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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
TLN
26
Talen Energy Corp
TLN
$16.7B
$19.1M 1.2%
65,591
+22,921
+54% +$5.44M
TPR icon
27
Tapestry
TPR
$32.8B
$19M 1.19%
216,711
-30,396
-12% -$2.3M
METC icon
28
Ramaco Resources Class A
METC
$649M
$18.6M 1.17%
+1,419,285
New +$13.6M
MAMA icon
29
Mama's Creations
MAMA
$833M
$18M 1.13%
2,165,550
+348,257
+19% +$2.51M
SMTC icon
30
Semtech
SMTC
$13B
$17.1M 1.07%
379,018
+309,711
+447% +$11M
GOOS
31
Canada Goose Holdings
GOOS
$856M
$16.6M 1.04%
+1,487,497
New +$14.4M
OPRA
32
Opera Ltd
OPRA
$1.79B
$16.6M 1.04%
876,440
-653,251
-43% -$11.2M
CLBT icon
33
Cellebrite
CLBT
$3.99B
$16.2M 1.02%
1,011,844
+22,852
+2% +$407K
DOMO icon
34
Domo
DOMO
$184M
$15.5M 0.97%
1,107,869
+523,592
+90% +$5.27M
GTES icon
35
Gates Industrial Corporation Ltd.
GTES
$7.15B
$15.2M 0.95%
658,829
-1,072,579
-62% -$21.6M
BIO icon
36
Bio-Rad Laboratories Class A
BIO
$9.42B
$15.2M 0.95%
62,784
+41,044
+189% +$9.7M
GDOT icon
37
Green Dot
GDOT
$745M
$15.1M 0.95%
1,401,128
+765,061
+120% +$6.91M
WGS icon
38
GeneDx Holdings
WGS
$2.3B
$15M 0.94%
+162,228
New +$12.7M
KRUS icon
39
Kura Sushi USA
KRUS
$593M
$14.8M 0.93%
172,081
-200,918
-54% -$13.2M
ALGN icon
40
Align Technology
ALGN
$12.3B
$12.8M 0.8%
+67,739
New +$12M
LHX icon
41
L3Harris
LHX
$53.4B
$12.4M 0.78%
+49,516
New +$11.4M
CDNA icon
42
CareDx
CDNA
$2.42B
$12.3M 0.77%
629,977
+218,294
+53% +$3.88M
VIRT icon
43
Virtu Financial
VIRT
$4.93B
$12.2M 0.77%
273,367
-115,477
-30% -$4.66M
PAYO icon
44
Payoneer
PAYO
$2.4B
$12M 0.75%
1,757,334
-486,214
-22% -$3.3M
AAOI icon
45
Applied Optoelectronics
AAOI
$10.9B
$11.7M 0.73%
+455,322
New +$7.37M
OPRT icon
46
Oportun Financial
OPRT
$372M
$11.6M 0.73%
1,619,470
+801,116
+98% +$4.81M
TGLS icon
47
Tecnoglass Holdings Inc.
TGLS
$1.96B
$11.6M 0.73%
149,816
+76,668
+105% +$5.95M
BOOT icon
48
Boot Barn
BOOT
$4.95B
$11.4M 0.71%
+74,942
New +$9.95M
ENVA icon
49
Enova International
ENVA
$6.29B
$10.9M 0.68%
97,931
-14,582
-13% -$1.39M
TTWO icon
50
Take-Two Interactive
TTWO
$46.1B
$10.6M 0.66%
43,660
+931
+2% +$210K
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.