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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
RELY icon
51
Remitly
RELY
$4.86B
$10.9M 0.58%
698,166
+70,147
+11% +$1.04M
EVLV icon
52
Evolv Technologies
EVLV
$957M
$10.9M 0.58%
+1,795,688
New +$10.5M
WRBY icon
53
Warby Parker
WRBY
$3.01B
$10.5M 0.56%
500,706
-731,467
-59% -$18.1M
BELFB
54
Bel Fuse Inc Class B
BELFB
$3.99B
$10.5M 0.56%
53,170
-86,343
-62% -$18M
LPTH icon
55
Lightpath Technologies
LPTH
$770M
$10.4M 0.56%
1,040,462
-1,291,722
-55% -$14.8M
QTRX icon
56
Quanterix
QTRX
$182M
$10.4M 0.55%
2,945,823
-1,579,730
-35% -$9.22M
RRX icon
57
Regal Rexnord
RRX
$14.2B
$10.1M 0.54%
53,975
+30,877
+134% +$5.74M
AMSC icon
58
American Superconductor
AMSC
$1.64B
$10M 0.53%
+295,636
New +$9.33M
TWLO icon
59
Twilio
TWLO
$27.8B
$9.41M 0.5%
+74,769
New +$9.2M
FOUR icon
60
Shift4
FOUR
$3.83B
$9.37M 0.5%
214,284
-253,779
-54% -$14M
HNST icon
61
The Honest Company
HNST
$426M
$8.95M 0.48%
3,045,834
-1,758,372
-37% -$4.52M
FORR icon
62
Forrester Research
FORR
$175M
$8.72M 0.46%
1,541,276
+835,527
+118% +$5.71M
LPRO
63
Open Lending Corp
LPRO
$372M
$8.63M 0.46%
6,902,888
+2,166,258
+46% +$3.42M
MOG.A icon
64
Moog Inc Class A
MOG.A
$12.7B
$8.61M 0.46%
+29,437
New +$9.01M
VECO icon
65
Veeco
VECO
$3.36B
$8.58M 0.46%
+253,379
New +$8.07M
HQY icon
66
HealthEquity
HQY
$8.05B
$8.49M 0.45%
+101,646
New +$8.34M
ELF icon
67
e.l.f. Beauty
ELF
$4.72B
$8.29M 0.44%
136,707
-55,615
-29% -$4.52M
DGII icon
68
Digi International
DGII
$2.49B
$8.21M 0.44%
170,256
-67,294
-28% -$3.15M
GHM icon
69
Graham Corp
GHM
$1.22B
$8.17M 0.44%
+103,556
New +$8.11M
ZETA icon
70
Zeta Global
ZETA
$5B
$7.74M 0.41%
486,271
-832,526
-63% -$15.4M
ESI icon
71
Element Solutions
ESI
$9.34B
$7.55M 0.4%
+221,232
New +$6.93M
RPAY icon
72
Repay Holdings
RPAY
$302M
$7.43M 0.4%
2,856,178
+65,897
+2% +$211K
ZGN icon
73
Zegna
ZGN
$3.73B
$7.4M 0.39%
710,626
+92
+0% +$951
WLDN icon
74
Willdan Group
WLDN
$1.11B
$7.19M 0.38%
93,964
+36,351
+63% +$3.85M
ACLS icon
75
Axcelis
ACLS
$4.39B
$7.18M 0.38%
+77,168
New +$6.83M
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.