Portolan Capital Management, LLC Top Holdings and 13F Report (2026)

About Portolan Capital Management, LLC

Investment Activity

Portolan Capital Management, LLC has $1.88 billion in total holdings as of March 31, 2026.
Portolan Capital Management, LLC owns shares of 144 different stocks, but just 61 companies or ETFs make up 80% of its holdings.
Approximately 35.80% of the portfolio was purchased this quarter.
About 36.30% of the portfolio was sold this quarter.
This quarter, Portolan Capital Management, LLC has purchased 155 new stocks and bought additional shares in 49 stocks.
Portolan Capital Management, LLC sold shares of 61 stocks and completely divested from 41 stocks this quarter.

Largest Holdings

Modine Manufacturing: $89,304,457
TTM Technologies: $70,872,465
CELESTICA INC: $55,734,050
VIRTU FINL INC: $53,298,790
Akamai Technologies: $48,632,314

Largest New Holdings this Quarter

69888T207 - Par Pacific: $43,461,762 Holding
69318G106 - PBF Energy: $38,095,905 Holding
626755102 - Murphy USA: $23,763,415 Holding
172573107 - CIRCLE INTERNET GROUP INC: $20,398,276 Holding
Y2065G121 - DHT: $19,946,967 Holding

Largest Purchases this Quarter

Par Pacific: 693,834 shares (about $43.46M)
PBF Energy: 799,998 shares (about $38.10M)
VIRTU FINL INC: 835,604 shares (about $36.75M)
Crescent Energy: 2,561,242 shares (about $34.58M)
Murphy USA: 48,107 shares (about $23.76M)

Largest Sales this Quarter

TTM Technologies: 419,188 shares (about $40.84M)
Modine Manufacturing: 123,855 shares (about $26.84M)
nLight: 364,857 shares (about $20.80M)
Tower Semiconductor: 116,482 shares (about $20.44M)
Bel Fuse: 86,343 shares (about $17.09M)

