Yorktown Management & Research Co Inc
In its 13F for Q2 2026 (holdings as of June 30, 2026, filed July 23, 2026), Yorktown Management & Research Co Inc reported 249 stock positions worth $163.3 million. Its top holding was Comfort Systems USA (FIX) at 3.6% of the portfolio, followed by Ies (IESC, 2.5%) and KLA (KLAC, 1.6%). Compared with Q1 2026, it opened 82 new positions, sold out of 47, added to 22 and reduced 12. The biggest buy was a new position in Bloom Energy Class A (BE) and the biggest sale Palo Alto Networks (PANW, shares −77%).
- Most Recent 13F
- Q2 2026
- Location
- Forest, VA
- CIK
- 0001313559
- Portfolio Value
- $163.3M (Q2 2026)
- SEC Filing
- 0001193125-26-313433 ↗ filed Jul 23, 2026
Holdings Value
Holdings 249 stocks · $163.3M
| FIX Comfort Systems USA Inc. | 3.59% | 2,960 | $5.9M | Reduce -7.8% |
| IESC Ies Holdings Inc. | 2.48% | 5,510 | $4.0M | Reduce -13.1% |
| KLAC KLA Corp. | 1.64% | 8,900 | $2.7M | No change |
| ICVT iShares Convertible Bond ETF | 1.49% | 20,000 | $2.4M | Reduce -13.0% |
| CWB SS SPDR BB Conv Sec ETF | 1.32% | 20,000 | $2.2M | Reduce -13.0% |
| VWOB Vanguard Emerg MKTS Gov BND | 1.24% | 30,000 | $2.0M | No change |
| GH Guardant Health Inc. | 1.15% | 12,500 | $1.9M | Add +41.2% |
| SNEX Stonex Group Inc. | 1.14% | 15,750 | $1.9M | No change |
| FN Fabrinet | 1.08% | 3,150 | $1.8M | Reduce -17.1% |
| NVMI Nova Ltd. | 1.07% | 3,220 | $1.7M | Reduce -14.8% |
| ACMR Acm Research Inc. Class A | 1.03% | 13,300 | $1.7M | No change |
| ANET Arista Networks Inc. | 1.02% | 9,800 | $1.7M | No change |
| LQD Ishr Ibx Usd Invgd CB ETF-Ui | 1.00% | 15,000 | $1.6M | Add +7.1% |
| WCC Wesco International Inc. | 0.96% | 4,550 | $1.6M | No change |
| FTAI Ftai Aviation Ltd. | 0.96% | 5,800 | $1.6M | No change |
| CECO Ceco Environmental Corp. | 0.96% | 17,209 | $1.6M | Add +33.4% |
| MLI Mueller Industries Inc. | 0.93% | 12,400 | $1.5M | Reduce -14.2% |
| RBC RBC Bearings Inc. | 0.78% | 1,970 | $1.3M | No change |
| BE Bloom Energy Corp. Class A | 0.77% | 4,150 | $1.3M | New |
| AXSM Axsome Therapeutics Inc. | 0.73% | 4,850 | $1.2M | Add +34.7% |
| DY Dycom Industries Inc. | 0.72% | 2,326 | $1.2M | Add +57.6% |
| WWD Woodward Inc. | 0.72% | 2,750 | $1.2M | No change |
| CAMT Camtek Ltd. | 0.70% | 7,050 | $1.1M | No change |
| APLD Applied Digital Corp. | 0.69% | 30,350 | $1.1M | No change |
| SMTC Semtech Corp. | 0.68% | 6,850 | $1.1M | New |
| MOD Modine Manufacturing Co. | 0.68% | 4,150 | $1.1M | No change |
| IBKR Interactive Brokers Gro Class A | 0.66% | 12,400 | $1.1M | No change |
| FCFS Firstcash Holdings Inc. | 0.66% | 4,950 | $1.1M | No change |
| XMTR Xometry Inc. Class A | 0.65% | 11,050 | $1.1M | No change |
| CW Curtiss-Wright Corp. | 0.65% | 1,400 | $1.1M | No change |
