Yorktown Management & Research Co Inc
Institutional manager — quarterly 13F holdings, Q ending 2026-03-31
Reported value
$119.5M
Q ending 2026-03-31
Prior quarter
$125.1M
Q ending 2025-12-31
Change
-4.4% QoQ · +29.9% YoY
Positions
214
reported holdings
Largest positions
Top 100 of 214 reported positions by value, Q ending 2026-03-31. A manager can hold shares, calls and puts on the same security at once — such positions are listed as separate rows. Type: Shares = common stock, Put/Call = option positions (valued at the underlying), Principal = debt. Tickers link to stock pages where covered.
| Holding | Ticker | Type | Value ▼ | Shares |
|---|---|---|---|---|
| Comfort Systems Usa, Inc. | FIX | Shares | $4.4M | 3K |
| Ies Holdings, Inc. | IESC | Shares | $3.0M | 6K |
| Ishares Convertible Bond Etf | ICVT | Shares | $2.3M | 23K |
| Spdr Bloomberg Convertible Securit | CWB | Shares | $2.1M | 23K |
| Fabrinet | Shares | $2.0M | 4K | |
| Vanguard Emerging Markets Governme | VWOB | Shares | $2.0M | 30K |
| Nova Ltd. | Shares | $1.6M | 4K | |
| Mueller Industries, Inc. | MLI | Shares | $1.6M | 14K |
| Ishares Iboxx $ Investment Grade C | LQD | Shares | $1.5M | 14K |
| Palo Alto Networks, Inc. | PANW | Shares | $1.4M | 9K |
| Ftai Aviation Ltd. | Shares | $1.4M | 6K | |
| Kla Corporation | KLAC | Shares | $1.3M | 890 |
| Insmed, Inc. | INSM | Shares | $1.3M | 8K |
| Stonex Group, Inc. | SNEX | Shares | $1.3M | 16K |
| Wesco International, Inc. | WCC | Shares | $1.2M | 5K |
| Arista Networks, Inc. | ANET | Shares | $1.2M | 10K |
| Axon Enterprise, Inc. | AXON | Shares | $1.1M | 3K |
| Rbc Bearings, Inc. | RBC | Shares | $1.1M | 2K |
| Camtek Ltd. | Shares | $1.1M | 7K | |
| Gold Fields Ltd. | GFI | Shares | $1.0M | 23K |
| Penumbra, Inc. | PEN | Shares | $985K | 3K |
| Woodward, Inc. | WWD | Shares | $984K | 3K |
| Ishares Preferred And Income Secur | PFF | Shares | $970K | 32K |
| Bwx Technologies, Inc. | BWXT | Shares | $961K | 5K |
| Curtiss-Wright Corporation | CW | Shares | $954K | 1K |
| Raymond James Financial, Inc. | RJF | Shares | $934K | 6K |
| Firstcash Holdings, Inc. | FCFS | Shares | $931K | 5K |
| Modine Manufacturing Company | MOD | Shares | $899K | 4K |
| Hawkins, Inc. | HWKN | Shares | $883K | 6K |
| Primoris Services Corporation | PRIM | Shares | $880K | 6K |
| Casey'S General Stores, Inc. | CASY | Shares | $873K | 1K |
| Ha Sustainable Infrastructure Capi | HASI | Shares | $865K | 24K |
| Medpace Holdings, Inc. | MEDP | Shares | $864K | 2K |
| Interactive Brokers Group, Inc. | IBKR | Shares | $832K | 12K |
| Guardant Health, Inc. | GH | Shares | $817K | 9K |
| United States Lime & Minerals, Inc | USLM | Shares | $813K | 6K |
| Ishares Iboxx $ High Yield Corpora | HYG | Shares | $796K | 10K |
| Lumentum Holdings, Inc. | LITE | Shares | $791K | 1K |
| Installed Building Products, Inc. | IBP | Shares | $769K | 3K |
| Ceco Environmental Corporation | CECO | Shares | $769K | 13K |
| Applied Digital Corporation | APLD | Shares | $721K | 30K |
| Monolithic Power Systems, Inc. | MPWR | Shares | $711K | 650 |
| Mastec, Inc. | MTZ | Shares | $708K | 2K |
| Ensign Group, Inc. (The) | ENSG | Shares | $705K | 4K |
| Celestica, Inc. | CLS | Shares | $690K | 2K |
