Yorktown Management & Research Co Inc Portfolio Stock Holdings
According to the SEC 13F filed on October 28, 2026, Yorktown Management & Research Co Inc disclosed 249 stock positions valued at approximately $149.68M as of quarter-end September 30, 2026. The largest holdings include Comfort Systems USA, Inc., IES Holdings, Inc., and Guardant Health, Inc..
- Report Period
- September 30, 2026
- No. of Stocks
- 249
- Portfolio Value
- $149.68M
Holdings by Sector
Yorktown Management & Research Co Inc Portfolio Holdings in Q3 2026
| Company | Symbol | Sector | Portfolio % | Shares | Change (Shares) | Change % | Value |
|---|---|---|---|---|---|---|---|
| Comfort Systems USA, Inc. | FIX | Industrials | 3.27% | 2,960 | - | - | $4,896,106 |
| IES Holdings, Inc. | IESC | Industrials | 2.36% | 11,020 | +5,510 | +100.00% | $3,538,302 |
| Guardant Health, Inc. | GH | Healthcare | 1.49% | 12,500 | - | - | $2,229,500 |
| Arista Networks, Inc. | ANET | Technology | 1.33% | 9,800 | - | - | $1,995,182 |
| KLA Corporation | KLAC | Technology | 1.16% | 8,900 | - | - | $1,734,877 |
| iShares Convertible Bond ETF | ICVT | Other | 1.13% | 15,000 | -5,000 | -25.00% | $1,694,025 |
| CECO Environmental Corporation | CECO | Industrials | 1.13% | 24,309 | +7,100 | +41.26% | $1,692,879 |
| WESCO International, Inc. | WCC | Industrials | 1.09% | 4,550 | - | - | $1,636,135 |
| Vanguard Emerging Markets Government Bond ETF | VWOB | Other | 1.05% | 25,000 | -5,000 | -16.67% | $1,578,250 |
| StoneX Group, Inc. | SNEX | Financial Services | 1.02% | 23,625 | +7,875 | +50.00% | $1,527,120 |
| SPDR Bloomberg Convertible Securities ETF | CWB | Other | 1.01% | 15,000 | -5,000 | -25.00% | $1,517,700 |
| iShares iBoxx $ Investment Grade Corporate Bond | LQD | Other | 0.96% | 14,000 | -1,000 | -6.67% | $1,430,520 |
| Fabrinet | FN | Technology | 0.89% | 3,150 | - | - | $1,336,451 |
| Semtech Corporation | SMTC | Technology | 0.82% | 6,850 | - | - | $1,221,698 |
| Mueller Industries, Inc. | MLI | Industrials | 0.77% | 19,100 | +6,700 | +54.03% | $1,157,651 |
| Bloom Energy Corporation | BE | Industrials | 0.77% | 4,150 | - | - | $1,149,467 |
| Xometry, Inc. | XMTR | Industrials | 0.76% | 11,050 | - | - | $1,136,493 |
| Medpace Holdings, Inc. | MEDP | Healthcare | 0.75% | 1,800 | - | - | $1,123,524 |
| Datadog, Inc. | DDOG | Technology | 0.73% | 4,000 | - | - | $1,095,400 |
| Camtek Ltd. | CAMT | Technology | 0.73% | 7,050 | - | - | $1,094,513 |
| Lumentum Holdings, Inc. | LITE | Technology | 0.73% | 1,125 | - | - | $1,092,668 |
| ACM Research, Inc. | ACMR | Technology | 0.72% | 13,300 | - | - | $1,076,236 |
| Interactive Brokers Group, Inc. | IBKR | Financial Services | 0.71% | 12,400 | - | - | $1,059,208 |
| FirstCash Holdings, Inc. | FCFS | Financial Services | 0.70% | 4,950 | - | - | $1,045,589 |
| Digi International, Inc. | DGII | Technology | 0.70% | 13,700 | - | - | $1,044,351 |
| Raymond James Financial, Inc. | RJF | Financial Services | 0.68% | 6,450 | - | - | $1,019,229 |
| Nova Ltd. | NVMI | Technology | 0.68% | 2,640 | -580 | -18.01% | $1,016,928 |
| LifeStance Health Group, Inc. | LFST | Healthcare | 0.67% | 83,600 | - | - | $1,005,708 |
| Twist Bioscience Corporation | TWST | Healthcare | 0.66% | 5,100 | - | - | $985,524 |
| RBC Bearings, Inc. | RBC | Industrials | 0.66% | 1,970 | - | - | $983,483 |
Showing 30 of 249 holdings in the latest reporting period.