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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
+8.02%
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
$1.87B
AUM Growth
+$18.4M
Cap. Flow
-$10.9M
Cap. Flow %
-0.58%
Top 10 Hldgs %
26.36%
Holding
176
New
57
Increased
34
Reduced
55
Closed
21

Top Buys

Rank Stock Value
1
AKAM icon
Akamai
AKAM
+$43.1M
2
BIDU icon
Baidu
BIDU
+$32.2M
3
FAF icon
First American
FAF
+$20.1M
4
FOUR icon
Shift4
FOUR
+$19.7M
5
REAX icon
Real Brokerage
REAX
+$19.4M

Top Sells

Rank Stock Value
1
DBRG icon
DigitalBridge
DBRG
+$55.8M
2
ELF icon
e.l.f. Beauty
ELF
+$29.1M
3
KTOS icon
Kratos Defense & Security Solutions
KTOS
+$24.7M
4
CLS icon
Celestica
CLS
+$23.9M
5
POWL icon
Powell Industries
POWL
+$23.3M

Sector Composition

Rank Sector Weight
1 Technology 39.09%
2 Healthcare 17.39%
3 Consumer Discretionary 11.39%
4 Communication Services 7.96%
5 Financials 7.32%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
VIRT icon
51
Virtu Financial
VIRT
$4.93B
$12.5M 0.67%
+376,283
New +$12.9M
HNST icon
52
The Honest Company
HNST
$586M
$12.4M 0.66%
4,804,206
-2,123,798
-31% -$6.51M
SNAP icon
53
Snap
SNAP
$9.01B
$12.1M 0.65%
+1,496,410
New +$11.8M
TGLS icon
54
Tecnoglass Holdings Inc.
TGLS
$1.96B
$12M 0.64%
238,852
+129,587
+119% +$7.07M
HZO icon
55
MarineMax
HZO
$788M
$11.8M 0.63%
487,426
+94,713
+24% +$2.34M
TMDX icon
56
Transmedics
TMDX
$2.91B
$11.8M 0.63%
96,893
+27,983
+41% +$3.51M
CNR
57
Core Natural Resources Inc
CNR
$4.45B
$11.5M 0.62%
+130,242
New +$11.1M
ACMR icon
58
ACM Research
ACMR
$5.79B
$11.3M 0.6%
285,506
-120,354
-30% -$4.48M
SEZL
59
Sezzle
SEZL
$3.97B
$10.7M 0.57%
+167,873
New +$11.4M
GH icon
60
Guardant Health
GH
$22.6B
$10.6M 0.57%
+104,088
New +$9.31M
PACK icon
61
Ranpak Holdings
PACK
$473M
$10.6M 0.57%
1,950,730
+1,635,274
+518% +$8.6M
BIO icon
62
Bio-Rad Laboratories Class A
BIO
$9.42B
$10.3M 0.55%
34,159
-12,281
-26% -$3.83M
DGII icon
63
Digi International
DGII
$3.1B
$10.3M 0.55%
+237,550
New +$9.51M
ZG icon
64
Zillow
ZG
$7.63B
$10.2M 0.55%
+150,068
New +$10.6M
RPAY icon
65
Repay Holdings
RPAY
$327M
$10.2M 0.55%
2,790,281
+607,356
+28% +$2.43M
METC icon
66
Ramaco Resources Class A
METC
$649M
$10.1M 0.54%
+561,718
New +$14.8M
SANM icon
67
Sanmina
SANM
$10.9B
$9.99M 0.54%
+66,589
New +$9.83M
KRUS icon
68
Kura Sushi USA
KRUS
$593M
$9.98M 0.53%
190,796
+23,388
+14% +$1.28M
XZO
69
Exzeo Group
XZO
$1.41B
$9.82M 0.53%
+405,014
New +$7.7M
DAVE icon
70
Dave Inc
DAVE
$4.06B
$9.74M 0.52%
+44,001
New +$9.46M
TTWO icon
71
Take-Two Interactive
TTWO
$46.1B
$9.65M 0.52%
37,687
-5,924
-14% -$1.48M
MEC icon
72
Mayville Engineering Co
MEC
$617M
$9.6M 0.51%
+512,762
New +$8.36M
CADL icon
73
Candel Therapeutics
CADL
$776M
$9.58M 0.51%
1,695,367
+311,225
+22% +$1.67M
OPRA
74
Opera Ltd
OPRA
$1.79B
$8.94M 0.48%
631,177
-492,908
-44% -$7.27M
RELY icon
75
Remitly
RELY
$5.14B
$8.67M 0.46%
+628,019
New +$9.12M
1 2
3
4 5

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Portolan Capital Management's Q4 2025 Portfolio in Review

As of Q4 2025, Portolan Capital Management held 176 positions worth $1.87B, up 1% from $1.85B the previous quarter. Its ten largest holdings account for 26% of the portfolio.

Portolan Capital Management's Q4 2025 filing shows 57 new, 34 increased, 55 reduced and 21 closed positions. Its largest new stake was Akamai: 524,321 shares worth $45.7M. The largest sale was DigitalBridge, an estimated $55.8M.

By sector, the portfolio is most concentrated in Technology at 39% of assets, up from 36% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • Portolan Capital Management's largest Q4 2025 buy was Akamai: 524,321 shares worth $45.7M.
  • Portolan Capital Management added most to Baidu in Q4 2025, an estimated $32.2M increase.
  • Portolan Capital Management's biggest Q4 2025 reduction was DigitalBridge, cutting an estimated $55.8M.
  • Portolan Capital Management fully exited Wolverine World Wide in Q4 2025, selling an estimated $21.9M.
  • Portolan Capital Management's ten largest holdings make up 26% of its $1.87B portfolio in Q4 2025.
  • Portolan Capital Management opened 57 new positions and closed 21 in Q4 2025.
  • Portolan Capital Management's portfolio value rose 1% quarter-over-quarter to $1.87B.

Based on Portolan Capital Management's 13F filing for Q4 2025, filed 17 Feb 2026.