Oberweis Asset Management Inc/ Top Holdings and 13F Report (2025)

About Oberweis Asset Management Inc/

Investment Activity

Oberweis Asset Management Inc/ has $2.01 billion in total holdings as of March 31, 2025.
Oberweis Asset Management Inc/ owns shares of 192 different stocks, but just 91 companies or ETFs make up 80% of its holdings.
Approximately 17.65% of the portfolio was purchased this quarter.
About 14.79% of the portfolio was sold this quarter.
This quarter, Oberweis Asset Management Inc/ has purchased 196 new stocks and bought additional shares in 67 stocks.
Oberweis Asset Management Inc/ sold shares of 19 stocks and completely divested from 29 stocks this quarter.

Largest Holdings

ADMA Biologics: $67,976,998
Credo Technology Group: $50,598,186
SharkNinja: $41,718,346
Encompass Health: $37,546,487
Doximity: $33,893,002

Largest New Holdings this Quarter

53190C102 - Life Time Group: $24,069,400 Holding
589378108 - Mercury Systems: $17,766,007 Holding
204166102 - Commvault Systems: $16,880,320 Holding
000361105 - AAR: $12,317,800 Holding
62955J103 - NOV: $10,903,608 Holding

Largest Purchases this Quarter

Life Time Group: 797,000 shares (about $24.07M)
Ambarella: 386,025 shares (about $19.43M)
Waystar Holding Corp.: 481,740 shares (about $18.00M)
Mercury Systems: 412,300 shares (about $17.77M)
Commvault Systems: 107,000 shares (about $16.88M)

Largest Sales this Quarter

LivaNova: 429,700 shares (about $16.88M)
ACM Research: 188,252 shares (about $4.39M)
Artivion: 122,500 shares (about $3.01M)
Interface: 54,800 shares (about $1.09M)
SPDR S&P 500 ETF Trust: 1,325 shares (about $741.31K)

