Yorktown Management & Research Co Inc
In its 13F for Q1 2026 (holdings as of March 31, 2026, filed April 20, 2026), Yorktown Management & Research Co Inc reported 214 stock positions worth $119.5 million. Its top holding was Comfort Systems USA (FIX) at 3.7% of the portfolio, followed by Ies (IESC, 2.5%) and iShares Convertible Bond ETF (ICVT, 2.0%). Compared with Q4 2025, it opened 35 new positions, sold out of 40, added to 17 and reduced 15. The biggest buy was a new position in Palo Alto Networks (PANW) and the biggest sale an exit from Cyberark Software Ltd./Israel (CYBR).
- Most Recent 13F
- Q2 2026
- Location
- Forest, VA
- CIK
- 0001313559
- Portfolio Value
- $119.5M (Q1 2026)
- SEC Filing
- 0001193125-26-162911 ↗ filed Apr 20, 2026
Holdings Value
Holdings 214 stocks · $119.5M
| FIX Comfort Systems USA Inc. | 3.70% | 3,210 | $4.4M | Reduce -8.3% |
| IESC Ies Holdings Inc. | 2.53% | 6,340 | $3.0M | No change |
| ICVT iShares Convertible Bond ETF | 1.96% | 23,000 | $2.3M | Reduce -14.8% |
| CWB SS SPDR BB Conv Sec ETF | 1.76% | 23,000 | $2.1M | Reduce -14.8% |
| FN Fabrinet | 1.66% | 3,800 | $2.0M | No change |
| VWOB Vanguard Emerg MKTS Gov BND | 1.65% | 30,000 | $2.0M | Reduce -9.1% |
| NVMI Nova Ltd. | 1.37% | 3,780 | $1.6M | Add +18.1% |
| MLI Mueller Industries Inc. | 1.34% | 14,450 | $1.6M | No change |
| LQD Ishr Ibx Usd Invgd CB ETF-Ui | 1.28% | 14,000 | $1.5M | Add +75.0% |
| PANW Palo Alto Networks Inc. | 1.20% | 8,911 | $1.4M | New |
| FTAI Ftai Aviation Ltd. | 1.19% | 5,800 | $1.4M | No change |
| KLAC KLA Corp. | 1.10% | 890 | $1.3M | No change |
| INSM Insmed Inc. | 1.08% | 7,925 | $1.3M | Reduce -17.4% |
| SNEX Stonex Group Inc. | 1.06% | 15,750 | $1.3M | Add +50.0% |
| WCC Wesco International Inc. | 1.04% | 4,550 | $1.2M | No change |
| ANET Arista Networks Inc. | 1.01% | 9,800 | $1.2M | No change |
| AXON Axon Enterprise Inc. | 0.94% | 2,650 | $1.1M | No change |
| RBC RBC Bearings Inc. | 0.90% | 1,970 | $1.1M | No change |
| CAMT Camtek Ltd. | 0.89% | 7,050 | $1.1M | Add +35.6% |
| GFI Gold Fields Ltd.-Spons ADR | 0.86% | 22,750 | $1.0M | No change |
| PEN Penumbra Inc. | 0.82% | 3,000 | $985K | No change |
| WWD Woodward Inc. | 0.82% | 2,750 | $984K | No change |
| PFF iShares Preferred & Income S | 0.81% | 32,000 | $970K | Reduce -20.0% |
| BWXT BWX Technologies Inc. | 0.80% | 4,700 | $961K | No change |
| CW Curtiss-Wright Corp. | 0.80% | 1,400 | $954K | No change |
| RJF Raymond James Financial Inc. | 0.78% | 6,450 | $934K | No change |
| FCFS Firstcash Holdings Inc. | 0.78% | 4,950 | $931K | No change |
| MOD Modine Manufacturing Co. | 0.75% | 4,150 | $899K | No change |
