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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
+20.03%
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
$1.49B
AUM Growth
+$107M
Cap. Flow
-$23.2M
Cap. Flow %
-1.56%
Top 10 Hldgs %
27.54%
Holding
166
New
37
Increased
47
Reduced
47
Closed
35

Top Buys

Rank Stock Value
1
SMTC icon
Semtech
SMTC
+$30.3M
2
SNAP icon
Snap
SNAP
+$26.6M
3
GTES icon
Gates Industrial Corporation Ltd.
GTES
+$22.5M
4
MOD icon
Modine Manufacturing
MOD
+$15.5M
5
GCO icon
Genesco
GCO
+$15.3M

Top Sells

Rank Stock Value
1
PHAT icon
Phathom Pharmaceuticals
PHAT
+$30.7M
2
GDS icon
GDS Holdings
GDS
+$26.6M
3
CDMO
Avid Bioservices, Inc. Common Stock
CDMO
+$18.8M
4
ZETA icon
Zeta Global
ZETA
+$18.7M
5
ACMR icon
ACM Research
ACMR
+$18.7M

Sector Composition

Rank Sector Weight
1 Technology 26.93%
2 Healthcare 16.82%
3 Consumer Discretionary 16.65%
4 Industrials 9.86%
5 Financials 9.53%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
GOOG icon
126
Alphabet (Google) Class C
GOOG
$4.32T
$965K 0.06%
5,067
-1,687
-25% -$298K
RH icon
127
RH
RH
$3.71B
$817K 0.06%
2,077
-13,403
-87% -$4.77M
SKY icon
128
Champion Homes
SKY
$5.14B
$793K 0.05%
8,996
-25,013
-74% -$2.42M
EXTR icon
129
Extreme Networks
EXTR
$3.15B
$551K 0.04%
32,917
-1,027,911
-97% -$16.6M
IESC icon
130
IES Holdings
IESC
$15.2B
$439K 0.03%
2,186
-37,205
-94% -$8.94M
DOUG icon
131
Douglas Elliman
DOUG
$162M
$239K 0.02%
143,000
-2,767,906
-95% -$5.32M
ACMR icon
132
ACM Research
ACMR
$5.79B
– –
-921,451
Closed -$18.7M
ALGN icon
133
Align Technology
ALGN
$12.3B
– –
-60,386
Closed -$15.4M
ALT icon
134
Altimmune
ALT
$599M
– –
-60,976
Closed -$374K
ARCT icon
135
Arcturus Therapeutics
ARCT
$211M
– –
-129,144
Closed -$3M
AU icon
136
AngloGold Ashanti
AU
$48.7B
– –
-35,554
Closed -$947K
BIDU icon
137
Baidu
BIDU
$37.2B
– –
-132,066
Closed -$13.9M
BWXT icon
138
BWX Technologies
BWXT
$15.6B
– –
-24,632
Closed -$2.68M
COMP icon
139
Compass
COMP
$9.66B
– –
-2,287,336
Closed -$14M
CRMT icon
140
America's Car Mart
CRMT
$26.9M
– –
-76,264
Closed -$3.2M
DIBS icon
141
1stdibs.com
DIBS
$171M
– –
-707,652
Closed -$3.12M
GDS icon
142
GDS Holdings
GDS
$6.41B
– –
-1,302,533
Closed -$26.6M
GEHC icon
143
GE HealthCare
GEHC
$32.4B
– –
-136,625
Closed -$12.8M
HDSN
144
Hudson Technologies
HDSN
$235M
– –
-335,840
Closed -$2.8M
INSW icon
145
International Seaways
INSW
$4.57B
– –
-84,625
Closed -$4.36M
JAKK icon
146
Jakks Pacific
JAKK
$293M
– –
-109,203
Closed -$2.79M
LMB icon
147
Limbach Holdings
LMB
$581M
– –
-123,354
Closed -$9.35M
MDU icon
148
MDU Resources
MDU
$4.32B
– –
-803,745
Closed -$12.2M
MGPI icon
149
MGP Ingredients
MGPI
$375M
– –
-81,400
Closed -$6.78M
MIR icon
150
Mirion Technologies
MIR
$3.91B
– –
-236,975
Closed -$2.62M
3 4 5
6
7

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Portolan Capital Management's Q4 2024 Portfolio in Review

As of Q4 2024, Portolan Capital Management held 166 positions worth $1.49B, up 7.8% from $1.38B the previous quarter. Its ten largest holdings account for 28% of the portfolio.

Portolan Capital Management's Q4 2024 filing shows 37 new, 47 increased, 47 reduced and 35 closed positions. Its largest new stake was Snap: 2,362,784 shares worth $25.4M. The largest sale was Phathom Pharmaceuticals, an estimated $30.7M.

By sector, the portfolio is most concentrated in Technology at 27% of assets, up from 26% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • Portolan Capital Management's largest Q4 2024 buy was Snap: 2,362,784 shares worth $25.4M.
  • Portolan Capital Management added most to Semtech in Q4 2024, an estimated $30.3M increase.
  • Portolan Capital Management's biggest Q4 2024 reduction was Avid Bioservices, Inc. Common Stock, cutting an estimated $18.8M.
  • Portolan Capital Management fully exited Phathom Pharmaceuticals in Q4 2024, selling an estimated $30.7M.
  • Portolan Capital Management's ten largest holdings make up 28% of its $1.49B portfolio in Q4 2024.
  • Portolan Capital Management opened 37 new positions and closed 35 in Q4 2024.
  • Portolan Capital Management's portfolio value rose 7.8% quarter-over-quarter to $1.49B.

Based on Portolan Capital Management's 13F filing for Q4 2024, filed 13 Feb 2025.