| AXON Axon Enterprise Inc. | 0.64% | 1,875 | $1.1M | Reduce -29.3% |
| SPXC SPX Technologies Inc. | 0.64% | 4,250 | $1.0M | Add +57.4% |
| DDOG Datadog Inc. Class A | 0.64% | 4,000 | $1.0M | No change |
| DGII Digi International Inc. | 0.63% | 13,700 | $1.0M | No change |
| LQDA Liquidia Corp. | 0.62% | 12,700 | $1.0M | New |
| IONQ Ionq Inc. | 0.61% | 18,700 | $996K | Add +167.1% |
| IBP Installed Building Products | 0.61% | 4,300 | $988K | Add +48.3% |
| RJF Raymond James Financial Inc. | 0.60% | 6,450 | $981K | No change |
| PFF iShares Preferred & Income S | 0.60% | 32,000 | $976K | No change |
| LITE Lumentum Holdings Inc. | 0.59% | 1,125 | $965K | No change |
| FPS Forgent Power Solutions Class A | 0.59% | 17,200 | $961K | New |
| CASY Casey's General Stores Inc. | 0.58% | 1,200 | $954K | No change |
| MEDP Medpace Holdings Inc. | 0.58% | 1,800 | $953K | No change |
| PEN Penumbra Inc. | 0.58% | 3,000 | $947K | No change |
| HASI Ha Sustainable Infrastructur | 0.56% | 23,550 | $920K | No change |
| MTZ Mastec Inc. | 0.56% | 2,200 | $915K | No change |
| BWXT BWX Technologies Inc. | 0.56% | 4,700 | $915K | No change |
| MPWR Monolithic Power Systems Inc. | 0.55% | 650 | $899K | No change |
| LFST Lifestance Health Group Inc. | 0.55% | 83,600 | $895K | New |
| CLS Celestica Inc. | 0.55% | 2,450 | $894K | No change |
| PFGC Performance Food Group Co. | 0.54% | 7,880 | $881K | No change |
| INSM Insmed Inc. | 0.52% | 7,925 | $845K | No change |
| DNLI Denali Therapeutics Inc. | 0.51% | 32,100 | $826K | New |
| HWKN Hawkins Inc. | 0.50% | 5,750 | $817K | No change |
| CIEN Ciena Corp. | 0.50% | 1,650 | $809K | No change |
| LPLA LPL Financial Holdings Inc. | 0.49% | 2,850 | $803K | Add +35.7% |
| RSI Rush Street Interactive Inc. | 0.49% | 26,900 | $800K | No change |
| HYG Ishr Ibx Usd Hiyld CB ETF-Ui | 0.49% | 10,000 | $800K | No change |
| ALGM Allegro Microsystems Inc. | 0.48% | 11,300 | $787K | No change |
| ESE Esco Technologies Inc. | 0.48% | 2,225 | $779K | No change |
| SAIA Saia Inc. | 0.47% | 1,840 | $775K | No change |
| BEAM Beam Therapeutics Inc. | 0.47% | 22,550 | $774K | New |
| DOCN Digitalocean Holdings Inc. | 0.47% | 4,900 | $769K | No change |
| GFI Gold Fields Ltd.-Spons ADR | 0.47% | 22,750 | $764K | No change |
| FTNT Fortinet Inc. | 0.47% | 4,950 | $760K | No change |
| TGTX TG Therapeutics Inc. | 0.46% | 13,700 | $753K | No change |
| KRYS Krystal Biotech Inc. | 0.46% | 2,000 | $743K | No change |
| ENSG The Ensign Group Inc. | 0.45% | 4,600 | $737K | Add +31.4% |
| SNX TD Synnex Corp. | 0.44% | 2,700 | $722K | No change |
| CRDO Credo Technology Group Holdi | 0.44% | 2,650 | $721K | No change |
| PANW Palo Alto Networks Inc. | 0.44% | 2,090 | $713K | Reduce -76.5% |
