YM
Yorktown Management & Research Co Inc — 13F Filing & Top Stock Positions (Q2 2026)
Yorktown Management & Research Co IncCIK: 0001313559
Diversified strategyMomentum followerQuality / disciplined sizing
Total reported value
$163.3M
Reporting period: 2026-06-30 · Number of holdings: 249
Yorktown Management & Research Co Inc disclosed 249 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $163.3M and a quarterly turnover rate of 57.0%.
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Personality snowflake
- Concentration
- 2.81
- Portfolio Stability
- 56.99
- Momentum
- 100
- Sector conviction
- 68.65
- Diversification
- 100
- Sizing Uniformity
- 91.34
Yorktown Management & Research Co Inc's disclosed holdings carry a Herfindahl concentration index of 0.007 — mathematically equivalent to about 143 equally-sized positions, well below its 249 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.87), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Sector classification currently covers about 65% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govNew buy BE
Trim PANW
-76.5% -$715.9K
New buy SMTC
New buy LQDA
Add ACMR
0.0% $1.2M
New buy FPS
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
Showing top 200 holdings (of 249 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | FIX | Comfort Systems USA Inc | Stock-Industrials | 3.59% | -0.11% | -7.79% | |
| 2 | IESC | Ies Holdings Inc | Stock-Industrials | 2.48% | -0.05% | -13.09% | |
| 3 | KLAC | Kla CORP | Stock-Tech | 1.64% | +0.54% | +900.00% | |
| 4 | ICVT | Ishares Convertible Bond ETF | ETF-Other | 1.49% | -0.47% | -13.04% | |
| 5 | CWB | Ss Spdr Bb Conv Sec ETF | ETF-Other | 1.32% | -0.44% | -13.04% | |
| 6 | VWOB | Vanguard Emerg Mkts Gov Bnd | ETF-Other | 1.24% | -0.41% | — | |
| 7 | GH | Guardant Health Inc | Stock-Healthcare | 1.15% | +0.47% | +41.24% | |
| 8 | SNEX | Stonex Group Inc | Stock-Financials | 1.14% | +0.08% | — | |
| 9 | FN | Fabrinet | Stock-Tech | 1.08% | -0.58% | -17.11% | |
| 10 | NVMI | Nova Ltd. | Stock-Other | 1.07% | -0.30% | -14.81% | |
| 11 | ACMR | Acm Research Inc-class A | Stock-Other | 1.03% | +0.59% | — | |
| 12 | ANET | Arista Networks Inc | Stock-Tech | 1.02% | +0.01% | — | |
| 13 | LQD | Ishr Ibx Usd Invgd Cb Etf-ui | ETF-Corp Bonds | 1.00% | -0.28% | +7.14% | |
| 14 | WCC | Wesco International Inc | Stock-Industrials | 0.96% | -0.08% | — | |
| 15 | FTAI | FTAI Aviation Ltd. | Stock-Industrials | 0.96% | -0.23% | — | |
| 16 | CECO | Ceco Environmental CORP | Stock-Other | 0.96% | +0.32% | +33.40% | |
| 17 | MLI | Mueller Industries Inc | Stock-Industrials | 0.93% | -0.41% | -14.19% | |
| 18 | RBC | RBC Bearings Inc | Stock-Industrials | 0.78% | -0.12% | — | |
