CIK: 0001426940
Total reported value
$287.5M
Reporting period: 2026-03-31 · Number of holdings: 137
Horizon Investment Services, LLC disclosed 137 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $287.5M and a quarterly turnover rate of 32.5%.
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Horizon Investment Services, LLC's disclosed holdings carry a Herfindahl concentration index of 0.022 — mathematically equivalent to about 46 equally-sized positions, well below its 137 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 1.42), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Trim APP
-10.9% -$5.2M
Add JBL
+652.8% $2.9M
Trim MSFT
-2.1% -$2.5M
Add AEP
+1159.8% $2.8M
Trim NVDA
-3.3% -$2.0M
Add CB
+293.5% $2.6M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | NVDA | Nvidia CORP | Stock-Tech | 6.65% | -0.96% | -3.26% | |
| 2 | VCSH | Vanguard S/t CORP Bond ETF | ETF-Corp Bonds | 5.49% | — | -1.39% | |
| 3 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 4.55% | -0.77% | -3.75% | |
| 4 | LRCX | Lam Research CORP | Stock-Tech | 4.06% | +4.06% | NEW | |
| 5 | AVGO | Broadcom INC | Stock-Tech | 3.23% | -0.59% | -2.01% | |
| 6 | SPHY | Ss Spdr P High Yield ETF | ETF-High Yield | 2.83% | — | -0.64% | |
| 7 | AAPL | Apple INC | Stock-Tech | 2.62% | -0.40% | -3.89% | |
| 8 | MSFT | Microsoft CORP | Stock-Tech | 2.56% | -0.98% | -2.15% | |
| 9 | FIX | Comfort Systems USA INC | Stock-Industrials | 2.47% | +0.61% | -6.86% | |
| 10 | APP | Applovin Corp-class A | Stock-Tech | 2.00% | -1.92% | -10.87% | |
| 11 | IDMO | Invesco S&p International De | ETF-Other | 1.90% | +0.21% | +17.72% | |
| 12 | EME | Emcor Group INC | Stock-Industrials | 1.87% | +0.15% | -6.72% | |
| 13 | MU | Micron Technology INC | Stock-Tech | 1.87% | +0.36% | +8.23% | |
| 14 | AMZN | Amazon.com INC | Stock-Consumer Disc | 1.84% | -0.32% | -1.93% | |
| 15 | META | Meta Platforms Inc-class A | Stock-Comm Services | 1.80% | -0.34% | +0.44% | |
| 16 | APH | Amphenol Corp-cl A | Stock-Tech | 1.69% | -0.24% | -3.23% | |
| 17 | V | Visa Inc-class A Shares | Stock-Financials | 1.67% | -0.40% | -3.25% | |
| 18 | HIG | Hartford Insurance Group INC | Stock-Financials | 1.61% | — | -0.01% | |
| 19 | NTRS | Northern Trust CORP | Stock-Financials | 1.42% | — | -0.65% | |
| 20 | AMAT | Applied Materials INC | Stock-Tech | 1.37% | +0.26% | -4.51% | |
| 21 | SPY | Ss Spdr S&p 500 ETF Trust-us | ETF-Large Cap & Growth | 1.36% | — | +0.02% | |
| 22 | KLAC | Kla CORP | Stock-Tech | 1.35% | +0.35% | +15.86% | |
| 23 | AXP | American Express Co | Stock-Financials | 1.32% | -0.40% | -2.71% | |
| 24 | ESQ | Esquire Financial Holdings I | Stock-Other | 1.31% | — | -2.76% | |
| 25 | IWB | Ishares Russell 1000 ETF | ETF-Other | 1.30% | — | +1.83% | |
| 26 | MGK | Vanguard Mega Cap Growth ETF | ETF-Other | 1.29% | — | +1.97% | |
| 27 | STRL | Sterling Infrastructure INC | Stock-Industrials | 1.24% | — | -31.22% | |
| 28 | FBND | Fidelity Total Bond ETF | ETF-Other | 1.24% | — | +0.74% | |
