Oberweis Asset Management Inc/ Top Holdings and 13F Report (2024)

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About Oberweis Asset Management Inc/

Investment Activity

Oberweis Asset Management Inc/ has $1.38 billion in total holdings as of March 31, 2024.
Oberweis Asset Management Inc/ owns shares of 196 different stocks, but just 101 companies or ETFs make up 80% of its holdings.
Approximately 29.12% of the portfolio was purchased this quarter.
About 11.52% of the portfolio was sold this quarter.
This quarter, Oberweis Asset Management Inc/ has purchased 192 new stocks and bought additional shares in 115 stocks.
Oberweis Asset Management Inc/ sold shares of 37 stocks and completely divested from 31 stocks this quarter.

Largest Holdings

Constellium: $39,870,322
Weatherford International: $25,634,782
Axcelis Technologies: $23,345,485
Onto Innovation: $19,362,884
Alphatec: $19,111,285

Largest New Holdings this Quarter

SharkNinja: $14,650,608 Holding
Century Communities: $11,695,800 Holding
Itron: $11,620,512 Holding
Silicon Laboratories: $11,210,160 Holding
AZEK: $11,093,598 Holding

Largest Purchases this Quarter

SharkNinja: 235,200 shares (about $14.65M)
Century Communities: 121,200 shares (about $11.70M)
Itron: 125,600 shares (about $11.62M)
Onto Innovation: 62,330 shares (about $11.29M)
Silicon Laboratories: 78,000 shares (about $11.21M)

Largest Sales this Quarter

Axcelis Technologies: 35,990 shares (about $4.01M)
HNI: 71,400 shares (about $3.22M)
BJ's Restaurants: 85,000 shares (about $3.08M)
Alphatec: 221,940 shares (about $3.06M)
Deckers Outdoor: 2,625 shares (about $2.47M)

