Q4 2024 · 13F-HR
OBERWEIS ASSET MANAGEMENT INC/holdings as filed
Filed 2025-02-14 · accession 0001213900-25-013939
$2.12B
Reported value
196
Positions
2024-12-31
Period end
Holdings as filed
| CUSIP | Ticker | Issuer | Value | % port. | Shares | Class | Voting |
|---|---|---|---|---|---|---|---|
| G25457105 | CRDO | Credo Technology Group | $64.5M | 3.04% | 959,594 | Common | SOLE |
| 000899104 | ADMA | ADMA Biologics, Inc. | $57.3M | 2.70% | 3,342,560 | Common | SOLE |
| G8068L108 | SN | SharkNinja, Inc. | $48.6M | 2.29% | 499,290 | Common | SOLE |
| 98956A105 | ZETA | Zeta Global Holdings Corp. | $33.1M | 1.56% | 1,840,040 | Common | SOLE |
| 830879102 | SKYW | Skywest Inc | $32.0M | 1.51% | 319,150 | Common | SOLE |
| 29261A100 | EHC | Encompass Health Corporation | $31.5M | 1.48% | 340,829 | Common | SOLE |
| 26622P107 | DOCS | Doximity, Inc. | $30.6M | 1.44% | 573,100 | Common | SOLE |
| 92337F107 | VCYT | Veracyte, Inc. | $29.6M | 1.40% | 748,720 | Common | SOLE |
| 34354P105 | FLS | Flowserve Corporation | $27.0M | 1.27% | 468,590 | Common | SOLE |
| 35905A109 | FTDR | Frontdoor, Inc. | $25.6M | 1.20% | 467,500 | Common | SOLE |
| 70202L102 | PSN | Parsons Corp. | $24.7M | 1.16% | 267,470 | Common | SOLE |
| 44930G107 | ICUI | ICU Medical, Inc. | $24.3M | 1.15% | 156,680 | Common | SOLE |
| 184496107 | CLH | Clean Harbors, Inc. | $23.6M | 1.11% | 102,430 | Common | SOLE |
| 258278100 | DORM | Dorman Products, Inc. | $23.3M | 1.10% | 179,720 | Common | SOLE |
| 55405Y100 | MTSI | Macom Technology Solutions | $23.3M | 1.10% | 179,070 | Common | SOLE |
| G3922B107 | G | Genpact Ltd. | $22.5M | 1.06% | 523,600 | Common | SOLE |
| 90385V107 | UCTT | Ultra Clean Holdings | $22.0M | 1.04% | 613,300 | Common | SOLE |
| 002896207 | ANF | Abercrombie & Fitch Co. | $22.0M | 1.04% | 147,300 | Common | SOLE |
| M7516K103 | NVMI | Nova Ltd. | $21.9M | 1.03% | 111,000 | Common | SOLE |
| 750917106 | RMBS | Rambus, Inc | $21.6M | 1.02% | 409,400 | Common | SOLE |
| 465741106 | ITRI | Itron Inc | $21.6M | 1.02% | 199,110 | Common | SOLE |
| 86333M108 | LRN | Stride, Inc. | $21.5M | 1.02% | 207,300 | Common | SOLE |
| 683344105 | ONTO | Onto Innovation, Inc. | $21.5M | 1.02% | 129,235 | Common | SOLE |
| 313855108 | FSS | Federal Signal Corp. | $21.2M | 1.00% | 229,830 | Common | SOLE |
| G5509L101 | LIVN | LivaNova Plc | $20.4M | 0.96% | 440,535 | Common | SOLE |
| 433000106 | HIMS | Hims & Hers Health, Inc. | $20.4M | 0.96% | 843,600 | Common | SOLE |
| 589889104 | MMSI | Merit Medical System Inc | $20.2M | 0.95% | 208,760 | Common | SOLE |
| G48833118 | WFRD | Weatherford International PLC | $19.8M | 0.93% | 275,888 | Common | SOLE |
| 039653100 | ACA | Arcosa, Inc. | $19.6M | 0.93% | 203,000 | Common | SOLE |
| 741623102 | PRMB | Primo Brands Corp. | $19.5M | 0.92% | 632,400 | Common | SOLE |
