greeksoup/ stock research
Stock research / United States / Funds / Portolan Capital Management, LLC

Portolan Capital Management, LLC

CIK 1350290 · latest 13F filed 14 August 2026 · Read the filing on EDGAR

Portolan Capital Management, LLC reported 148 US-listed holdings worth $2.67 billion in its 13F for the quarter ended 30 June 2026, filed 14 August 2026. Its largest: Vishay Precision Group Inc. (5.7%), Virtu Financial, Inc. (4.8%) and TTM Technologies Inc. (3.6%). Against the quarter before, it opened 36 positions, added to 50, trimmed 57 and sold out of 32.

Reported holdings$2.67B+42.1% on Q1 2026
Positions148+4 on Q1 2026
The largest ten29.0%of its reported holdings
Latest 13FQ2 2026filed 14 August 2026
Where the money is
OpenedAdded toTrimmed
VPG5.7%VIRT4.8%TTMI3.6%MOD3.1%QLYS2.7%FOUR2.0%MEC1.8%ENVA1.8%SMTC1.8%CLS1.7%UTHR1.7%GENI1.6%POWL1.6%PENG1.6%134 more64.6%

The 14 largest of its 148 positions, each sized by its share of the reported holdings, coloured by the change in shares against Q1 2026.

Reported holdings, quarter by quarter
Q3 2024: $1.38 billion in 129 positions$1.38BQ3 24Q4 2024: $1.49 billion in 131 positions$1.49BQ4 24Q1 2025: $1.32 billion in 109 positions$1.32BQ1 25Q2 2025: $1.59 billion in 118 positions$1.59BQ2 25Q3 2025: $1.85 billion in 119 positions$1.85BQ3 25Q4 2025: $1.87 billion in 155 positions$1.87BQ4 25Q1 2026: $1.88 billion in 144 positions$1.88BQ1 26Q2 2026: $2.67 billion in 148 positions$2.67BQ2 26

What the fund reported holding at each quarter's end; hover a bar for the number of positions

What it did on the quarter

Opened 36Added 50Held 5Trimmed 57Sold out 32
Opened: 36Added: 50Held: 5Trimmed: 57Sold out: 32

Its positions against its 13F for the quarter to 31 March 2026; a change under 0.1% of a position counts as held

Opened 36

  1. Penguin Solutions, Inc. PENG$41.5 million
  2. Sportradar Group AG SRAD$27.2 million
  3. Bandwidth Inc. BAND$26.1 million
  4. Kontoor Brands, Inc. KTB$24.3 million
  5. Encore Capital Group Inc. ECPG$23.9 million
  6. Blackberry Ltd BB$21.7 million
  7. International Flavors & Fragrances Inc. IFF$21.3 million
  8. Vishay Intertechnology Inc. VSH$18.9 million

and 28 more in the table below

Added to 50

  1. Virtu Financial, Inc. VIRT+930,328 shares · +77%
  2. SHIFT4 Pmts Inc. FOUR+899,832 shares · +420%
  3. Qualys, Inc. QLYS+290,779 shares · +122%
  4. Enova International, Inc. ENVA+117,872 shares · +146%
  5. Genius Sports Limited GENI+4.2 million shares · +152%
  6. Oshkosh Corp. OSK+139,456 shares · +767%
  7. Zeta Global Holdings Corp. ZETA+1.0 million shares · +209%
  8. Powell Industries Inc. POWL+69,801 shares · +92%

and 42 more in the table below

Trimmed 57

  1. TTM Technologies Inc. TTMI-219,656 shares · -30%
  2. Flex Ltd. FLEX-214,101 shares · -48%
  3. Baidu, Inc. BIDU-270,566 shares · -74%
  4. Fabrinet FN-48,345 shares · -88%
  5. Modine Manufacturing Co MOD-98,409 shares · -24%
  6. Celestica Inc. CLS-71,007 shares · -36%
  7. Castle Biosciences Inc. CSTL-1.0 million shares · -76%
  8. Open Lending Corp. LPRO-6.7 million shares · -97%

and 49 more in the table below

Sold out of 32

  1. PBF Energy Inc. PBF$38.1 million last quarter
  2. Crescent Energy Co. CRGY$35.1 million last quarter
  3. Core Natural Resources, Inc. CNR$24.8 million last quarter
  4. Murphy USA Inc. MUSA$23.8 million last quarter
  5. Circle Internet Group Inc. CRCL$20.4 million last quarter
  6. Primoris Services Corp. PRIM$18.7 million last quarter
  7. Upwork, Inc. UPWK$17.2 million last quarter
  8. Repay Hldgs Corp. RPAY$7.4 million last quarter

