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Oberweis Asset Management

Latest statistics and disclosures from Oberweis Asset Management's latest quarterly 13F-HR filing:

Top 5 stock holdings are CSTM, WFRD, ACLS, ONTO, ATEC, and represent 9.21% of Oberweis Asset Management's stock portfolio.
Added to shares of these 10 stocks: SN (+$15M), CCS (+$12M), ITRI (+$12M), ONTO (+$11M), SLAB (+$11M), AZEK (+$11M), SIMO (+$11M), SKYW (+$8.9M), CBT (+$8.5M), IBP (+$7.9M).
Started 33 new stock positions in CELH, BZ, ARIS, IBP, CLBT, ARLO, DUOL, TM, OSCR, BBB Foods.
Reduced shares in these 10 stocks: PERI (-$14M), BELFB (-$8.3M), POWI (-$8.1M), , , , , ATGE (-$5.1M), Rover Group (-$5.1M), .
Sold out of its positions in ATGE, ATRC, BELFB, CDRE, CAL, TAST, CRK, DADA, PLUS, FSLY.
Oberweis Asset Management was a net buyer of stock by $244M.
Oberweis Asset Management has $1.4B in assets under management (AUM), dropping by 28.79%.
Central Index Key (CIK): 0000937886

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Portfolio Holdings for Oberweis Asset Management

Oberweis Asset Management holds 196 positions in its portfolio as reported in the March 2024 quarterly 13F filing