| 07831C103 | BRBR | BellRing Brands, Inc. | $19.1M | 0.90% | 253,100 | Common | SOLE |
| 74164F103 | PRIM | Primoris Services Corp. | $18.6M | 0.87% | 242,900 | Common | SOLE |
| 03823U102 | AAOI | Applied Optoelectronics Inc. | $18.3M | 0.86% | 495,815 | Common | SOLE |
| 141788109 | CARG | CarGurus, Inc. | $18.3M | 0.86% | 500,000 | Common | SOLE |
| 875372203 | TNDM | Tandem Diabetes Care, Inc. | $18.2M | 0.86% | 506,600 | Common | SOLE |
| 156504300 | CCS | Century Communities, Inc. | $18.2M | 0.86% | 248,000 | Common | SOLE |
| 10316T104 | BOX | Box, Inc. | $17.6M | 0.83% | 558,500 | Common | SOLE |
| 405024100 | HAE | Haemonetics Corp. | $17.6M | 0.83% | 224,920 | Common | SOLE |
| 26856L103 | ELF | e.l.f. Beauty, Inc. | $17.3M | 0.81% | 137,700 | Common | SOLE |
| 004498101 | ACIW | ACI Worldwide Inc. | $17.3M | 0.81% | 333,012 | Common | SOLE |
| 04621X108 | AIZ | Assurant, Inc. | $17.3M | 0.81% | 81,000 | Common | SOLE |
| 364760108 | GAP | The Gap,Inc. | $17.2M | 0.81% | 726,500 | Common | SOLE |
| 671044105 | OSIS | Osi Systems, Inc. | $16.8M | 0.79% | 100,400 | Common | SOLE |
| 243537107 | DECK | Deckers Outdoor Corp. | $16.7M | 0.79% | 82,340 | Common | SOLE |
| 030111207 | AMSC | American Superconductor | $16.4M | 0.77% | 664,400 | Common | SOLE |
| 18467V109 | YOU | Clear Secure, Inc. | $16.2M | 0.77% | 609,400 | Common | SOLE |
| M20791105 | CAMT | Camtek, Ltd. | $16.2M | 0.76% | 199,980 | Common | SOLE |
| 008073108 | AVAV | Aerovironment, Inc. | $15.8M | 0.75% | 102,720 | Common | SOLE |
| M2197Q107 | CLBT | Cellebrite DI Ltd. | $15.3M | 0.72% | 692,910 | Common | SOLE |
| 346375108 | FORM | Formfactor Inc. | $14.8M | 0.70% | 337,480 | Common | SOLE |
| 45245E109 | IMAX | Imax Corp. | $14.8M | 0.70% | 579,600 | Common | SOLE |
| 68213N109 | OMCL | Omnicell, Inc. | $14.8M | 0.70% | 333,200 | Common | SOLE |
| 25402D102 | DOCN | Digital Ocean Holdings, Inc. | $14.5M | 0.68% | 425,700 | Common | SOLE |
| 109194100 | BFAM | Bright Horizons Family Solutio | $14.4M | 0.68% | 129,904 | Common | SOLE |
| 91347P105 | OLED | Universal Display Corp. | $14.3M | 0.68% | 97,993 | Common | SOLE |
| 144285103 | CRS | Carpenter Technology Corp. | $14.2M | 0.67% | 83,441 | Common | SOLE |
| 25659T107 | DLB | Dolby Laboratories, Inc. | $14.1M | 0.67% | 181,000 | Common | SOLE |
| 62482R107 | 07WA | Mr. Cooper Group Inc. | $14.1M | 0.67% | 147,100 | Common | SOLE |
| G3323L100 | FN | Fabrinet | $14.0M | 0.66% | 63,800 | Common | SOLE |
| 358039105 | FRPT | Freshpet, Inc. | $14.0M | 0.66% | 94,300 | Common | SOLE |
| 127055101 | CBT | Cabot Corp. | $14.0M | 0.66% | 152,800 | Common | SOLE |
| 095306106 | BLBD | Blue Bird Corporation | $13.9M | 0.65% | 358,900 | Common | SOLE |
| 85208M102 | SFM | Sprouts Farmers Markets LLC | $13.8M | 0.65% | 108,500 | Common | SOLE |
| 782011100 | RSI | Rush Street Interactive, Inc. | $13.6M | 0.64% | 991,900 | Common | SOLE |
