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Yorktown Management & Research Co Inc
Period ended Sep 30, 2026 · Latest filing Oct 28, 2026
These quarterly holdings are delayed and may not include all assets or short positions.
Values are from the reporting date, not current prices or purchase costs.
The same security may appear in multiple rows.
Source: SEC
Reported portfolio value
Quarter-end reported holdings; not current value or investment performance.
View reported values
- Sep 30, 2026: $149,682,310
More quarters will appear as history becomes available.
Top holdings
Top 10 at Sep 30, 2026. Matching entries are combined; security classes and options remain separate. Shares exclude principal amounts; option shares reflect the reported underlying amount.
View top holdings values
- Comfort Systems USA, Inc. · COM · 199908104 · shares: $4,896,106
- IES Holdings, Inc. · COM · 44951W106 · shares: $3,538,302
- Guardant Health, Inc. · COM · 40131M109 · shares: $2,229,500
- Arista Networks, Inc. · COM SHS · 040413205 · shares: $1,995,182
- KLA Corporation · COM NEW · 482480100 · shares: $1,734,877
- iShares Convertible Bond ETF · CONV BD ETF · 46435G102 · shares: $1,694,025
- CECO Environmental Corporation · COM · 125141101 · shares: $1,692,879
- WESCO International, Inc. · COM · 95082P105 · shares: $1,636,135
- Vanguard Emerging Markets Government Bond ETF · EM MK GOV BD ETF · 921946885 · shares: $1,578,250
- StoneX Group, Inc. · COM · 861896108 · shares: $1,527,120
Reported holdings
252 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| Rambus, Inc. | COM | 750917106 | — | 4,950 shares | $528,462 |
| Tyler Technologies, Inc. | COM | 902252105 | — | 1,650 shares | $525,690 |
| Ralph Lauren Corporation | CL A | 751212101 | — | 1,460 shares | $518,402 |
| Credo Technology Group Holding Ltd. | ORDINARY SHARES | G25457105 | — | 2,650 shares | $516,194 |
| Stifel Financial Corporation | COM | 860630102 | — | 7,350 shares | $514,794 |
| ACADIA Pharmaceuticals, Inc. | COM | 004225108 | — | 25,450 shares | $512,818 |
| Cytokinetics, Inc. | COM NEW | 23282W605 | — | 7,750 shares | $510,803 |
| Cognex Corporation | COM | 192422103 | — | 8,400 shares | $509,460 |
| Waystar Holding Corporation | COM | 946784105 | — | 20,050 shares | $508,067 |
| AZZ, Inc. | COM | 002474104 | — | 3,750 shares | $503,963 |
| PDF Solutions, Inc. | COM | 693282105 | — | 9,550 shares | $487,528 |
| Houlihan Lokey, Inc. | CL A | 441593100 | — | 3,850 shares | $486,409 |
| Globus Medical, Inc. | CL A | 379577208 | — | 6,400 shares | $479,360 |
| Mirum Pharmaceuticals, Inc. | COM | 604749101 | — | 5,600 shares | $478,688 |
| InterDigital, Inc. | COM | 45867G101 | — | 1,450 shares | $472,802 |
| Graham Corporation | COM | 384556106 | — | 5,450 shares | $470,390 |
| MasTec, Inc. | COM | 576323109 | — | 2,200 shares | $469,964 |
| NCR Atleos Corporation | COM SHS | 63001N106 | — | 10,400 shares | $469,872 |
| Texas Pacific Land Corporation | COM | 88262P102 | — | 1,440 shares | $469,195 |
