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GIM

Granahan Investment Management Portfolio holdings

AUM $2.81B
1-Year Est. Return 83.9%
This Fund
S&P 500
This Quarter Est. Return
+55.9%
1 Year Est. Return
+83.9%
3 Year Est. Return
+265.3%
5 Year Est. Return
+244.2%
10 Year Est. Return
+3,555.61%
AUM
$2.81B
AUM Growth
+$739M
Cap. Flow
-$56M
Cap. Flow %
-2%
Top 10 Hldgs %
33.98%
Holding
171
New
22
Increased
67
Reduced
60
Closed
21

Top Buys

Rank Stock Value
1
SIMO icon
Silicon Motion
SIMO
+$58M
2
RGEN icon
Repligen
RGEN
+$30.1M
3
LGND icon
Ligand Pharmaceuticals
LGND
+$29M
4
GNRC icon
Generac Holdings
GNRC
+$27.5M
5
TWST icon
Twist Bioscience
TWST
+$20.5M

Top Sells

Rank Stock Value
1
CRS icon
Carpenter Technology
CRS
+$67.1M
2
FIX icon
Comfort Systems
FIX
+$35.9M
3
MOD icon
Modine Manufacturing
MOD
+$30.1M
4
SMTC icon
Semtech
SMTC
+$28.5M
5
RMBS icon
Rambus
RMBS
+$27.8M

Sector Composition

Rank Sector Weight
1 Technology 30.1%
2 Industrials 22.86%
3 Healthcare 17.24%
4 Financials 14.46%
5 Consumer Discretionary 9.43%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
PRCH icon
1
Porch Group
PRCH
$2.04B
$186M 6.64%
12,393,660
-281,327
-2% -$2.77M
SIMO icon
2
Silicon Motion
SIMO
$8.69B
$149M 5.29%
445,752
+250,500
+128% +$58M
FPS
3
Forgent Power Solutions
FPS
$8.15B
$101M 3.6%
1,807,608
-263,476
-13% -$12M
INDI icon
4
indie Semiconductor
INDI
$761M
$87.2M 3.11%
19,419,892
-863,947
-4% -$3.45M
VCTR icon
5
Victory Capital Holdings
VCTR
$7B
$85.3M 3.04%
1,015,343
-71,972
-7% -$5.79M
FTAI icon
6
FTAI Aviation
FTAI
$20.2B
$79.5M 2.83%
293,722
-46,595
-14% -$11.7M
MRX
7
Marex Group Limited Ordinary Shares
MRX
$5.63B
$76.4M 2.72%
1,254,283
+30,533
+2% +$1.68M
MOD icon
8
Modine Manufacturing
MOD
$10.3B
$70.4M 2.51%
263,572
-114,014
-30% -$30.1M
CRS icon
9
Carpenter Technology
CRS
$23.6B
$59.8M 2.13%
96,981
-142,488
-60% -$67.1M
NXT icon
10
Nextpower Inc. Common Stock
NXT
$12.8B
$59.1M 2.11%
495,938
+71,504
+17% +$8.82M
MGNI icon
11
Magnite
MGNI
$3.46B
$58.5M 2.09%
3,083,211
+529,798
+21% +$7.59M
AXON
12
Axon Enterprise
AXON
$41.9B
$54.3M 1.93%
96,829
+6,137
+7% +$2.57M
ONTO icon
13
Onto Innovation
ONTO
$13.2B
$53.6M 1.91%
141,568
-57,126
-29% -$16.2M
TTMI icon
14
TTM Technologies
TTMI
$13.2B
$50.4M 1.79%
269,330
-58,104
-18% -$9.37M
LGND icon
15
Ligand Pharmaceuticals
LGND
$5.69B
$46.5M 1.66%
147,231
+123,066
+509% +$29M
KRUS icon
16
Kura Sushi USA
KRUS
$537M
$46.2M 1.64%
801,969
+194,052
+32% +$10.6M
RGEN icon
17
Repligen
RGEN
$9.46B
$45.3M 1.62%
332,271
+245,318
+282% +$30.1M
APPS icon
18
Digital Turbine
APPS
$1.3B
$45.1M 1.61%
3,494,200
-3,618,151
-51% -$21.6M
LTH icon
19
Life Time Group Holdings
LTH
$9.66B
$44.3M 1.58%
1,083,587
-116,896
-10% -$3.71M
GENI icon
20
Genius Sports
GENI
$2B
$42.6M 1.52%
7,024,330
+1,640,568
+30% +$8.49M
CWST icon
21
Casella Waste Systems
CWST
$5.95B
$42.3M 1.51%
436,289
+186,027
+74% +$15.9M
QXO
22
QXO Inc
QXO
$13.9B
$40.2M 1.43%
2,327,662
+818,116
+54% +$15.2M
GNRC icon
23
Generac Holdings
GNRC
$11.1B
$36M 1.28%
122,872
+109,659
+830% +$27.5M
ZETA icon
24
Zeta Global
ZETA
$7.87B
$34.6M 1.23%
1,758,212
+733,725
+72% +$13.6M
KRNT icon
25
Kornit Digital
KRNT
$711M
$34.4M 1.23%
2,119,398
-179,073
-8% -$2.83M
1
2 3 4 5

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Granahan Investment Management's Q2 2026 Portfolio in Review

As of Q2 2026, Granahan Investment Management held 171 positions worth $2.81B, up 36% from $2.07B the previous quarter. Its ten largest holdings account for 34% of the portfolio.

Granahan Investment Management's Q2 2026 filing shows 22 new, 67 increased, 60 reduced and 21 closed positions. Its largest new stake was Twist Bioscience: 314,882 shares worth $32.4M. The largest sale was Carpenter Technology, an estimated $67.1M.

By sector, the portfolio is most concentrated in Technology at 30% of assets, up from 25% a quarter earlier, followed by Industrials and Healthcare.

  • Granahan Investment Management's largest Q2 2026 buy was Twist Bioscience: 314,882 shares worth $32.4M.
  • Granahan Investment Management added most to Silicon Motion in Q2 2026, an estimated $58M increase.
  • Granahan Investment Management's biggest Q2 2026 reduction was Carpenter Technology, cutting an estimated $67.1M.
  • Granahan Investment Management fully exited Comfort Systems in Q2 2026, selling an estimated $35.9M.
  • Granahan Investment Management's ten largest holdings make up 34% of its $2.81B portfolio in Q2 2026.
  • Granahan Investment Management opened 22 new positions and closed 21 in Q2 2026.
  • Granahan Investment Management's portfolio value rose 36% quarter-over-quarter to $2.81B.

Based on Granahan Investment Management's 13F filing for Q2 2026, filed 14 Aug 2026.