| 705573103 | PEGA | Pegasystems Inc. | $13.6M | 0.64% | 145,500 | Common | SOLE |
| 358054104 | FRSH | Freshworks, Inc. | $13.4M | 0.63% | 826,600 | Common | SOLE |
| G037AX101 | AMBA | Ambarella, Inc. | $13.3M | 0.63% | 182,800 | Common | SOLE |
| 64049M209 | NEO | NeoGenomics, Inc. | $12.7M | 0.60% | 768,700 | Common | SOLE |
| H8088L103 | SRAD | Sportradar Group | $12.6M | 0.60% | 728,900 | Common | SOLE |
| 86272C103 | STRA | Strategic Education, Inc. | $12.6M | 0.59% | 134,500 | Common | SOLE |
| 94724R108 | WEAV | Weave Communications, Inc. | $12.3M | 0.58% | 770,150 | Common | SOLE |
| 74736L109 | QTWO | Q2 Holdings, Inc. | $11.7M | 0.55% | 116,500 | Common | SOLE |
| 458665304 | TILE | Interface, Inc. | $11.7M | 0.55% | 480,100 | Common | SOLE |
| 38526M106 | LOPE | Grand Canyon Education, Inc. | $11.7M | 0.55% | 71,200 | Common | SOLE |
| 26701L100 | BROS | Dutch Bros., Inc. | $11.5M | 0.54% | 219,000 | Common | SOLE |
| 39813G109 | GDYN | Grid Dynamics Holdings, Inc. | $11.2M | 0.53% | 503,000 | Common | SOLE |
| 78473E103 | SPXC | SPX Technologies, Inc. | $11.0M | 0.52% | 75,400 | Common | SOLE |
| G4740B105 | ICHR | Ichor Holdings Ltd. | $10.9M | 0.51% | 337,800 | Common | SOLE |
| 200525103 | CBSH | Commerce Bancshares, Inc. | $10.5M | 0.49% | 167,790 | Common | SOLE |
| 68287N100 | OSPN | OneSpan, Inc. | $10.1M | 0.48% | 545,450 | Common | SOLE |
| 26603R106 | DUOL | Duolingo, Inc. | $10.1M | 0.47% | 31,000 | Common | SOLE |
| 14888U101 | CPRX | Catalyst Pharmaceuticals, Inc. | $9.7M | 0.46% | 467,100 | Common | SOLE |
| 904311107 | UAA | Under Armour, Inc. Class A | $9.5M | 0.45% | 1,153,200 | Common | SOLE |
| 81663L200 | WGS | Genedx Holdings Corp. | $9.5M | 0.45% | 123,500 | Common | SOLE |
| 53263P105 | LMB | Limbach Hldgs, Inc. | $9.5M | 0.45% | 110,800 | Common | SOLE |
| 525558201 | LMAT | LeMaitre Vascular, Inc. | $9.4M | 0.44% | 102,305 | Common | SOLE |
| P73684113 | OSW | OneSpaWorld Holdings Limited | $9.3M | 0.44% | 465,400 | Common | SOLE |
| 14167L103 | CDNA | CareDx, Inc. | $9.1M | 0.43% | 423,471 | Common | SOLE |
| 03076K108 | ABCB | Ameris Bancorp | $9.0M | 0.43% | 144,100 | Common | SOLE |
| 228903100 | AORT | Artivion, Inc | $8.9M | 0.42% | 312,900 | Common | SOLE |
| 33829M101 | FIVE | Five Below | $8.9M | 0.42% | 85,000 | Common | SOLE |
| N70544106 | PL0 | Playa Hotels & Resorts N.V. | $8.9M | 0.42% | 705,100 | Common | SOLE |
| 42226A107 | HQY | HealthEquity Inc. | $8.8M | 0.41% | 91,500 | Common | SOLE |
| 70451X104 | PAYO | Payoneer Global, Inc. | $8.6M | 0.41% | 858,691 | Common | SOLE |
| 78463M107 | SPSC | SPS Comm Inc. | $8.6M | 0.40% | 46,600 | Common | SOLE |
| 92846Q107 | COCO | The Vita Coco Co., Inc. | $8.5M | 0.40% | 231,500 | Common | SOLE |
| 82706C108 | SIMO | Silicon Motion Techn ADR | $8.5M | 0.40% | 157,900 | Common | SOLE |
