Yorktown Management & Research Co Inc Portfolio Stock Holdings
Yorktown Management & Research Co Inc disclosed 249 stock positions valued at approximately $163.3 million in its latest SEC 13F filing. The largest holdings include Comfort Systems USA, Inc., IES Holdings, Inc., and KLA Corporation. The filing reflects positions held as of June 30, 2026 and was filed on July 23, 2026.
- Report Period
- June 30, 2026
- No. of Stocks
- 249
- Portfolio Value
- $163.3M
Holdings by Sector
Yorktown Management & Research Co Inc Portfolio Holdings in Q2 2026
231 holdings in the latest reporting period.
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| Company | Symbol | Sector | Portfolio % | Shares | Change (Shares) | Change % | Value |
|---|---|---|---|---|---|---|---|
| Comfort Systems USA, Inc. | FIX | Industrials | 3.59% | 2,960 | -250 | -7.79% | $5,866,572 |
| IES Holdings, Inc. | IESC | Industrials | 2.48% | 5,510 | -830 | -13.09% | $4,047,977 |
| KLA Corporation | KLAC | Technology | 1.64% | 8,900 | +8,010 | +900.00% | $2,685,219 |
| iShares Convertible Bond ETF | ICVT | Other | 1.49% | 20,000 | -3,000 | -13.04% | $2,434,800 |
| SPDR Bloomberg Convertible Securities ETF | CWB | Other | 1.32% | 20,000 | -3,000 | -13.04% | $2,156,400 |
| Vanguard Emerging Markets Government Bond ETF | VWOB | Other | 1.24% | 30,000 | - | - | $2,017,200 |
| Guardant Health, Inc. | GH | Healthcare | 1.15% | 12,500 | +3,650 | +41.24% | $1,875,375 |
| StoneX Group, Inc. | SNEX | Financial Services | 1.14% | 15,750 | - | - | $1,866,375 |
| Fabrinet | FN | Other | 1.08% | 3,150 | -650 | -17.11% | $1,770,552 |
| ACM Research, Inc. | ACMR | Technology | 1.03% | 13,300 | - | - | $1,687,637 |
| Arista Networks, Inc. | ANET | Other | 1.02% | 9,800 | - | - | $1,664,824 |
| iShares iBoxx $ Investment Grade Corporate Bond | LQD | Other | 1.00% | 15,000 | +1,000 | +7.14% | $1,636,050 |
| WESCO International, Inc. | WCC | Industrials | 0.96% | 4,550 | - | - | $1,571,706 |
| FTAI Aviation Ltd. | FTAI | Other | 0.96% | 5,800 | - | - | $1,569,074 |
| CECO Environmental Corporation | CECO | Industrials | 0.96% | 17,209 | +4,309 | +33.40% | $1,561,545 |
| Mueller Industries, Inc. | MLI | Industrials | 0.93% | 12,400 | -2,050 | -14.19% | $1,524,332 |
| RBC Bearings, Inc. | RBC | Industrials | 0.78% | 1,970 | - | - | $1,268,798 |
| Bloom Energy Corporation | BE | Industrials | 0.77% | 4,150 | +4,150 | +100.00% | $1,256,205 |
| Axsome Therapeutics, Inc. | AXSM | Healthcare | 0.73% | 4,850 | +1,250 | +34.72% | $1,187,135 |
| Dycom Industries, Inc. | DY | Industrials | 0.72% | 2,326 | +850 | +57.59% | $1,176,002 |
| Woodward, Inc. | WWD | Industrials | 0.72% | 2,750 | - | - | $1,169,960 |
| Applied Digital Corporation | APLD | Technology | 0.69% | 30,350 | - | - | $1,132,055 |
| Semtech Corporation | SMTC | Technology | 0.68% | 6,850 | +6,850 | +100.00% | $1,108,673 |
| Modine Manufacturing Company | MOD | Consumer Cyclical | 0.68% | 4,150 | - | - | $1,108,133 |
| Interactive Brokers Group, Inc. | IBKR | Financial Services | 0.66% | 12,400 | - | - | $1,079,296 |
| FirstCash Holdings, Inc. | FCFS | Financial Services | 0.66% | 4,950 | - | - | $1,070,784 |
| Xometry, Inc. | XMTR | Industrials | 0.65% | 11,050 | - | - | $1,066,546 |
