Portolan Capital Management, LLC

CIK

1350290

Location

BOSTON, MA

Portfolio Value

Mid $2,654,267,115

Diversification

Diversified

Filing Date

Global Rank

#1,130 / 8,700 ▲ 380

Top Industry

Software - Infrastructure 13.0%

Period ended 2 months ago

Filed Aug 14, 2026 · 29d

26 quarters · since Mar 2020

Portfolio Concentration

148 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026

Top Position

5.7%

+0.9 pts

Top 5

20.0%

+2.8 pts

Top 10

29.2%

+0.7 pts

HHI

163

Diversified+7

Portfolio Trend

26 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026

Sector	% Portfolio	Value	Positions
Technology	45.0%	$1,193,284,951	52
Consumer Cyclical	12.2%	$323,979,383	21
Industrials	12.2%	$323,387,055	27
Healthcare	11.3%	$298,902,904	19
Financial Services	9.8%	$261,030,150	7
Communication Services	3.0%	$79,390,607	5
Basic Materials	2.4%	$64,167,942	5
Consumer Defensive	1.4%	$35,973,627	5
Utilities	1.3%	$34,703,289	1
Energy	1.3%	$33,190,623	4
Real Estate	0.2%	$6,256,584	2

Last Quarter's Activity

Export CSV

Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
GENI	Genius Sports Ltd	+4,234,791	7,025,809	$42,576,402
TGEN	Tecogen Inc.	+1,107,558	1,551,113	$8,096,809
ZETA	Zeta Global Holdings Corp.	+1,016,467	1,502,738	$29,573,883
VIRT	Virtu Financial, Inc.	+930,328	2,142,215	$127,611,747
FOUR	Shift4 Payments, Inc.	+899,832	1,114,116	$54,190,602
CADL	Candel Therapeutics, Inc.	+596,073	3,490,398	$35,951,099
MEC	Mayville Engineering Company, Inc.	+478,120	1,299,256	$48,670,129
CDNA	CareDx, Inc.	+344,453	684,805	$19,516,942
WRBY	Warby Parker Inc.	+343,156	843,862	$25,602,773
RELY	Remitly Global, Inc.	+319,426	1,017,592	$22,804,236
LUXE	LuxExperience B.V.	+319,204	4,053,147	$30,114,882
PRCH	Porch Group, Inc.	+311,561	2,456,451	$36,945,023
QLYS	Qualys, Inc.	+290,779	529,807	$72,843,164
ESI	Element Solutions Inc	+247,981	469,213	$22,404,920
ONON	On Holding AG	+238,693	441,137	$15,625,072
VECO	Veeco Instruments Inc	+148,260	401,639	$30,444,236
OSK	Oshkosh Corp	+139,456	157,641	$24,194,740
ENVA	Enova International, Inc.	+117,872	198,795	$47,855,920
WGS	GeneDx Holdings Corp.	+97,740	200,315	$13,751,624
AS	Amer Sports, Inc.	+95,054	452,880	$15,325,459
ACMR	ACM Research, Inc.	+94,176	177,432	$22,514,346
RRX	Regal Rexnord Corp	+83,523	137,498	$32,750,648
FORR	Forrester Research, Inc.	+82,649	1,623,925	$13,657,209
SEI	Solaris Energy Infrastructure, Inc.	+79,471	107,401	$8,641,484
VIAV	Viavi Solutions Inc.	+74,274	220,118	$10,510,634
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
—		−6,720,085	182,803	$568,517
—		−3,477,484	11,042,364	$2,009,710
HAFN	Hafnia Ltd	−1,581,522	367,195	$2,438,174
HNST	Honest Company, Inc.	−1,305,688	1,740,146	$6,368,934
QTRX	Quanterix Corp	−1,046,515	1,899,308	$8,205,010
CSTL	Castle Biosciences Inc	−1,021,465	328,818	$7,842,309
EVLV	Evolv Technologies Holdings, Inc.	−901,210	894,478	$5,187,972
DHT	DHT Holdings, Inc.	−776,860	314,928	$5,205,759
NOK	Nokia Corp	−748,209	1,645,761	$21,855,706
TLX	Telix Pharmaceuticals Ltd	−515,843	25,424	$293,138
GOOS	Canada Goose Holdings Inc.	−467,754	2,750,523	$26,157,473
LPTH	Lightpath Technologies Inc	−411,294	629,168	$10,286,896
PARR	Par Pacific Holdings, Inc.	−351,971	341,863	$19,171,677
ECO	Okeanis Eco Tankers Corp.	−342,863	195,997	$9,823,369
TALO	Talos Energy Inc.	−331,249	13,300	$171,703
DBRG	DigitalBridge Group, Inc.	−316,367	56,763	$895,720
ADEA	Adeia Inc.	−286,401	443,060	$14,589,965
BIDU	Baidu, Inc.	−270,566	95,863	$10,956,182
DOUG	Douglas Elliman Inc.	−269,666	2,399,364	$4,246,874
AMSC	American Superconductor Corp /De/	−266,322	29,314	$1,216,824
CLBT	Cellebrite DI Ltd.	−248,410	1,932,514	$28,214,704
TTMI	Ttm Technologies Inc	−219,656	507,838	$94,975,862
FLEX	Flex Ltd.	−214,101	229,027	$37,118,405
KTOS	Kratos Defense & Security Solutions, Inc.	−194,590	65,221	$3,251,919
MAMA	Mama's Creations, Inc.	−192,067	984,869	$17,579,911
No positions match the current search.

