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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
MP icon
76
MP Materials
MP
$7.35B
$6.69M 0.32%
138,658
+10,241
+8% +$612K
LIND icon
77
Lindblad Expeditions
LIND
$1.76B
$6.67M 0.32%
385,383
+39,809
+12% +$707K
VECO icon
78
Veeco
VECO
$3.15B
$6.53M 0.32%
192,731
-30,547
-14% -$973K
WSC icon
79
WillScot Mobile Mini Holdings
WSC
$4.8B
$6.52M 0.32%
375,784
+77,932
+26% +$1.59M
CSGP icon
80
CoStar Group
CSGP
$11.3B
$6.5M 0.31%
161,047
+69,118
+75% +$3.6M
LIFE
81
Ethos Technologies Inc
LIFE
$1.17B
$6.49M 0.31%
+580,595
New +$6.86M
BETA
82
Beta Technologies Inc
BETA
$4.2B
$6.35M 0.31%
431,958
-6,393
-1% -$131K
EWTX icon
83
Edgewise Therapeutics
EWTX
$4.39B
$6.33M 0.31%
200,843
-31,452
-14% -$907K
APGE icon
84
Apogee Therapeutics
APGE
$10.2B
$6.32M 0.31%
75,086
-19,634
-21% -$1.43M
ZYME icon
85
Zymeworks
ZYME
$1.68B
$6.28M 0.3%
250,773
+26,365
+12% +$624K
WGS icon
86
GeneDx Holdings
WGS
$1.75B
$6.2M 0.3%
96,605
+65,695
+213% +$5.99M
FROG icon
87
JFrog
FROG
$9.71B
$6.11M 0.3%
130,103
-20,477
-14% -$1.01M
OWLT icon
88
Owlet
OWLT
$153M
$6.1M 0.3%
1,186,655
+499,906
+73% +$5.29M
XENE icon
89
Xenon Pharmaceuticals
XENE
$6.32B
$6.08M 0.29%
104,478
+11,700
+13% +$539K
IMVT icon
90
Immunovant
IMVT
$8.09B
$6.07M 0.29%
244,430
+14,242
+6% +$369K
CCOI icon
91
Cogent Communications
CCOI
$594M
$5.98M 0.29%
317,447
+100,422
+46% +$2.21M
NTNX icon
92
Nutanix
NTNX
$14.9B
$5.94M 0.29%
156,318
+4,317
+3% +$182K
CALY
93
Callaway Golf Company
CALY
$3.26B
$5.87M 0.28%
+422,920
New +$5.93M
LSCC icon
94
Lattice Semiconductor
LSCC
$17.6B
$5.85M 0.28%
63,054
+3,626
+6% +$325K
RDNT icon
95
RadNet
RDNT
$4.84B
$5.83M 0.28%
+104,282
New +$7.12M
NPKI
96
NPK International
NPKI
$1.21B
$5.82M 0.28%
401,658
-178,789
-31% -$2.48M
KNSL icon
97
Kinsale Capital Group
KNSL
$7.95B
$5.64M 0.27%
16,516
-3,170
-16% -$1.2M
CECO icon
98
Ceco Environmental
CECO
$4.42B
$5.52M 0.27%
92,728
-16,161
-15% -$1.04M
FN icon
99
Fabrinet
FN
$17.1B
$5.44M 0.26%
10,431
-1,446
-12% -$735K
XERS icon
100
Xeris Biopharma Holdings
XERS
$1.44B
$5.35M 0.26%
921,854
-301,550
-25% -$2M
2 3
4
5 6

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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.