| 19 | BE | Bloom Energy Corp- A | Stock-Industrials | 0.77% | +0.77% | NEW | |
| 20 | AXSM | Axsome Therapeutics Inc | Stock-Healthcare | 0.73% | +0.22% | +34.72% | |
| 21 | DY | Dycom Industries Inc | Stock-Industrials | 0.72% | +0.30% | +57.59% | |
| 22 | WWD | Woodward Inc | Stock-Industrials | 0.72% | -0.10% | — | |
| 23 | CAMT | Camtek Ltd. | Stock-Other | 0.70% | -0.19% | — | |
| 24 | APLD | Applied Digital CORP | Stock-Tech | 0.69% | +0.09% | — | |
| 25 | SMTC | Semtech CORP | Stock-Tech | 0.68% | +0.68% | NEW | |
| 26 | MOD | Modine Manufacturing Co | Stock-Consumer Disc | 0.68% | -0.07% | — | |
| 27 | IBKR | Interactive Brokers Gro-cl A | Stock-Financials | 0.66% | -0.04% | — | |
| 28 | FCFS | Firstcash Holdings Inc | Stock-Financials | 0.66% | -0.12% | — | |
| 29 | XMTR | Xometry Inc-a | Stock-Other | 0.65% | +0.27% | — | |
| 30 | CW | Curtiss-wright CORP | Stock-Industrials | 0.65% | -0.15% | — | |
| 31 | AXON | Axon Enterprise Inc | Stock-Industrials | 0.64% | -0.30% | -29.25% | |
| 32 | SPXC | Spx Technologies Inc | Stock-Industrials | 0.64% | +0.19% | +57.41% | |
| 33 | DDOG | Datadog Inc - Class A | Stock-Tech | 0.64% | +0.24% | — | |
| 34 | DGII | Digi International Inc | Stock-Other | 0.63% | +0.08% | — | |
| 35 | LQDA | Liquidia CORP | Stock-Other | 0.62% | +0.62% | NEW | |
| 36 | IONQ | Ionq Inc | Stock-Tech | 0.61% | +0.44% | +167.14% | |
| 37 | IBP | Installed Building Products | Stock-Consumer Disc | 0.61% | -0.03% | +48.28% | |
| 38 | RJF | Raymond James Financial Inc | Stock-Financials | 0.60% | -0.18% | — | |
| 39 | PFF | Ishares Preferred & Income S | ETF-Other | 0.60% | -0.21% | — | |
| 40 | LITE | Lumentum Holdings Inc | Stock-Tech | 0.59% | -0.07% | — | |
| 41 | FPS | Forgent Power Solutions Inc | Stock-Other | 0.59% | +0.59% | NEW | |
| 42 | CASY | Casey's General Stores Inc | Stock-Consumer Disc | 0.58% | -0.15% | — | |
| 43 | MEDP | Medpace Holdings Inc | Stock-Healthcare | 0.58% | -0.14% | — | |
| 44 | PEN | Penumbra Inc | Stock-Healthcare | 0.58% | -0.24% | — | |
| 45 | HASI | Ha Sustainable Infrastructur | Stock-Financials | 0.56% | -0.16% | — | |
| 46 | MTZ | Mastec Inc | Stock-Industrials | 0.56% | -0.03% | — | |
| 47 | BWXT | Bwx Technologies Inc | Stock-Industrials | 0.56% | -0.24% | — | |
| 48 | MPWR | Monolithic Power Systems Inc | Stock-Tech | 0.55% | -0.04% | — | |
| 49 | LFST | Lifestance Health Group Inc | Stock-Other | 0.55% | +0.55% | NEW | |
| 50 | CLS | Celestica Inc | Stock-Tech | 0.55% | -0.03% | — |
1–50 of 200
* This report is exclusively curated by the AlphaSMO team. AlphaSMO is the web's most authoritative 13F / Inside Trader database, delivering precise insider trading and institutional holdings insights.