| Curtiss-Wright Corporation | CW | Industrials | 0.65% | 1,400 | - | - | $1,060,864 |
| Axon Enterprise, Inc. | AXON | Industrials | 0.64% | 1,875 | -775 | -29.25% | $1,051,144 |
| SPX Technologies, Inc. | SPXC | Industrials | 0.64% | 4,250 | +1,550 | +57.41% | $1,041,973 |
| Datadog, Inc. | DDOG | Technology | 0.64% | 4,000 | - | - | $1,041,440 |
| Digi International, Inc. | DGII | Technology | 0.63% | 13,700 | - | - | $1,026,815 |
| Liquidia Corporation | LQDA | Healthcare | 0.62% | 12,700 | +12,700 | +100.00% | $1,012,571 |
| IonQ, Inc. | IONQ | Technology | 0.61% | 18,700 | +11,700 | +167.14% | $995,962 |
| Installed Building Products, Inc. | IBP | Consumer Cyclical | 0.61% | 4,300 | +1,400 | +48.28% | $988,312 |
| Raymond James Financial, Inc. | RJF | Financial Services | 0.60% | 6,450 | - | - | $980,594 |
| iShares Preferred and Income Securities ETF | PFF | Other | 0.60% | 32,000 | - | - | $975,680 |
| Lumentum Holdings, Inc. | LITE | Technology | 0.59% | 1,125 | - | - | $965,318 |
| Casey's General Stores, Inc. | CASY | Consumer Cyclical | 0.58% | 1,200 | - | - | $953,748 |
| Medpace Holdings, Inc. | MEDP | Healthcare | 0.58% | 1,800 | - | - | $953,262 |
| Penumbra, Inc. | PEN | Healthcare | 0.58% | 3,000 | - | - | $947,250 |
| HA Sustainable Infrastructure Capital, Inc. | HASI | Real Estate | 0.56% | 23,550 | - | - | $919,628 |
| MasTec, Inc. | MTZ | Industrials | 0.56% | 2,200 | - | - | $915,332 |
| BWX Technologies, Inc. | BWXT | Industrials | 0.56% | 4,700 | - | - | $914,855 |
| Monolithic Power Systems, Inc. | MPWR | Technology | 0.55% | 650 | - | - | $898,534 |
| LifeStance Health Group, Inc. | LFST | Healthcare | 0.55% | 83,600 | +83,600 | +100.00% | $895,356 |
| Celestica, Inc. | CLS | Technology | 0.55% | 2,450 | - | - | $893,760 |
| Performance Food Group Company | PFGC | Consumer Defensive | 0.54% | 7,880 | - | - | $880,905 |
| Insmed, Inc. | INSM | Healthcare | 0.52% | 7,925 | - | - | $844,964 |
| Denali Therapeutics, Inc. | DNLI | Healthcare | 0.51% | 32,100 | +32,100 | +100.00% | $825,612 |
| Hawkins, Inc. | HWKN | Basic Materials | 0.50% | 5,750 | - | - | $817,075 |
| Ciena Corporation | CIEN | Technology | 0.50% | 1,650 | - | - | $809,424 |
| LPL Financial Holdings, Inc. | LPLA | Financial Services | 0.49% | 2,850 | +750 | +35.71% | $802,788 |
| Rush Street Interactive, Inc. | RSI | Consumer Cyclical | 0.49% | 26,900 | - | - | $800,006 |
| iShares iBoxx $ High Yield Corporate Bond ETF | HYG | Other | 0.49% | 10,000 | - | - | $799,700 |
| Allegro MicroSystems, Inc. | ALGM | Technology | 0.48% | 11,300 | - | - | $786,706 |
| ESCO Technologies, Inc. | ESE | Technology | 0.48% | 2,225 | - | - | $778,839 |
| Saia, Inc. | SAIA | Industrials | 0.47% | 1,840 | - | - | $774,934 |
| Beam Therapeutics, Inc. | BEAM | Healthcare | 0.47% | 22,550 | +22,550 | +100.00% | $773,916 |
| DigitalOcean Holdings, Inc. | DOCN | Technology | 0.47% | 4,900 | - | - | $769,447 |
| Gold Fields Ltd. | GFI | Basic Materials | 0.47% | 22,750 | - | - | $764,173 |
| Fortinet, Inc. | FTNT | Technology | 0.47% | 4,950 | - | - | $760,419 |
| TG Therapeutics, Inc. | TGTX | Healthcare | 0.46% | 13,700 | - | - | $752,678 |