Company (Ticker)	Portfolio Weight	Valued At	Change in Shares	Share Count	Share Price
Constellium Se cl a (CSTM)	2.9	$40M	-2%	1.8M	22.11	View chart
Weatherford Intl Ordf (WFRD)	1.9	$26M	-7%	222k	115.42	View chart
Axcelis Technologies (ACLS)	1.7	$23M	-14%	209k	111.52	View chart
Onto Innovation (ONTO)	1.4	$19M	+139%	107k	181.08	View chart
Alphatec Holdings (ATEC)	1.4	$19M	-13%	1.4M	13.79	View chart
Vertiv Holdings Llc vertiv holdings (VRT)	1.4	$19M		230k	81.67	View chart
Adma Biologics (ADMA)	1.3	$18M	+2%	2.8M	6.60	View chart
Amphastar Pharmaceuticals (AMPH)	1.3	$18M	+22%	418k	43.91	View chart
SkyWest (SKYW)	1.3	$18M	+96%	262k	69.08	View chart
Encompass Health Corp (EHC)	1.2	$17M	+40%	204k	82.58	View chart
Silicon Motion Technology (SIMO)	1.2	$17M	+184%	217k	76.94	View chart
Oshkosh Corporation (OSK)	1.2	$17M	+35%	134k	124.71	View chart
Clean Harbors (CLH)	1.2	$16M	+42%	81k	201.31	View chart
AeroVironment (AVAV)	1.1	$16M	+45%	102k	153.28	View chart
Camtek (CAMT)	1.1	$15M	+2%	178k	83.77	View chart
Veracyte (VCYT)	1.1	$15M	+2%	672k	22.16	View chart
Ultra Clean Holdings (UCTT)	1.1	$15M	+29%	320k	45.94	View chart
Transmedics Group (TMDX)	1.1	$15M	-6%	198k	73.94	View chart
Sharkninja (SN)	1.1	$15M	NEW	235k	62.29	View chart
ICF International (ICFI)	1.1	$15M	+46%	97k	150.63	View chart
Esab Corporation (ESAB)	1.0	$14M	+63%	129k	110.57	View chart
Parsons Corporation (PSN)	1.0	$14M	+29%	172k	82.95	View chart
Crocs (CROX)	1.0	$14M	+90%	95k	143.80	View chart
Nextracker (NXT)	1.0	$13M	+128%	236k	56.27	View chart
Universal Display Corporation (OLED)	0.9	$13M	+16%	77k	168.45	View chart
Zeta Global Holdings Corp (ZETA)	0.9	$13M	+26%	1.2M	10.93	View chart
Acm Research (ACMR)	0.9	$13M	+12%	441k	29.14	View chart
Flowserve Corporation (FLS)	0.9	$13M	+11%	274k	45.68	View chart
Haemonetics Corporation (HAE)	0.9	$12M	+35%	144k	85.35	View chart
Acadia Healthcare (ACHC)	0.9	$12M	+68%	152k	79.22	View chart
Aehr Test Systems (AEHR)	0.9	$12M	-11%	968k	12.40	View chart
Merit Medical Systems (MMSI)	0.9	$12M	+46%	157k	75.75	View chart
Applied Optoelectronics (AAOI)	0.9	$12M	-4%	850k	13.86	View chart
Century Communities (CCS)	0.8	$12M	NEW	121k	96.50	View chart
Firstcash Holdings (FCFS)	0.8	$12M	+23%	92k	127.54	View chart
Itron (ITRI)	0.8	$12M	NEW	126k	92.52	View chart
NeoGenomics (NEO)	0.8	$12M	+87%	737k	15.72	View chart
Blue Bird Corp (BLBD)	0.8	$12M	+4%	299k	38.34	View chart
ACI Worldwide (ACIW)	0.8	$11M	+138%	345k	33.21	View chart
Livanova Plc Ord (LIVN)	0.8	$11M	+172%	203k	55.94	View chart
Integer Hldgs (ITGR)	0.8	$11M	+36%	97k	116.68	View chart
Axonics Modulation Technolog (AXNX)	0.8	$11M	-8%	164k	68.97	View chart
Silicon Laboratories (SLAB)	0.8	$11M	NEW	78k	143.72	View chart
Evolent Health (EVH)	0.8	$11M	+57%	339k	32.79	View chart
Azek (AZEK)	0.8	$11M	NEW	221k	50.22	View chart
Federal Signal Corporation (FSS)	0.8	$11M	+29%	128k	84.87	View chart
Informatica (INFA)	0.8	$11M	+69%	309k	35.00	View chart
FormFactor (FORM)	0.8	$11M	+48%	237k	45.63	View chart
CECO Environmental (CECO)	0.8	$11M	+8%	463k	23.02	View chart
Sterling Construction Company (STRL)	0.8	$11M	+9%	97k	110.31	View chart
Clear Secure (YOU)	0.8	$11M	+64%	501k	21.27	View chart
International Seaways (INSW)	0.8	$11M	+110%	199k	53.20	View chart
Woodward Governor Company (WWD)	0.8	$11M	+31%	68k	154.12	View chart
Janus International Group In (JBI)	0.8	$11M	+31%	695k	15.13	View chart
Liveramp Holdings (RAMP)	0.7	$10M	+112%	296k	34.50	View chart
Veeco Instruments (VECO)	0.7	$9.5M	+12%	269k	35.17	View chart
Primoris Services (PRIM)	0.6	$8.9M		210k	42.57	View chart
Deckers Outdoor Corporation (DECK)	0.6	$8.9M	-21%	9.4k	941.26	View chart
Frontdoor (FTDR)	0.6	$8.6M	-2%	263k	32.58	View chart
American Superconductor (AMSC)	0.6	$8.6M	+68%	634k	13.51	View chart
Elf Beauty (ELF)	0.6	$8.6M	+53%	44k	196.03	View chart
Msa Safety Inc equity (MSA)	0.6	$8.6M	+57%	44k	193.59	View chart
Grocery Outlet Hldg Corp (GO)	0.6	$8.5M	+112%	296k	28.78	View chart
Spx Corp (SPXC)	0.6	$8.5M	-5%	69k	123.13	View chart
