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Portolan Capital Management Portfolio holdings

AUM $1.88B
1-Year Est. Return 115.74%
This Fund
S&P 500
This Quarter Est. Return
+8.02%
1 Year Est. Return
+115.74%
3 Year Est. Return
+581.85%
5 Year Est. Return
+1,047.01%
10 Year Est. Return
+13,266.68%
AUM
$1.87B
AUM Growth
+$18.4M
Cap. Flow
-$10.9M
Cap. Flow %
-0.58%
Top 10 Hldgs %
26.36%
Holding
176
New
57
Increased
34
Reduced
55
Closed
21

Top Buys

Rank Stock Value
1
AKAM icon
Akamai
AKAM
+$43.1M
2
BIDU icon
Baidu
BIDU
+$32.2M
3
FAF icon
First American
FAF
+$20.1M
4
FOUR icon
Shift4
FOUR
+$19.7M
5
REAX icon
Real Brokerage
REAX
+$19.4M

Top Sells

Rank Stock Value
1
DBRG icon
DigitalBridge
DBRG
+$55.8M
2
ELF icon
e.l.f. Beauty
ELF
+$29.1M
3
KTOS icon
Kratos Defense & Security Solutions
KTOS
+$24.7M
4
CLS icon
Celestica
CLS
+$23.9M
5
POWL icon
Powell Industries
POWL
+$23.3M

Sector Composition

Rank Sector Weight
1 Technology 39.09%
2 Healthcare 17.39%
3 Consumer Discretionary 11.39%
4 Communication Services 7.96%
5 Financials 7.32%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
WAT icon
76
Waters Corp
WAT
$39.9B
$8.5M 0.46%
+22,379
New +$8.23M
RDNT icon
77
RadNet
RDNT
$5.69B
$8.38M 0.45%
117,506
-109,163
-48% -$8.43M
WIX icon
78
WIX.com
WIX
$2.52B
$8.34M 0.45%
80,298
-15,511
-16% -$1.88M
STC icon
79
Stewart Information Services
STC
$2.08B
$8.27M 0.44%
117,708
+15,926
+16% +$1.15M
PRCT icon
80
Procept Biorobotics
PRCT
$1.17B
$8.03M 0.43%
+255,118
New +$8.46M
AAOI icon
81
Applied Optoelectronics
AAOI
$11.5B
$7.96M 0.43%
228,458
-317,761
-58% -$9.49M
LPRO
82
DELISTED
Open Lending Corp
LPRO
$7.34M 0.39%
4,736,630
+1,062,740
+29% +$1.89M
ZGN icon
83
Zegna
ZGN
$4B
$7.28M 0.39%
710,534
-658,642
-48% -$6.72M
WGS icon
84
GeneDx Holdings
WGS
$2.3B
$7.25M 0.39%
55,776
+11,728
+27% +$1.61M
NOK icon
85
Nokia
NOK
$52.3B
$6.96M 0.37%
+1,076,122
New +$6.67M
NXT icon
86
Nextpower Inc
NXT
$15.7B
$6.95M 0.37%
+79,789
New +$7.23M
ESTA icon
87
Establishment Labs
ESTA
$2.28B
$6.9M 0.37%
94,648
-60,448
-39% -$3.65M
QLYS icon
88
Qualys
QLYS
$6.35B
$6.89M 0.37%
+51,855
New +$7.13M
VNET
89
VNET Group
VNET
$2.09B
$6.83M 0.37%
806,800
+239,334
+42% +$2.22M
META icon
90
Meta Platforms (Facebook)
META
$1.51T
$6.81M 0.36%
10,318
-1,370
-12% -$915K
AMPL icon
91
Amplitude
AMPL
$1.41B
$6.49M 0.35%
+560,096
New +$5.89M
DKNG icon
92
DraftKings
DKNG
$11.9B
$6.33M 0.34%
183,778
-188,224
-51% -$6.19M
FEIM icon
93
Frequency Electronics
FEIM
$816M
$6.09M 0.33%
113,076
-90,751
-45% -$3.34M
DAN icon
94
Dana Inc
DAN
$3.06B
$6M 0.32%
+252,423
New +$5.34M
WLDN icon
95
Willdan Group
WLDN
$1.3B
$5.97M 0.32%
57,613
+40,269
+232% +$3.96M
NUS icon
96
Nu Skin
NUS
$267M
$5.74M 0.31%
596,724
– –
SG icon
97
Sweetgreen
SG
$642M
$5.73M 0.31%
848,085
+529,938
+167% +$3.64M
FORR icon
98
Forrester Research
FORR
$224M
$5.73M 0.31%
705,749
+191,877
+37% +$1.51M
DOUG icon
99
Douglas Elliman
DOUG
$162M
$5.58M 0.3%
2,353,950
– –
OWLT icon
100
Owlet
OWLT
$160M
$5.56M 0.3%
+343,543
New +$3.89M
2 3
4
5 6

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Portolan Capital Management's Q4 2025 Portfolio in Review

As of Q4 2025, Portolan Capital Management held 176 positions worth $1.87B, up 1% from $1.85B the previous quarter. Its ten largest holdings account for 26% of the portfolio.

Portolan Capital Management's Q4 2025 filing shows 57 new, 34 increased, 55 reduced and 21 closed positions. Its largest new stake was Akamai: 524,321 shares worth $45.7M. The largest sale was DigitalBridge, an estimated $55.8M.

By sector, the portfolio is most concentrated in Technology at 39% of assets, up from 36% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • Portolan Capital Management's largest Q4 2025 buy was Akamai: 524,321 shares worth $45.7M.
  • Portolan Capital Management added most to Baidu in Q4 2025, an estimated $32.2M increase.
  • Portolan Capital Management's biggest Q4 2025 reduction was DigitalBridge, cutting an estimated $55.8M.
  • Portolan Capital Management fully exited Wolverine World Wide in Q4 2025, selling an estimated $21.9M.
  • Portolan Capital Management's ten largest holdings make up 26% of its $1.87B portfolio in Q4 2025.
  • Portolan Capital Management opened 57 new positions and closed 21 in Q4 2025.
  • Portolan Capital Management's portfolio value rose 1% quarter-over-quarter to $1.87B.

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