| United States Lime & Minerals, Inc. | COM | 911922102 | — | 4,125 shares | $466,579 |
| Hawkins, Inc. | COM | 420261109 | — | 3,700 shares | $466,200 |
| PulteGroup, Inc. | COM | 745867101 | — | 4,000 shares | $464,240 |
| Haemonetics Corporation | COM | 405024100 | — | 4,400 shares | $463,320 |
| RenaissanceRe Holdings Ltd. | COM | G7496G103 | — | 1,450 shares | $461,434 |
| SPX Technologies, Inc. | COM | 78473E103 | — | 2,700 shares | $457,812 |
| Zurn Elkay Water Solutions Corporation | COM | 98983L108 | — | 9,750 shares | $453,083 |
| Archrock, Inc. | COM | 03957W106 | — | 14,900 shares | $451,321 |
| Clean Harbors, Inc. | COM | 184496107 | — | 1,450 shares | $449,834 |
| Cavco Industries, Inc. | COM | 149568107 | — | 800 shares | $448,208 |
| Victory Capital Holdings, Inc. | COM CL A | 92645B103 | — | 4,050 shares | $447,930 |
| On Holding A.G. | NAMEN AKT A | H5919C104 | — | 14,950 shares | $442,670 |
| ADMA Biologics, Inc. | COM | 000899104 | — | 43,500 shares | $436,305 |
| Ondas Holdings, Inc. | COM NEW | 68236H204 | — | 59,250 shares | $434,303 |
| Cactus, Inc. | CL A | 127203107 | — | 6,950 shares | $432,429 |
| Travere Therapeutics, Inc. | COM | 89422G107 | — | 7,300 shares | $429,824 |
| Integer Holdings Corporation | COM | 45826H109 | — | 3,400 shares | $429,590 |
| BBB Foods, Inc. | CL A COM | G0896C103 | — | 8,150 shares | $429,016 |
| Agilysys, Inc. | COM | 00847J105 | — | 4,400 shares | $427,152 |
| Sezzle, Inc. | COM | 78435P105 | — | 3,950 shares | $426,758 |
| Synchrony Financial | COM | 87165B103 | — | 6,000 shares | $425,820 |
| Arcutis Biotherapeutics, Inc. | COM | 03969K108 | — | 16,000 shares | $422,880 |
| GigaCloud Technology, Inc. | CLASS A ORD | G38644103 | — | 8,150 shares | $421,192 |
| Relay Therapeutics, Inc. | COM | 75943R102 | — | 23,200 shares | $418,760 |
| ExlService Holdings, Inc. | COM | 302081104 | — | 12,100 shares | $415,998 |
| Balchem Corporation | COM | 057665200 | — | 2,500 shares | $412,400 |
| Marex Group Ltd. | ORD | G5T40M104 | — | 5,900 shares | $411,584 |
| Allegro MicroSystems, Inc. | COM | 01749D105 | — | 11,300 shares | $410,755 |
| Korn Ferry | COM NEW | 500643200 | — | 5,700 shares | $408,063 |
| Argenx S.E. | SPONSORED ADR | 04016X101 | — | 425 shares | $407,537 |
| Ligand Pharmaceuticals, Inc. | COM NEW | 53220K504 | — | 1,300 shares | $406,081 |
| Tootsie Roll Industries, Inc. | COM | 890516107 | — | 10,609 shares | $398,580 |
| Kodiak Gas Services, Inc. | COM | 50012A108 | — | 7,500 shares | $397,275 |
| Dycom Industries, Inc. | COM | 267475101 | — | 1,476 shares | $397,162 |
| PTC, Inc. | COM | 69370C100 | — | 2,800 shares | $392,840 |
| Navan, Inc. | CL A | 639193101 | — | 18,650 shares | $391,464 |
| Tarsus Pharmaceuticals, Inc. | COM | 87650L103 | — | 4,950 shares | $389,120 |
| elf Beauty, Inc. | COM | 26856L103 | — | 3,850 shares | $388,735 |
| Exelixis, Inc. | COM | 30161Q104 | — | 6,650 shares | $388,427 |
| HEICO Corporation | COM | 422806109 | — | 1,280 shares | $388,070 |
| Futu Holdings Ltd. | SPON ADS CL A | 36118L106 | — | 3,500 shares | $386,925 |