| 946784105 | WAY | Waystar Holding Corp. | $8.5M | 0.40% | 231,300 | Common | SOLE |
| 302081104 | EXLS | Exlservice Holdings | $8.5M | 0.40% | 190,800 | Common | SOLE |
| 302301106 | EZPW | EZCorp, Inc. | $8.4M | 0.39% | 685,500 | Common | SOLE |
| 576485205 | MTDR | Matador Resources Company | $8.1M | 0.38% | 144,800 | Common | SOLE |
| 44925C103 | ICFI | ICF International, Inc. | $8.1M | 0.38% | 67,671 | Common | SOLE |
| 687793109 | OSCR | Oscar Health, Inc. | $8.0M | 0.38% | 593,850 | Common | SOLE |
| 974155103 | WING | Wingstop, Inc. | $8.0M | 0.38% | 28,000 | Common | SOLE |
| 55305B101 | MHO | M/I Homes, Inc. | $7.7M | 0.36% | 58,200 | Common | SOLE |
| 099406100 | BOOT | Boot Barn Hldgs, Inc. | $7.7M | 0.36% | 50,800 | Common | SOLE |
| 006739106 | ADUS | Addus Homecare Corp. | $7.5M | 0.35% | 59,900 | Common | SOLE |
| G27358103 | DESP1EUR | Despegar Com Corp. | $7.5M | 0.35% | 389,300 | Common | SOLE |
| 30052C107 | EOLS | Evolus, Inc. | $7.5M | 0.35% | 677,600 | Common | SOLE |
| 501147102 | KRYS | Krystal Biotech, Inc. | $7.3M | 0.35% | 46,800 | Common | SOLE |
| 00108J109 | ACMR | ACM Research, Inc. Class A | $7.3M | 0.35% | 485,200 | Common | SOLE |
| 33768G107 | FCFS | FirstCash Holdings, Inc | $7.3M | 0.34% | 70,100 | Common | SOLE |
| 559663109 | MGY | Magnolia Oil & Gas Corp. | $7.2M | 0.34% | 306,300 | Common | SOLE |
| 03209R103 | AMPH | Amphastar Pharmaceuticals, Inc | $6.9M | 0.32% | 184,595 | Common | SOLE |
| 74758T303 | QLYS | Qualys, Inc. | $6.7M | 0.32% | 47,800 | Common | SOLE |
| 830940102 | SKWD | Skyward Specialty Ins Group | $6.7M | 0.31% | 131,600 | Common | SOLE |
| G6331P104 | AOSL | Alpha & Omega Semiconductor | $6.6M | 0.31% | 177,700 | Common | SOLE |
| 09627Y109 | 2655787D | Blueprint Medicines Corp. | $6.5M | 0.31% | 75,000 | Common | SOLE |
| 922280102 | VRNS | Varonis Sys, Inc. | $6.5M | 0.31% | 145,800 | Common | SOLE |
| 30257X104 | FBK | FB Financial Corp. | $6.4M | 0.30% | 123,500 | Common | SOLE |
| 09075A108 | BVS | Bioventus, Inc. | $6.3M | 0.30% | 601,714 | Common | SOLE |
| 04010E109 | AGX | Argan, Inc | $6.3M | 0.30% | 45,900 | Common | SOLE |
| 56117J100 | MBUU | Malibu Boats, Inc. | $6.3M | 0.30% | 166,900 | Common | SOLE |
| 56400P706 | MNKD | Mannkind Corp. | $6.2M | 0.29% | 968,400 | Common | SOLE |
| M81873107 | RDWR | Radware, Ltd. | $6.2M | 0.29% | 274,700 | Common | SOLE |
| 58502B106 | MD | Pediatrix Medical Group, Inc. | $6.1M | 0.29% | 466,600 | Common | SOLE |
| 264147109 | DCO | Ducommun Inc. | $6.1M | 0.29% | 95,700 | Common | SOLE |
| 74319R101 | PRG | PROG Holdings, Inc. | $6.1M | 0.29% | 143,600 | Common | SOLE |
| 497266106 | KEX | Kirby Corp. | $6.0M | 0.28% | 56,950 | Common | SOLE |
| 320817109 | FRME | First Merchants Corporation | $5.8M | 0.27% | 145,600 | Common | SOLE |
| 65406E102 | NIC | Nicolet Bankshares, Inc. | $5.8M | 0.27% | 55,200 | Common | SOLE |