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
CSTM Constellium	$39,870,322	$1,041,381 ▼	-2.5%	1,803,271	2.9%	Industrial Products
WFRD Weatherford International	$25,634,782	$2,072,943 ▼	-7.5%	222,100	1.9%	Oils/Energy
ACLS Axcelis Technologies	$23,345,485	$4,013,605 ▼	-14.7%	209,339	1.7%	Computer and Technology
ONTO Onto Innovation	$19,362,884	$11,286,716 ▲	139.8%	106,930	1.4%	Computer and Technology
ATEC Alphatec	$19,111,285	$3,060,553 ▼	-13.8%	1,385,880	1.4%	Medical
VRT Vertiv	$18,755,543	$328,477 ▼	-1.7%	229,650	1.4%	Computer and Technology
ADMA ADMA Biologics	$18,418,620	$528,000 ▲	3.0%	2,790,700	1.3%	Medical
AMPH Amphastar Pharmaceuticals	$18,348,452	$3,407,416 ▲	22.8%	417,865	1.3%	Medical
SKYW SkyWest	$18,123,829	$8,887,833 ▲	96.2%	262,360	1.3%	Transportation
EHC Encompass Health	$16,857,558	$4,863,221 ▲	40.5%	204,136	1.2%	Medical
SIMO Silicon Motion Technology	$16,726,756	$10,848,540 ▲	184.6%	217,400	1.2%	Computer and Technology
OSK Oshkosh	$16,689,608	$4,355,882 ▲	35.3%	133,827	1.2%	Auto/Tires/Trucks
CLH Clean Harbors	$16,365,496	$4,879,754 ▲	42.5%	81,295	1.2%	Business Services
AVAV AeroVironment	$15,568,650	$4,869,706 ▲	45.5%	101,570	1.1%	Aerospace
CAMT Camtek	$14,926,139	$309,949 ▲	2.1%	178,180	1.1%	Computer and Technology
VCYT Veracyte	$14,884,872	$329,962 ▲	2.3%	671,700	1.1%	Medical
UCTT Ultra Clean	$14,682,424	$3,330,650 ▲	29.3%	319,600	1.1%	Computer and Technology
TMDX TransMedics Group	$14,654,908	$1,086,918 ▼	-6.9%	198,200	1.1%	Medical
SN SharkNinja	$14,650,608	$14,650,608 ▲	New Holding	235,200	1.1%	Consumer Discretionary
ICFI ICF International	$14,596,047	$4,639,404 ▲	46.6%	96,900	1.1%	Business Services
ESAB ESAB	$14,285,644	$5,539,557 ▲	63.3%	129,200	1.0%	Industrial Products
PSN Parsons	$14,279,013	$3,246,663 ▲	29.4%	172,140	1.0%	Business Services
CROX Crocs	$13,718,520	$6,528,520 ▲	90.8%	95,400	1.0%	Consumer Discretionary
NXT Nextracker	$13,262,839	$7,455,775 ▲	128.4%	235,700	1.0%	Oils/Energy
OLED Universal Display	$13,045,142	$1,836,110 ▲	16.4%	77,442	0.9%	Computer and Technology
ZETA Zeta Global	$12,919,041	$2,694,245 ▲	26.4%	1,181,980	0.9%	Business Services
ACMR ACM Research	$12,854,528	$1,390,852 ▲	12.1%	441,130	0.9%	Computer and Technology
FLS Flowserve	$12,533,571	$1,329,606 ▲	11.9%	274,378	0.9%	Industrial Products
HAE Haemonetics	$12,264,368	$3,227,510 ▲	35.7%	143,695	0.9%	Medical
ACHC Acadia Healthcare	$12,013,713	$4,868,069 ▲	68.1%	151,650	0.9%	Medical
AEHR Aehr Test Systems	$12,001,365	$1,529,540 ▼	-11.3%	967,852	0.9%	Computer and Technology
MMSI Merit Medical Systems	$11,854,118	$3,742,050 ▲	46.1%	156,490	0.9%	Medical
AAOI Applied Optoelectronics	$11,775,664	$586,278 ▼	-4.7%	849,615	0.9%	Computer and Technology
CCS Century Communities	$11,695,800	$11,695,800 ▲	New Holding	121,200	0.8%	Construction
FCFS FirstCash	$11,695,418	$2,231,950 ▲	23.6%	91,700	0.8%	Business Services
ITRI Itron	$11,620,512	$11,620,512 ▲	New Holding	125,600	0.8%	Computer and Technology
NEO NeoGenomics	$11,588,784	$5,415,540 ▲	87.7%	737,200	0.8%	Medical
BLBD Blue Bird	$11,467,494	$475,416 ▲	4.3%	299,100	0.8%	Auto/Tires/Trucks
ACIW ACI Worldwide	$11,442,904	$6,651,963 ▲	138.8%	344,562	0.8%	Computer and Technology
LIVN LivaNova	$11,327,850	$7,177,102 ▲	172.9%	202,500	0.8%	Medical
ITGR Integer	$11,282,956	$2,998,676 ▲	36.2%	96,700	0.8%	Medical
AXNX Axonics	$11,281,423	$1,027,653 ▼	-8.3%	163,570	0.8%	Medical
SLAB Silicon Laboratories	$11,210,160	$11,210,160 ▲	New Holding	78,000	0.8%	Computer and Technology
EVH Evolent Health	$11,113,843	$4,079,076 ▲	58.0%	338,940	0.8%	Computer and Technology
AZEK AZEK	$11,093,598	$11,093,598 ▲	New Holding	220,900	0.8%	Construction
FSS Federal Signal	$10,848,932	$2,461,230 ▲	29.3%	127,830	0.8%	Multi-Sector Conglomerates
Informatica Corp.	$10,815,000	$4,441,500 ▲	69.7%	309,000	0.8%	com
FORM FormFactor	$10,800,621	$3,536,325 ▲	48.7%	236,700	0.8%	Computer and Technology
CECO CECO Environmental	$10,667,468	$844,834 ▲	8.6%	463,400	0.8%	Industrial Products