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
ADMA ADMA Biologics	$67,976,998	$1,660,608 ▲	2.5%	3,426,260	3.4%	Medical
CRDO Credo Technology Group	$50,598,186	$12,060,891 ▲	31.3%	1,259,915	2.5%	Computer and Technology
SN SharkNinja	$41,718,346	$72,567 ▲	0.2%	500,160	2.1%	Retail/Wholesale
EHC Encompass Health	$37,546,487	$3,027,358 ▲	8.8%	370,720	1.9%	Medical
DOCS Doximity	$33,893,002	$636,009 ▲	1.9%	584,060	1.7%	Medical
AMBA Ambarella	$28,628,962	$19,428,638 ▲	211.2%	568,825	1.4%	Computer and Technology
ITRI Itron	$28,548,148	$7,689,384 ▲	36.9%	272,510	1.4%	Computer and Technology
SKYW SkyWest	$27,884,136		0.0%	319,150	1.4%	Transportation
Waystar Holding Corp.	$26,639,174	$17,997,806 ▲	208.3%	713,040	1.3%	COM
G Genpact	$26,378,968		0.0%	523,600	1.3%	Business Services
RMBS Rambus	$26,268,046	$5,071,361 ▲	23.9%	507,350	1.3%	Computer and Technology
LRN Stride	$26,223,450		0.0%	207,300	1.3%	Consumer Discretionary
DORM Dorman Products	$25,135,001	$3,471,552 ▲	16.0%	208,520	1.3%	Auto/Tires/Trucks
FLS Flowserve	$25,063,891	$2,177,970 ▲	9.5%	513,184	1.2%	Industrials
Zeta Global Holdings Corp.	$24,994,334	$43,392 ▲	0.2%	1,843,240	1.2%	COM
SRAD Sportradar Group	$24,748,414	$8,989,596 ▲	57.0%	1,144,700	1.2%	Consumer Discretionary
FRSH Freshworks	$24,389,417	$12,726,091 ▲	109.1%	1,728,520	1.2%	Computer and Technology
LTH Life Time Group	$24,069,400	$24,069,400 ▲	New Holding	797,000	1.2%	Consumer Discretionary
MTSI MACOM Technology Solutions	$23,340,358	$5,365,311 ▲	29.8%	232,520	1.2%	Computer and Technology
FTDR Frontdoor	$23,031,253	$5,069,903 ▲	28.2%	599,460	1.1%	Construction
VCYT Veracyte	$22,811,228	$611,680 ▲	2.8%	769,350	1.1%	Medical
Primo Brands Corp.	$22,443,876		0.0%	632,400	1.1%	COM
MMSI Merit Medical Systems	$22,046,878	$21,142 ▼	-0.1%	208,560	1.1%	Medical
CLH Clean Harbors	$21,744,072	$1,555,119 ▲	7.7%	110,320	1.1%	Business Services
ICUI ICU Medical	$21,619,113	$137,471 ▼	-0.6%	155,690	1.1%	Medical
AAOI Applied Optoelectronics	$21,257,309	$13,646,549 ▲	179.3%	1,384,841	1.1%	Computer and Technology
ACIW ACI Worldwide	$21,129,111	$2,910,025 ▲	16.0%	386,202	1.1%	Computer and Technology
NVMI Nova	$20,460,630		0.0%	111,000	1.0%	Computer and Technology
BRBR BellRing Brands	$20,349,918	$1,504,092 ▲	8.0%	273,300	1.0%	Medical
Digital Ocean Holdings, Inc.	$19,583,235	$5,369,112 ▲	37.8%	586,500	1.0%	COM
OSIS OSI Systems	$19,511,736		0.0%	100,400	1.0%	Computer and Technology
QTWO Q2	$19,441,630	$10,120,465 ▲	108.6%	242,990	1.0%	Computer and Technology
DECK Deckers Outdoor	$18,993,165	$9,786,729 ▲	106.3%	169,870	0.9%	Retail/Wholesale
BOX BOX	$18,426,506	$1,191,196 ▲	6.9%	597,100	0.9%	Computer and Technology
MRCY Mercury Systems	$17,766,007	$17,766,007 ▲	New Holding	412,300	0.9%	Aerospace
COOP Mr. Cooper Group	$17,593,160		0.0%	147,100	0.9%	Finance
PSN Parsons	$17,257,347	$1,420,448 ▲	9.0%	291,460	0.9%	Business Services
AIZ Assurant	$16,989,750		0.0%	81,000	0.8%	Finance
FSS Federal Signal	$16,903,997		0.0%	229,830	0.8%	Multi-Sector Conglomerates
CVLT Commvault Systems	$16,880,320	$16,880,320 ▲	New Holding	107,000	0.8%	Computer and Technology
GPS GAP	$16,850,736	$1,877,571 ▲	12.5%	817,600	0.8%	Consumer Cyclical
FN Fabrinet	$16,709,346	$4,108,208 ▲	32.6%	84,600	0.8%	Computer and Technology
CCS Century Communities	$16,640,800		0.0%	248,000	0.8%	Construction
SFM Sprouts Farmers Market	$16,561,440		0.0%	108,500	0.8%	Retail/Wholesale
BFAM Bright Horizons Family Solutions	$16,503,004		0.0%	129,904	0.8%	Business Services
YOU Clear Secure	$15,789,554		0.0%	609,400	0.8%	Computer and Technology
ONTO Onto Innovation	$15,674,095	$7,280 ▼	0.0%	129,175	0.8%	Computer and Technology
ACA Arcosa	$15,655,360		0.0%	203,000	0.8%	Construction
LOPE Grand Canyon Education	$15,346,874	$3,027,850 ▲	24.6%	88,700	0.8%	Consumer Discretionary
IMAX IMAX	$15,272,460		0.0%	579,600	0.8%	Consumer Discretionary
CRS Carpenter Technology	$14,749,998	$367,794 ▼	-2.4%	81,411	0.7%	Basic Materials
CARG CarGurus	$14,565,000		0.0%	500,000	0.7%	Auto/Tires/Trucks
