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Latest GRANAHAN INVESTMENT MANAGEMENT INC/MA Stock Portfolio

$2.07Billion– No. of Holdings #149

GRANAHAN INVESTMENT MANAGEMENT INC/MA Performance:
2026 Q1: -4.93%YTD: -4.93%2025: 7.8%
Performance for 2026 Q1 is -4.93%, and YTD is -4.93%, and 2025 is 7.8%.

About GRANAHAN INVESTMENT MANAGEMENT INC/MA and 13F Hedge Fund Stock Holdings

On 2026-05-15, the fund reported it's updated stock portfolio. In the 13F Holdings report, Granahan Investment Management, LLC reported an equity portfolio of $2.1 Billions as of 31 Mar, 2026.

The top stock holdings of Granahan Investment Management, LLC are CRS, PRCH, FTAI. The fund has invested 4.6% of it's portfolio in CARPENTER TECHNOLOGY CORP and 4.4% of portfolio in PORCH GROUP INC.

The fund managers got completely rid off ODDITY TECH LTD, HUBSPOT INC (HUBS) and LUMENTUM HLDGS INC (LITE) stocks. They significantly reduced their stock positions in TRANSCAT INC (TRNS), AZENTA INC (AZTA) and TOAST INC (TOST). Granahan Investment Management, LLC opened new stock positions in FORGENT POWER SOLUTIONS INC, NLIGHT INC (LASR) and AEROVIRONMENT INC (AVAV). The fund showed a lot of confidence in some stocks as they added substantially to DAVE INC (DAVE), 908 DEVICES INC (MASS) and IRHYTHM HOLDINGS INC (IRTC).
GRANAHAN INVESTMENT MANAGEMENT INC/MA Equity Portfolio Value
Last Reported on: 15 May, 2026

GRANAHAN INVESTMENT MANAGEMENT INC/MA Annual Return Estimates Vs S&P 500

Our best estimate is that Granahan Investment Management, LLC made a return of -4.93% in the last quarter. In trailing 12 months, it's portfolio return was 14.83%.
  • Performance
  • S&P 500

New Buys

Ticker$ Bought
forgent power solutions inc60,620,600
york space systems inc21,451,900
nlight inc10,564,200
aerovironment inc7,456,720
ethos technologies inc6,485,250
callaway golf co5,870,130
radnet inc5,828,320
rogers corp3,527,830
New stocks bought by GRANAHAN INVESTMENT MANAGEMENT INC/MA

Additions

Ticker% Inc.
dave inc3,325
908 devices inc662
irhythm holdings inc567
cryoport inc474
chime finl inc285
arlo technologies inc245
genedx holdings corp212
arteris inc201
Additions to existing portfolio by GRANAHAN INVESTMENT MANAGEMENT INC/MA

Reductions

Ticker% Reduced
transcat inc-96.9
azenta inc-79.97
toast inc-61.52
zeta global holdings corp-60.86
phreesia inc-58.84
revolution medicines inc-57.08
united states antimony corp-54.45
global e online ltd-54.11
GRANAHAN INVESTMENT MANAGEMENT INC/MA reduced stake in above stock

Sold off

Ticker$ Sold
sunopta inc-10,148,500
oddity tech ltd-61,202,300
wealthfront corp-18,837,000
klaviyo inc-19,653,100
talkspace inc-2,111,450
certara inc-4,059,620
lenz therapeutics inc-6,897,600
shoals technologies group in-3,089,600
GRANAHAN INVESTMENT MANAGEMENT INC/MA got rid off the above stocks

Sector Distribution

Granahan Investment Management, LLC has about 24% of it's holdings in Others sector.

  • Others
  • Technology
  • Industrials
  • Healthcare
  • Consumer Cyclical
  • Financial Services
  • Communication Services
  • Basic Materials
Sector%
Others24
Technology22.9
Industrials19.1
Healthcare12.5
Consumer Cyclical8.8
Financial Services5.2
Communication Services1.8
1.6
Basic Materials1.4

Market Cap. Distribution

Granahan Investment Management, LLC has about 26.2% of it's portfolio invested in the large-cap and mega-cap stocks.

  • MID-CAP
  • LARGE-CAP
  • UNALLOCATED
  • SMALL-CAP
Category%
MID-CAP26.3
LARGE-CAP26.2
UNALLOCATED24.1
SMALL-CAP23.2

Stocks belong to which Index?

About 61.5% of the stocks held by Granahan Investment Management, LLC either belong to S&P 500 or RUSSELL 2000 index.

  • RUSSELL 2000
  • Others
  • S&P 500
Index%
RUSSELL 200059.2
Others38.5
S&P 5002.3
Top 5 Winners (%)%
RCAT
red cat hldgs inc
59.4 %
MOD
modine mfg co
55.8 %
UAMY
united states antimony corp
53.8 %
FIX
comfort sys usa inc
47.8 %
MLTX
moonlake immunotherapeutics
38.5 %
Top 5 Winners ($)$
MOD
modine mfg co
29.3 M
CRS
carpenter technology corp
20.1 M
FTAI
ftai aviation ltd
16.6 M
nextpower inc
13.5 M
KRUS
kura sushi usa inc
12.2 M
Top 5 Losers (%)%
OWLT
owlet inc
-62.9 %
beta bionics inc
-60.3 %
GENI
genius sports limited
-50.4 %
beta technologies inc
-47.5 %
netskope inc
-45.3 %
Top 5 Losers ($)$
GENI
genius sports limited
-43.6 M
PRCH
porch group inc
-23.8 M
PHR
phreesia inc
-14.5 M
APPS
digital turbine inc
-14.3 M
MGNI
magnite inc
-12.3 M

GRANAHAN INVESTMENT MANAGEMENT INC/MA Holdings Map

This heatmap illustrates the top 50 positions within the fund's portfolio.

Current Stock Holdings of GRANAHAN INVESTMENT MANAGEMENT INC/MA

Granahan Investment Management, LLC has 149 stocks in it's portfolio. About 33.7% of the portfolio is in top 10 stocks. GENI proved to be the most loss making stock for the portfolio. MOD was the most profitable stock for Granahan Investment Management, LLC last quarter.

Last Reported on: 15 May, 2026
TickerNamesorted ascending% PortfolioShares Held$ ValueType% ChangeOptions