| 420261109 | HWKN | Hawkins, Inc. | $5.6M | 0.26% | 45,700 | Common | SOLE |
| 918284100 | VSEC | VSE Corp. | $5.6M | 0.26% | 58,600 | Common | SOLE |
| 92343x100 | — | Verint Sys Inc. | $5.5M | 0.26% | 201,700 | Common | SOLE |
| 922417100 | VECO | Veeco Instruments, Inc. | $5.5M | 0.26% | 205,800 | Common | SOLE |
| 04041L106 | ARISUSD | Aris Water Solutions, Inc. | $5.5M | 0.26% | 227,635 | Common | SOLE |
| 516806205 | 8LP1 | Vital Energy, Inc. | $5.2M | 0.25% | 168,700 | Common | SOLE |
| 18538R103 | CLW | Clearwater Paper Corp | $5.2M | 0.25% | 175,200 | Common | SOLE |
| 74874Q100 | QNST | QuinStreet, Inc. | $5.2M | 0.24% | 225,000 | Common | SOLE |
| 447462102 | HURN | Huron Consulting Group, Inc. | $5.0M | 0.24% | 40,500 | Common | SOLE |
| 05463X106 | AXGN | AxoGen Inc. | $5.0M | 0.23% | 300,500 | Common | SOLE |
| 292218104 | EIG | Employers Holdings, Inc. | $4.9M | 0.23% | 96,100 | Common | SOLE |
| 053604104 | AVPT | AvePoint, Inc. | $4.9M | 0.23% | 296,300 | Common | SOLE |
| G52694109 | KNSA | Kiniksa Pharmaceuticals, Ltd. | $4.7M | 0.22% | 237,200 | Common | SOLE |
| 42330P107 | HLX | Helix Energy Solutions Group, | $4.7M | 0.22% | 501,700 | Common | SOLE |
| 04963C209 | ATRC | Atricure, Inc. | $4.6M | 0.22% | 151,500 | Common | SOLE |
| 859241101 | STRL | Sterling Construction Co., Inc | $4.6M | 0.22% | 27,300 | Common | SOLE |
| 749527107 | 1RG | Rev Group, Inc. | $4.4M | 0.21% | 139,600 | Common | SOLE |
| 719405102 | PLAB | Photronics, Inc. | $4.4M | 0.21% | 186,000 | Common | SOLE |
| 336901103 | SRCE | 1st Source Corp. | $4.3M | 0.20% | 73,500 | Common | SOLE |
| 63888U108 | NGVC | Natural Grocers by Vitamin Cot | $4.3M | 0.20% | 107,100 | Common | SOLE |
| 74022D407 | PDS | Precision Drilling Corp. | $4.2M | 0.20% | 68,400 | Common | SOLE |
| 09352U108 | BLND | Blend Labs, Inc. | $4.1M | 0.19% | 964,700 | Common | SOLE |
| 749660106 | RES | RPC, Inc. | $3.7M | 0.18% | 629,155 | Common | SOLE |
| 739128106 | POWL | Powell Industries Inc. | $3.7M | 0.18% | 16,800 | Common | SOLE |
| 37253A103 | THRM | Gentherm, Inc. | $3.7M | 0.17% | 92,100 | Common | SOLE |
| 00182C103 | ANIP | ANI Pharmaceuticals, Inc. | $3.6M | 0.17% | 65,600 | Common | SOLE |
| 73931J109 | AIOT | Powerfleet, Inc. | $3.6M | 0.17% | 542,100 | Common | SOLE |
| 913837100 | — | Universal Stainless And Alloy | $3.6M | 0.17% | 80,900 | Common | SOLE |
| 55955D100 | MGNI | Magnite, Inc. | $3.3M | 0.15% | 205,700 | Common | SOLE |
| 05637B105 | BLZE | Backblaze, Inc. | $3.2M | 0.15% | 538,700 | Common | SOLE |
| 91388P105 | ULH | Universal Logistics Holdings | $3.2M | 0.15% | 70,500 | Common | SOLE |
| 383082104 | GRC | The Gorman-Rupp Co. | $3.2M | 0.15% | 83,400 | Common | SOLE |
| 535219109 | LIND | Lindblad Expeditions Holdings, | $3.2M | 0.15% | 266,000 | Common | SOLE |