What it holds

CompanySharesValueOf its bookChange in shares
Vishay Precision Group Inc. VPG1,008,167$151.1 million5.66%-11,701
Virtu Financial, Inc. VIRT2,142,215$127.6 million4.78%+930,328
TTM Technologies Inc. TTMI507,838$95.0 million3.56%-219,656
Modine Manufacturing Co MOD313,683$83.8 million3.14%-98,409
Qualys, Inc. QLYS529,807$72.8 million2.73%+290,779
SHIFT4 Pmts Inc. FOUR1,114,116$54.2 million2.03%+899,832
Mayville Engr Co. Inc. MEC1,299,256$48.7 million1.82%+478,120
Enova International, Inc. ENVA198,795$47.9 million1.79%+117,872
Semtech Corp. SMTC294,619$47.7 million1.79%-37,708
Celestica Inc. CLS126,856$46.3 million1.73%-71,007
United Therapeutics Corp. UTHR81,518$44.2 million1.65%+18,083
Genius Sports Limited GENI7,025,809$42.6 million1.59%+4,234,791
Powell Industries Inc. POWL145,631$41.7 million1.56%+69,801
Penguin Solutions, Inc. PENG546,173$41.5 million1.55%new
Dave Inc. DAVE105,338$39.2 million1.47%-104
Flex Ltd. FLEX229,027$37.1 million1.39%-214,101
Allient Inc. ALNT359,685$37.0 million1.39%+36,232
Porch Group Inc. PRCH2,456,451$36.9 million1.38%+311,561
Akamai Technologies Inc. AKAM310,361$36.7 million1.37%-113,081
Candel Therapeutics Inc. CADL3,490,398$36.0 million1.35%+596,073
Talen Energy Corp. TLN90,312$34.7 million1.30%+8,738
Regal Rexnord Corp. RRX137,498$32.8 million1.23%+83,523
Lantheus Holdings, Inc. LNTH288,691$32.0 million1.20%-128,699
Biogen Inc. BIIB142,856$30.9 million1.16%+24,375
Veeco Instruments Inc. VECO401,639$30.4 million1.14%+148,260
Myt Netherlands Parent B V LUXE4,053,147$30.1 million1.13%+319,204
Zeta Global Holdings Corp. ZETA1,502,738$29.6 million1.11%+1,016,467
Cellebrite Di Ltd CLBT1,932,514$28.2 million1.06%-248,410
Sportradar Group AG SRAD1,819,949$27.2 million1.02%new
Canada Goose Hldgs Inc. GOOS2,750,523$26.2 million0.98%-467,754
Bandwidth Inc. BAND412,701$26.1 million0.98%new
Warby Parker Inc. WRBY843,862$25.6 million0.96%+343,156
Kontoor Brands, Inc. KTB292,115$24.3 million0.91%new
Oshkosh Corp. OSK157,641$24.2 million0.91%+139,456
Encore Capital Group Inc. ECPG255,715$23.9 million0.89%new
Twilio Inc. TWLO115,397$23.8 million0.89%+40,628
Sezzle Inc. SEZL135,743$23.3 million0.87%+65,697
Remitly Global, Inc. RELY1,017,592$22.8 million0.85%+319,426
ACM Research, Inc. ACMR177,432$22.5 million0.84%+94,176
Element Solutions Inc. ESI469,213$22.4 million0.84%+247,981
Nokia Corporation NOK1,645,761$21.9 million0.82%-748,209
Blackberry Ltd BB1,714,461$21.7 million0.81%new
International Flavors & Fragrances Inc. IFF269,229$21.3 million0.80%new
Pulse Biosciences Inc. PLSE753,333$20.9 million0.78%+19,961
Moog Inc. MOGA49,274$20.9 million0.78%+19,837
the Real Brokerage Inc. REAX11,042,364$20.1 million0.75%-3,477,484
Caredx Inc. CDNA684,805$19.5 million0.73%+344,453
Par Pacific Holdings, Inc. PARR341,863$19.2 million0.72%-351,971