| 29 | CB | Chubb Limited | Stock-Financials | 1.20% | +0.90% | +293.52% | |
| 30 | TEL | TE Connectivity plc | Stock-Tech | 1.17% | — | +21.48% | |
| 31 | JBL | Jabil INC | Stock-Tech | 1.14% | +1.01% | +652.78% | |
| 32 | LLY | Eli Lilly & Co | Stock-Healthcare | 1.12% | +0.60% | +160.00% | |
| 33 | AEP | American Electric Power | Stock-Utilities | 1.04% | +0.97% | +1159.78% | |
| 34 | PGR | Progressive CORP | Stock-Financials | 1.03% | -0.22% | -2.32% | |
| 35 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 0.97% | — | -2.55% | |
| 36 | FLS | Flowserve CORP | Stock-Industrials | 0.92% | +0.63% | +205.67% | |
| 37 | TTMI | Ttm Technologies | Stock-Tech | 0.89% | +0.19% | -6.51% | |
| 38 | GMED | Globus Medical INC - A | Stock-Healthcare | 0.87% | +0.32% | +65.48% | |
| 39 | FTI | TechnipFMC plc | Stock-Energy | 0.86% | +0.86% | NEW | |
| 40 | SCHW | Schwab (charles) CORP | Stock-Financials | 0.85% | — | +4.08% | |
| 41 | BKNG | Booking Holdings INC | Stock-Consumer Disc | 0.82% | -0.34% | -6.98% | |
| 42 | MGV | Vanguard Mega Cap Value ETF | ETF-Other | 0.81% | — | +3.54% | |
| 43 | IMCG | Ishares Morningstar Mid-cap | ETF-Other | 0.74% | +0.16% | +34.05% | |
| 44 | AEE | Ameren Corporation | Stock-Utilities | 0.72% | — | -1.07% | |
| 45 | EXPE | Expedia Group INC | Stock-Consumer Disc | 0.70% | +0.57% | +577.61% | |
| 46 | HALO | Halozyme Therapeutics INC | Stock-Healthcare | 0.69% | — | +0.59% | |
| 47 | PAHC | Phibro Animal Health Corp-a | Stock-Other | 0.69% | +0.24% | +7.48% | |
| 48 | FESM | Fidelity Enhanced Small Cap | ETF-Small Cap | 0.67% | — | +8.60% | |
| 49 | RMD | Resmed INC | Stock-Healthcare | 0.66% | — | +1.06% | |
| 50 | SPMO | Invesco S&p 500 Momentum ETF | ETF-Large Cap & Growth | 0.65% | — | +3.70% |
Performance for Q3 2026
+4%
Performance Last 4 Quarters
+30.2%
Based on 84% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 137 | $287.5M | 33 | |
| 2025-12-31 | 139 | $277.9M | 21 | |
| 2025-09-30 | 133 | $264.9M | 50 | |
| 2025-06-30 | 122 | $228.2M | 0 | |
| 2025-03-31 | 110 | $205.9M | 100 | |
| 2024-12-31 | 123 | $235.2M | 0 | |
| 2024-09-30 | 122 | $234.0M | 0 | |
| 2024-06-30 | 109 | $212.1M | 0 | |
| 2024-03-31 | 114 | $204.3M | 0 | |
| 2023-12-31 | 107 | $185.2M | 0 | |
| 2023-09-30 | 102 | $166.3M | 0 | |
| 2023-06-30 | 104 | $163.7M | 0 | |
| 2023-03-31 | 107 | $155.8M | 0 | |
| 2022-12-31 | 101 | $137.8M | 0 | |
| 2022-09-30 | 94 | $138.2M | 0 | |
| 2022-06-30 | 98 | $151.1M | 0 | |
| 2022-03-31 | 111 | $190.9M | 0 | |
| 2021-12-31 | 120 | $218.5M | 0 | |
| 2021-09-30 | 112 | $203.1M | 0 | |
| 2021-06-30 | 113 | $203.7M | 95 | |
| 2021-03-31 | 107 | $186.1M | 38 | |
| 2020-12-31 | 105 | $164.0M | 26 | |
| 2020-09-30 | 101 | $150.4M | 28 | |
| 2020-06-30 | 99 | $143.7M | 35 | |
| 2020-03-31 | 91 | $112.6M | 47 | |
| 2019-12-31 | 100 | $151.6M | 24 | |
| 2019-09-30 | 95 | $150.3M | 36 | |
| 2019-06-30 | 89 | $147.2M | 26 | |
| 2019-03-31 | 87 | $146.7M | 32 | |
| 2018-12-31 | 81 | $126.9M | 62 | |
| 2018-09-30 | 96 | $191.4M | 49 | |
| 2018-06-30 | 95 | $201.2M | 32 | |