| IREN Ltd. | ORDINARY SHARES | Q4982L109 | — | 9,450 shares | $386,316 |
| Samsara, Inc. | COM CL A | 79589L106 | — | 10,100 shares | $385,113 |
| Select Water Solutions, Inc. | CL A COM | 81617J301 | — | 19,450 shares | $384,916 |
| nVent Electric plc | SHS | G6700G107 | — | 2,400 shares | $384,888 |
| Liquidia Corporation | COM NEW | 53635D202 | — | 12,700 shares | $384,302 |
| V2X, Inc. | COM | 92242T101 | — | 5,400 shares | $382,158 |
| Visteon Corporation | COM NEW | 92839U206 | — | 4,350 shares | $377,058 |
| Enova International, Inc. | COM | 29357K103 | — | 2,250 shares | $375,998 |
| Slide Insurance Holdings, Inc. | COM | 831349105 | — | 16,850 shares | $375,924 |
| CSW Industrials, Inc. | COM | 126402106 | — | 1,300 shares | $374,504 |
| Ategrity Specialty Holdings, LLC | COM | 04681Y103 | — | 14,650 shares | $374,308 |
| Kadant, Inc. | COM | 48282T104 | — | 1,425 shares | $372,666 |
| RadNet, Inc. | COM | 750491102 | — | 5,350 shares | $368,829 |
| WisdomTree, Inc. | COM | 97717P104 | — | 15,150 shares | $367,994 |
| RLI Corporation | COM | 749607107 | — | 6,650 shares | $367,812 |
| Billiontoone, Inc. | CL A | 090168105 | — | 3,450 shares | $367,218 |
| Alkermes plc | SHS | G01767105 | — | 8,900 shares | $360,628 |
| Lantheus Holdings, Inc. | COM | 516544103 | — | 3,600 shares | $358,308 |
| Veracyte, Inc. | COM | 92337F107 | — | 7,750 shares | $356,810 |
| Kinsale Capital Group, Inc. | COM | 49714P108 | — | 1,100 shares | $355,025 |
| Transcat, Inc. | COM | 893529107 | — | 4,000 shares | $353,680 |
| Napco Security Technologies, Inc. | COM | 630402105 | — | 9,900 shares | $352,638 |
| Dynatrace, Inc. | COM NEW | 268150109 | — | 6,050 shares | $349,327 |
| Old National Bancorp | COM | 680033107 | — | 14,150 shares | $348,656 |
| CBRE Group, Inc. | CL A | 12504L109 | — | 2,700 shares | $346,869 |
| Corp America Airports S.A. | COM | L1995B107 | — | 13,600 shares | $345,984 |
| Patria Investments Ltd. | COM CL A | G69451105 | — | 34,000 shares | $345,100 |
| Cellebrite DI Ltd | ORDINARY SHARES | M2197Q107 | — | 30,600 shares | $344,556 |
| TTM Technologies, Inc. | COM | 87305R109 | — | 2,800 shares | $343,952 |
| Evolv Technologies Holdings, Inc. | COM CL A | 30049H102 | — | 72,500 shares | $337,125 |
| SmartFinancial, Inc. | COM NEW | 83190L208 | — | 6,750 shares | $334,598 |
| Blue Bird Corporation | COM | 095306106 | — | 6,025 shares | $334,388 |
| Riot Platforms, Inc. | COM | 767292105 | — | 16,500 shares | $332,475 |
| Grupo Aeroportuario del Sureste S.A.B. de C.V. | SPON ADR SER B | 40051E202 | — | 1,390 shares | $326,914 |
| Liquidity Services, Inc. | COM | 53635B107 | — | 7,600 shares | $325,508 |
| Paymentus Holdings, Inc. | COM CL A | 70439P108 | — | 10,550 shares | $323,252 |
| Gorman-Rupp Company (The) | COM | 383082104 | — | 4,300 shares | $320,264 |
| Guardian Pharmacy Services, Inc. | CL A | 40145W101 | — | 7,850 shares | $320,123 |
| Rhythm Pharmaceuticals, Inc. | COM | 76243J105 | — | 3,300 shares | $314,210 |
| Schneider National, Inc. | CL B | 80689H102 | — | 9,800 shares | $312,130 |