New Positions

Positions the filer opened this quarter

25 positions

Ticker	Company	Shares	Value
PENG	Penguin Solutions, Inc.	546,173	$41,514,609
SRAD	Sportradar Group AG	1,819,949	$27,244,636
BAND	Bandwidth Inc.	412,701	$26,123,973
KTB	Kontoor Brands, Inc.	292,115	$24,344,864
ECPG	Encore Capital Group Inc	255,715	$23,855,652
BB	BLACKBERRY Ltd	1,714,461	$21,687,931
IFF	International Flavors & Fragrances Inc	269,229	$21,328,321
VSH	Vishay Intertechnology Inc	351,515	$18,904,476
GTES	Gates Industrial Corp Ltd.	641,587	$17,945,188
COHU	Cohu Inc	206,120	$15,234,329
TENB	Tenable Holdings, Inc.	387,923	$14,306,600
GEHC	GE HealthCare Technologies Inc.	222,393	$14,235,375
CXT	Crane NXT, Co.	271,524	$13,891,167
HZO	Marinemax Inc	344,358	$12,610,389
QMCO	Quantum Corp /De/	1,020,120	$11,221,320
RACE	Ferrari N.V.	29,079	$10,825,820
BOOT	Boot Barn Holdings, Inc.	63,759	$10,473,690
HALO	Halozyme Therapeutics, Inc.	127,498	$9,979,268
SG	Sweetgreen, Inc.	1,029,016	$9,065,630
ATEN	A10 Networks, Inc.	226,920	$8,477,731
TGLS	Tecnoglass Holdings Inc.	176,254	$8,250,449
SILC	Silicom Ltd.	162,466	$7,788,620
RBA	Rb Global Inc.	63,009	$7,337,398
XMTR	Xometry, Inc.	73,163	$7,061,692
MTRN	MATERION Corp	20,860	$6,203,555
No positions match the current search.

