Horizon Investment Services, LLC holds a diversified book of 137 stocks worth $287.5M as of Q1 2026 (disclosed May 15, 2026, a ~45-day 13F lag). This quarter they opened Lam Research Corp and trimmed Nvidia Corp. Their largest long position is Nvidia Corp at 7% of the equity book.
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curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/1426940/holdings"
Use Arkolith to show Horizon Investment Services, LLC's latest holdings, largest changes, and filing provenance.
Top-heavy: diversified book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
76% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices, no cost basis
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Nvidia Corporation COM | $19.1M | 109.7K | 6.7% | ▼−3.3% Reduced · −4K sh | |
| 2 | Vanguard Scottsdale FDS SHRT TRM CORP BD | $15.8M | 199.3K | 5.5% | ▼−1.4% Reduced · −3K sh | |
| 3 | Alphabet Inc CAP STK CL A | $13.1M | 45.4K | 4.5% | ▼−3.8% Reduced · −2K sh | |
| 4 | Lam Research Corp COM NEW | $11.7M | 54.6K | 4.1% | ▲New New position | |
| 5 | Broadcom Inc COM | $9.3M | 30.0K | 3.2% | ▼−2.0% Reduced · −617 sh | |
| 6 | SPDR Series Trust STATE STREET SPD | $8.1M | 349.1K | 2.8% | ▼−0.6% Reduced · −2K sh | |
| 7 | Apple Inc COM | $7.5M | 29.7K | 2.6% | ▼−3.9% Reduced · −1K sh | |
| 8 | Microsoft Corp COM | $7.4M | 19.9K | 2.6% | ▼−2.1% Reduced · −436 sh | |
| 9 | Comfort Sys USA Inc COM | $7.1M | 5.1K | 2.5% | ▼−6.9% Reduced · −379 sh | |
| 10 | Applovin Corp COM CL A | $5.7M | 14.4K | 2.0% | ▼−11% Reduced · −2K sh | |
| 11 | Invesco Exch Traded FD TR II S&P INTL MOMNT | $5.5M | 99.8K | 1.9% | ▲+18% Added · +15K sh | |
| 12 | Emcor Group Inc COM | $5.4M | 7.3K | 1.9% | ▼−6.7% Reduced · −526 sh | |
| 13 | Micron Technology Inc COM | $5.4M | 15.9K | 1.9% | ▲+8.2% Added · +1K sh | |
| 14 | Amazon Com Inc COM | $5.3M | 25.5K | 1.8% | ▼−1.9% Reduced · −501 sh | |
| 15 | Meta Platforms Inc CL A | $5.2M | 9.1K | 1.8% | ▲+0.4% Added · +40 sh | |
| 16 | Amphenol Corp CL A | $4.9M | 38.5K | 1.7% | ▼−3.2% Reduced · −1K sh | |
| 17 | Visa Inc COM CL A | $4.8M | 15.9K | 1.7% | ▼−3.3% Reduced · −534 sh | |
| 18 | Hartford Insurance Group Inc COM | $4.6M | 34.2K | 1.6% | ▼~0% Reduced · −4 sh | |
| 19 | Northern TR Corp COM | $4.1M | 29.3K | 1.4% | ▼−0.7% Reduced · −193 sh | |
| 20 | Applied Matls Inc COM | $4.0M | 11.6K | 1.4% | ▼−4.5% Reduced · −546 sh | |
| 21 | State STR SPDR S&P 500 ETF T TR UNIT | $3.9M | 6.0K | 1.4% | ▲~0% Added · +1 sh | |