Cabot Corporation (CBT)	0.6	$8.5M	NEW	92k	92.20	View chart
Assurant (AIZ)	0.6	$8.5M	+46%	45k	188.24	View chart
Quaker Chemical Corporation (KWR)	0.6	$8.3M	+50%	41k	205.25	View chart
OSI Systems (OSIS)	0.6	$7.9M	+56%	55k	142.82	View chart
Installed Bldg Prods (IBP)	0.6	$7.9M	NEW	30k	258.73	View chart
Ez (EZPW)	0.6	$7.8M	+4%	686k	11.33	View chart
Aviat Networks (AVNW)	0.6	$7.6M	+54%	199k	38.34	View chart
Maximus (MMS)	0.5	$7.5M	+48%	90k	83.90	View chart
Wingstop (WING)	0.5	$7.3M	+25%	20k	366.40	View chart
Catalyst Pharmaceutical Partners (CPRX)	0.5	$7.3M	+31%	458k	15.94	View chart
Preferred Bank, Los Angeles (PFBC)	0.5	$7.3M	+6%	95k	76.77	View chart
Playa Hotels & Resorts Nv (PLYA)	0.5	$7.3M	+7%	752k	9.70	View chart
Allegheny Technologies Incorporated (ATI)	0.5	$7.3M	+38%	142k	51.17	View chart
Photronics (PLAB)	0.5	$7.3M	+3%	256k	28.32	View chart
Weave Communications (WEAV)	0.5	$7.0M		609k	11.48	View chart
Limbach Hldgs (LMB)	0.5	$6.8M	+65%	165k	41.42	View chart
Credo Technology Group Holding (CRDO)	0.5	$6.8M	NEW	322k	21.19	View chart
Inter Parfums (IPAR)	0.5	$6.8M		48k	140.51	View chart
Rxsight (RXST)	0.5	$6.5M	+52%	127k	51.58	View chart
RPC (RES)	0.5	$6.5M	-2%	839k	7.74	View chart
Monarch Casino & Resort (MCRI)	0.5	$6.5M	+47%	86k	74.99	View chart
G-III Apparel (GIII)	0.5	$6.4M	+12%	221k	29.01	View chart
Krystal Biotech (KRYS)	0.5	$6.4M	NEW	36k	177.93	View chart
Comfort Systems USA (FIX)	0.5	$6.3M	+11%	20k	317.71	View chart
Petiq (PETQ)	0.5	$6.2M	+11%	341k	18.28	View chart
Modine Manufacturing (MOD)	0.4	$6.1M	-25%	65k	95.19	View chart
Abercrombie & Fitch (ANF)	0.4	$6.0M	-12%	48k	125.33	View chart
Trex Company (TREX)	0.4	$6.0M	+49%	60k	99.75	View chart
CryoLife (AORT)	0.4	$6.0M	+9%	282k	21.16	View chart
Allegro Microsystems Ord (ALGM)	0.4	$6.0M	-14%	221k	26.96	View chart
Primo Water (PRMW)	0.4	$5.9M	+34%	324k	18.21	View chart
Grand Canyon Education (LOPE)	0.4	$5.9M	+61%	43k	136.21	View chart
Upwork (UPWK)	0.4	$5.8M	+18%	469k	12.26	View chart
Laredo Petroleum (VTLE)	0.4	$5.7M	+9%	109k	52.54	View chart
Dynavax Technologies (DVAX)	0.4	$5.7M	+10%	463k	12.41	View chart
Evolus (EOLS)	0.4	$5.6M	+6%	397k	14.00	View chart
Onespaworld Holdings Ltd onespaworld hold (OSW)	0.4	$5.6M	+69%	420k	13.23	View chart
Matador Resources (MTDR)	0.4	$5.5M	+56%	82k	66.77	View chart
LeMaitre Vascular (LMAT)	0.4	$5.3M	+22%	80k	66.36	View chart
VSE Corporation (VSEC)	0.4	$5.3M		66k	80.00	View chart
Boot Barn Hldgs (BOOT)	0.4	$5.2M	+5%	54k	95.15	View chart
Simpson Manufacturing (SSD)	0.4	$5.1M	+47%	25k	205.18	View chart
Si-bone (SIBN)	0.4	$5.1M	+8%	310k	16.37	View chart
Rush Street Interactive (RSI)	0.4	$5.1M	NEW	777k	6.51	View chart
M/I Homes (MHO)	0.4	$4.9M	-25%	36k	136.29	View chart
Sun Ctry Airls Hldgs (SNCY)	0.4	$4.9M	+9%	326k	15.09	View chart
Clearwater Paper (CLW)	0.4	$4.9M	+7%	112k	43.73	View chart
Liberty Oilfield Services -a (LBRT)	0.4	$4.9M	+71%	236k	20.72	View chart
Magnolia Oil & Gas Corp magnolia oil & gas corp (MGY)	0.3	$4.8M	+57%	185k	25.95	View chart
Huron Consulting (HURN)	0.3	$4.8M	+3%	49k	96.62	View chart
Rapid7 (RPD)	0.3	$4.6M	+96%	95k	49.04	View chart
H&E Equipment Services (HEES)	0.3	$4.5M	-29%	70k	64.18	View chart
Helix Energy Solutions (HLX)	0.3	$4.4M	+14%	408k	10.84	View chart
Carpenter Technology Corporation (CRS)	0.3	$4.4M	+73%	62k	71.42	View chart
Cellebrite Di Ltd Ordinary Shares (CLBT)	0.3	$4.4M	NEW	398k	11.08	View chart
Oscar Health Cl A Ord (OSCR)	0.3	$4.4M	NEW	295k	14.87	View chart
Scientific Games (LNW)	0.3	$4.3M	+41%	43k	102.09	View chart
Skyward Specialty Insurance Gr (SKWD)	0.3	$4.3M	+41%	116k	37.41	View chart
First Merchants Corporation (FRME)	0.3	$4.3M	+55%	123k	34.90	View chart
Aaon (AAON)	0.3	$4.3M	+33%	48k	88.10	View chart
Gibraltar Industries (ROCK)	0.3	$4.3M	+21%	53k	80.53	View chart
Blackbaud (BLKB)	0.3	$4.2M	+90%	57k	74.14	View chart
ExlService Holdings (EXLS)	0.3	$4.2M	NEW	133k	31.80	View chart
Nov (NOV)	0.3	$4.2M	+38%	217k	19.52	View chart