Sold Out

Positions the filer fully exited

25 positions

Ticker	Company	Shares	Value
PBF	PBF Energy Inc.	799,998	$38,095,904
CRGY	Crescent Energy Co	2,601,142	$35,115,417
CNR	Core Natural Resources, Inc.	237,036	$24,824,780
MUSA	Murphy USA Inc.	48,107	$23,763,414
CRCL	Circle Internet Group, Inc.	213,796	$20,398,276
PRIM	Primoris Services Corp	130,626	$18,684,743
UPWK	Upwork, Inc	1,570,560	$17,213,337
RPAY	Repay Holdings Corp	2,856,178	$7,426,062
ACLS	Axcelis Technologies Inc	77,168	$7,182,797
VNET	VNET Group, Inc.	825,490	$6,925,861
NOG	Northern Oil & Gas, Inc.	204,244	$5,970,052
BL	Blackline, Inc.	159,026	$5,883,962
CENX	Century Aluminum Co	95,039	$5,577,838
MIAX	Miami International Holdings, Inc.	128,819	$5,013,635
AVAV	AeroVironment Inc	26,880	$4,920,384
XPEV	Xpeng Inc.	275,432	$4,712,641
PSNL	Personalis, Inc.	736,713	$4,692,861
IIIV	i3 Verticals, Inc.	207,274	$4,634,646
PUMP	ProPetro Holding Corp.	314,815	$4,536,484
FPS	Forgent Power Solutions, Inc.	117,933	$3,451,898
DPRO	Draganfly Inc.	682,730	$3,352,204
GDOT	Green Dot Corp	298,697	$3,351,380
SPT	Sprout Social, Inc.	558,350	$3,182,595
XZO	Exzeo Group, Inc.	209,885	$3,079,012
AMPL	Amplitude, Inc.	359,593	$2,452,424
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

148 tracked positions · $2,654,267,115 total · filing declares 148 positions · $2,670,929,331 · as of Jun 30, 2026

All sectors Basic Materials Communication Services Consumer Cyclical Consumer Defensive Energy Financial Services Healthcare Industrials Real Estate Technology Utilities