Sector Allocation Over Time

Selling

Neutral

Buying

Latest 13F Holdings and Changes Since Previous Quarterly Filing

Issuer Name	Holdings Value	Approximate Purchase/Sale	Change in Shares	Shares Held	% of Portfolio	Sector
MOD Modine Manufacturing	$89,304,457	$26,840,617 â–¼	-23.1%	412,092	4.8%	Auto/Tires/Trucks
TTMI TTM Technologies	$70,872,465	$40,837,295 â–¼	-36.6%	727,494	3.8%	Computer and Technology
CELESTICA INC	$55,734,050	$7,207,628 â–²	14.9%	197,863	3.0%	COM
VIRTU FINL INC	$53,298,790	$36,749,864 â–²	222.1%	1,211,887	2.8%	CL A
AKAM Akamai Technologies	$48,632,314	$11,585,953 â–¼	-19.2%	423,442	2.6%	Computer and Technology
VPG Vishay Precision Group	$44,282,669	$6,174,281 â–²	16.2%	1,019,868	2.4%	Computer and Technology
PARR Par Pacific	$43,461,762	$43,461,762 â–²	New Holding	693,834	2.3%	Energy
POWL Powell Industries	$41,030,096	$1,777,989 â–¼	-4.2%	75,830	2.2%	Industrials
BIDU Baidu	$40,827,519	$11,448,182 â–²	39.0%	366,429	2.2%	Computer and Technology
PBF PBF Energy	$38,095,905	$38,095,905 â–²	New Holding	799,998	2.0%	Energy
UTHR United Therapeutics	$37,615,686	$15,821,892 â–²	72.6%	63,435	2.0%	Medical
REAX Real Brokerage	$36,299,620	$9,350,013 â–²	34.7%	14,519,848	1.9%	Business Services
GOOS Canada Goose	$35,304,499	$11,840,722 â–²	50.5%	3,218,277	1.9%	Retail/Wholesale
CRGY Crescent Energy	$35,115,417	$34,576,767 â–²	6,419.2%	2,601,142	1.9%	Energy
CSTL Castle Biosciences	$33,149,448	$9,308,869 â–¼	-21.9%	1,350,283	1.8%	Medical
LNTH Lantheus	$31,659,032	$4,429,564 â–¼	-12.3%	417,390	1.7%	Medical
CLBT Cellebrite DI	$30,053,133	$12,314,318 â–²	69.4%	2,180,924	1.6%	Computer and Technology
MYTE MYT Netherlands Parent B.V.	$29,871,544	$8,586,152 â–²	40.3%	3,733,943	1.6%	Retail/Wholesale
FLEX Flex	$29,007,159	$1,556,966 â–¼	-5.1%	443,128	1.5%	Computer and Technology
FN Fabrinet	$28,560,000	$22,886,905 â–²	403.4%	54,763	1.5%	Computer and Technology
OKEANIS ECO TANKERS COR	$27,260,927	$19,074,706 â–²	233.0%	538,860	1.5%	SHS
TALEN ENERGY CORP	$26,040,868	$2,103,726 â–²	8.8%	81,574	1.4%	COM
SMTC Semtech	$25,552,623	$13,557,860 â–¼	-34.7%	332,327	1.4%	Computer and Technology
CORE NATURAL RESOURCES INC	$24,824,780	$11,184,535 â–²	82.0%	237,036	1.3%	COM SHS
MUSA Murphy USA	$23,763,415	$23,763,415 â–²	New Holding	48,107	1.3%	Retail/Wholesale
BIIB Biogen	$21,721,122	$6,139,905 â–²	39.4%	118,481	1.2%	Medical
KRUS Kura Sushi USA	$21,021,585	$7,705,932 â–²	57.9%	301,212	1.1%	Retail/Wholesale
QLYS Qualys	$20,998,610	$16,443,148 â–²	361.0%	239,028	1.1%	Computer and Technology
JBL Jabil	$20,505,839	$1,735,095 â–²	9.2%	77,197	1.1%	Computer and Technology
CIRCLE INTERNET GROUP INC	$20,398,276	$20,398,276 â–²	New Holding	213,796	1.1%	COM CL A
DHT DHT	$19,946,967	$19,946,967 â–²	New Holding	1,091,788	1.1%	Transportation
NOK Nokia	$19,247,519	$10,595,498 â–²	122.5%	2,393,970	1.0%	Computer and Technology
ALNT Allient	$19,112,838	$1,274,276 â–²	7.1%	323,453	1.0%	Computer and Technology
PRIMORIS SVCS CORP	$18,684,743	$3,563,126 â–²	23.6%	130,626	1.0%	COM
DAVE Dave	$18,356,398	$10,696,264 â–²	139.6%	105,442	1.0%	Business Services
KTOS Kratos Defense & Security Solutions	$18,319,274	$2,411,090 â–¼	-11.6%	259,811	1.0%	Aerospace