| SEZL Sezzle Inc. | 0.42% | 3,950 | $678K | No change |
| CHEF The Chefs' Warehouse Inc. | 0.41% | 7,050 | $678K | No change |
| PDFS PDF Solutions Inc. | 0.41% | 9,550 | $676K | No change |
| GHM Graham Corp. | 0.41% | 5,450 | $675K | No change |
| LTH Life Time Group Holdings Inc. | 0.41% | 16,450 | $672K | New |
| PACS Pacs Group Inc. | 0.41% | 15,600 | $665K | New |
| KKR KKR & Co. Inc. | 0.40% | 7,200 | $661K | No change |
| CYTK Cytokinetics Inc. | 0.40% | 7,750 | $660K | Add +63.2% |
| RMBS Rambus Inc. | 0.40% | 4,950 | $657K | Reduce -29.3% |
| MIRM Mirum Pharmaceuticals Inc. | 0.40% | 5,600 | $656K | Add +119.6% |
| ITT Itt Inc. | 0.40% | 3,300 | $653K | No change |
| DAVE Dave Inc. | 0.40% | 1,750 | $652K | No change |
| USLM United States Lime & Mineral | 0.40% | 6,225 | $652K | No change |
| U Unity Software Inc. | 0.39% | 22,550 | $644K | New |
| ACAD Acadia Pharmaceuticals Inc. | 0.39% | 25,450 | $644K | Add +111.2% |
| FELE Franklin Electric Co. Inc. | 0.39% | 6,000 | $643K | No change |
| CNM Core & Main Inc. Class A | 0.39% | 13,300 | $642K | No change |
| APG Api Group Corp. | 0.39% | 15,150 | $642K | No change |
| NBIX Neurocrine Biosciences Inc. | 0.39% | 3,750 | $632K | Add +66.7% |
| TPL Texas Pacific Land Corp. | 0.39% | 1,440 | $630K | No change |
| SYBT Stock Yards Bancorp Inc. | 0.38% | 8,100 | $619K | No change |
| HALO Halozyme Therapeutics Inc. | 0.38% | 7,850 | $614K | Add +76.4% |
| SUNB Sunbelt Rentals Holdings Inc. | 0.38% | 8,200 | $613K | No change |
| LAD Lithia Motors Inc. | 0.37% | 2,100 | $610K | No change |
| TDY Teledyne Technologies Inc. | 0.37% | 900 | $600K | No change |
| WAL Western Alliance Bancorp | 0.36% | 7,200 | $592K | Add +94.6% |
| EXP Eagle Materials Inc. | 0.36% | 2,630 | $592K | No change |
| PAM Pampa Energia SA-Spon ADR | 0.36% | 7,200 | $591K | No change |
| EMBJ Embraer SA-Spon ADR | 0.36% | 9,200 | $587K | Add +119.0% |
Portfolio Sells Q1 2026 → Q2 2026
| PANW Palo Alto Networks Inc. | Reduce -76.5% | 0.44% | −0.76 |
| FN Fabrinet | Reduce -17.1% | 1.08% | −0.57 |
| PARR Par Pacific Holdings Inc. | Sold out | 0.00% | −0.52 |
| ZETA Zeta Global Holdings Corp. Class A | Sold out | 0.00% | −0.51 |
| PRIM Primoris Services Corp. | Reduce -33.3% | 0.25% | −0.49 |
| TMDX Transmedics Group Inc. | Sold out | 0.00% | −0.48 |
| ICVT iShares Convertible Bond ETF | Reduce -13.0% | 1.49% | −0.47 |
| CWB SS SPDR BB Conv Sec ETF | Reduce -13.0% | 1.32% | −0.44 |
| BROS Dutch Bros Inc. Class A | Sold out | 0.00% | −0.44 |
| MLI Mueller Industries Inc. | Reduce -14.2% | 0.93% | −0.41 |
| CALX Calix Inc. | Sold out | 0.00% | −0.37 |
| QLYS Qualys Inc. | Sold out | 0.00% | −0.35 |
| BL Blackline Inc. | Sold out | 0.00% | −0.34 |