DLB Dolby Laboratories	$14,536,110		0.0%	181,000	0.7%	Consumer Discretionary
PRIM Primoris Services	$13,944,889		0.0%	242,900	0.7%	Construction
PEGA Pegasystems	$13,584,208	$3,469,048 ▲	34.3%	195,400	0.7%	Computer and Technology
BROS Dutch Bros	$13,521,060		0.0%	219,000	0.7%	Retail/Wholesale
CLBT Cellebrite DI	$13,463,241		0.0%	692,910	0.7%	Business Services
UCTT Ultra Clean	$13,130,753		0.0%	613,300	0.7%	Computer and Technology
CBT Cabot	$12,703,792		0.0%	152,800	0.6%	Basic Materials
AIR AAR	$12,317,800	$12,317,800 ▲	New Holding	220,000	0.6%	Aerospace
AMSC American Superconductor	$12,121,148	$68,932 ▲	0.6%	668,200	0.6%	Computer and Technology
CAMT Camtek	$11,724,827		0.0%	199,980	0.6%	Computer and Technology
OMCL Omnicell	$11,648,672		0.0%	333,200	0.6%	Medical
BLBD Blue Bird	$11,617,593		0.0%	358,900	0.6%	Auto/Tires/Trucks
CPRX Catalyst Pharmaceuticals	$11,339,300	$12,125 ▲	0.1%	467,600	0.6%	Medical
WGS GeneDx	$10,937,778		0.0%	123,500	0.5%	Medical
NOV NOV	$10,903,608	$10,903,608 ▲	New Holding	716,400	0.5%	Energy
RSI Rush Street Interactive	$10,633,168		0.0%	991,900	0.5%	Consumer Discretionary
CBSH Commerce Bancshares	$10,441,572		0.0%	167,790	0.5%	Finance
EZPW EZCORP	$10,090,560		0.0%	685,500	0.5%	Finance
UAA Under Armour	$9,957,500	$2,750,000 ▲	38.2%	1,593,200	0.5%	Consumer Discretionary
FIVN Five9	$9,953,190	$9,953,190 ▲	New Holding	366,600	0.5%	Computer and Technology
SPXC SPX Technologies	$9,710,012		0.0%	75,400	0.5%	Business Services
Duolingo, Inc.	$9,626,740		0.0%	31,000	0.5%	COM
PLYA Playa Hotels & Resorts	$9,398,983		0.0%	705,100	0.5%	Consumer Discretionary
HQY HealthEquity	$9,358,383	$1,272,528 ▲	15.7%	105,900	0.5%	Medical
MGY Magnolia Oil & Gas	$9,325,992	$1,588,854 ▲	20.5%	369,200	0.5%	Energy
SIMO Silicon Motion Technology	$9,257,536	$1,274,112 ▲	16.0%	183,100	0.5%	Computer and Technology
QLYS Qualys	$9,079,553	$3,060,099 ▲	50.8%	72,100	0.5%	Computer and Technology
EXLS ExlService	$9,007,668		0.0%	190,800	0.4%	Business Services
MTDR Matador Resources	$8,956,077	$1,558,245 ▲	21.1%	175,300	0.4%	Energy
WEAV Weave Communications	$8,641,328	$100,365 ▲	1.2%	779,200	0.4%	Computer and Technology
AGX Argan	$8,629,674	$2,608,971 ▲	43.3%	65,790	0.4%	Construction
LMAT LeMaitre Vascular	$8,563,258	$20,136 ▼	-0.2%	102,065	0.4%	Medical
KRYS Krystal Biotech	$8,438,040		0.0%	46,800	0.4%	Medical
TILE Interface	$8,437,952	$1,087,232 ▼	-11.4%	425,300	0.4%	Consumer Discretionary
FCFS FirstCash	$8,434,432		0.0%	70,100	0.4%	Business Services
OSPN OneSpan	$8,331,838	$13,725 ▲	0.2%	546,350	0.4%	Computer and Technology
ABCB Ameris Bancorp	$8,295,837		0.0%	144,100	0.4%	Finance
LMB Limbach	$8,251,276		0.0%	110,800	0.4%	Construction
EOLS Evolus	$8,151,528		0.0%	677,600	0.4%	Medical
MD Pediatrix Medical Group	$7,905,744	$1,144,710 ▲	16.9%	545,600	0.4%	Medical
GDYN Grid Dynamics	$7,871,950		0.0%	503,000	0.4%	Computer and Technology
SOI Solaris Oilfield Infrastructure	$7,833,600	$7,833,600 ▲	New Holding	360,000	0.4%	Energy
OSW OneSpaWorld	$7,814,066		0.0%	465,400	0.4%	Consumer Discretionary
BOOT Boot Barn	$7,810,161	$2,352,717 ▲	43.1%	72,700	0.4%	Retail/Wholesale
TPC Tutor Perini	$7,793,116	$7,793,116 ▲	New Holding	336,200	0.4%	Construction
ICHR Ichor	$7,637,658		0.0%	337,800	0.4%	Computer and Technology
CDNA CareDx	$7,513,060	$3,550 ▼	0.0%	423,271	0.4%	Medical
OSCR Oscar Health	$7,450,806	$334,567 ▼	-4.3%	568,330	0.4%	Finance

Showing largest 100 holdings. View all holdings.

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Oberweis Asset Management Inc/ Top Holdings and 13F Report (2025)

About Oberweis Asset Management Inc/

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

Stock Ideas and Recommendations

Advanced Stock Screeners and Research Tools

About MarketBeat

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Oberweis Asset Management Inc/ Top Holdings and 13F Report (2025)

About Oberweis Asset Management Inc/

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 ofOberweis Asset Management Inc/

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