MAMA Mama's Creations	$18,054,198	$1,055,868 â–¼	-5.5%	1,176,936	1.0%	Consumer Staples
ADEA Adeia	$17,528,948	$11,372,270 â–²	184.7%	729,461	0.9%	Business Services
UPWK Upwork	$17,213,338	$9,326,040 â–²	118.2%	1,570,560	0.9%	Computer and Technology
PLSE Pulse Biosciences	$15,833,501	$7,337,858 â–²	86.4%	733,372	0.8%	Medical
PRCH Porch Group	$15,378,861	$443,357 â–²	3.0%	2,144,890	0.8%	Computer and Technology
HAFNIA LTD	$14,810,249	$14,810,249 â–²	New Holding	1,948,717	0.8%	SHS
MEC Mayville Engineering	$14,739,391	$5,535,313 â–²	60.1%	821,136	0.8%	Construction
CADL Candel Therapeutics	$14,182,193	$5,874,894 â–²	70.7%	2,894,325	0.8%	Medical
LASR nLight	$12,862,344	$20,804,147 â–¼	-61.8%	225,576	0.7%	Computer and Technology
GENI Genius Sports	$12,364,210	$651,657 â–¼	-5.0%	2,791,018	0.7%	Computer and Technology
AMER SPORTS INC	$11,779,632	$11,779,632 â–²	New Holding	357,826	0.6%	COM SHS
EBAY eBay	$11,477,258	$6,184,991 â–²	116.9%	126,096	0.6%	Retail/Wholesale
PKE Park Aerospace	$11,243,734	$4,534,676 â–²	67.6%	410,655	0.6%	Aerospace
ENVA Enova International	$10,991,771	$2,298,787 â–¼	-17.3%	80,923	0.6%	Finance
REMITLY GLOBAL INC	$10,940,261	$1,099,203 â–²	11.2%	698,166	0.6%	COM
EVLV Evolv Technologies	$10,863,912	$10,863,912 â–²	New Holding	1,795,688	0.6%	Computer and Technology
WRBY Warby Parker	$10,549,875	$15,412,009 â–¼	-59.4%	500,706	0.6%	Consumer Staples
BELFB Bel Fuse	$10,526,597	$17,094,188 â–¼	-61.9%	53,170	0.6%	Computer and Technology
LPTH LightPath Technologies	$10,435,834	$12,955,972 â–¼	-55.4%	1,040,462	0.6%	Computer and Technology
QTRX Quanterix	$10,369,297	$5,560,650 â–¼	-34.9%	2,945,823	0.6%	Medical
RRX Regal Rexnord	$10,107,359	$5,782,027 â–²	133.7%	53,975	0.5%	Industrials
AMSC American Superconductor	$10,007,279	$10,007,279 â–²	New Holding	295,636	0.5%	Computer and Technology
TWLO Twilio	$9,407,436	$9,407,436 â–²	New Holding	74,769	0.5%	Computer and Technology
FOUR Shift4 Payments	$9,370,639	$11,097,755 â–¼	-54.2%	214,284	0.5%	Business Services
HNST Honest	$8,954,752	$5,169,614 â–¼	-36.6%	3,045,834	0.5%	Consumer Discretionary
FORR Forrester Research	$8,723,622	$4,729,083 â–²	118.4%	1,541,276	0.5%	Computer and Technology
LPRO Open Lending	$8,628,610	$2,707,823 â–²	45.7%	6,902,888	0.5%	Finance
MOG.A Moog	$8,614,444	$8,614,444 â–²	New Holding	29,437	0.5%	Aerospace
VECO Veeco Instruments	$8,579,413	$8,579,413 â–²	New Holding	253,379	0.5%	Computer and Technology
HQY HealthEquity	$8,494,556	$8,494,556 â–²	New Holding	101,646	0.5%	Medical
ELF e.l.f. Beauty	$8,285,811	$3,370,825 â–¼	-28.9%	136,707	0.4%	Consumer Staples
DGII Digi International	$8,206,339	$3,243,571 â–¼	-28.3%	170,256	0.4%	Computer and Technology
GHM Graham	$8,172,640	$8,172,640 â–²	New Holding	103,556	0.4%	Industrials
ZETA GLOBAL HOLDINGS CORP	$7,741,434	$13,253,813 â–¼	-63.1%	486,271	0.4%	CL A
ESI Element Solutions	$7,552,860	$7,552,860 â–²	New Holding	221,232	0.4%	Basic Materials
RPAY Repay	$7,426,063	$171,332 â–²	2.4%	2,856,178	0.4%	Business Services
ZGN Ermenegildo Zegna	$7,404,723	$959 â–²	0.0%	710,626	0.4%	Retail/Wholesale
WLDN Willdan Group	$7,193,884	$2,783,033 â–²	63.1%	93,964	0.4%	Business Services
ACLS Axcelis Technologies	$7,182,797	$7,182,797 â–²	New Holding	77,168	0.4%	Computer and Technology