Portfolio Performance
Performance for Q3 2026
-0.4%
Performance Last 4 Quarters
+6.9%
- Stdev
- +18.3%
- Beta
- +1.19
- Alpha
- -13.3%
- Max Drawdown
- -16.4%
- Annualized Perf
- +9.2%
- Batting Avg vs S&P
- +41.7%
- Sortino
- +0.94
- Stutzer
- +0.17
- Treynor
- +0.09
- Sterling
- +0.46
- Calmar
- +0.56
- Information Ratio
- -0.93
- Tracking Error
- +10.3%
- Stdev Down
- +11.1%
- Winning Months %
- +61.1%
- Losing Months %
- +38.9%
- Best 12 Months
- +26.6%
- Worst 12 Months
- -9.3%
- Efficiency Ratio
- +0.19
- Sharpe
- +0.57
- Stdev Sectors
- +11.4%
- Skewness
- +0.03
- Kurtosis
- -0.8
- Upside Potential
- +2.81
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q2 | 249 | $163.3M | 57 | ||
| 2026 Q1 | 214 | $119.5M | 44 | ||
| 2025 Q4 | 219 | $125.1M | 38 | ||
| 2025 Q3 | 206 | $125.4M | 75 | ||
| 2025 Q2 | 208 | $104.8M | 0 | ||
| 2025 Q1 | 206 | $92.0M | 100 | ||
| 2024 Q4 | 204 | $104.0M | 0 | ||
| 2024 Q3 | 194 | $97.6M | 0 | ||
| 2024 Q2 | 189 | $93.1M | 0 | ||
| 2024 Q1 | 217 | $105.1M | 0 | ||
| 2023 Q4 | 200 | $95.8M | 0 | ||
| 2023 Q3 | 212 | $88.9M | 0 | ||
| 2023 Q2 | 200 | $93.0M | 0 | ||
| 2023 Q1 | 195 | $92.7M | 0 | ||
| 2022 Q4 | 181 | $81.8M | 0 | ||
| 2022 Q3 | 191 | $77.2M | 0 | ||
| 2022 Q2 | 185 | $77.5M | 0 | ||
| 2022 Q1 | 216 | $117.9M | 0 | ||
| 2021 Q4 | 247 | $148.1M | 0 | ||
| 2021 Q3 | 248 | $133.0M | 0 | ||
| 2021 Q2 | 242 | $127.5M | 97 | ||
| 2021 Q1 | 247 | $120.4M | 49 | ||
| 2020 Q4 | 219 | $111.1M | 47 | ||
| 2020 Q3 | 235 | $107.0M | 49 | ||
| 2020 Q2 | 253 | $111.6M | 98 | ||
| 2020 Q1 | 237 | $98.9M | 89 | ||
| 2019 Q4 | 284 | $186.2M | 27 | ||
| 2019 Q3 | 296 | $185.7M | 65 | 1RWT 5.625 11-15-192PRAA 3 08-01-203PMT 5.375 05-01-20 | |
| 2019 Q2 | 296 | $264.9M | 59 | 1RWT 5.625 11-15-192PRAA 3 08-01-203PMT 5.375 05-01-20 | |
| 2019 Q1 | 311 | $309.5M | 38 | ||
| 2018 Q4 | 310 | $301.7M | 42 | ||
| 2018 Q3 | 342 | $341.6M | 40 | ||
| 2018 Q2 | 343 | $344.8M | 32 | ||
| 2018 Q1 | 367 | $337.7M | 24 | ||
| 2017 Q4 | 362 | $346.7M | 81 | ||
| 2017 Q3 | 369 | $381.5M | 52 | ||
| 2017 Q2 | 303 | $313.6M | 44 | ||
| 2017 Q1 | 341 | $383.6M | 29 | ||
| 2016 Q4 | 363 | $394.4M | 69 | ||
| 2016 Q3 | 289 | $459.4M | 36 | ||
| 2016 Q2 | 305 | $439.9M | 35 | ||
| 2016 Q1 | 360 | $515.4M | 44 | ||
| 2015 Q4 | 389 | $565.0M | 46 | ||
| 2015 Q3 | 452 | $604.1M | 56 | ||
| 2015 Q2 | 474 | $571.0M | 32 | ||
| 2015 Q1 | 475 | $553.3M | 53 | ||
| 2014 Q4 | 432 | $478.6M | 32 | ||
| 2014 Q3 | 456 | $521.2M | 19 | ||
| 2014 Q2 | 475 | $538.1M | 35 | ||
| 2014 Q1 | 454 | $525.2M | 20 | ||
| 2013 Q4 | 414 | $497.0M | 23 | ||
| 2013 Q3 | 368 | $467.2M | 41 | ||
| 2013 Q2 | 330 | $474.2M | 0 |
Holding changes this quarter
Yorktown Management & Research Co Inc's most significant position changes for 2026-06-30: New buy: Bloom Energy Corp- A (BE); New buy: Semtech CORP (SMTC); New buy: Liquidia CORP (LQDA); New buy: Forgent Power Solutions Inc (FPS); New buy: Lifestance Health Group Inc (LFST).
