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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
WLDN icon
51
Willdan Group
WLDN
$1.3B
$10.5M 0.66%
+168,546
New +$8.04M
ZGN icon
52
Zegna
ZGN
$4B
$10.1M 0.63%
1,183,986
+226,784
+24% +$1.83M
HII icon
53
Huntington Ingalls Industries
HII
$12.8B
$10M 0.63%
+41,501
New +$9.27M
VRT icon
54
Vertiv
VRT
$105B
$9.85M 0.62%
76,715
+68,481
+832% +$6.66M
SRAD icon
55
Sportradar
SRAD
$3.85B
$9.6M 0.6%
341,799
-96,221
-22% -$2.28M
LINC icon
56
Lincoln Educational Services
LINC
$1.3B
$9.09M 0.57%
+394,553
New +$7.91M
REAX icon
57
Real Brokerage
REAX
$466M
$8.96M 0.56%
1,985,922
+962,823
+94% +$4.14M
UTHR icon
58
United Therapeutics
UTHR
$23.1B
$8.84M 0.55%
30,763
-14,305
-32% -$4.28M
GPOR icon
59
Gulfport Energy Corp
GPOR
$2.88B
$8.73M 0.55%
43,376
+2,888
+7% +$538K
META icon
60
Meta Platforms (Facebook)
META
$1.51T
$8.65M 0.54%
11,715
-728
-6% -$450K
LOCO icon
61
El Pollo Loco
LOCO
$462M
$8.27M 0.52%
+751,012
New +$7.45M
RDDT icon
62
Reddit
RDDT
$31.1B
$8.21M 0.51%
54,517
+49,632
+1,016% +$5.63M
CADL icon
63
Candel Therapeutics
CADL
$776M
$8.21M 0.51%
1,621,728
+740,544
+84% +$3.81M
WT icon
64
WisdomTree
WT
$3.22B
$7.85M 0.49%
+682,368
New +$6.39M
PRIM icon
65
Primoris Services
PRIM
$4.45B
$7.75M 0.49%
99,449
+89,209
+871% +$6.05M
HZO icon
66
MarineMax
HZO
$788M
$7.74M 0.49%
307,988
-14,117
-4% -$313K
SG icon
67
Sweetgreen
SG
$642M
$7.68M 0.48%
516,409
+76,559
+17% +$1.26M
ACI icon
68
Albertsons Companies
ACI
$5.83B
$7.56M 0.47%
351,629
-357,947
-50% -$7.79M
HCAT icon
69
Health Catalyst
HCAT
$128M
$7.47M 0.47%
1,980,409
+663,330
+50% +$2.61M
LMT icon
70
Lockheed Martin
LMT
$136B
$7.4M 0.46%
+15,981
New +$7.48M
KMPR icon
71
Kemper
KMPR
$1.68B
$7.06M 0.44%
109,417
-177,140
-62% -$11M
PWP icon
72
Perella Weinberg Partners
PWP
$1.3B
$6.85M 0.43%
+352,886
New +$6.23M
GRAB icon
73
Grab
GRAB
$14.9B
$6.81M 0.43%
+1,354,131
New +$6.32M
AVPT icon
74
AvePoint
AVPT
$2.71B
$6.23M 0.39%
+322,743
New +$5.6M
MYGN icon
75
Myriad Genetics
MYGN
$312M
$6.18M 0.39%
1,163,400
+613,478
+112% +$3.62M
1 2
3
4 5

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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.