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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
+14.56%
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
$1.88B
AUM Growth
+$12.5M
Cap. Flow
-$57.3M
Cap. Flow %
-3.05%
Top 10 Hldgs %
27.97%
Holding
185
New
30
Increased
49
Reduced
61
Closed
41

Top Buys

Rank Stock Value
1
VIRT icon
Virtu Financial
VIRT
+$32.5M
2
PARR icon
Par Pacific Holdings
PARR
+$31.1M
3
PBF icon
PBF Energy
PBF
+$30M
4
CRGY icon
Crescent Energy
CRGY
+$26.8M
5
FN icon
Fabrinet
FN
+$22.3M

Top Sells

Rank Stock Value
1
TTMI icon
TTM Technologies
TTMI
+$39.9M
2
MOD icon
Modine Manufacturing
MOD
+$23.3M
3
FSLR icon
First Solar
FSLR
+$20.6M
4
LASR icon
nLIGHT
LASR
+$19.8M
5
FAF icon
First American
FAF
+$19.7M

Sector Composition

Rank Sector Weight
1 Technology 34.42%
2 Consumer Discretionary 13.66%
3 Industrials 12.34%
4 Healthcare 11.94%
5 Energy 9.75%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
BIIB icon
26
Biogen
BIIB
$30B
$21.7M 1.16%
118,481
+33,491
+39% +$6.17M
KRUS icon
27
Kura Sushi USA
KRUS
$539M
$21M 1.12%
301,212
+110,416
+58% +$7.41M
QLYS icon
28
Qualys
QLYS
$5.06B
$21M 1.12%
239,028
+187,173
+361% +$20.7M
JBL icon
29
Jabil
JBL
$33.4B
$20.5M 1.09%
77,197
+6,532
+9% +$1.65M
CRCL
30
Circle Internet Group
CRCL
$17.7B
$20.4M 1.09%
+213,796
New +$18.1M
DHT icon
31
DHT Holdings
DHT
$2.97B
$19.9M 1.06%
+1,091,788
New +$17.4M
NOK icon
32
Nokia
NOK
$59.3B
$19.2M 1.02%
2,393,970
+1,317,848
+122% +$9.68M
ALNT icon
33
Allient
ALNT
$1.47B
$19.1M 1.02%
323,453
+21,565
+7% +$1.36M
PRIM icon
34
Primoris Services
PRIM
$4.7B
$18.7M 0.99%
130,626
+24,910
+24% +$3.65M
DAVE icon
35
Dave Inc
DAVE
$5.57B
$18.4M 0.98%
105,442
+61,441
+140% +$11.9M
KTOS icon
36
Kratos Defense & Security Solutions
KTOS
$9.04B
$18.3M 0.98%
259,811
-34,195
-12% -$3.28M
MAMA icon
37
Mama's Creations
MAMA
$783M
$18.1M 0.96%
1,176,936
-68,831
-6% -$1.04M
ADEA icon
38
Adeia
ADEA
$3.08B
$17.5M 0.93%
729,461
+473,253
+185% +$9.59M
UPWK icon
39
Upwork
UPWK
$1.14B
$17.2M 0.92%
1,570,560
+850,916
+118% +$13.4M
PLSE icon
40
Pulse Biosciences
PLSE
$2B
$15.8M 0.84%
733,372
+339,873
+86% +$6.27M
PRCH icon
41
Porch Group
PRCH
$1.41B
$15.4M 0.82%
2,144,890
+61,835
+3% +$494K
HAFN icon
42
Hafnia
HAFN
$3.77B
$14.8M 0.79%
+1,948,717
New +$12.9M
MEC icon
43
Mayville Engineering Co
MEC
$767M
$14.7M 0.78%
821,136
+308,374
+60% +$5.94M
CADL icon
44
Candel Therapeutics
CADL
$749M
$14.2M 0.75%
2,894,325
+1,198,958
+71% +$6.52M
LASR icon
45
nLIGHT
LASR
$4.24B
$12.9M 0.68%
225,576
-364,857
-62% -$19.8M
GENI icon
46
Genius Sports
GENI
$1.78B
$12.4M 0.66%
2,791,018
-147,101
-5% -$1.05M
AS icon
47
Amer Sports
AS
$20.1B
$11.8M 0.63%
+357,826
New +$13.1M
EBAY icon
48
eBay
EBAY
$50.2B
$11.5M 0.61%
126,096
+67,952
+117% +$6.1M
PKE icon
49
Park Aerospace
PKE
$732M
$11.2M 0.6%
410,655
+165,620
+68% +$4.24M
ENVA icon
50
Enova International
ENVA
$5.73B
$11M 0.59%
80,923
-16,924
-17% -$2.52M
1
2
3 4 5

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Portolan Capital Management's Q1 2026 Portfolio in Review

As of Q1 2026, Portolan Capital Management held 185 positions worth $1.88B, up 0.67% from $1.87B the previous quarter. Its ten largest holdings account for 28% of the portfolio.

Portolan Capital Management withdrew a net $57.3M in Q1 2026, closing 41 positions and reducing 61 holdings. Its most notable exit was First Solar, an estimated $20.6M position sold in full.

By sector, the portfolio is most concentrated in Technology at 34% of assets, down from 39% a quarter earlier, followed by Consumer Discretionary and Industrials.

Against the trend, Portolan Capital Management opened a new position in Par Pacific Holdings worth $43.5M.

  • Portolan Capital Management's largest Q1 2026 buy was Par Pacific Holdings: 693,834 shares worth $43.5M.
  • Portolan Capital Management added most to Virtu Financial in Q1 2026, an estimated $32.5M increase.
  • Portolan Capital Management's biggest Q1 2026 reduction was TTM Technologies, cutting an estimated $39.9M.
  • Portolan Capital Management fully exited First Solar in Q1 2026, selling an estimated $20.6M.
  • Portolan Capital Management's ten largest holdings make up 28% of its $1.88B portfolio in Q1 2026.
  • Portolan Capital Management opened 30 new positions and closed 41 in Q1 2026.
  • Portolan Capital Management's portfolio value rose 0.67% quarter-over-quarter to $1.88B.

Based on Portolan Capital Management's 13F filing for Q1 2026, filed 15 May 2026.