| HWKN Hawkins Inc. | 0.74% | 5,750 | $883K | Add +11.7% |
| PRIM Primoris Services Corp. | 0.74% | 6,150 | $880K | No change |
| CASY Casey's General Stores Inc. | 0.73% | 1,200 | $873K | No change |
| HASI Ha Sustainable Infrastructur | 0.72% | 23,550 | $865K | No change |
| MEDP Medpace Holdings Inc. | 0.72% | 1,800 | $864K | No change |
| IBKR Interactive Brokers Gro Class A | 0.70% | 12,400 | $832K | No change |
| GH Guardant Health Inc. | 0.68% | 8,850 | $817K | Add +59.5% |
| USLM United States Lime & Mineral | 0.68% | 6,225 | $813K | No change |
| HYG Ishr Ibx Usd Hiyld CB ETF-Ui | 0.67% | 10,000 | $796K | Add +25.0% |
| LITE Lumentum Holdings Inc. | 0.66% | 1,125 | $791K | New |
| IBP Installed Building Products | 0.64% | 2,900 | $769K | No change |
| CECO Ceco Environmental Corp. | 0.64% | 12,900 | $769K | Add +33.0% |
| APLD Applied Digital Corp. | 0.60% | 30,350 | $721K | No change |
| MPWR Monolithic Power Systems Inc. | 0.59% | 650 | $711K | No change |
| MTZ Mastec Inc. | 0.59% | 2,200 | $708K | No change |
| ENSG The Ensign Group Inc. | 0.59% | 3,500 | $705K | No change |
| CLS Celestica Inc. | 0.58% | 2,450 | $690K | No change |
| TPL Texas Pacific Land Corp. | 0.57% | 1,440 | $683K | No change |
| PFGC Performance Food Group Co. | 0.56% | 7,880 | $675K | No change |
| KKR KKR & Co. Inc. | 0.56% | 7,200 | $666K | No change |
| DGII Digi International Inc. | 0.55% | 13,700 | $660K | No change |
| CNM Core & Main Inc. Class A | 0.55% | 13,300 | $657K | No change |
| SAIA Saia Inc. | 0.54% | 1,840 | $646K | No change |
| CIEN Ciena Corp. | 0.54% | 1,650 | $641K | No change |
| PAM Pampa Energia SA-Spon ADR | 0.53% | 7,200 | $637K | No change |
| LPLA LPL Financial Holdings Inc. | 0.53% | 2,100 | $632K | Reduce -60.3% |
| ITT Itt Inc. | 0.53% | 3,300 | $629K | No change |
| ESE Esco Technologies Inc. | 0.52% | 2,225 | $626K | Add +97.8% |
| PARR Par Pacific Holdings Inc. | 0.52% | 9,900 | $620K | No change |
| APG Api Group Corp. | 0.51% | 15,150 | $614K | No change |
| ZETA Zeta Global Holdings Corp. Class A | 0.51% | 38,350 | $611K | No change |
| AXSM Axsome Therapeutics Inc. | 0.51% | 3,600 | $608K | Add +111.8% |
| RMBS Rambus Inc. | 0.50% | 7,000 | $602K | No change |
| RSI Rush Street Interactive Inc. | 0.49% | 26,900 | $585K | Reduce -31.7% |
| TMDX Transmedics Group Inc. | 0.48% | 5,800 | $577K | Add +65.7% |
| TYL Tyler Technologies Inc. | 0.47% | 1,650 | $565K | No change |
| FELE Franklin Electric Co. Inc. | 0.46% | 6,000 | $553K | No change |
| HLI Houlihan Lokey Inc. | 0.46% | 3,850 | $553K | No change |
| GMED Globus Medical Inc. Class A | 0.46% | 6,400 | $551K | No change |
