1y return+32.3%S&P 500 +20.9%
3y return+51.5%S&P 500 +68.5%
5y return−0.9%S&P 500 +74.5%
10y return+396.0%S&P 500 +256.5%
These returns are for its stock picks as disclosed on Form 13F: last quarter's holdings, valued at this quarter's prices. They miss trades within each quarter, short positions, options, bonds, cash and fees, so they aren't the returns its clients got.
$100 invested in its stock picks
Since June 30, 2016: $496 against $357 in the S&P 500.2
Granahan Investment Management, LLCS&P 500 (SPY)
Top holdings
At the end of June 30, 2026. Change is in shares since the quarter before.2
| Stock | Value | Share of portfolio | Change |
|---|---|---|---|
| PRCHPorch Group Inc | $186.4M | 6.6% | −2.2% |
| SIMOSilicon Motion Technology Co | $148.6M | 5.3% | +128.3% |
| FPSForgent Power Solutions Inc | $101.0M | 3.6% | −12.7% |
| INDIIndie Semiconductor Inc | $87.2M | 3.1% | −4.3% |
| VCTRVictory Cap Hldgs Inc Del | $85.3M | 3.0% | −6.6% |
| Ftai Aviation LtdCUSIP G3730V105 | $79.5M | 2.8% | −13.7% |
| Marex Group PLCCUSIP G5S37H101 | $76.4M | 2.7% | +2.5% |
| MODModine Mfg Co | $70.4M | 2.5% | −30.2% |
| CRSCarpenter Technology Corp | $59.8M | 2.1% | −59.5% |
| NXTNextpower Inc | $59.1M | 2.1% | +16.8% |
| MGNIMagnite Inc | $58.5M | 2.1% | +20.7% |
| AXONAxon Enterprise Inc | $54.3M | 1.9% | +6.8% |
| ONTOOnto Innovation Inc | $53.6M | 1.9% | −28.8% |
| TTMITtm Technologies Inc | $50.4M | 1.8% | −17.7% |
| LGNDLigand Pharmaceuticals Inc | $46.5M | 1.7% | +509.3% |
| KRUSKura Sushi Usa Inc | $46.2M | 1.6% | +31.9% |
| RGENRepligen Corp | $45.3M | 1.6% | +282.1% |
| APPSDigital Turbine Inc | $45.1M | 1.6% | −50.9% |
| LTHLife Time Group Holdings Inc | $44.3M | 1.6% | −9.7% |
| Genius Sports LimitedCUSIP G3934V109 | $42.6M | 1.5% | +30.5% |
| CWSTCasella Waste Sys Inc | $42.3M | 1.5% | +74.3% |
| QXOQxo Inc | $40.2M | 1.4% | +54.2% |
| GNRCGenerac Hldgs Inc | $36.0M | 1.3% | +829.9% |
| ZETAZeta Global Holdings Corp | $34.6M | 1.2% | +71.6% |
| Kornit Digital LtdCUSIP M6372Q113 | $34.4M | 1.2% | −7.8% |
Best picks still held
How each current holding has done since the quarter it first appeared in its filings (up to six years back).
| Stock | Held since | Return since | Now worth |
|---|---|---|---|
| ONTOOnto Innovation Inc | June 30, 2020 | +1011.8% | $53.6M |
| CRSCarpenter Technology Corp | March 31, 2024 | +763.7% | $59.8M |
| AXONAxon Enterprise Inc | June 30, 2020 | +471.3% | $54.3M |
| VCTRVictory Cap Hldgs Inc Del | June 30, 2020 | +389.0% | $85.3M |
| MTRNMaterion Corp | June 30, 2020 | +383.7% | $20.8M |
| RBCRbc Bearings Inc | June 30, 2020 | +380.5% | $21.9M |
| MODModine Mfg Co | December 31, 2023 | +347.3% | $70.4M |
| SIMOSilicon Motion Technology Co | June 30, 2025 | +343.4% | $148.6M |
| Jfrog LtdCUSIP M6191J100 | June 30, 2023 | +228.1% | $27.2M |
| NXTNextpower Inc | September 30, 2024 | +217.9% | $59.1M |
Sold off last quarter
- FIXComfort Sys Usa Inc was $35.9M
- SMTCSemtech Corp was $28.5M
- Sportradar Group AgCUSIP H8088L103 was $24.1M
- STRLSterling Infrastructure Inc was $14.0M
- COMPCompass Inc was $13.8M
- STEPStepstone Group Inc was $10.1M
- PHRPhreesia Inc was $8.3M
- CSGPCostar Group Inc was $6.5M
- LIFEEthos Technologies Inc was $6.5M
- WGSGenedx Holdings Corp was $6.2M
Quarter by quarter
| Quarter | Its picks | S&P 500 |
|---|---|---|
| June 30, 2026 | +39.5% | +14.8% |
| March 31, 2026 | −6.0% | −4.6% |
| December 31, 2025 | −4.4% | +2.4% |
| September 30, 2025 | +5.4% | +7.8% |
| June 30, 2025 | +22.4% | +10.5% |
| March 31, 2025 | −12.2% | −4.6% |
| December 31, 2024 | +2.7% | +2.1% |
| September 30, 2024 | +9.5% | +5.4% |
| June 30, 2024 | −6.4% | +4.0% |
| March 31, 2024 | +2.8% | +10.0% |
| December 31, 2023 | +11.2% | +11.2% |
| September 30, 2023 | −11.4% | −3.6% |
| June 30, 2023 | +4.0% | +8.3% |
| March 31, 2023 | +6.3% | +7.0% |
| December 31, 2022 | +2.5% | +7.1% |
| September 30, 2022 | +5.1% | −5.3% |
| June 30, 2022 | −27.1% | −16.5% |
| March 31, 2022 | −15.8% | −4.9% |
| December 31, 2021 | −9.6% | +10.7% |
| September 30, 2021 | −1.1% | +0.3% |
Sources
Every number on this page points here. Each one links to the public record.
- 1SEC EDGAR: Granahan Investment Management, LLC Form 13F filingshttps://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1026710&type=13F-HR&dateb=&owner=include&count=40CIK 1026710
- 2SEC: 13F for the quarter ended June 30, 2026https://www.sec.gov/Archives/edgar/data/1026710/000139834426014483/Filed August 14, 2026 · accession 0001398344-26-014483