inc. | 0.30% | 89,494 | $8.5M | Add +23.3% |
| VRNS Varonis Systems Inc. | 0.30% | 179,310 | $8.5M | Add +1.5% |
| QLYS Qualys Inc. | 0.29% | 50,047 | $8.4M | Add +17.8% |
| PRTA Prothena Corp. PLC | 0.29% | 333,920 | $8.3M | Reduce -19.9% |
| ONTO Onto Innovation Inc. | 0.29% | 45,186 | $8.2M | Reduce -22.4% |
| SWAV Shockwave Medical Inc. | 0.28% | 24,363 | $7.9M | Reduce -40.3% |
| HBIO Harvard Bioscience Inc. | 0.28% | 1,863,750 | $7.9M | Add +1.1% |
Portfolio Sells Q4 2023 → Q1 2024
| HUBS HubSpot Inc. | Reduce -70.2% | 0.43% | −0.82 |
| PCTY Paylocity Holding Corp. | Reduce -39.6% | 1.29% | −0.64 |
| WSC Willscot Holdings Corp. | Reduce -41.9% | 0.99% | −0.54 |
| WGHTQ WW International Inc. | Sold out | 0.00% | −0.52 |
| KRNT Kornit Digital Ltd. | Reduce -35.8% | 0.91% | −0.50 |
| FSLR First Solar Inc. | Reduce -85.9% | 0.08% | −0.49 |
| TCBI Texas Capital Bancshares Inc. | Reduce -43.3% | 0.66% | −0.49 |
| GLOB Globant SA | Reduce -20.1% | 1.25% | −0.48 |
| ENVX Enovix Corp. | Reduce -55.3% | 0.20% | −0.45 |
| GENI Genius Sports Ltd. | Reduce -12.7% | 2.38% | −0.39 |
| GDYN Grid Dynamics Holdings Inc. | Sold out | 0.00% | −0.39 |
| FVRR Fiverr International Ltd. | Sold out | 0.00% | −0.33 |
| MASS 908 Devices Inc. | Reduce -14.9% | 0.46% | −0.30 |
| EVH Evolent Health Inc. Class A | Reduce -13.7% | 2.88% | −0.28 |
| RH RH | Reduce -48.2% | 0.54% | −0.28 |
| CSTL Castle Biosciences Inc. | Reduce -24.9% | 1.27% | −0.28 |
| SMAR Smartsheet Inc. Class A | Reduce -2.5% | 1.37% | −0.27 |
| ETSY Etsy Inc. | Reduce -52.5% | 0.20% | −0.27 |
| PACB Pacific Biosciences of Calif | Sold out | 0.00% | −0.27 |
| WK Workiva Inc. | Reduce -8.1% | 1.15% | −0.26 |
| KNSL Kinsale Capital Group Inc. | Reduce -58.4% | 0.58% | −0.25 |
| DCGO Docgo Inc. | Sold out | 0.00% | −0.25 |
| DH Definitive Healthcare Corp. | Sold out | 0.00% | −0.24 |
| MXCT Maxcyte Inc. | Sold out | 0.00% | −0.22 |
| PRTA Prothena Corp. PLC | Reduce -19.9% | 0.29% | −0.21 |
| HLIT Harmonic Inc. | Sold out | 0.00% | −0.21 |
| LOVE The Lovesac Co. | Reduce -11.9% | 1.00% | −0.21 |
| RSKD Riskified Ltd. Class A | Reduce -67.3% | 0.14% | −0.21 |
| SSTI Soundthinking Inc. | Reduce -40.1% | 0.13% | −0.20 |
| GSHD Goosehead Insurance Inc. Class A | Reduce -88.4% | 0.02% | −0.20 |
| GTLS Chart Industries Inc. | Reduce -30.9% | 1.53% | −0.19 |
| VCYT Veracyte Inc. | Reduce -32.1% | 0.27% | −0.19 |
| LQDT Liquidity Services Inc. | Sold out | 0.00% | −0.18 |
| BFAM Bright Horizons Family Solut | Reduce -85.8% | 0.04% | −0.18 |
| PRFT Perficient Inc. | Reduce -23.4% | 0.36% | −0.16 |
| UDMY Udemy Inc. | Reduce -10.1% | 0.39% | −0.16 |
| SMCI Super Micro Computer Inc. | Sold out | 0.00% | −0.14 |
| PLRX Pliant Therapeutics Inc. | Reduce -9.0% | 0.55% | −0.14 |
| COUR Coursera Inc. | Reduce -15.3% | 0.25% | −0.13 |
| HDSN Hudson Technologies Inc. | Reduce -41.9% | 0.13% | −0.13 |
| ARRY Array Technologies Inc. | Reduce -4.8% | 1.13% | −0.13 |
| AXON Axon Enterprise Inc. | Reduce -25.1% | 3.24% | −0.12 |
| IMGN Immunogen Inc. | Sold out | 0.00% | −0.12 |
| SSYS Stratasys Ltd. | Reduce -11.4% | 0.37% | −0.11 |
| TXG 10X Genomics Inc. Class A | Reduce -3.3% | 0.24% | −0.11 |
| SPT Sprout Social Inc. Class A | Reduce -6.1% | 3.35% | −0.10 |