| HRI Herc Holdings Inc. | Sold out | 0.00% | −0.33 |
| CWAN Clearwater Analytics HDS-A | Sold out | 0.00% | −0.33 |
| SEMR Semrush Holdings Inc. Class A | Sold out | 0.00% | −0.32 |
| LIF LIFE360 Inc. | Sold out | 0.00% | −0.31 |
| AVAV Aerovironment Inc. | Sold out | 0.00% | −0.31 |
| NVMI Nova Ltd. | Reduce -14.8% | 1.07% | −0.30 |
| RDDT Reddit Inc. Class A | Sold out | 0.00% | −0.30 |
| AXON Axon Enterprise Inc. | Reduce -29.3% | 0.64% | −0.30 |
| VSEC Vse Corp. | Sold out | 0.00% | −0.28 |
| HLNE Hamilton Lane Inc. Class A | Sold out | 0.00% | −0.27 |
| BMNR Bitmine Immersion Technologi | Sold out | 0.00% | −0.27 |
| OKTA Okta Inc. | Sold out | 0.00% | −0.27 |
| THR Thermon Group Holdings Inc. | Sold out | 0.00% | −0.27 |
| APPF Appfolio Inc. Class A | Sold out | 0.00% | −0.26 |
| PCTY Paylocity Holding Corp. | Sold out | 0.00% | −0.25 |
| METC Ramaco Resources Inc. Class A | Sold out | 0.00% | −0.25 |
| OS Onestream Inc. | Sold out | 0.00% | −0.25 |
| VEEV Veeva Systems Inc. Class A | Sold out | 0.00% | −0.24 |
| DT Dynatrace Inc. | Sold out | 0.00% | −0.23 |
| PAY Paymentus Holdings Inc. Class A | Sold out | 0.00% | −0.23 |
| PODD Insulet Corp. | Sold out | 0.00% | −0.23 |
| ITRI Itron Inc. | Sold out | 0.00% | −0.22 |
| RYAN Ryan Specialty Holdings Inc. | Sold out | 0.00% | −0.22 |
| KRMN Karman Holdings Inc. | Sold out | 0.00% | −0.22 |
| CHYM Chime Financial Inc. Class A | Sold out | 0.00% | −0.22 |
| CHDN Churchill Downs Inc. | Sold out | 0.00% | −0.21 |
| PAYC Paycom Software Inc. | Sold out | 0.00% | −0.21 |
| BMI Badger Meter Inc. | Sold out | 0.00% | −0.21 |
| BAM Brookfield Asset Mgmt-A | Sold out | 0.00% | −0.21 |
| SPSC SPS Commerce Inc. | Sold out | 0.00% | −0.20 |
| PLMR Palomar Holdings Inc. | Sold out | 0.00% | −0.20 |
| VEL Velocity Financial Inc. | Sold out | 0.00% | −0.20 |
| GPI Group 1 Automotive Inc. | Sold out | 0.00% | −0.19 |
| KNSL Kinsale Capital Group Inc. | Sold out | 0.00% | −0.19 |
| OLLI Ollie's Bargain Outlet Holdi | Sold out | 0.00% | −0.18 |
| IRMD Iradimed Corp. | Sold out | 0.00% | −0.18 |
| DKNG Draftkings Inc. Class A | Sold out | 0.00% | −0.18 |
Portfolio Buys Q1 2026 → Q2 2026
| BE Bloom Energy Corp. Class A | New | 0.77% | +0.77 |
| SMTC Semtech Corp. | New | 0.68% | +0.68 |
| LQDA Liquidia Corp. | New | 0.62% | +0.62 |
| FPS Forgent Power Solutions Class A | New | 0.59% | +0.59 |
| LFST Lifestance Health Group Inc. | New | 0.55% | +0.55 |
| DNLI Denali Therapeutics Inc. | New | 0.51% | +0.51 |
| BEAM Beam Therapeutics Inc. | New | 0.47% | +0.47 |
| GH Guardant Health Inc. | Add +41.2% | 1.15% | +0.46 |
| IONQ Ionq Inc. | Add +167.1% | 0.61% | +0.44 |
| LTH Life Time Group Holdings Inc. | New | 0.41% | +0.41 |