CIEN Ciena	$7,169,055	$14,758,563 â–¼	-67.3%	18,466	0.4%	Computer and Technology
PACK Ranpak	$6,953,221	$10,885 â–¼	-0.2%	1,947,681	0.4%	Industrials
VNET VNET Group	$6,925,861	$156,809 â–²	2.3%	825,490	0.4%	Computer and Technology
ONON ON	$6,887,145	$6,887,145 â–²	New Holding	202,444	0.4%	Retail/Wholesale
NXT Nextpower	$6,840,851	$2,777,713 â–¼	-28.9%	56,747	0.4%	Energy
FEIM Frequency Electronics	$6,645,241	$1,640,497 â–²	32.8%	150,141	0.4%	Computer and Technology
WGS GeneDx	$6,587,367	$3,005,432 â–²	83.9%	102,575	0.4%	Medical
TTWO Take-Two Interactive Software	$6,363,253	$1,079,930 â–¼	-14.5%	32,219	0.3%	Consumer Discretionary
PRCT PROCEPT BioRobotics	$6,295,417	$85,084 â–¼	-1.3%	251,716	0.3%	Medical
NOG Northern Oil and Gas	$5,970,052	$5,970,052 â–²	New Holding	204,244	0.3%	Energy
CDNA CareDx	$5,908,511	$7,263,824 â–¼	-55.1%	340,352	0.3%	Medical
BL BlackLine	$5,883,962	$5,883,962 â–²	New Holding	159,026	0.3%	Computer and Technology
META Meta Platforms	$5,870,626	$32,611 â–¼	-0.6%	10,261	0.3%	Computer and Technology
CELH Celsius	$5,839,902	$5,839,902 â–²	New Holding	164,597	0.3%	Consumer Staples
DBRG DigitalBridge Group	$5,753,665	$6,967,003 â–¼	-54.8%	373,130	0.3%	Finance
IESC IES	$5,655,222	$36,688 â–²	0.7%	11,869	0.3%	Computer and Technology
TSEM Tower Semiconductor	$5,622,906	$20,440,263 â–¼	-78.4%	32,043	0.3%	Computer and Technology
AMBA Ambarella	$5,597,855	$2,805,748 â–²	100.5%	108,749	0.3%	Computer and Technology
CENX Century Aluminum	$5,577,839	$5,577,839 â–²	New Holding	95,039	0.3%	Industrials
TALO Talos Energy	$5,430,092	$3,553,076 â–²	189.3%	344,549	0.3%	Energy
TELIX PHARMACEUTICAL LTD	$5,179,925	$5,179,925 â–²	New Holding	541,267	0.3%	SPONSORED ADS
MIAMI INTL HLDGS INC	$5,013,635	$5,013,635 â–²	New Holding	128,819	0.3%	COM
AVAV AeroVironment	$4,920,384	$8,983,728 â–¼	-64.6%	26,880	0.3%	Aerospace
VIAV Viavi Solutions	$4,853,688	$4,853,688 â–²	New Holding	145,844	0.3%	Computer and Technology
XPEV XPENG	$4,712,642	$3,054,221 â–²	184.2%	275,432	0.3%	Auto/Tires/Trucks

Showing largest 100 holdings. View all holdings.

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Portolan Capital Management, LLC Top Holdings and 13F Report (2026)

About Portolan Capital Management, LLC

Investment Activity

Largest Holdings

Largest New Holdings this Quarter

Largest Purchases this Quarter

Largest Sales this Quarter

Sector Allocation Over Time

Latest 13F Holdings and Changes Since Previous Quarterly Filing

More Institutional Buying and Selling Information

Best-in-Class Portfolio Monitoring

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Portolan Capital Management, LLC Top Holdings and 13F Report (2026)

About Portolan Capital Management, LLC

Investment Activity

Largest Holdings

Largest New Holdings this Quarter

Largest Purchases this Quarter

Largest Sales this Quarter

Sector Allocation Over Time

Map of 500 Largest Holdings ofPortolan Capital Management, LLC

Latest 13F Holdings and Changes Since Previous Quarterly Filing

More Institutional Buying and Selling Information

MarketBeat All Access Features

Best-in-Class Portfolio Monitoring

Stock Ideas and Recommendations

Advanced Stock Screeners and Research Tools