| TDY Teledyne Technologies Inc. | 0.46% | 900 | $545K | No change |
| SF Stifel Financial Corp. | 0.45% | 7,350 | $543K | No change |
| SPXC SPX Technologies Inc. | 0.45% | 2,700 | $540K | No change |
| DLO Dlocal Ltd. | 0.45% | 41,500 | $538K | Reduce -31.6% |
| SYBT Stock Yards Bancorp Inc. | 0.45% | 8,100 | $537K | No change |
| FRHC Freedom Holding Corp. | 0.45% | 3,700 | $536K | No change |
| SUNB Sunbelt Rentals Holdings Inc. | 0.45% | 8,200 | $534K | New |
| ROAD Construction Partners Inc. Class A | 0.45% | 4,800 | $533K | No change |
| LAD Lithia Motors Inc. | 0.44% | 2,100 | $524K | No change |
| ACMR Acm Research Inc. Class A | 0.44% | 13,300 | $523K | No change |
| BROS Dutch Bros Inc. Class A | 0.44% | 10,300 | $522K | No change |
| KRYS Krystal Biotech Inc. | 0.43% | 2,000 | $517K | No change |
| AX Axos Financial Inc. | 0.43% | 6,000 | $511K | New |
| DY Dycom Industries Inc. | 0.42% | 1,476 | $500K | No change |
| EXP Eagle Materials Inc. | 0.42% | 2,630 | $498K | Add +59.4% |
| RNG Ringcentral Inc. Class A | 0.41% | 13,050 | $485K | No change |
| FUTU Futu Holdings Ltd.-ADR filed as FUTU HLDGS LTD | 0.40% | 3,500 | $479K | No change |
| DDOG Datadog Inc. Class A | 0.40% | 4,000 | $472K | No change |
| PHM Pultegroup Inc. | 0.39% | 4,000 | $470K | No change |
| AZZ Azz Inc. | 0.39% | 3,750 | $469K | No change |
| ASR Grupo Aeroportuario Sur-ADR | 0.39% | 1,390 | $467K | No change |
| BLD Topbuild Corp. | 0.38% | 1,300 | $457K | No change |
| SNX TD Synnex Corp. | 0.38% | 2,700 | $456K | No change |
| TGTX TG Therapeutics Inc. | 0.38% | 13,700 | $455K | Add +28.6% |
| NATL NCR Atleos Corp. | 0.38% | 10,400 | $453K | No change |
| TR Tootsie Roll Inds | 0.38% | 10,609 | $453K | Add +3.0% |
| XMTR Xometry Inc. Class A | 0.38% | 11,050 | $451K | No change |
| CALX Calix Inc. | 0.37% | 9,000 | $441K | No change |
| EVLV Evolv Technologies Holdings | 0.37% | 72,500 | $439K | New |
| IDCC Interdigital Inc. | 0.37% | 1,450 | $438K | No change |
| KGS Kodiak Gas Services Inc. | 0.37% | 7,500 | $437K | No change |
| ZWS Zurn Elkay Water Solutions C | 0.37% | 9,750 | $437K | No change |
| RNR Renaissancere Holdings Ltd. | 0.36% | 1,450 | $431K | No change |
Portfolio Sells Q4 2025 → Q1 2026
| CYBR Cyberark Software Ltd./Israel | Sold out | 0.00% | −1.44 |
| HOOD Robinhood Markets Inc. Class A | Sold out | 0.00% | −1.11 |
| LPLA LPL Financial Holdings Inc. | Reduce -60.3% | 0.53% | −0.98 |
| SRAD Sportradar Group AG-A | Sold out | 0.00% | −0.80 |
| ARX Accelerant Holdings Class A | Sold out | 0.00% | −0.78 |
| IR Ingersoll-Rand Inc. | Sold out | 0.00% | −0.61 |
| FIGR Figure Technology Solut Class A | Sold out | 0.00% | −0.56 |
