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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
(+1%)
Cap. Flow
-$10.9M
Cap. Flow
% of AUM
-0.58%
Top 10 Holdings %
Top 10 Hldgs %
26.36%
Holding
176
New
57
Increased
34
Reduced
55
Closed
21
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Akamai
AKAM
|
+$43.1M |
| 2 |
Baidu
BIDU
|
+$32.2M |
| 3 |
First American
FAF
|
+$20.1M |
| 4 |
Shift4
FOUR
|
+$19.7M |
| 5 |
Real Brokerage
REAX
|
+$19.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
DigitalBridge
DBRG
|
+$55.8M |
| 2 |
e.l.f. Beauty
ELF
|
+$29.1M |
| 3 |
Kratos Defense & Security Solutions
KTOS
|
+$24.7M |
| 4 |
Celestica
CLS
|
+$23.9M |
| 5 |
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 | |
|---|---|---|---|---|---|---|
151
Claros Mortgage Trust
CMTG
$274M
| $366K | 0.02% |
+119,700
| New | +$391K |
|
152
Weave Communications
WEAV
$423M
| $361K | 0.02% |
+47,600
| New | +$316K |
|
153
Lincoln Educational Services
LINC
$1.3B
| $338K | 0.02% |
14,007
-305,871
| -96% | -$6.67M |
|
154
Crescent Energy
CRGY
$3.82B
| $335K | 0.02% |
+39,900
| New | +$350K |
|
155
Harvard Bioscience
HBIO
$29.2M
| $274K | 0.01% |
+40,965
| New | +$243K |
|
156
Ameresco
AMRC
$1.36B
| – | – |
-174,903
| Closed | -$5.87M |
|
157
BlackSky Technology
BKSY
$1.19B
| – | – |
-389,802
| Closed | -$7.85M |
|
158
BlueLinx
BXC
$706M
| – | – |
-6,700
| Closed | -$490K |
|
159
Celsius Holdings
CELH
$7.03B
| – | – |
-164,031
| Closed | -$9.43M |
|
160
Custom Truck One Source
CTOS
$2.37B
| – | – |
-649,076
| Closed | -$4.17M |
|
161
Crane NXT
CXT
$3.07B
| – | – |
-131,989
| Closed | -$8.85M |
|
162
Generac Holdings
GNRC
$12.5B
| – | – |
-45,031
| Closed | -$7.54M |
|
163
Levi Strauss
LEVI
$9.39B
| – | – |
-214,221
| Closed | -$4.99M |
|
164
Lockheed Martin
LMT
$136B
| – | – |
-12,506
| Closed | -$6.24M |
|
165
Onto Innovation
ONTO
$15.3B
| – | – |
-44,564
| Closed | -$5.76M |
|
166
PROG Holdings
PRG
$1.71B
| – | – |
-150,161
| Closed | -$4.86M |
|
167
Rocky Brands
RCKY
$369M
| – | – |
-128,307
| Closed | -$3.82M |
|
168
SiTime
SITM
$21.8B
| – | – |
-15,503
| Closed | -$4.67M |
|
169
Sportsman's Warehouse
SPWH
$46M
| – | – |
-303,800
| Closed | -$842K |
|
170
Sportradar
SRAD
$3.85B
| – | – |
-131,810
| Closed | -$3.55M |
|
171
WisdomTree
WT
$3.22B
| – | – |
-70,782
| Closed | -$984K |
|
172
Wolverine World Wide
WWW
$1.55B
| – | – |
-796,627
| Closed | -$21.9M |
|
|
PSIX
173
Power Solutions International
PSIX
$942M
| – | – |
-195,804
| Closed | -$19.2M |
|
|
TIC
174
TIC Solutions Inc
TIC
$2.2B
| – | – |
-472,954
| Closed | -$6.3M |
|
|
WYFI
175
WhiteFiber Inc
WYFI
$951M
| – | – |
-160,669
| Closed | -$4.37M |
|
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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.