Gentherm (THRM)	0.3	$4.2M	NEW	74k	57.58	View chart
Healthequity (HQY)	0.3	$4.2M	+32%	51k	81.63	View chart
Sprouts Fmrs Mkt (SFM)	0.3	$4.2M	NEW	65k	64.48	View chart
Duolingo (DUOL)	0.3	$4.2M	NEW	19k	220.58	View chart
Dycom Industries (DY)	0.3	$4.2M	+26%	29k	143.53	View chart
Stride (LRN)	0.3	$4.2M	+55%	66k	63.05	View chart
Fabrinet (FN)	0.3	$4.1M	-34%	22k	189.02	View chart
Jeld-wen Hldg (JELD)	0.3	$4.1M	-25%	193k	21.23	View chart
Cadence Design Systems (CDNS)	0.3	$4.1M	+3%	13k	311.28	View chart
Vita Coco Co Inc/the (COCO)	0.3	$4.0M	+55%	165k	24.43	View chart
Precision Drill (PDS)	0.3	$4.0M		60k	67.29	View chart
Employers Holdings (EIG)	0.3	$3.9M	+4%	86k	45.39	View chart
Navitas Semiconductor Corp-a (NVTS)	0.3	$3.9M	-15%	807k	4.77	View chart
Imax Corp Cad (IMAX)	0.3	$3.8M	NEW	236k	16.17	View chart
HNI Corporation (HNI)	0.3	$3.8M	-46%	83k	45.13	View chart
Backblaze (BLZE)	0.3	$3.7M	NEW	358k	10.23	View chart
Mannkind (MNKD)	0.3	$3.6M	+10%	799k	4.53	View chart
Proto Labs (PRLB)	0.3	$3.5M	-16%	98k	35.75	View chart
Arlo Technologies (ARLO)	0.3	$3.5M	NEW	273k	12.65	View chart
Mercantile Bank (MBWM)	0.2	$3.4M	+4%	89k	38.49	View chart
1st Source Corporation (SRCE)	0.2	$3.3M	+6%	64k	52.42	View chart
Transcat (TRNS)	0.2	$3.2M	+33%	29k	111.43	View chart
Biosante Pharmaceuticals (ANIP)	0.2	$3.0M		44k	69.13	View chart
Dorian Lpg (LPG)	0.2	$2.9M	+15%	76k	38.46	View chart
Hawkins (HWKN)	0.2	$2.9M		37k	76.80	View chart
Rev (REVG)	0.2	$2.8M	-16%	126k	22.09	View chart
Aris Water Solution Inc-a (ARIS)	0.2	$2.8M	NEW	195k	14.15	View chart
Actuant Corp (EPAC)	0.2	$2.8M	+8%	77k	35.66	View chart
Gorman-Rupp Company (GRC)	0.2	$2.7M		69k	39.55	View chart
Oxford Industries (OXM)	0.2	$2.6M	-25%	23k	112.40	View chart
Matrix Service Company (MTRX)	0.2	$2.6M	NEW	199k	13.03	View chart
Taiwan Semiconductor Mfg (TSM)	0.2	$2.5M	+8%	19k	136.05	View chart
Sweetgreen Cl A Ord (SG)	0.2	$2.5M	NEW	98k	25.26	View chart
Powell Industries (POWL)	0.2	$2.4M	-41%	17k	142.30	View chart
Quanterix Ord (QTRX)	0.2	$2.3M	+13%	100k	23.56	View chart
Axogen (AXGN)	0.2	$2.3M	NEW	286k	8.07	View chart
Couchbase (BASE)	0.2	$2.3M	NEW	88k	26.31	View chart
BJ's Restaurants (BJRI)	0.2	$2.3M	-57%	64k	36.18	View chart
Liquidia Technologies (LQDA)	0.2	$2.2M	NEW	150k	14.75	View chart
Apex Technology Acqui-cl A (AVPT)	0.2	$2.1M	+10%	267k	7.92	View chart
Spdr S&p 500 Etf (SPY)	0.1	$1.9M		3.6k	523.02	View chart
Pinduoduo (PDD)	0.1	$1.7M	-42%	15k	116.25	View chart
Microsoft Corporation (MSFT)	0.1	$1.1M		2.7k	420.72	View chart
Tencent Music Entertco L spon ad (TME)	0.1	$895k	NEW	80k	11.19	View chart
Arcos Dorados Holdings (ARCO)	0.1	$874k	+162%	79k	11.12	View chart
JPMorgan Chase & Co. (JPM)	0.1	$762k		3.8k	200.32	View chart
Li Auto (LI)	0.1	$696k	-30%	23k	30.28	View chart
Miniso Group Hold Adr Rep 4 Cl A Ord (MNSO)	0.0	$615k	-62%	30k	20.50	View chart
Makemytrip Limited Mauritius (MMYT)	0.0	$611k	NEW	8.6k	71.05	View chart
Apple (AAPL)	0.0	$580k		3.4k	171.50	View chart
Vtex Registered Shs -a- Isin#kyg9470a1022 (VTEX)	0.0	$543k	+41%	67k	8.17	View chart
Travelers Companies (TRV)	0.0	$469k		2.0k	230.16	View chart
Kanzhun (BZ)	0.0	$438k	NEW	25k	17.53	View chart
MasterCard Incorporated (MA)	0.0	$374k		776.00	481.32	View chart
Johnson & Johnson (JNJ)	0.0	$343k		2.2k	158.22	View chart
Legend Biotech 2 Adr Rep Ord (LEGN)	0.0	$337k	-62%	6.0k	56.09	View chart
Amgen (AMGN)	0.0	$304k		1.1k	284.36	View chart
ResMed (RMD)	0.0	$287k		1.5k	198.03	View chart
TAL Education (TAL)	0.0	$284k	-54%	25k	11.35	View chart
Despegar Com Corp ord (DESP)	0.0	$269k		23k	11.96	View chart
BBB Foods	0.0	$262k	NEW	11k	23.78	View chart
Celsius Holdings (CELH)	0.0	$249k	NEW	3.0k	82.92	View chart
Amer Sports	0.0	$245k	NEW	15k	16.30	View chart
McDonald's Corporation (MCD)	0.0	$238k		844.00	282.00	View chart
Merck & Co (MRK)	0.0	$228k	NEW	1.7k	131.95	View chart
Toyota Motor Corporation (TM)	0.0	$203k	NEW	805.00	251.74	View chart
Xenacare Hldgs	0.0	$0		140k	0.00	View chart
A M R Corporation Xxx res	0.0	$0		18k	0.00	View chart