| GENI Genius Sports Ltd. | Sold out | 0.00% | −0.55 |
| LYFT LYFT Inc. Class A | Sold out | 0.00% | −0.51 |
| SMCI Super Micro Computer Inc. | Sold out | 0.00% | −0.47 |
| LOAR Loar Holdings Inc. | Sold out | 0.00% | −0.43 |
| KNSL Kinsale Capital Group Inc. | Reduce -66.3% | 0.19% | −0.42 |
| PCOR Procore Technologies Inc. | Sold out | 0.00% | −0.39 |
| KTOS Kratos Defense & Security | Sold out | 0.00% | −0.38 |
| DORM Dorman Products Inc. | Sold out | 0.00% | −0.36 |
| NTSK Netskope Inc. Class A | Sold out | 0.00% | −0.35 |
| UPWK Upwork Inc. | Sold out | 0.00% | −0.35 |
| KVYO Klaviyo Inc. Class A | Sold out | 0.00% | −0.31 |
| EXLS Exlservice Holdings Inc. | Reduce -33.1% | 0.31% | −0.31 |
| HQY Healthequity Inc. | Sold out | 0.00% | −0.30 |
| GSHD Goosehead Insurance Inc. Class A | Sold out | 0.00% | −0.30 |
| UBER Uber Technologies Inc. | Sold out | 0.00% | −0.26 |
| RYTM Rhythm Pharmaceuticals Inc. | Sold out | 0.00% | −0.26 |
| DOCS Doximity Inc. Class A | Sold out | 0.00% | −0.25 |
| INSM Insmed Inc. | Reduce -17.4% | 1.08% | −0.25 |
| GLOB Globant SA | Sold out | 0.00% | −0.25 |
| BILL Bill Holdings Inc. | Sold out | 0.00% | −0.24 |
| INTA Intapp Inc. | Sold out | 0.00% | −0.24 |
| PGNY Progyny Inc. | Sold out | 0.00% | −0.24 |
| DLO Dlocal Ltd. | Reduce -31.6% | 0.45% | −0.24 |
| NIQ Niq Global Intelligence PLC | Sold out | 0.00% | −0.23 |
| GWRE Guidewire Software Inc. | Sold out | 0.00% | −0.23 |
| ASAN Asana Inc. Class A | Sold out | 0.00% | −0.22 |
| HIMS Hims & Hers Health Inc. | Sold out | 0.00% | −0.20 |
| S Sentinelone Inc. Class A | Sold out | 0.00% | −0.20 |
| SEZL Sezzle Inc. | Reduce -50.0% | 0.21% | −0.19 |
| PAYO Payoneer Global Inc. | Sold out | 0.00% | −0.18 |
| VRRM Verra Mobility Corp. | Sold out | 0.00% | −0.18 |
| PFF iShares Preferred & Income S | Reduce -20.0% | 0.81% | −0.18 |
| PSN Parsons Corp. | Sold out | 0.00% | −0.17 |
| ICVT iShares Convertible Bond ETF | Reduce -14.8% | 1.96% | −0.17 |
| CWB SS SPDR BB Conv Sec ETF | Reduce -14.8% | 1.76% | −0.16 |
| NRDS Nerdwallet Inc. Class A | Sold out | 0.00% | −0.16 |
| TGLS Tecnoglass Holdings Inc. | Sold out | 0.00% | −0.16 |
| TILE Interface Inc. | Sold out | 0.00% | −0.16 |
| ELF Elf Beauty Inc. | Sold out | 0.00% | −0.16 |
| PCTY Paylocity Holding Corp. | Reduce -15.2% | 0.25% | −0.15 |
| JBI Janus International Group Inc. | Sold out | 0.00% | −0.15 |
| GTM Zoominfo Technologies Inc. | Sold out | 0.00% | −0.14 |
| FNB FNB Corp. | Sold out | 0.00% | −0.14 |
Portfolio Buys Q4 2025 → Q1 2026
| PANW Palo Alto Networks Inc. | New | 1.20% | +1.20 |
| LITE Lumentum Holdings Inc. | New | 0.66% | +0.66 |
