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Portolan Capital Management Portfolio holdings

AUM $2.67B
1-Year Est. Return 169.09%
This Fund
S&P 500
This Quarter Est. Return
+69.41%
1 Year Est. Return
+169.09%
3 Year Est. Return
+737.83%
5 Year Est. Return
+1,497.12%
10 Year Est. Return
+21,256.61%
AUM
$2.67B
AUM Growth
+$792M
Cap. Flow
+$21.4M
Cap. Flow %
0.8%
Top 10 Hldgs %
29.02%
Holding
180
New
36
Increased
49
Reduced
59
Closed
32

Top Buys

Rank Stock Value
1
VIRT icon
Virtu Financial
VIRT
+$48.9M
2
FOUR icon
Shift4
FOUR
+$38.9M
3
QLYS icon
Qualys
QLYS
+$28.6M
4
SRAD icon
Sportradar
SRAD
+$26.5M
5
PENG
Penguin Solutions Inc
PENG
+$24.8M

Top Sells

Rank Stock Value
1
PBF icon
PBF Energy
PBF
+$38.1M
2
TTMI icon
TTM Technologies
TTMI
+$35.4M
3
CRGY icon
Crescent Energy
CRGY
+$35.1M
4
BIDU icon
Baidu
BIDU
+$33.5M
5
FN icon
Fabrinet
FN
+$31.2M

Sector Composition

Rank Sector Weight
1 Technology 44.68%
2 Consumer Discretionary 12.13%
3 Industrials 12.05%
4 Healthcare 11.19%
5 Financials 9.77%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
MBLY icon
101
Mobileye
MBLY
$7.28B
$6.98M 0.26%
721,338
+43,203
+6% +$385K
WLDN icon
102
Willdan Group
WLDN
$1.31B
$6.68M 0.25%
84,394
-9,570
-10% -$815K
HNST icon
103
The Honest Company
HNST
$638M
$6.37M 0.24%
1,740,146
-1,305,688
-43% -$4.4M
MTRN icon
104
Materion
MTRN
$5.09B
$6.2M 0.23%
+20,860
New +$4.37M
TTAM
105
Titan America SA
TTAM
$2.85B
$5.98M 0.22%
+320,509
New +$5.27M
GLBE icon
106
Global E Online
GLBE
$6.44B
$5.96M 0.22%
+171,521
New +$5.43M
META icon
107
Meta Platforms (Facebook)
META
$1.57T
$5.72M 0.21%
10,155
-106
-1% -$64.8K
CELH icon
108
Celsius Holdings
CELH
$7.76B
$5.71M 0.21%
194,851
+30,254
+18% +$954K
REAL icon
109
The RealReal
REAL
$1.2B
$5.64M 0.21%
+478,194
New +$5.1M
ELF icon
110
e.l.f. Beauty
ELF
$6.47B
$5.62M 0.21%
75,954
-60,753
-44% -$3.69M
TMDX icon
111
Transmedics
TMDX
$3.12B
$5.47M 0.2%
82,354
+71,666
+671% +$6.07M
RDVT icon
112
Red Violet
RDVT
$1.22B
$5.36M 0.2%
+84,135
New +$3.98M
DHT icon
113
DHT Holdings
DHT
$3.36B
$5.21M 0.19%
314,928
-776,860
-71% -$13.9M
EVLV icon
114
Evolv Technologies
EVLV
$906M
$5.19M 0.19%
894,478
-901,210
-50% -$5.65M
PRCT icon
115
Procept Biorobotics
PRCT
$1.3B
$5.13M 0.19%
227,010
-24,706
-10% -$619K
TKR icon
116
Timken Company
TKR
$8.53B
$5.07M 0.19%
+34,861
New +$4.19M
LITE icon
117
Lumentum
LITE
$79B
$5M 0.19%
5,822
– –
GNRC icon
118
Generac Holdings
GNRC
$11.1B
$4.93M 0.18%
+16,852
New +$4.22M
BC icon
119
Brunswick
BC
$4.82B
$4.82M 0.18%
+57,175
New +$4.58M
EQPT
120
EquipmentShare.com Inc
EQPT
$4.95B
$4.54M 0.17%
+231,126
New +$4.95M
CGNT icon
121
Cognyte Software
CGNT
$626M
$4.39M 0.16%
+500,140
New +$4.74M
NOVT icon
122
Novanta
NOVT
$5.61B
$4.38M 0.16%
26,972
-10,535
-28% -$1.52M
DOUG icon
123
Douglas Elliman
DOUG
$165M
$4.25M 0.16%
2,399,364
-269,666
-10% -$483K
BOBS
124
Bobs Discount Furniture
BOBS
$2.31B
$3.95M 0.15%
+249,906
New +$3.1M
ECG
125
Everus Construction Group
ECG
$5.99B
$3.91M 0.15%
23,568
+14,843
+170% +$2.17M
3 4
5
6 7

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Portolan Capital Management's Q2 2026 Portfolio in Review

As of Q2 2026, Portolan Capital Management held 180 positions worth $2.67B, up 42% from $1.88B the previous quarter. Its ten largest holdings account for 29% of the portfolio.

Portolan Capital Management's Q2 2026 filing shows 36 new, 49 increased, 59 reduced and 32 closed positions. Its largest new stake was Sportradar: 1,819,949 shares worth $27.2M. The largest sale was PBF Energy, an estimated $38.1M.

By sector, the portfolio is most concentrated in Technology at 45% of assets, up from 34% a quarter earlier, followed by Consumer Discretionary and Industrials.

  • Portolan Capital Management's largest Q2 2026 buy was Sportradar: 1,819,949 shares worth $27.2M.
  • Portolan Capital Management added most to Virtu Financial in Q2 2026, an estimated $48.9M increase.
  • Portolan Capital Management's biggest Q2 2026 reduction was TTM Technologies, cutting an estimated $35.4M.
  • Portolan Capital Management fully exited PBF Energy in Q2 2026, selling an estimated $38.1M.
  • Portolan Capital Management's ten largest holdings make up 29% of its $2.67B portfolio in Q2 2026.
  • Portolan Capital Management opened 36 new positions and closed 32 in Q2 2026.
  • Portolan Capital Management's portfolio value rose 42% quarter-over-quarter to $2.67B.

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