| Krystal Biotech, Inc. | KRYS | Healthcare | 0.46% | 2,000 | - | - | $743,340 |
| Ensign Group, Inc. (The) | ENSG | Healthcare | 0.45% | 4,600 | +1,100 | +31.43% | $737,380 |
| TD SYNNEX Corporation | SNX | Technology | 0.44% | 2,700 | - | - | $721,818 |
| Credo Technology Group Holding Ltd. | G25457105 | Other | 0.44% | 2,650 | - | - | $720,668 |
| Palo Alto Networks, Inc. | PANW | Technology | 0.44% | 2,090 | -6,821 | -76.55% | $712,732 |
| Sezzle, Inc. | SEZL | Financial Services | 0.42% | 3,950 | - | - | $677,939 |
| Chefs' Warehouse, Inc. (The) | CHEF | Consumer Defensive | 0.41% | 7,050 | - | - | $677,505 |
| PDF Solutions, Inc. | PDFS | Technology | 0.41% | 9,550 | - | - | $676,045 |
| Graham Corporation | GHM | Industrials | 0.41% | 5,450 | - | - | $674,656 |
| Life Time Group Holdings, Inc. | LTH | Consumer Cyclical | 0.41% | 16,450 | +16,450 | +100.00% | $671,818 |
| PACS Group, Inc. | PACS | Healthcare | 0.41% | 15,600 | +15,600 | +100.00% | $665,184 |
| KKR & Company, Inc. | KKR | Financial Services | 0.40% | 7,200 | - | - | $660,816 |
| Cytokinetics, Inc. | CYTK | Healthcare | 0.40% | 7,750 | +3,000 | +63.16% | $660,223 |
| Rambus, Inc. | RMBS | Technology | 0.40% | 4,950 | -2,050 | -29.29% | $657,063 |
| Mirum Pharmaceuticals, Inc. | MIRM | Healthcare | 0.40% | 5,600 | +3,050 | +119.61% | $655,592 |
| ITT, Inc. | ITT | Industrials | 0.40% | 3,300 | - | - | $652,608 |
| Dave, Inc. | DAVE | Technology | 0.40% | 1,750 | - | - | $652,033 |
| United States Lime & Minerals, Inc. | USLM | Basic Materials | 0.40% | 6,225 | - | - | $651,571 |
| Unity Software, Inc. | U | Technology | 0.39% | 22,550 | +22,550 | +100.00% | $644,479 |
| ACADIA Pharmaceuticals, Inc. | ACAD | Healthcare | 0.39% | 25,450 | +13,400 | +111.20% | $643,885 |
| Franklin Electric Company, Inc. | FELE | Industrials | 0.39% | 6,000 | - | - | $643,140 |
| Core & Main, Inc. | CNM | Industrials | 0.39% | 13,300 | - | - | $641,725 |
| API Group Corporation | APG | Industrials | 0.39% | 15,150 | - | - | $641,603 |
| Neurocrine Biosciences, Inc. | NBIX | Healthcare | 0.39% | 3,750 | +1,500 | +66.67% | $632,006 |
| Texas Pacific Land Corporation | TPL | Energy | 0.39% | 1,440 | - | - | $630,202 |
| Stock Yards Bancorp, Inc. | SYBT | Financial Services | 0.38% | 8,100 | - | - | $619,407 |
| Halozyme Therapeutics, Inc. | HALO | Healthcare | 0.38% | 7,850 | +3,400 | +76.40% | $614,420 |
| Lithia Motors, Inc. | LAD | Consumer Cyclical | 0.37% | 2,100 | - | - | $610,029 |
| Teledyne Technologies, Inc. | TDY | Technology | 0.37% | 900 | - | - | $600,210 |
| Western Alliance Bancorp | WAL | Financial Services | 0.36% | 7,200 | +3,500 | +94.59% | $591,840 |
| Eagle Materials, Inc. | EXP | Basic Materials | 0.36% | 2,630 | - | - | $591,750 |
| Pampa Energia S.A. | PAM | Utilities | 0.36% | 7,200 | - | - | $591,336 |
| Embraer S.A. | ERJ | Industrials | 0.36% | 9,200 | +5,000 | +119.05% | $586,960 |
| Ralph Lauren Corporation | RL | Consumer Cyclical | 0.36% | 1,460 | +760 | +108.57% | $586,059 |
| Axos Financial, Inc. | AX | Financial Services | 0.36% | 6,000 | - | - | $584,340 |
| AZZ, Inc. | AZZ | Industrials | 0.36% | 3,750 | - | - | $581,438 |
| Hamilton Insurance Group Ltd. | G42706104 | Other | 0.35% | 16,900 | +7,300 | +76.04% | $573,586 |