Showing top 200 changes by size (of 296 total)
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | BE | Bloom Energy Corp- A | +0.8% | NEW | New buy |
| 2 | SMTC | Semtech CORP | +0.7% | NEW | New buy |
| 3 | LQDA | Liquidia CORP | +0.6% | NEW | New buy |
| 4 | ACMR | Acm Research Inc-class A | +0.6% | — | Unchanged |
| 5 | FPS | Forgent Power Solutions Inc | +0.6% | NEW | New buy |
| 6 | LFST | Lifestance Health Group Inc | +0.6% | NEW | New buy |
| 7 | KLAC | Kla CORP | +0.5% | +900.00% | Add |
| 8 | DNLI | Denali Therapeutics Inc | +0.5% | NEW | New buy |
| 9 | GH | Guardant Health Inc | +0.5% | +41.24% | Add |
| 10 | BEAM | Beam Therapeutics Inc | +0.5% | NEW | New buy |
| 11 | IONQ | Ionq Inc | +0.4% | +167.14% | Add |
| 12 | LTH | Life Time Group Holdings Inc | +0.4% | NEW | New buy |
| 13 | PACS | Pacs Group Inc | +0.4% | NEW | New buy |
| 14 | U | Unity Software Inc | +0.4% | NEW | New buy |
| 15 | CORT | Corcept Therapeutics Inc | +0.4% | NEW | New buy |
| 16 | HNGE | Hinge Health Inc-a | +0.3% | NEW | New buy |
| 17 | CECO | Ceco Environmental CORP | +0.3% | +33.40% | Add |
| 18 | TWST | Twist Bioscience CORP | +0.3% | NEW | New buy |
| 19 | TTMI | Ttm Technologies | +0.3% | NEW | New buy |
| 20 | BRKR | Bruker CORP | +0.3% | NEW | New buy |
| 21 | DY | Dycom Industries Inc | +0.3% | +57.59% | Add |
| 22 | OSCR | Oscar Health Inc - Class A | +0.3% | NEW | New buy |
| 23 | ONDS | Ondas Inc | +0.3% | NEW | New buy |
| 24 | ALKS | Alkermes plc | +0.3% | NEW | New buy |
| 25 | VCYT | Veracyte Inc | +0.3% | NEW | New buy |
| 26 | RIOT | Riot Platforms Inc | +0.3% | NEW | New buy |
| 27 | XMTR | Xometry Inc-a | +0.3% | — | Unchanged |
| 28 | RLAY | Relay Therapeutics Inc | +0.3% | NEW | New buy |
| 29 | VC | Visteon CORP | +0.3% | NEW | New buy |
| 30 | NAVN | Navan Inc-cl A | +0.3% | NEW | New buy |
| 31 | ARQT | Arcutis Biotherapeutics Inc | +0.3% | NEW | New buy |
| 32 | TVTX | Travere Therapeutics Inc | +0.3% | NEW | New buy |
| 33 | BLLN | Billiontoone Inc Cl A | +0.3% | NEW | New buy |
| 34 | LEGN | Legend Biotech Corp-adr | +0.3% | NEW | New buy |
| 35 | LGND | Ligand Pharmaceuticals | +0.3% | NEW | New buy |
| 36 | DDOG | Datadog Inc - Class A | +0.2% | — | Unchanged |
| 37 | LNTH | Lantheus Holdings Inc | +0.2% | NEW | New buy |
| 38 | AIR | Aar CORP | +0.2% | NEW | New buy |
| 39 | GRAL | Grail Inc | +0.2% | NEW | New buy |
| 40 | CRDO | Credo Technology Group Holding Ltd | +0.2% | — | Unchanged |
| 41 | GVA | Granite Construction Inc | +0.2% | NEW | New buy |
| 42 | TRNS | Transcat Inc | +0.2% | NEW | New buy |
| 43 | AXSM | Axsome Therapeutics Inc | +0.2% | +34.72% | Add |
| 44 | RYTM | Rhythm Pharmaceuticals Inc | +0.2% | NEW | New buy |
| 45 | WBI | Waterbridge Infrastruc-cl A | +0.2% | NEW | New buy |
| 46 | EXEL | Exelixis Inc | +0.2% | NEW | New buy |