| Texas Pacific Land Corporation | TPL | Shares | $683K | 1K |
| Performance Food Group Company | PFGC | Shares | $675K | 8K |
| Kkr & Company, Inc. | KKR | Shares | $666K | 7K |
| Digi International, Inc. | DGII | Shares | $660K | 14K |
| Core & Main, Inc. | CNM | Shares | $657K | 13K |
| Saia, Inc. | SAIA | Shares | $646K | 2K |
| Ciena Corporation | CIEN | Shares | $641K | 2K |
| Pampa Energia S.A. | PAM | Shares | $637K | 7K |
| Lpl Financial Holdings, Inc. | LPLA | Shares | $632K | 2K |
| Itt, Inc. | ITT | Shares | $629K | 3K |
| Esco Technologies, Inc. | ESE | Shares | $626K | 2K |
| Par Pacific Holdings, Inc. | PARR | Shares | $620K | 10K |
| Api Group Corporation | APG | Shares | $614K | 15K |
| Zeta Global Holdings Corporation | ZETA | Shares | $611K | 38K |
| Axsome Therapeutics, Inc. | AXSM | Shares | $608K | 4K |
| Rambus, Inc. | RMBS | Shares | $602K | 7K |
| Rush Street Interactive, Inc. | RSI | Shares | $585K | 27K |
| Transmedics Group, Inc. | TMDX | Shares | $577K | 6K |
| Tyler Technologies, Inc. | TYL | Shares | $565K | 2K |
| Franklin Electric Company, Inc. | FELE | Shares | $553K | 6K |
| Houlihan Lokey, Inc. | HLI | Shares | $553K | 4K |
| Globus Medical, Inc. | GMED | Shares | $551K | 6K |
| Teledyne Technologies, Inc. | TDY | Shares | $545K | 900 |
| Stifel Financial Corporation | SF | Shares | $543K | 7K |
| Spx Technologies, Inc. | SPXC | Shares | $540K | 3K |
| Dlocal Ltd./Uruguay | Shares | $538K | 42K | |
| Stock Yards Bancorp, Inc. | SYBT | Shares | $537K | 8K |
| Freedom Holding Corp | FRHC | Shares | $536K | 4K |
| Sunbelt Rentals Holdings, Inc. | SUNB | Shares | $534K | 8K |
| Construction Partners, Inc. | ROAD | Shares | $533K | 5K |
| Lithia Motors, Inc. | LAD | Shares | $524K | 2K |
| Acm Research, Inc. | ACMR | Shares | $523K | 13K |
| Dutch Bros, Inc. | BROS | Shares | $522K | 10K |
| Krystal Biotech, Inc. | KRYS | Shares | $517K | 2K |
| Axos Financial, Inc. | AX | Shares | $511K | 6K |
| Dycom Industries, Inc. | DY | Shares | $500K | 1K |
| Eagle Materials, Inc. | EXP | Shares | $498K | 3K |
| Ringcentral, Inc. | RNG | Shares | $485K | 13K |
| Futu Holdings Ltd. | FUTU | Shares | $479K | 4K |
| Datadog, Inc. | DDOG | Shares | $472K | 4K |
| Pultegroup, Inc. | PHM | Shares | $470K | 4K |
| Azz, Inc. | AZZ | Shares | $469K | 4K |
| Grupo Aeroportuario Del Sureste S. | ASR | Shares | $467K | 1K |
| Topbuild Corporation | BLD* | Shares | $457K | 1K |
| Td Synnex Corporation | SNX | Shares | $456K | 3K |
| Tg Therapeutics, Inc. | TGTX | Shares | $455K | 14K |
| Ncr Atleos Corporation | NATL | Shares | $453K | 10K |
| Tootsie Roll Industries, Inc. | TR | Shares | $453K | 11K |
| Xometry, Inc. | XMTR | Shares | $451K | 11K |
| Calix, Inc. | CALX | Shares | $441K | 9K |
| Evolv Technologies Holdings, Inc. | EVLV | Shares | $439K | 73K |
| Interdigital, Inc. | IDCC | Shares | $438K | 1K |
| Kodiak Gas Services, Inc. | KGS | Shares | $437K | 8K |
| Zurn Elkay Water Solutions Corpora | ZWS | Shares | $437K | 10K |
| Renaissancere Holdings Ltd. | Shares | $431K | 1K |
Values as reported in public regulatory filings (USD); holdings are reported quarterly, up to 45 days after quarter end, and may contain reporting errors. Nothing here is investment advice.