Granahan Investment Management

Granahan Investment Management Focused Growth Strategy

Jun 2026 → Sep 2026

Our archive holds 2 letters from this strategy, behind 7 investment theses and positions in 31 companies. Every quote below is copied verbatim from the letter it came from.

2 letters in a year — follow all of Granahan Investment Management for every strategy.

Performance

as of Sep 30, 2026 · net of fees · USD

  • YTD
    +12.4%
    index +10.7%
  • 1Y
    +0.9%
    index +12.1%
  • 5Y · /yr
    −1.1%
    index +4.7%
  • 10Y · /yr
    +16.8%
    index +9.9%

Index: Russell 2000 Growth Index

Disclaimer

These figures are copied from the manager’s latest letter, as of Sep 30, 2026. They were extracted automatically, have not been verified by HF Best Ideas and may contain errors. They cover a single share class, in the currency and fee basis stated above; other share classes and your own returns will differ. This is not investment advice, nor an offer to buy or sell any fund. Past performance does not predict future returns.

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What it bought and sold

  • TrimmedTTM TechnologiesSep 2026
    For example, we cut Forgent (FPS), TTM Technologies (TTMI) and Onto Innovation (ONTO), and exited Modine (MOD).
  • ExitedModineSep 2026
    For example, we cut Forgent (FPS), TTM Technologies (TTMI) and Onto Innovation (ONTO), and exited Modine (MOD).
  • we added to the position as we gained conviction in the company.
  • We cut the position meaningfully during the quarter, largely before the decline, as the expected return had compressed after the stock's run in the first half.
  • TrimmedZeta GlobalSep 2026
    Although we recently trimmed the position given the share price rise, ZETA remains a large holding.
  • TrimmedTwist BioscienceSep 2026
    Given the strong moves, we trimmed TWST and GRAL and started a new position in Cryoport (CYRX),
  • TrimmedPorch GroupSep 2026
    We slightly trimmed the position on strength, and Porch remains our largest holding.
  • New positionCryoportSep 2026
    and started a new position in Cryoport (CYRX), which provides temperature-controlled logistics and storage for cell and gene therapies and should benefit as those therapies expand.
  • AddedFigure TechnologySep 2026
    We added to AI-insulated businesses and underappreciated beneficiaries where we believed meaningful upside remained underpriced in such stocks as Zeta (ZETA), Figure Technology (FIGR), and Ligand Pharmaceuticals (LGND).
  • TrimmedOnto InnovationSep 2026
    For example, we cut Forgent (FPS), TTM Technologies (TTMI) and Onto Innovation (ONTO), and exited Modine (MOD).
  • TrimmedGRAILSep 2026
    Given the strong moves, we trimmed TWST and GRAL and started a new position in Cryoport (CYRX),
  • AddedSilicon MotionJun 2026
    Second, we shifted some capital to other AI beneficiaries where we believe meaningful upside remains underpriced (e.g., Silicon Motion (SIMO) and Generac (GNRC).
  • ExitedCredo TechnologyJun 2026
    We exited several positions including Credo Technology (CRDO), Semtech (SMTC), Nova Limited (NVMI), Universal Technical Institute (UTI) and Comfort Systems (FIX), entirely,
  • TrimmedTTM TechnologiesJun 2026
    We have cut the position to a below average size.
  • TrimmedOnto InnovationJun 2026
    and trimmed others, such as Modine (MOD), Forgent Power Solutions (FPS), Onto Innovation (ONTO), TTM Technologies (TTMI), and Carpenter Technology Corp (CRS).
  • New positionGRAILJun 2026
    These companies can largely be thought of as "picks and shovels" to the industry and include such names as Repligen (RGEN), Twist Bioscience (TWST), and GRAIL (GRAL).
  • New positionRepligenJun 2026
    These companies can largely be thought of as "picks and shovels" to the industry and include such names as Repligen (RGEN), Twist Bioscience (TWST), and GRAIL (GRAL).
  • ExitedSemtechJun 2026
    We exited several positions including Credo Technology (CRDO), Semtech (SMTC), Nova Limited (NVMI), Universal Technical Institute (UTI) and Comfort Systems (FIX), entirely,
  • TrimmedModineJun 2026
    and trimmed others, such as Modine (MOD), Forgent Power Solutions (FPS), Onto Innovation (ONTO), TTM Technologies (TTMI), and Carpenter Technology Corp (CRS).
  • ExitedComfort SystemsJun 2026
    We exited several positions including Credo Technology (CRDO), Semtech (SMTC), Nova Limited (NVMI), Universal Technical Institute (UTI) and Comfort Systems (FIX), entirely,
  • TrimmedPorch GroupJun 2026
    While we have trimmed our position, Porch ended the quarter as our largest holding.
  • AddedGeneracJun 2026
    Second, we shifted some capital to other AI beneficiaries where we believe meaningful upside remains underpriced (e.g., Silicon Motion (SIMO) and Generac (GNRC).
  • AddedKura SushiJun 2026
    We added to the stock on weakness and Kura remains an average-sized holding.
  • We exited several positions including Credo Technology (CRDO), Semtech (SMTC), Nova Limited (NVMI), Universal Technical Institute (UTI) and Comfort Systems (FIX), entirely,

Also held

Its investment theses

Every letter