Showing 1–50 of 148 positions by value · page 1 of 3

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
VPG	Vishay Precision Group, Inc. Technology	Reduced	1,008,167	-11,701	$151,134,314	+241.3%	5.69%
VIRT	Virtu Financial, Inc. Financial Services	Added	2,142,215	+930,328	$127,611,747	+139.4%	4.81%
TTMI	Ttm Technologies Inc Technology	Reduced	507,838	-219,656	$94,975,862	+34.0%	3.58%
MOD	Modine Manufacturing Co Consumer Cyclical	Reduced	313,683	-98,409	$83,759,634	−6.2%	3.16%
QLYS	Qualys, Inc. Technology	Added	529,807	+290,779	$72,843,164	+246.9%	2.74%
FOUR	Shift4 Payments, Inc. Technology	Added	1,114,116	+899,832	$54,190,602	+478.3%	2.04%
MEC	Mayville Engineering Company, Inc. Industrials	Added	1,299,256	+478,120	$48,670,129	+230.2%	1.83%
ENVA	Enova International, Inc. Financial Services	Added	198,795	+117,872	$47,855,920	+335.4%	1.80%
SMTC	Semtech Corp Technology	Reduced	294,619	-37,708	$47,684,085	+86.6%	1.80%
CLS	Celestica Inc Technology	Reduced	126,856	-71,007	$46,277,068	−17.0%	1.74%
UTHR	UNITED THERAPEUTICS Corp Healthcare	Added	81,518	+18,083	$44,168,897	+17.4%	1.66%
GENI	Genius Sports Ltd Communication Services	Added	7,025,809	+4,234,791	$42,576,402	+244.4%	1.60%
POWL	Powell Industries Inc Industrials	Added	145,631	+69,801	$41,702,893	+1.6%	1.57%
PENG	Penguin Solutions, Inc. Technology	NEW	546,173	NEW	$41,514,609	NEW	1.56%
DAVE	Dave Inc./DE Technology	Reduced	105,338	-104	$39,247,885	+113.8%	1.48%
FLEX	Flex Ltd. Technology	Reduced	229,027	-214,101	$37,118,405	+28.0%	1.40%
ALNT	Allient Inc Technology	Added	359,685	+36,232	$37,022,377	+93.7%	1.39%
PRCH	Porch Group, Inc. Financial Services	Added	2,456,451	+311,561	$36,945,023	+140.2%	1.39%
AKAM	Akamai Technologies Inc Technology	Reduced	310,361	-113,081	$36,687,773	−24.6%	1.38%
CADL	Candel Therapeutics, Inc. Healthcare	Added	3,490,398	+596,073	$35,951,099	+153.5%	1.35%
TLN	Talen Energy Corp Utilities	Added	90,312	+8,738	$34,703,289	+33.3%	1.31%
RRX	Regal Rexnord Corp Industrials	Added	137,498	+83,523	$32,750,648	+224.0%	1.23%
LNTH	Lantheus Holdings, Inc. Healthcare	Reduced	288,691	-128,699	$32,027,379	+1.2%	1.21%
BIIB	Biogen Inc. Healthcare	Added	142,856	+24,375	$30,865,467	+42.1%	1.16%
VECO	Veeco Instruments Inc Technology	Added	401,639	+148,260	$30,444,236	+254.9%	1.15%
LUXE	LuxExperience B.V. Consumer Cyclical	Added	4,053,147	+319,204	$30,114,882	+0.8%	1.13%
ZETA	Zeta Global Holdings Corp. Technology	Added	1,502,738	+1,016,467	$29,573,883	+282.0%	1.11%
CLBT	Cellebrite DI Ltd. Technology	Reduced	1,932,514	-248,410	$28,214,704	−6.1%	1.06%
SRAD	Sportradar Group AG Technology	NEW	1,819,949	NEW	$27,244,636	NEW	1.03%
GOOS	Canada Goose Holdings Inc. Consumer Cyclical	Reduced	2,750,523	-467,754	$26,157,473	−25.9%	0.99%
BAND	Bandwidth Inc. Technology	NEW	412,701	NEW	$26,123,973	NEW	0.98%
WRBY	Warby Parker Inc. Healthcare	Added	843,862	+343,156	$25,602,773	+142.7%	0.96%
KTB	Kontoor Brands, Inc. Consumer Cyclical	NEW	292,115	NEW	$24,344,864	NEW	0.92%
OSK	Oshkosh Corp Industrials	Added	157,641	+139,456	$24,194,740	+803.8%	0.91%
ECPG	Encore Capital Group Inc Financial Services	NEW	255,715	NEW	$23,855,652	NEW	0.90%
TWLO	Twilio Inc Technology	Added	115,397	+40,628	$23,809,863	+153.1%	0.90%
SEZL	Sezzle Inc. Financial Services	Added	135,743	+65,697	$23,297,571	+425.5%	0.88%
RELY	Remitly Global, Inc. Technology	Added	1,017,592	+319,426	$22,804,236	+108.4%	0.86%
ACMR	ACM Research, Inc. Technology	Added	177,432	+94,176	$22,514,346	+587.2%	0.85%
ESI	Element Solutions Inc Basic Materials	Added	469,213	+247,981	$22,404,920	+196.6%	0.84%
NOK	Nokia Corp Technology	Reduced	1,645,761	-748,209	$21,855,706	+13.6%	0.82%
BB	BLACKBERRY Ltd Technology	NEW	1,714,461	NEW	$21,687,931	NEW	0.82%
IFF	International Flavors & Fragrances Inc Basic Materials	NEW	269,229	NEW	$21,328,321	NEW	0.80%
PLSE	Pulse Biosciences, Inc. Healthcare	Added	753,333	+19,961	$20,889,924	+31.9%	0.79%
MOG-A	Moog Inc. Industrials	Added	49,274	+19,837	$20,884,292	+142.4%	0.79%
CDNA	CareDx, Inc. Healthcare	Added	684,805	+344,453	$19,516,942	+230.3%	0.74%
PARR	Par Pacific Holdings, Inc. Energy	Reduced	341,863	-351,971	$19,171,677	−55.9%	0.72%
VSH	Vishay Intertechnology Inc Technology	NEW	351,515	NEW	$18,904,476	NEW	0.71%
TTWO	Take Two Interactive Software Inc Communication Services	Added	72,487	+40,268	$18,120,300	+184.8%	0.68%
GTES	Gates Industrial Corp Ltd. Industrials	NEW	641,587	NEW	$17,945,188	NEW	0.68%

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.