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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
+35.82%
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
$1.59B
AUM Growth
+$279M
Cap. Flow
-$16.5M
Cap. Flow %
-1.03%
Top 10 Hldgs %
31.62%
Holding
147
New
38
Increased
47
Reduced
31
Closed
29

Top Buys

Rank Stock Value
1
AVAV icon
AeroVironment
AVAV
+$30.3M
2
POWL icon
Powell Industries
POWL
+$21.2M
3
CLS icon
Celestica
CLS
+$16.7M
4
GOOS
Canada Goose Holdings
GOOS
+$14.4M
5
METC icon
Ramaco Resources Class A
METC
+$13.6M

Top Sells

Rank Stock Value
1
LNTH icon
Lantheus
LNTH
+$53.8M
2
EBAY icon
eBay
EBAY
+$32.1M
3
SLM icon
SLM Corp
SLM
+$24.5M
4
TREE icon
LendingTree
TREE
+$22.1M
5
GTES icon
Gates Industrial Corporation Ltd.
GTES
+$21.6M

Sector Composition

Rank Sector Weight
1 Technology 26.68%
2 Industrials 15.71%
3 Consumer Discretionary 14.72%
4 Healthcare 13.98%
5 Financials 9.96%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
BELFB
76
Bel Fuse Inc Class B
BELFB
$4.21B
$6.11M 0.38%
62,526
-121,698
-66% -$9.18M
FN icon
77
Fabrinet
FN
$20.1B
$5.72M 0.36%
+19,416
New +$4.33M
SMWB icon
78
Similarweb
SMWB
$658M
$5.7M 0.36%
727,592
+357,401
+97% +$2.68M
BAND
79
Bandwidth Inc
BAND
$1.61B
$5.49M 0.34%
+345,571
New +$4.7M
WEAV icon
80
Weave Communications
WEAV
$423M
$5.4M 0.34%
648,765
-303,397
-32% -$2.94M
FLR icon
81
Fluor
FLR
$7.96B
$5.37M 0.34%
+104,810
New +$4.18M
ESTA icon
82
Establishment Labs
ESTA
$2.28B
$5.31M 0.33%
124,392
+23,563
+23% +$822K
BV icon
83
BrightView Holdings
BV
$1.07B
$5.1M 0.32%
306,576
-114,760
-27% -$1.72M
FIVN icon
84
FIVE9
FIVN
$2.54B
$4.97M 0.31%
187,711
+49,456
+36% +$1.29M
NTGR icon
85
NETGEAR
NTGR
$635M
$4.92M 0.31%
169,294
-113,798
-40% -$3.06M
SMCI icon
86
Super Micro Computer
SMCI
$20.1B
$4.83M 0.3%
98,548
-335,315
-77% -$12.9M
TSEM icon
87
Tower Semiconductor
TSEM
$28.5B
$4.75M 0.3%
+109,632
New +$4.21M
RL icon
88
Ralph Lauren
RL
$23.6B
$4.67M 0.29%
+17,029
New +$4.22M
RCKY icon
89
Rocky Brands
RCKY
$369M
$4.64M 0.29%
+209,186
New +$3.99M
SPWH icon
90
Sportsman's Warehouse
SPWH
$46M
$4.57M 0.29%
1,325,668
+1,088,334
+459% +$2.44M
GCT icon
91
GigaCloud Technology
GCT
$1.9B
$4.57M 0.29%
+230,903
New +$3.69M
TTAM
92
Titan America SA
TTAM
$2.95B
$4.49M 0.28%
+359,435
New +$4.76M
BXC icon
93
BlueLinx
BXC
$706M
$4.4M 0.28%
59,102
+34,709
+142% +$2.43M
CROX icon
94
Crocs
CROX
$6.55B
$4.33M 0.27%
42,750
-151,460
-78% -$15.4M
DOUG icon
95
Douglas Elliman
DOUG
$162M
$4.25M 0.27%
+1,831,991
New +$3.91M
SM icon
96
SM Energy
SM
$6.87B
$4.21M 0.26%
+170,194
New +$4.12M
DECK icon
97
Deckers Outdoor
DECK
$13.3B
$4.09M 0.26%
+39,681
New +$4.39M
FRPT icon
98
Freshpet
FRPT
$3.22B
$3.83M 0.24%
+56,299
New +$4.4M
PSN icon
99
Parsons
PSN
$5.08B
$3.71M 0.23%
+51,707
New +$3.42M
RRX icon
100
Regal Rexnord
RRX
$11.9B
$3.62M 0.23%
+24,943
New +$3.13M
2 3
4
5 6

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Portolan Capital Management's Q2 2025 Portfolio in Review

As of Q2 2025, Portolan Capital Management held 147 positions worth $1.59B, up 21% from $1.32B the previous quarter. Its ten largest holdings account for 32% of the portfolio.

Portolan Capital Management's Q2 2025 filing shows 38 new, 47 increased, 31 reduced and 29 closed positions. Its largest new stake was AeroVironment: 178,816 shares worth $51M. The largest sale was Lantheus, an estimated $53.8M.

By sector, the portfolio is most concentrated in Technology at 27% of assets, up from 19% a quarter earlier, followed by Industrials and Consumer Discretionary.

  • Portolan Capital Management's largest Q2 2025 buy was AeroVironment: 178,816 shares worth $51M.
  • Portolan Capital Management added most to Powell Industries in Q2 2025, an estimated $21.2M increase.
  • Portolan Capital Management's biggest Q2 2025 reduction was Lantheus, cutting an estimated $53.8M.
  • Portolan Capital Management fully exited eBay in Q2 2025, selling an estimated $32.1M.
  • Portolan Capital Management's ten largest holdings make up 32% of its $1.59B portfolio in Q2 2025.
  • Portolan Capital Management opened 38 new positions and closed 29 in Q2 2025.
  • Portolan Capital Management's portfolio value rose 21% quarter-over-quarter to $1.59B.

Based on Portolan Capital Management's 13F filing for Q2 2025, filed 13 Aug 2025.