Vishay Intertechnology Inc. VSH351,515$18.9 million0.71%new
Take-Two Interactive Software, Inc. TTWO72,487$18.1 million0.68%+40,268
Gates Industrial Corp. Ltd. GTES641,587$17.9 million0.67%new
Mamas Creations Inc. MAMA984,869$17.6 million0.66%-192,067
Kura Sushi USA Inc. KRUS302,010$17.4 million0.65%+798
Sanmina Corp. SANM68,255$17.3 million0.65%+40,923
Park Aerospace Corp. PKE447,390$17.1 million0.64%+36,735
Graham Corp. GHM136,925$16.9 million0.63%+33,369
Bel Fuse Inc. BELFB47,856$15.9 million0.60%-5,314
On Holding AG ONON441,137$15.6 million0.59%+238,693
Amer Sports Inc. AS452,880$15.3 million0.57%+95,054
Cohu Inc. COHU206,120$15.2 million0.57%new
Jabil Inc. JBL38,929$15.0 million0.56%-38,268
Adeia Inc. ADEA443,060$14.6 million0.55%-286,401
Vicor Corp. VICR38,081$14.5 million0.54%+11,411
Tenable Hldgs Inc. TENB387,923$14.3 million0.54%new
GE HealthCare Technologies Inc. GEHC222,393$14.2 million0.53%new
Crane Nxt, Co. CXT271,524$13.9 million0.52%new
Ranpak Holdings Corp. PACK1,894,855$13.9 million0.52%-52,826
Onto Innovation Inc. ONTO36,503$13.8 million0.52%+14,240
Genedx Holdings Corp. WGS200,315$13.8 million0.51%+97,740
Forrester Resh Inc. FORR1,623,925$13.7 million0.51%+82,649
Marinemax Inc. HZO344,358$12.6 million0.47%new
Bio-Rad Laboratories, Inc. BIO42,620$12.5 million0.47%+28,447
Quantum Corp. QMCO1,020,120$11.2 million0.42%new
Baidu, Inc. BIDU95,863$11.0 million0.41%-270,566
Ferrari N.V. RACE29,079$10.8 million0.41%new
Digi International Inc. DGII141,243$10.6 million0.40%-29,013
Nlight Inc. LASR151,867$10.6 million0.40%-73,709
Viavi Solutions Inc. VIAV220,118$10.5 million0.39%+74,274
Boot Barn Holdings, Inc. BOOT63,759$10.5 million0.39%new
LightPath Technologies Inc LPTH629,168$10.3 million0.39%-411,294
Frequency Electrs Inc. FEIM152,818$10.1 million0.38%+2,677
Halozyme Therapeutics, Inc. HALO127,498$10.0 million0.37%new
Okeanis Eco Tankers Cor ECO195,997$9.8 million0.37%-342,863
Ermenegildo Zegna N V ZGN753,948$9.8 million0.37%+43,322
Sweetgreen Inc. SG1,029,016$9.1 million0.34%new
Tapestry, Inc. TPR61,688$9.0 million0.34%+44,650
Solaris Energy Infrastructure, Inc. SEI107,401$8.6 million0.32%+79,471
A10 Networks, Inc. ATEN226,920$8.5 million0.32%new
Ambarella Inc. AMBA97,072$8.3 million0.31%-11,677
Tecnoglass Inc. TGLS176,254$8.3 million0.31%new
Quanterix Corp. QTRX1,899,308$8.2 million0.31%-1,046,515
Tecogen Inc. TGEN1,551,113$8.1 million0.30%+1,107,558
Healthequity, Inc. HQY89,274$8.1 million0.30%-12,372
Tower Semiconductor Ltd TSEM30,557$8.0 million0.30%-1,486
Castle Biosciences Inc. CSTL328,818$7.8 million0.29%-1,021,465
Silicom Ltd SILC162,466$7.8 million0.29%new
Ciena Corp. CIEN15,272$7.5 million0.28%-3,194
Ebay Inc. EBAY65,741$7.3 million0.28%-60,355
RB Global Inc. RBA63,009$7.3 million0.27%new
Xometry Inc. XMTR73,163$7.1 million0.26%new
