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GIM

Granahan Investment Management Portfolio holdings

AUM $2.07B
1-Year Est. Return 56.45%
This Fund
S&P 500
This Quarter Est. Return
+2.6%
1 Year Est. Return
+56.45%
3 Year Est. Return
+154.74%
5 Year Est. Return
+144.99%
10 Year Est. Return
+2,452.87%
AUM
$2.07B
AUM Growth
-$268M
Cap. Flow
-$133M
Cap. Flow %
-6.44%
Top 10 Hldgs %
33.65%
Holding
174
New
17
Increased
66
Reduced
65
Closed
25

Top Buys

Rank Stock Value
1
FPS
Forgent Power Solutions
FPS
+$68.9M
2
YSS
York Space Systems
YSS
+$23.5M
3
QXO
QXO Inc
QXO
+$16.2M
4
SIBN icon
SI-BONE Inc
SIBN
+$13.4M
5
DAVE icon
Dave Inc
DAVE
+$12.3M

Top Sells

Rank Stock Value
1
ODD icon
ODDITY Tech
ODD
+$61.2M
2
ZETA icon
Zeta Global
ZETA
+$29.5M
3
GLBE icon
Global E Online
GLBE
+$22.7M
4
CLBT icon
Cellebrite
CLBT
+$19.9M
5
KVYO icon
Klaviyo
KVYO
+$19.7M

Sector Composition

Rank Sector Weight
1 Industrials 28.28%
2 Technology 24.87%
3 Healthcare 14.19%
4 Financials 14.1%
5 Consumer Discretionary 11.74%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
ONT
101
Onterris Inc
ONT
$710M
$5.29M 0.26%
241,787
+42,470
+21% +$1.02M
CRDO icon
102
Credo Technology Group
CRDO
$39.7B
$5.27M 0.25%
56,099
-35,671
-39% -$4.34M
TSEM icon
103
Tower Semiconductor
TSEM
$26.4B
$5.25M 0.25%
29,902
-26,893
-47% -$3.62M
BOOT icon
104
Boot Barn
BOOT
$4.55B
$5.19M 0.25%
35,455
-4,040
-10% -$733K
LGND icon
105
Ligand Pharmaceuticals
LGND
$6.02B
$4.82M 0.23%
24,165
-1,885
-7% -$373K
CYTK icon
106
Cytokinetics
CYTK
$11B
$4.78M 0.23%
72,464
-9,657
-12% -$614K
RGTI icon
107
Rigetti Computing
RGTI
$4.7B
$4.59M 0.22%
326,721
+105,494
+48% +$1.98M
NUVL
108
DELISTED
Nuvalent
NUVL
$4.41M 0.21%
43,003
+2,792
+7% +$285K
CRVL icon
109
CorVel
CRVL
$3.05B
$4.37M 0.21%
79,896
+21,217
+36% +$1.22M
MASS icon
110
908 Devices
MASS
$293M
$4.25M 0.21%
695,070
+603,929
+663% +$3.78M
IONQ icon
111
IonQ
IONQ
$12.3B
$4.21M 0.2%
146,012
+39,290
+37% +$1.51M
RVMD icon
112
Revolution Medicines
RVMD
$40.2B
$4.14M 0.2%
42,573
-56,621
-57% -$5.72M
MLTX icon
113
MoonLake Immunotherapeutics
MLTX
$1.59B
$4.11M 0.2%
220,600
+22,293
+11% +$369K
CORZ icon
114
Core Scientific
CORZ
$7.23B
$4.08M 0.2%
272,622
-78,334
-22% -$1.34M
ALKT icon
115
Alkami Technology
ALKT
$1.8B
$3.96M 0.19%
252,868
-12,398
-5% -$228K
DSGX icon
116
Descartes Systems
DSGX
$5.84B
$3.95M 0.19%
55,253
+22,016
+66% +$1.63M
TSHA icon
117
Taysha Gene Therapies
TSHA
$1.59B
$3.95M 0.19%
883,241
+179,270
+25% +$834K
SLNO
118
DELISTED
Soleno Therapeutics
SLNO
$3.84M 0.19%
114,825
-22,767
-17% -$893K
EYPT icon
119
EyePoint Inc
EYPT
$1.02B
$3.83M 0.19%
297,108
-69,567
-19% -$1.04M
ANAB icon
120
AnaptysBio
ANAB
$1.6B
$3.67M 0.18%
66,182
-59,673
-47% -$3.21M
ROG icon
121
Rogers Corp
ROG
$2.33B
$3.53M 0.17%
+32,869
New +$3.38M
NVMI
122
Nova
NVMI
$13.9B
$3.47M 0.17%
7,985
-5,798
-42% -$2.55M
CDNL
123
Cardinal Infrastructure Group
CDNL
$1.26B
$3.27M 0.16%
+82,464
New +$2.39M
OKTA icon
124
Okta
OKTA
$24.1B
$3.21M 0.16%
40,843
-8,309
-17% -$690K
VIAV icon
125
Viavi Solutions
VIAV
$9.75B
$3.19M 0.15%
+95,761
New +$2.53M
3 4
5
6 7

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Granahan Investment Management's Q1 2026 Portfolio in Review

As of Q1 2026, Granahan Investment Management held 174 positions worth $2.07B, down 11% from $2.34B the previous quarter. Its ten largest holdings account for 34% of the portfolio.

Granahan Investment Management withdrew a net $133M in Q1 2026, closing 25 positions and reducing 65 holdings. Its most notable exit was ODDITY Tech, an estimated $61.2M position sold in full.

By sector, the portfolio is most concentrated in Industrials at 28% of assets, up from 21% a quarter earlier, followed by Technology and Healthcare.

Against the trend, Granahan Investment Management opened a new position in Forgent Power Solutions worth $60.6M.

  • Granahan Investment Management's largest Q1 2026 buy was Forgent Power Solutions: 2,071,084 shares worth $60.6M.
  • Granahan Investment Management added most to QXO Inc in Q1 2026, an estimated $16.2M increase.
  • Granahan Investment Management's biggest Q1 2026 reduction was Zeta Global, cutting an estimated $29.5M.
  • Granahan Investment Management fully exited ODDITY Tech in Q1 2026, selling an estimated $61.2M.
  • Granahan Investment Management's ten largest holdings make up 34% of its $2.07B portfolio in Q1 2026.
  • Granahan Investment Management opened 17 new positions and closed 25 in Q1 2026.
  • Granahan Investment Management's portfolio value fell 11% quarter-over-quarter to $2.07B.

Based on Granahan Investment Management's 13F filing for Q1 2026, filed 15 May 2026.