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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
+0.46%
1 Year Est. Return
+56.45%
3 Year Est. Return
+154.74%
5 Year Est. Return
+144.99%
10 Year Est. Return
+2,522.93%
AUM
$2.34B
AUM Growth
-$107M
Cap. Flow
+$15.5M
Cap. Flow %
0.67%
Top 10 Hldgs %
29.8%
Holding
173
New
27
Increased
68
Reduced
62
Closed
16

Top Buys

Rank Stock Value
1
ZETA icon
Zeta Global
ZETA
+$25.7M
2
PRCH icon
Porch Group
PRCH
+$23.5M
3
PHR icon
Phreesia
PHR
+$21M
4
MOD icon
Modine Manufacturing
MOD
+$20.8M
5
STRL icon
Sterling Infrastructure
STRL
+$20.4M

Top Sells

Rank Stock Value
1
FIX icon
Comfort Systems
FIX
+$61.6M
2
SPSC icon
SPS Commerce
SPSC
+$34.2M
3
LEU icon
Centrus Energy
LEU
+$28.2M
4
EXAS
Exact Sciences
EXAS
+$18M
5
DSGX icon
Descartes Systems
DSGX
+$16.3M

Sector Composition

Rank Sector Weight
1 Technology 28.03%
2 Industrials 20.7%
3 Healthcare 14.38%
4 Financials 12.85%
5 Consumer Discretionary 10.1%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
FN icon
101
Fabrinet
FN
$19B
$5.41M 0.23%
+11,877
New +$5.17M
CYTK icon
102
Cytokinetics
CYTK
$10.7B
$5.22M 0.22%
82,121
+28,571
+53% +$1.78M
CORZ icon
103
Core Scientific
CORZ
$6.34B
$5.11M 0.22%
+350,956
New +$6.12M
BELFB
104
Bel Fuse Inc Class B
BELFB
$4.16B
$5.07M 0.22%
29,884
-57,426
-66% -$8.97M
AGYS icon
105
Agilysys
AGYS
$3.04B
$5.02M 0.22%
42,257
-51,967
-55% -$6.25M
MEC icon
106
Mayville Engineering Co
MEC
$577M
$5.01M 0.21%
267,762
-81,505
-23% -$1.33M
LIND icon
107
Lindblad Expeditions
LIND
$2.14B
$4.98M 0.21%
345,574
+157,777
+84% +$1.99M
ONT
108
Onterris Inc
ONT
$563M
$4.95M 0.21%
199,317
+108,577
+120% +$2.87M
LGND icon
109
Ligand Pharmaceuticals
LGND
$5.78B
$4.93M 0.21%
26,050
+1,088
+4% +$209K
RGTI icon
110
Rigetti Computing
RGTI
$5.98B
$4.9M 0.21%
+221,227
New +$7.21M
IONQ icon
111
IonQ
IONQ
$17.4B
$4.79M 0.21%
+106,722
New +$5.98M
ARLO icon
112
Arlo Technologies
ARLO
$1.61B
$4.73M 0.2%
338,382
+145,464
+75% +$2.29M
CCOI icon
113
Cogent Communications
CCOI
$515M
$4.68M 0.2%
217,025
+108,036
+99% +$3.19M
NVMI
114
Nova
NVMI
$12.5B
$4.53M 0.19%
13,783
-1,945
-12% -$625K
LSCC icon
115
Lattice Semiconductor
LSCC
$18.1B
$4.37M 0.19%
59,428
+24,590
+71% +$1.75M
GRAL
116
GRAIL Inc
GRAL
$3.34B
$4.32M 0.19%
+50,508
New +$4.36M
CHEF icon
117
Chefs' Warehouse
CHEF
$4.49B
$4.29M 0.18%
68,823
+63,692
+1,241% +$3.83M
OKTA icon
118
Okta
OKTA
$26.1B
$4.25M 0.18%
49,152
-56,251
-53% -$4.91M
SLAB icon
119
Silicon Laboratories
SLAB
$7.21B
$4.18M 0.18%
32,019
+22,263
+228% +$2.93M
XENE icon
120
Xenon Pharmaceuticals
XENE
$6.18B
$4.16M 0.18%
92,778
+5,308
+6% +$223K
CERT icon
121
Certara
CERT
$1.24B
$4.06M 0.17%
460,797
+34,798
+8% +$358K
RCUS icon
122
Arcus Biosciences
RCUS
$3.6B
$4.05M 0.17%
169,940
-285,656
-63% -$5.83M
NUVL
123
DELISTED
Nuvalent
NUVL
$4.04M 0.17%
+40,211
New +$3.96M
WGS icon
124
GeneDx Holdings
WGS
$2.4B
$4.02M 0.17%
30,910
+7,201
+30% +$988K
CRVL icon
125
CorVel
CRVL
$3.11B
$3.97M 0.17%
58,679
+23,528
+67% +$1.7M
3 4
5
6 7

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Granahan Investment Management's Q4 2025 Portfolio in Review

As of Q4 2025, Granahan Investment Management held 173 positions worth $2.34B, down 4.4% from $2.44B the previous quarter. Its ten largest holdings account for 30% of the portfolio.

Granahan Investment Management's Q4 2025 filing shows 27 new, 68 increased, 62 reduced and 16 closed positions. Its largest new stake was Sterling Infrastructure: 59,148 shares worth $18.1M. The largest sale was Comfort Systems, an estimated $61.6M.

By sector, the portfolio is most concentrated in Technology at 28% of assets, up from 27% a quarter earlier, followed by Industrials and Healthcare.

  • Granahan Investment Management's largest Q4 2025 buy was Sterling Infrastructure: 59,148 shares worth $18.1M.
  • Granahan Investment Management added most to Zeta Global in Q4 2025, an estimated $25.7M increase.
  • Granahan Investment Management's biggest Q4 2025 reduction was Comfort Systems, cutting an estimated $61.6M.
  • Granahan Investment Management fully exited Shift4 in Q4 2025, selling an estimated $15.2M.
  • Granahan Investment Management's ten largest holdings make up 30% of its $2.34B portfolio in Q4 2025.
  • Granahan Investment Management opened 27 new positions and closed 16 in Q4 2025.
  • Granahan Investment Management's portfolio value fell 4.4% quarter-over-quarter to $2.34B.

Based on Granahan Investment Management's 13F filing for Q4 2025, filed 17 Feb 2026.