Mobileye Global Inc. MBLY721,338$7.0 million0.26%+43,203
Willdan Group Inc. WLDN84,394$6.7 million0.25%-9,570
Honest Co. Inc. HNST1,740,146$6.4 million0.24%-1,305,688
Materion Corp. MTRN20,860$6.2 million0.23%new
Titan Amer SA TTAM320,509$6.0 million0.22%new
Global E Online Ltd GLBE171,521$6.0 million0.22%new
Meta Platforms, Inc. META10,155$5.7 million0.21%-106
Celsius Holdings, Inc. CELH194,851$5.7 million0.21%+30,254
the Realreal Inc. REAL478,194$5.6 million0.21%new
e.l.f. Beauty, Inc. ELF75,954$5.6 million0.21%-60,753
TransMedics Group, Inc. TMDX82,354$5.5 million0.20%+71,666
Fluent Inc RDVT84,135$5.4 million0.20%new
DHT Holdings Inc. DHT314,928$5.2 million0.19%-776,860
Evolv Technologies Hldngs in EVLV894,478$5.2 million0.19%-901,210
Procept Biorobotics Corp. PRCT227,010$5.1 million0.19%-24,706
Timken Co. TKR34,861$5.1 million0.19%new
Lumentum Holdings Inc. LITE5,822$5.0 million0.19%no change
Generac Holdings Inc. GNRC16,852$4.9 million0.18%new
Brunswick Corp. BC57,175$4.8 million0.18%new
Equipmentshare Com Inc. EQPT231,126$4.5 million0.17%new
Cognyte Software Ltd CGNT500,140$4.4 million0.16%new
Novanta Inc. NOVT26,972$4.4 million0.16%-10,535
Douglas Elliman Inc. Com DOUG2,399,364$4.2 million0.16%-269,666
Bobs Disc Furniture Inc. BOBS249,906$4.0 million0.15%new
Everus Construction Group, Inc. ECG23,568$3.9 million0.15%+14,843
Methode Electrs Inc. MEI200,000$3.8 million0.14%new
Fabrinet FN6,418$3.6 million0.14%-48,345
Ultra Clean Holdings, Inc. UCTT24,831$3.5 million0.13%-8,869
Kratos Defense & Security Solutions, Inc. KTOS65,221$3.3 million0.12%-194,590
Nextpower Inc. NXT27,101$3.2 million0.12%-29,646
Hafnia Ltd HAFN367,195$2.4 million0.09%-1,581,522
Natera Inc Com NTRA8,532$2.3 million0.09%-2,886
Guardant Health Inc. GH13,897$2.1 million0.08%-258
Gigacloud Technology Inc. GCT65,644$2.1 million0.08%+13,630
Alphabet Inc. GOOG5,710$2.0 million0.08%no change
Applied Optoelectronics Inc. AAOI11,966$1.8 million0.07%-17,867
IES Holdings, Inc. IESC1,940$1.4 million0.05%-9,929
Casella Waste Systems Inc. CWST14,690$1.4 million0.05%-410
Planet Labs PBC PL36,869$1.2 million0.05%-10,419
American Superconductor Corp. AMSC29,314$1.2 million0.05%-266,322
Dana Inc. DAN33,121$901,2220.03%-1,116
Digitalbridge Group Inc. DBRG56,763$895,7200.03%-316,367
Lincoln Edl Svcs Corp. LINC14,007$698,9490.03%no change
L3Harris Technologies, Inc. LHX2,157$626,8030.02%no change
Open Lending Corp. LPRO182,803$568,5170.02%-6,720,085
Telix Pharmaceutical Ltd TLX25,424$293,1390.01%-515,843
GDS Hldgs Ltd GDS9,120$273,8740.01%-6,161
Talos Energy Inc. TALO13,300$171,7030.01%-331,249
Every US-listed position in the fund's 13F for the quarter ended 30 June 2026, by the value it reported.
Read moreChange is shares against its 13F for the quarter before; the 32 it sold out of are in the box above.