| 22 | Kla Corp COM NEW | $3.9M | 2.6K | 1.4% | ▲+16% Added · +361 sh | |
| 23 | American Express Co COM | $3.8M | 12.6K | 1.3% | ▼−2.7% Reduced · −350 sh | |
| 24 | Esquire Finl Hldgs Inc COM | $3.8M | 34.9K | 1.3% | ▼−2.8% Reduced · −990 sh | |
| 25 | Ishares TR RUS 1000 ETF | $3.7M | 10.5K | 1.3% | ▲+1.8% Added · +189 sh | |
| 26 | Vanguard World FD MEGA GRWTH IND | $3.7M | 10.1K | 1.3% | ▲+2.0% Added · +195 sh | |
| 27 | Sterling Infrastructure Inc COM | $3.6M | 8.8K | 1.2% | ▼−31% Reduced · −4K sh | |
| 28 | Fidelity Merrimack STR TR TOTAL BD ETF | $3.6M | 78.0K | 1.2% | ▲+0.7% Added · +571 sh | |
| 29 | Chubb Ltd Switz COM | $3.4M | 10.6K | 1.2% | ▲+294% Added · +8K sh | |
| 30 | Te Connectivity PLC ORD SHS | $3.4M | 16.1K | 1.2% | ▲+21% Added · +3K sh | |
| 31 | Jabil Inc COM | $3.3M | 12.3K | 1.1% | ▲+653% Added · +11K sh | |
| 32 | Eli Lilly & Co COM | $3.2M | 3.5K | 1.1% | ▲+160% Added · +2K sh | |
| 33 | American Elec PWR Co Inc COM | $3.0M | 22.7K | 1.0% | ▲13× Added · +21K sh | |
| 34 | Progressive Corp COM | $3.0M | 14.9K | 1.0% | ▼−2.3% Reduced · −354 sh | |
| 35 | Alphabet Inc CAP STK CL C | $2.8M | 9.7K | 1.0% | ▼−2.5% Reduced · −254 sh | |
| 36 | Flowserve Corp COM | $2.6M | 36.0K | 0.9% | ▲+206% Added · +24K sh | |
| 37 | TTM Technologies Inc COM | $2.6M | 26.3K | 0.9% | ▼−6.5% Reduced · −2K sh | |
| 38 | Globus Med Inc CL A | $2.5M | 29.2K | 0.9% | ▲+65% Added · +12K sh | |
| 39 | Technipfmc PLC COM | $2.5M | 35.9K | 0.9% | ▲New New position | |
| 40 | Schwab Charles Corp COM | $2.5M | 26.1K | 0.9% | ▲+4.1% Added · +1K sh | |
| 41 | Booking Holdings Inc COM | $2.4M | 560 | 0.8% | ▼−7.0% Reduced · −42 sh | |
| 42 | Vanguard World FD MEGA CAP VAL ETF | $2.3M | 16.0K | 0.8% | ▲+3.5% Added · +547 sh | |
| 43 | Ishares TR MRGSTR MD CP GRW | $2.1M | 26.9K | 0.7% | ▲+34% Added · +7K sh | |
| 44 | Ameren Corp COM | $2.1M | 18.9K | 0.7% | ▼−1.1% Reduced · −205 sh | |
| 45 | Expedia Group Inc COM NEW | $2.0M | 8.7K | 0.7% | ▲+578% Added · +7K sh | |
| 46 | Halozyme Therapeutics Inc COM | $2.0M | 30.9K | 0.7% | ▲+0.6% Added · +180 sh | |
| 47 | Phibro Animal Health Corp CL A COM | $2.0M | 35.7K | 0.7% | ▲+7.5% Added · +2K sh | |
| 48 | Fidelity Covington Trust ENHANCED SMALL | $1.9M | 51.0K | 0.7% | ▲+8.6% Added · +4K sh | |
| 49 | Resmed Inc COM | $1.9M | 8.4K | 0.7% | ▲+1.1% Added · +88 sh | |
| 50 | Invesco Exch Traded FD TR II S&P 500 MOMNTM | $1.9M | 16.6K | 0.6% | ▲+3.7% Added · +590 sh |
As-of date vs the date the SEC received each filing
Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.