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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
CLS icon
1
Celestica
CLS
$35.1B
$85.8M 5.38%
549,593
+156,673
+40% +$16.7M
KTOS icon
2
Kratos Defense & Security Solutions
KTOS
$8.88B
$61.7M 3.87%
1,328,423
-132,307
-9% -$4.79M
ELF icon
3
e.l.f. Beauty
ELF
$4.56B
$58.1M 3.64%
466,838
+71,586
+18% +$6.11M
AVAV icon
4
AeroVironment
AVAV
$7.57B
$51M 3.19%
+178,816
New +$30.3M
MOD icon
5
Modine Manufacturing
MOD
$12.8B
$48.5M 3.04%
492,316
-1,259
-0.3% -$112K
TTMI icon
6
TTM Technologies
TTMI
$13.6B
$45.9M 2.88%
1,124,157
+102,860
+10% +$2.84M
FOUR icon
7
Shift4
FOUR
$3.84B
$43.1M 2.7%
435,175
+28,676
+7% +$2.5M
GENI icon
8
Genius Sports
GENI
$1.73B
$42.5M 2.66%
4,086,364
-194,891
-5% -$1.95M
POWL icon
9
Powell Industries
POWL
$8.46B
$35.9M 2.25%
511,674
+352,002
+220% +$21.2M
DBRG icon
10
DigitalBridge
DBRG
$2.94B
$31.9M 2%
3,082,160
+815,508
+36% +$7.78M
HNST icon
11
The Honest Company
HNST
$417M
$31.6M 1.98%
6,217,353
+698,147
+13% +$3.35M
CSTL icon
12
Castle Biosciences
CSTL
$749M
$30.4M 1.91%
1,489,572
+224,349
+18% +$4.15M
PRCH icon
13
Porch Group
PRCH
$1.3B
$28.8M 1.81%
2,442,843
-849,433
-26% -$7.3M
VPG icon
14
Vishay Precision Group
VPG
$1.39B
$27.8M 1.75%
990,439
+169,466
+21% +$4.17M
IIIV icon
15
i3 Verticals
IIIV
$395M
$26.4M 1.66%
961,615
+172,459
+22% +$4.32M
LUXE
16
LuxExperience B.V.
LUXE
$1.1B
$24.3M 1.52%
3,060,537
+431,809
+16% +$3.59M
QTRX icon
17
Quanterix
QTRX
$173M
$24.2M 1.52%
3,633,622
+670,225
+23% +$3.74M
FLEX icon
18
Flex
FLEX
$43.4B
$24M 1.5%
480,604
+199,696
+71% +$7.78M
SLM icon
19
SLM Corp
SLM
$4.57B
$23.3M 1.46%
710,291
-801,983
-53% -$24.5M
DKNG icon
20
DraftKings
DKNG
$11.4B
$21M 1.32%
490,547
-1,875
-0.4% -$67.2K
LNTH icon
21
Lantheus
LNTH
$6.82B
$20.8M 1.31%
254,477
-612,832
-71% -$53.8M
WRBY icon
22
Warby Parker
WRBY
$3.01B
$20.8M 1.31%
949,277
+681,602
+255% +$12.6M
PBPB
23
DELISTED
Potbelly
PBPB
$20.4M 1.28%
1,667,702
+391,090
+31% +$3.84M
ZETA icon
24
Zeta Global
ZETA
$4.77B
$20.4M 1.28%
1,315,690
+573,838
+77% +$7.62M
RDNT icon
25
RadNet
RDNT
$4.84B
$19.4M 1.22%
341,355
-137,051
-29% -$7.53M
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.