| LQD Ishr Ibx Usd Invgd CB ETF-Ui | Add +75.0% | 1.28% | +0.57 |
| NVMI Nova Ltd. | Add +18.1% | 1.37% | +0.53 |
| CAMT Camtek Ltd. | Add +35.6% | 0.89% | +0.45 |
| SUNB Sunbelt Rentals Holdings Inc. | New | 0.45% | +0.45 |
| AX Axos Financial Inc. | New | 0.43% | +0.43 |
| EVLV Evolv Technologies Holdings | New | 0.37% | +0.37 |
| GHM Graham Corp. | New | 0.36% | +0.36 |
| DOCN Digitalocean Holdings Inc. | New | 0.35% | +0.35 |
| ESE Esco Technologies Inc. | Add +97.8% | 0.52% | +0.35 |
| VSEC Vse Corp. | New | 0.28% | +0.28 |
| BMNR Bitmine Immersion Technologi | New | 0.27% | +0.27 |
| THR Thermon Group Holdings Inc. | New | 0.27% | +0.27 |
| SNEX Stonex Group Inc. | Add +50.0% | 1.06% | +0.26 |
| CYTK Cytokinetics Inc. | New | 0.26% | +0.26 |
| PDFS PDF Solutions Inc. | New | 0.26% | +0.26 |
| AXSM Axsome Therapeutics Inc. | Add +111.8% | 0.51% | +0.26 |
| APPF Appfolio Inc. Class A | New | 0.26% | +0.26 |
| YOU Clear Secure Inc. Class A | New | 0.26% | +0.26 |
| LW Lamb Weston Holdings Inc. | New | 0.25% | +0.25 |
| WTTR Select Water Solutions Inc. | New | 0.25% | +0.25 |
| OS Onestream Inc. | New | 0.25% | +0.25 |
| HALO Halozyme Therapeutics Inc. | New | 0.24% | +0.24 |
| NVT Nvent Electric PLC | New | 0.24% | +0.24 |
| GH Guardant Health Inc. | Add +59.5% | 0.68% | +0.23 |
| DT Dynatrace Inc. | New | 0.23% | +0.23 |
| PODD Insulet Corp. | New | 0.23% | +0.23 |
| RYAN Ryan Specialty Holdings Inc. | New | 0.22% | +0.22 |
| GRC Gorman-Rupp Co. | New | 0.22% | +0.22 |
| ONON On Holding AG Class A | New | 0.21% | +0.21 |
| CIFR Cipher Digital Inc. | New | 0.21% | +0.21 |
| CRDO Credo Technology Group Holdi | New | 0.21% | +0.21 |
| RRC Range Resources Corp. | New | 0.20% | +0.20 |
| BBIO Bridgebio Pharma Inc. | New | 0.20% | +0.20 |
| UMBF Umb Financial Corp. | New | 0.20% | +0.20 |
| MIRM Mirum Pharmaceuticals Inc. | New | 0.20% | +0.20 |
| CECO Ceco Environmental Corp. | Add +33.0% | 0.64% | +0.18 |
| BCPC Balchem Corp. | Add +72.4% | 0.35% | +0.18 |
| TTI Tetra Technologies Inc. | New | 0.17% | +0.17 |
| IONQ Ionq Inc. | New | 0.17% | +0.17 |
| BFAM Bright Horizons Family Solut | New | 0.17% | +0.17 |
| PATH Uipath Inc. Class A | New | 0.16% | +0.16 |
| QBTS D-Wave Quantum Inc. | New | 0.16% | +0.16 |
| HWKN Hawkins Inc. | Add +11.7% | 0.74% | +0.15 |
| HYG Ishr Ibx Usd Hiyld CB ETF-Ui | Add +25.0% | 0.67% | +0.15 |
| EXP Eagle Materials Inc. | Add +59.4% | 0.42% | +0.14 |
| TMDX Transmedics Group Inc. | Add +65.7% | 0.48% | +0.14 |
| TGTX TG Therapeutics Inc. | Add +28.6% | 0.38% | +0.13 |
| BL Blackline Inc. | Add +100.0% | 0.34% | +0.10 |
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 |