Past Filings by Oberweis Asset Management

SEC 13F filings are viewable for Oberweis Asset Management going back to 2010

Oberweis Asset Management 2024 Q1 filed May 15, 2024
Oberweis Asset Management 2023 Q4 filed Feb. 14, 2024
Oberweis Asset Management 2023 Q3 filed Nov. 14, 2023
Oberweis Asset Management 2023 Q2 filed Aug. 14, 2023
Oberweis Asset Management 2023 Q1 filed May 15, 2023
Oberweis Asset Management 2022 Q4 filed Feb. 14, 2023
Oberweis Asset Management 2022 Q3 filed Nov. 14, 2022
Oberweis Asset Management 2022 Q2 filed Aug. 15, 2022
Oberweis Asset Management 2022 Q1 filed May 16, 2022
Oberweis Asset Management 2021 Q4 filed Feb. 14, 2022
Oberweis Asset Management 2021 Q3 filed Nov. 15, 2021
Oberweis Asset Management 2021 Q2 filed Aug. 16, 2021
Oberweis Asset Management 2021 Q1 filed May 17, 2021
Oberweis Asset Management 2020 Q4 filed Feb. 16, 2021
Oberweis Asset Management 2020 Q3 filed Nov. 16, 2020
Oberweis Asset Management 2020 Q2 filed Aug. 14, 2020

View all past filings

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