| PACS Pacs Group Inc. | New | 0.41% | +0.41 |
| U Unity Software Inc. | New | 0.39% | +0.39 |
| CORT Corcept Therapeutics Inc. | New | 0.35% | +0.35 |
| HNGE Hinge Health Inc. Class A | New | 0.34% | +0.34 |
| TWST Twist Bioscience Corp. | New | 0.32% | +0.32 |
| TTMI TTM Technologies | New | 0.32% | +0.32 |
| CECO Ceco Environmental Corp. | Add +33.4% | 0.96% | +0.31 |
| BRKR Bruker Corp. | New | 0.31% | +0.31 |
| OSCR Oscar Health Inc. Class A | New | 0.30% | +0.30 |
| DY Dycom Industries Inc. | Add +57.6% | 0.72% | +0.30 |
| ONDS Ondas Inc. | New | 0.30% | +0.30 |
| ALKS Alkermes PLC | New | 0.29% | +0.29 |
| VCYT Veracyte Inc. | New | 0.28% | +0.28 |
| RIOT Riot Platforms Inc. | New | 0.28% | +0.28 |
| RLAY Relay Therapeutics Inc. | New | 0.27% | +0.27 |
| VC Visteon Corp. | New | 0.26% | +0.26 |
| NAVN Navan Inc. Class A | New | 0.26% | +0.26 |
| ARQT Arcutis Biotherapeutics Inc. | New | 0.26% | +0.26 |
| TVTX Travere Therapeutics Inc. | New | 0.25% | +0.25 |
| BLLN Billiontoone Inc. Class A | New | 0.25% | +0.25 |
| LEGN Legend Biotech Corp.-ADR | New | 0.25% | +0.25 |
| LGND Ligand Pharmaceuticals | New | 0.25% | +0.25 |
| LNTH Lantheus Holdings Inc. | New | 0.24% | +0.24 |
| AIR Aar Corp. | New | 0.24% | +0.24 |
| GRAL Grail Inc. | New | 0.24% | +0.24 |
| GVA Granite Construction Inc. | New | 0.23% | +0.23 |
| TRNS Transcat Inc. | New | 0.23% | +0.23 |
| RYTM Rhythm Pharmaceuticals Inc. | New | 0.22% | +0.22 |
| WBI Waterbridge Infrastruc Class A | New | 0.22% | +0.22 |
| EXEL Exelixis Inc. | New | 0.22% | +0.22 |
| RARE Ultragenyx Pharmaceutical Inc. | New | 0.22% | +0.22 |
| SNDR Schneider National Inc. Class B | New | 0.22% | +0.22 |
| AXSM Axsome Therapeutics Inc. | Add +34.7% | 0.73% | +0.22 |
| ASIC Ategrity Specialty Holdings | New | 0.22% | +0.22 |
| SRRK Scholar Rock Holding Corp. | New | 0.22% | +0.22 |
| IONS Ionis Pharmaceuticals Inc. | New | 0.21% | +0.21 |
| AAOI Applied Optoelectronics Inc. | New | 0.21% | +0.21 |
| VCTR Victory Capital Holding - A | New | 0.21% | +0.21 |
| TBBB BBB Foods Inc. Class A | New | 0.21% | +0.21 |
| MIRM Mirum Pharmaceuticals Inc. | Add +119.6% | 0.40% | +0.20 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 249 | $163.3M | FIX, IESC, KLAC, ICVT, CWB |
| Q1 2026 | 214 | $119.5M | FIX, IESC, ICVT, CWB, FN |
| Q4 2025 | 219 | $125.1M | FIX, ICVT, IESC, CWB, VWOB |
| Q3 2025 | 206 | $125.4M | ICVT, CWB, FIX, IESC, PFF |
| Q2 2025 | 208 | $104.8M | AXON, LPLA, IESC, FIX, CYBR |
| Q1 2025 | 206 | $92.0M | LPLA, AXON, CYBR, FIX, MLI |
| Q4 2024 | 204 | $104.0M | LPLA, FIX, AXON, MLI, IESC |
| Q3 2024 | 194 | $97.6M | FIX, MLI, LPLA, EXP, IESC |
| Q2 2024 | 189 | $93.1M | SMCI, LPLA, MLI, KLAC, CAMT |
| Q1 2024 | 217 | $105.1M | SMCI, MLI, LPLA, RMBS, SAIA |