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Yorktown Management & Research Co Inc — 13F Holdings & Portfolio

CIK 1313559 · latest 13F-HR filed 2026-04-20

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Yorktown Management & Research Co Inc manages $119.5M in 13F-reported U.S. long-equity assets across 214 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are FIX (3.70%), IESC (2.53%), ICVT (1.96%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 36 new positions, exited 41, added to 62, and trimmed 78.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

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AUM

$119.5M

Long-equity book

Holdings

214

Distinct positions

Period

2026-03-31

Filed 2026-04-20

Q/Q Activity

+36 / −41 / ↑62 / ↓78

vs 2025-12-31

Firm Profile & Key People
Name Title / Status Ownership Type

Top Adds (vs prior quarter)

  • Comfort Systems USA, Inc.$1.2M +35.5%
  • iShares iBoxx $ Investment Grade Corporate Bond$644.3K +73.1%
  • Nova Ltd.$590.7K +56.2%
  • IES Holdings, Inc.$554.4K +22.5%
  • Camtek Ltd.$515.9K +93.3%
Show all 62 →

Top Trims

  • LPL Financial Holdings, Inc.-$1.3M -66.6%
  • Kinsale Capital Group, Inc.-$541.1K -70.6%
  • ExlService Holdings, Inc.-$399.7K -52.0%
  • Axon Enterprise, Inc.-$379.6K -25.2%
  • Insmed, Inc.-$374.9K -22.4%
Show all 78 →

New Positions

  • Palo Alto Networks, Inc.$1.4M
  • Lumentum Holdings, Inc.$790.6K
  • Sunbelt Rentals Holdings, Inc.$533.7K
  • Axos Financial, Inc.$510.5K
  • Evolv Technologies Holdings, Inc.$438.6K
Show all 36 →

Exited Positions

  • CyberArk Software Ltd.$1.8M
  • Robinhood Markets, Inc.$1.4M
  • Sportradar Group A.G.$1.0M
  • Accelerant Holdings$969.6K
  • Ingersoll Rand, Inc.$768.4K
Show all 41 →
All Holdings

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 Comfort Systems USA, Inc. FIX 199908104 $4.4M 3.70% 3,210 SH
2 IES Holdings, Inc. IESC 44951W106 $3.0M 2.53% 6,340 SH
3 iShares Convertible Bond ETF ICVT 46435G102 $2.3M 1.96% 23,000 SH
4 SPDR Bloomberg Convertible Securities ETF CWB 78464A359 $2.1M 1.76% 23,000 SH
5 Fabrinet FN G3323L100 $2.0M 1.66% 3,800 SH
6 Vanguard Emerging Markets Government Bond ETF VWOB 921946885 $2.0M 1.65% 30,000 SH
7 Nova Ltd. NVMI M7516K103 $1.6M 1.37% 3,780 SH
8 Mueller Industries, Inc. MLI 624756102 $1.6M 1.34% 14,450 SH
9 iShares iBoxx $ Investment Grade Corporate Bond LQD 464287242 $1.5M 1.28% 14,000 SH
10 Palo Alto Networks, Inc. PANW 697435105 $1.4M 1.20% 8,911 SH
11 FTAI Aviation Ltd. FTAI G3730V105 $1.4M 1.19% 5,800 SH
12 KLA Corporation KLAC 482480100 $1.3M 1.10% 890 SH
13 Insmed, Inc. INSM 457669307 $1.3M 1.08% 7,925 SH
14 StoneX Group, Inc. SNEX 861896108 $1.3M 1.06% 15,750 SH
15 WESCO International, Inc. WCC 95082P105 $1.2M 1.04% 4,550 SH
16 Arista Networks, Inc. ANET 040413205 $1.2M 1.01% 9,800 SH
17 Axon Enterprise, Inc. AXON 05464C101 $1.1M 0.94% 2,650 SH
18 RBC Bearings, Inc. RBC 75524B104 $1.1M 0.90% 1,970 SH
19 Camtek Ltd. CAMT M20791105 $1.1M 0.89% 7,050 SH
20 Gold Fields Ltd. GFI 38059T106 $1.0M 0.86% 22,750 SH
21 Penumbra, Inc. PEN 70975L107 $985.1K 0.82% 3,000 SH
22 Woodward, Inc. WWD 980745103 $984.3K 0.82% 2,750 SH
23 iShares Preferred and Income Securities ETF PFF 464288687 $970.2K 0.81% 32,000 SH
24 BWX Technologies, Inc. BWXT 05605H100 $961.1K 0.80% 4,700 SH
25 Curtiss-Wright Corporation CW 231561101 $953.6K 0.80% 1,400 SH
26 Raymond James Financial, Inc. RJF 754730109 $933.9K 0.78% 6,450 SH
27 FirstCash Holdings, Inc. FCFS 33768G107 $930.6K 0.78% 4,950 SH
28 Modine Manufacturing Company MOD 607828100 $899.3K 0.75% 4,150 SH
29 Hawkins, Inc. HWKN 420261109 $883.2K 0.74% 5,750 SH
30 Primoris Services Corporation PRIM 74164F103 $879.7K 0.74% 6,150 SH
31 Casey's General Stores, Inc. CASY 147528103 $873.4K 0.73% 1,200 SH
32 HA Sustainable Infrastructure Capital, Inc. HASI 41068X100 $865.5K 0.72% 23,550 SH
33 Medpace Holdings, Inc. MEDP 58506Q109 $864.3K 0.72% 1,800 SH
34 Interactive Brokers Group, Inc. IBKR 45841N107 $831.7K 0.70% 12,400 SH
35 Guardant Health, Inc. GH 40131M109 $817.5K 0.68% 8,850 SH
36 United States Lime & Minerals, Inc. USLM 911922102 $813.0K 0.68% 6,225 SH
37 iShares iBoxx $ High Yield Corporate Bond ETF HYG 464288513 $795.6K 0.67% 10,000 SH
38 Lumentum Holdings, Inc. LITE 55024U109 $790.6K 0.66% 1,125 SH
39 Installed Building Products, Inc. IBP 45780R101 $768.9K 0.64% 2,900 SH
40 CECO Environmental Corporation CECO 125141101 $768.6K 0.64% 12,900 SH
41 Applied Digital Corporation APLD 038169207 $720.5K 0.60% 30,350 SH
42 Monolithic Power Systems, Inc. MPWR 609839105 $710.7K 0.59% 650 SH
43 MasTec, Inc. MTZ 576323109 $707.8K 0.59% 2,200 SH
44 Ensign Group, Inc. (The) ENSG 29358P101 $705.2K 0.59% 3,500 SH
45 Celestica, Inc. CLS 15101Q207 $690.1K 0.58% 2,450 SH
46 Texas Pacific Land Corporation TPL 88262P102 $683.4K 0.57% 1,440 SH
47 Performance Food Group Company PFGC 71377A103 $675.0K 0.56% 7,880 SH
48 KKR & Company, Inc. KKR 48251W104 $666.0K 0.56% 7,200 SH
49 Digi International, Inc. DGII 253798102 $660.3K 0.55% 13,700 SH
50 Core & Main, Inc. CNM 21874C102 $657.0K 0.55% 13,300 SH
Filing History
Period Filed AUM Holdings Accession
2026-03-31 2026-04-20 $119.5M 214 0001193125-26-162911
2025-12-31 2026-01-23 $125.1M 219 0001193125-26-020430