STRL Sterling Infrastructure	$10,655,946	$948,666 ▲	9.8%	96,600	0.8%	Construction
YOU Clear Secure	$10,645,635	$4,190,190 ▲	64.9%	500,500	0.8%	Industrial Products
INSW International Seaways	$10,570,840	$5,538,120 ▲	110.0%	198,700	0.8%	Transportation
WWD Woodward	$10,541,808	$2,527,568 ▲	31.5%	68,400	0.8%	Computer and Technology
JBI Janus International Group	$10,521,402	$2,526,710 ▲	31.6%	695,400	0.8%	Construction
RAMP LiveRamp	$10,204,410	$5,408,910 ▲	112.8%	295,780	0.7%	Business Services
VECO Veeco Instruments	$9,464,247	$1,023,447 ▲	12.1%	269,100	0.7%	Computer and Technology
PRIM Primoris Services	$8,935,443		0.0%	209,900	0.6%	Construction
DECK Deckers Outdoor	$8,866,669	$2,470,807 ▼	-21.8%	9,420	0.6%	Retail/Wholesale
FTDR Frontdoor	$8,578,314	$254,124 ▼	-2.9%	263,300	0.6%	Construction
AMSC American Superconductor	$8,570,744	$3,493,686 ▲	68.8%	634,400	0.6%	Computer and Technology
ELF e.l.f. Beauty	$8,570,432	$2,983,577 ▲	53.4%	43,720	0.6%	Consumer Staples
MSA MSA Safety	$8,556,678	$3,116,799 ▲	57.3%	44,200	0.6%	Industrial Products
GO Grocery Outlet	$8,518,880	$4,512,704 ▲	112.6%	296,000	0.6%	Consumer Staples
SPXC SPX Technologies	$8,495,970	$492,520 ▼	-5.5%	69,000	0.6%	Business Services
CBT Cabot	$8,491,620	$8,491,620 ▲	New Holding	92,100	0.6%	Basic Materials
AIZ Assurant	$8,470,800	$2,691,832 ▲	46.6%	45,000	0.6%	Finance
KWR Quaker Chemical	$8,312,625	$2,770,875 ▲	50.0%	40,500	0.6%	Basic Materials
OSIS OSI Systems	$7,897,946	$2,856,400 ▲	56.7%	55,300	0.6%	Computer and Technology
IBP Installed Building Products	$7,865,392	$7,865,392 ▲	New Holding	30,400	0.6%	Construction
EZPW EZCORP	$7,766,715	$339,900 ▲	4.6%	685,500	0.6%	Finance
AVNW Aviat Networks	$7,641,430	$2,687,634 ▲	54.3%	199,307	0.6%	Computer and Technology
MMS Maximus	$7,525,830	$2,458,270 ▲	48.5%	89,700	0.5%	Business Services
WING Wingstop	$7,328,000	$1,502,240 ▲	25.8%	20,000	0.5%	Retail/Wholesale
CPRX Catalyst Pharmaceuticals	$7,306,896	$1,750,212 ▲	31.5%	458,400	0.5%	Medical
PFBC Preferred Bank	$7,293,150	$414,558 ▲	6.0%	95,000	0.5%	Finance
PLYA Playa Hotels & Resorts	$7,289,550	$485,000 ▲	7.1%	751,500	0.5%	Consumer Discretionary
ATI ATI	$7,261,023	$2,016,098 ▲	38.4%	141,900	0.5%	Basic Materials
PLAB Photronics	$7,252,752	$243,552 ▲	3.5%	256,100	0.5%	Computer and Technology
WEAV Weave Communications	$6,995,912		0.0%	609,400	0.5%	Computer and Technology
LMB Limbach	$6,826,016	$2,704,975 ▲	65.6%	164,800	0.5%	Construction
CRDO Credo Technology Group	$6,821,061	$6,821,061 ▲	New Holding	321,900	0.5%	Business Services
IPAR Inter Parfums	$6,786,633	$14,051 ▼	-0.2%	48,300	0.5%	Consumer Staples
RXST RxSight	$6,532,091	$2,245,793 ▲	52.4%	126,640	0.5%	Medical
RES RPC	$6,489,803	$152,106 ▼	-2.3%	838,476	0.5%	Oils/Energy
MCRI Monarch Casino & Resort	$6,464,138	$2,077,223 ▲	47.4%	86,200	0.5%	Consumer Discretionary
GIII G-III Apparel Group	$6,408,309	$704,943 ▲	12.4%	220,900	0.5%	Consumer Discretionary
KRYS Krystal Biotech	$6,352,101	$6,352,101 ▲	New Holding	35,700	0.5%	Medical
FIX Comfort Systems USA	$6,290,658	$667,191 ▲	11.9%	19,800	0.5%	Construction
PETQ PetIQ	$6,227,996	$663,564 ▲	11.9%	340,700	0.5%	Medical
MOD Modine Manufacturing	$6,139,755	$2,094,180 ▼	-25.4%	64,500	0.4%	Auto/Tires/Trucks
ANF Abercrombie & Fitch	$6,028,373	$864,777 ▼	-12.5%	48,100	0.4%	Retail/Wholesale
TREX Trex	$5,994,975	$1,995,000 ▲	49.9%	60,100	0.4%	Construction
AORT Artivion	$5,975,584	$516,304 ▲	9.5%	282,400	0.4%	Medical
ALGM Allegro MicroSystems	$5,965,709	$989,432 ▼	-14.2%	221,280	0.4%	Computer and Technology
PRMW Primo Water	$5,890,935	$1,505,967 ▲	34.3%	323,500	0.4%	Utilities
LOPE Grand Canyon Education	$5,884,272	$2,233,844 ▲	61.2%	43,200	0.4%	Consumer Discretionary
UPWK Upwork	$5,752,392	$886,398 ▲	18.2%	469,200	0.4%	Computer and Technology
VTLE Vital Energy	$5,747,876	$509,638 ▲	9.7%	109,400	0.4%	Oils/Energy
DVAX Dynavax Technologies	$5,742,107	$562,173 ▲	10.9%	462,700	0.4%	Medical
EOLS Evolus	$5,562,200	$362,600 ▲	7.0%	397,300	0.4%	Medical