| 87043Q108 | SG | Sweetgreen, Inc. | $3.1M | 0.15% | 96,201 | Common | SOLE |
| 96924N100 | WLDN | Willdan Group Inc. | $3.1M | 0.14% | 80,100 | Common | SOLE |
| 53635D202 | LQDA | Liquidia Corp. | $3.0M | 0.14% | 250,900 | Common | SOLE |
| 039697107 | ARDX | Ardelyx, Inc. | $2.9M | 0.14% | 579,300 | Common | SOLE |
| 81686C104 | 628 | Semrush Holdings, Inc. | $2.8M | 0.13% | 233,700 | Common | SOLE |
| 576853105 | MTRX | Matrix Service Co. | $2.6M | 0.12% | 221,075 | Common | SOLE |
| 127387108 | CDNS | Cadence Design System, Inc. | $2.5M | 0.12% | 8,200 | Common | SOLE |
| 874039100 | TSM | Taiwan Semiconductor ADR | $2.1M | 0.10% | 10,500 | Common | SOLE |
| 78462F103 | SPY | SPDR S&P 500 ETF Trust | $2.0M | 0.10% | 3,488 | Common | NONE |
| 82509L107 | SHOP | Shopify, Inc. | $1.2M | 0.06% | 11,500 | Common | SOLE |
| 722304102 | PDD | PDD Holdings Inc. ADR | $1.2M | 0.05% | 12,000 | Common | SOLE |
| 594918104 | MSFT | Microsoft Corp. | $1.1M | 0.05% | 2,685 | Common | NONE |
| L8681T102 | SPOT | Spotify Technology S.A. | $1.0M | 0.05% | 2,300 | Common | SOLE |
| 46625H100 | JPM | JP Morgan Chase & Company Inc. | $842,834 | 0.04% | 3,516 | Common | NONE |
| 037833100 | AAPL | Apple, Inc. | $811,994 | 0.04% | 3,243 | Common | NONE |
| V5633W109 | MMYT | MakeMyTrip Ltd. | $712,978 | 0.03% | 6,350 | Common | SOLE |
| 78349D107 | RXST | RxSight, Inc. | $654,595 | 0.03% | 19,040 | Common | SOLE |
| 874080104 | TAL | Tal Education Group ADR | $601,200 | 0.03% | 60,000 | Common | SOLE |
| 36118L106 | FUTU | Futu Holdings Ltd. | $519,935 | 0.02% | 6,500 | Common | SOLE |
| 89417E109 | TRV | The Travelers Co., Inc. | $465,749 | 0.02% | 1,933 | Common | NONE |
| 464287648 | IWO | iShares TR Russell 2000 Growth | $460,512 | 0.02% | 1,600 | Common | NONE |
| 428050108 | HSAI | Hesai Group | $386,960 | 0.02% | 28,000 | Common | SOLE |
| 57636Q104 | MA | Mastercard, Inc. | $377,042 | 0.02% | 716 | Common | NONE |
| 761152107 | RMD | Resmed Inc. | $331,601 | 0.02% | 1,450 | Common | NONE |
| 478160104 | JNJ | Johnson & Johnson | $306,099 | 0.01% | 2,117 | Common | NONE |
| 031162100 | AMGN | Amgen, Inc. | $269,027 | 0.01% | 1,032 | Common | NONE |
| 580135101 | MCD | McDonald's Corporation | $245,833 | 0.01% | 848 | Common | NONE |
| 35969L108 | YMM | Full Truck Alliance Co. Ltd. | $238,040 | 0.01% | 22,000 | Common | SOLE |
| 931142103 | WMT | Wal Mart Stores Inc. | $235,306 | 0.01% | 2,604 | Common | NONE |
| 064058100 | BK | Bank of New York Mellon Corp. | $226,251 | 0.01% | 2,945 | Common | NONE |
| 001055102 | AFL | Aflac Inc. | $206,880 | 0.01% | 2,000 | Common | NONE |
| 98401A106 | — | Xenacare Hldgs, Inc. | $0 | — | 140,000 | Common | NONE |
Source: SEC EDGAR · raw 13F holdings as filed. The Class column shows the option type when reported (Put/Call) or Common when the issuer's equity is held directly. 13F discloses long positions only.