| VICR Vicor Corp. | Reduce -53.5% | 0.07% | −0.09 |
| CSIQ Canadian Solar Inc. | Reduce -23.7% | 0.15% | −0.09 |
| XENE Xenon Pharmaceuticals Inc. | Reduce -19.3% | 0.37% | −0.09 |
| PRO Pros Holdings Inc. | Reduce -11.3% | 0.69% | −0.09 |
Portfolio Buys Q4 2023 → Q1 2024
| INDI Indie Semiconductor Inc. Class A | Add +46.9% | 4.82% | +1.28 |
| VKTX Viking Therapeutics Inc. | New | 0.92% | +0.92 |
| ZETA Zeta Global Holdings Corp. Class A | Add +1.4% | 3.16% | +0.79 |
| VIVID SEATS INC | New | 0.75% | +0.75 |
| FOUR SHIFT4 Payments Inc. Class A | New | 0.71% | +0.71 |
| CRS Carpenter Technology | New | 0.70% | +0.70 |
| SIMO Silicon Motion Technol-ADR | New | 0.58% | +0.58 |
| COMP Compass Inc. Class A | Add +215.9% | 0.81% | +0.56 |
| VCTR Victory Capital Holding - A | Add +3.5% | 1.87% | +0.49 |
| P Everpure Inc. Class A | Add +20.0% | 1.02% | +0.47 |
| PHR Phreesia Inc. | Add +41.0% | 1.26% | +0.45 |
| LTH Life Time Group Holdings Inc. | Add +40.8% | 1.21% | +0.42 |
| SMTC Semtech Corp. | New | 0.37% | +0.37 |
| KROS Keros Therapeutics Inc. | New | 0.35% | +0.35 |
| TRIP Tripadvisor Inc. | Add +384.5% | 0.38% | +0.32 |
| VERX Vertex Inc. Class A | Add +11.4% | 0.82% | +0.23 |
| KNF Knife River Corp. | New | 0.21% | +0.21 |
| RDDT Reddit Inc. Class A | New | 0.21% | +0.21 |
| BELFB Bel Fuse Inc. Class B | Add +219.3% | 0.24% | +0.16 |
| ALGM Allegro Microsystems Inc. | New | 0.15% | +0.15 |
| GH Guardant Health Inc. | New | 0.14% | +0.14 |
| MLTX Moonlake Immunotherapeutics | Add +70.2% | 0.38% | +0.13 |
| ITCI Intra-Cellular Therapies Inc. | New | 0.12% | +0.12 |
| BOOT Boot Barn Holdings Inc. | Add +23.3% | 0.30% | +0.12 |
| KVYO Klaviyo Inc. Class A | Add +76.0% | 0.27% | +0.11 |
| GWRE Guidewire Software Inc. | Add +5.8% | 0.68% | +0.11 |
| SG Sweetgreen Inc. Class A | New | 0.11% | +0.11 |
| DV Doubleverify Holdings Inc. | Add +6.8% | 1.33% | +0.10 |
| SAGE Sage Therapeutics Inc. | New | 0.10% | +0.10 |
| SNDX Syndax Pharmaceuticals Inc. | Add +23.7% | 0.33% | +0.10 |
| NXT Nextpower Inc. | New | 0.10% | +0.10 |
| PRSU Pursuit Attractions and Hosp | Add +35.3% | 0.24% | +0.09 |
| REAL BROKERAGE INC/THE | New | 0.09% | +0.09 |
| BPMC Blueprint Medicines Corp. | Add +7.0% | 0.60% | +0.09 |
| GO Grocery Outlet Holding Corp. | Add +21.9% | 0.23% | +0.07 |
| PDFS PDF Solutions Inc. | Add +28.9% | 0.21% | +0.06 |
| PTLO Portillo's Inc. Class A | Add +14.7% | 0.76% | +0.06 |
| RBC RBC Bearings Inc. | Add +5.2% | 0.98% | +0.06 |
| HNST The Honest Co. Inc. | New | 0.06% | +0.06 |
| SYM Symbotic Inc. | Add +340.3% | 0.07% | +0.05 |
| APLS Apellis Pharmaceuticals Inc. | Add +57.7% | 0.14% | +0.05 |
| FARO Faro Technologies Inc. | Add +31.8% | 0.21% | +0.05 |
| OSIS Osi Systems Inc. | Add +6.2% | 0.26% | +0.05 |
| RCUS Arcus Biosciences Inc. | Add +28.5% | 0.20% | +0.05 |
| DSGX The Descartes Systems Grp | Add +5.3% | 0.24% | +0.04 |
| CCOI Cogent Communications Holdin | Add +22.1% | 0.39% | +0.04 |
| ROG Rogers Corp. | Add +78.9% | 0.09% | +0.04 |
| VRNS Varonis Systems Inc. | Add +1.5% | 0.30% | +0.03 |
| ODD Oddity Tech Ltd. Class A | Add +4.3% | 0.93% | +0.03 |
| PWR Quanta Services Inc. | New | 0.03% | +0.03 |
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 |