| 47 | RARE | Ultragenyx Pharmaceutical In | +0.2% | NEW | New buy |
| 48 | SNDR | Schneider National Inc-cl B | +0.2% | NEW | New buy |
| 49 | ASIC | Ategrity Specialty Holdings | +0.2% | NEW | New buy |
| 50 | SRRK | Scholar Rock Holding CORP | +0.2% | NEW | New buy |
1–50 of 200
Filing History
FAQ
What is Yorktown Management & Research Co Inc and what type of investor is it?
Yorktown Management & Research Co Inc is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-06-30), the firm manages a tracked equity portfolio valued at approximately $163.3M, spread across 249 disclosed positions.
What are Yorktown Management & Research Co Inc's largest equity positions?
Based on the latest 13F filing, Yorktown Management & Research Co Inc's top holdings by market value are:
1. Comfort Systems USA Inc (FIX) — $5.9M (3.6%)
2. Ies Holdings Inc (IESC) — $4.0M (2.5%)
3. Kla CORP (KLAC) — $2.7M (1.6%)
4. Ishares Convertible Bond ETF (ICVT) — $2.4M (1.5%)
5. Ss Spdr Bb Conv Sec ETF (CWB) — $2.2M (1.3%)
What changes did Yorktown Management & Research Co Inc make in its most recent portfolio filing?
In the latest reported quarter, Yorktown Management & Research Co Inc made 154 notable position adjustments: 82 new positions were initiated, 20 existing holdings were added to, 5 positions were partially reduced, and 47 were completely exited. The largest of these moves: New buy: Bloom Energy Corp- A (BE); New buy: Semtech CORP (SMTC); New buy: Liquidia CORP (LQDA); New buy: Forgent Power Solutions Inc (FPS); New buy: Lifestance Health Group Inc (LFST)
What sectors does Yorktown Management & Research Co Inc focus on?
Yorktown Management & Research Co Inc is concentrated in the following sectors based on its current disclosed equity portfolio:
• Industrials: 34.3%
• Information Technology: 25.1%
• Health Care: 16.1%
• Financials: 12.9%
• Consumer Discretionary: 6.9%
• Materials: 2.1%
Investment Profile
Yorktown Management & Research Co Inc returned an annualized 9.2% over the trailing 36 months — underperforming the S&P 500 by 13.3 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 1.19 (more volatile than the market) and a 42% quarterly batting average against the index.
Its portfolio is broadly diversified and fast-trading, with 34.3% of the portfolio concentrated in Industrials.
Its turnover score has risen from 0 to 57 over the past 4 quarters — a shift toward more active trading.
It has added to its FIX position over the past two quarters (+$2.6M, now $5.9M), while trimming INSM over the same stretch (-$825.8K, still holding $845.0K).
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Developer Access
Access Yorktown Management & Research Co Inc's institutional profile programmatically:
REST API
curl https://alphasmo.com/api/v1/institutions/yorktown-management-research-co-incCLI
npx alphasmo institutions get yorktown-management-research-co-inc