| 2018-03-31 | 101 | $221.7M | 45 | |
| 2017-12-31 | 100 | $242.0M | 24 | |
| 2017-09-30 | 101 | $235.6M | 38 | |
| 2017-06-30 | 103 | $223.5M | 43 | |
| 2017-03-31 | 110 | $223.8M | 40 | |
| 2016-12-31 | 103 | $211.4M | 43 | |
| 2016-09-30 | 105 | $197.1M | 42 | |
| 2016-06-30 | 105 | $197.8M | 41 | |
| 2016-03-31 | 108 | $218.6M | 50 | |
| 2015-12-31 | 116 | $233.6M | 37 | |
| 2015-09-30 | 109 | $208.1M | 43 | |
| 2015-06-30 | 129 | $249.5M | 51 | |
| 2015-03-31 | 136 | $241.2M | 53 | |
| 2014-12-31 | 132 | $211.3M | 42 | |
| 2014-09-30 | 128 | $197.5M | 43 | |
| 2014-06-30 | 125 | $205.8M | 36 | |
| 2014-03-31 | 119 | $183.4M | 68 | |
| 2013-12-31 | 112 | $165.4M | 40 | |
| 2013-09-30 | 106 | $146.6M | 54 | |
| 2013-06-30 | 92 | $126.0M | 0 |
Horizon Investment Services, LLC's most significant position changes for 2026-03-31: New buy: Lam Research CORP (LRCX); Sold out: Walt Disney Co/the (DIS); Sold out: General Dynamics CORP (GD); Sold out: Capital One Financial CORP (COF); New buy: TechnipFMC plc (FTI).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | JBL | Jabil INC | +1% | +652.78% | Add |
| 2 | AEP | American Electric Power | +1% | +1159.78% | Add |
| 3 | CB | Chubb Limited | +0.9% | +293.52% | Add |
| 4 | FLS | Flowserve CORP | +0.6% | +205.67% | Add |
| 5 | FIX | Comfort Systems USA INC | +0.6% | -6.86% | Trim |
| 6 | LLY | Eli Lilly & Co | +0.6% | +160.00% | Add |
| 7 | EXPE | Expedia Group INC | +0.6% | +577.61% | Add |
| 8 | NYT | New York Times Co-a | +0.4% | +133.19% | Add |
| 9 | MU | Micron Technology INC | +0.4% | +8.23% | Add |
| 10 | KLAC | Kla CORP | +0.4% | +15.86% | Add |
| 11 | GMED | Globus Medical INC - A | +0.3% | +65.48% | Add |
| 12 | AMAT | Applied Materials INC | +0.3% | -4.51% | Trim |
| 13 | PAHC | Phibro Animal Health Corp-a | +0.2% | +7.48% | Add |
| 14 | IDMO | Invesco S&p International De | +0.2% | +17.72% | Add |
| 15 | TTMI | Ttm Technologies | +0.2% | -6.51% | Trim |
| 16 | VBR | Vanguard Small-cap Value ETF | +0.2% | +170.88% | Add |
| 17 | POWL | Powell Industries INC | +0.2% | -9.23% | Trim |
| 18 | IMCG | Ishares Morningstar Mid-cap | +0.2% | +34.05% | Add |
| 19 | COST | Costco Wholesale CORP | +0.2% | +129.53% | Add |
| 20 | EME | Emcor Group INC | +0.2% | -6.72% | Trim |
| 21 | TSLA | Tesla INC | -0.2% | -21.92% | Trim |
| 22 | PGR | Progressive CORP | -0.2% | -2.32% | Trim |
| 23 | APH | Amphenol Corp-cl A | -0.2% | -3.23% | Trim |
| 24 | AMZN | Amazon.com INC | -0.3% | -1.93% | Trim |
| 25 | IVOV | Vanguard S&p Mid-cap 400 Val | -0.3% | -80.60% | Trim |
| 26 | PRIM | Primoris Services CORP | -0.3% | -56.64% | Trim |
| 27 | BKNG | Booking Holdings INC | -0.3% | -6.98% | Trim |
| 28 | META | Meta Platforms Inc-class A | -0.3% | +0.44% | Add |
| 29 | AXP | American Express Co | -0.4% | -2.71% | Trim |
| 30 | V | Visa Inc-class A Shares | -0.4% | -3.25% | Trim |
| 31 | AAPL | Apple INC | -0.4% | -3.89% | Trim |
| 32 | UBER | Uber Technologies INC | -0.6% | -77.18% | Trim |
| 33 | AVGO | Broadcom INC | -0.6% | -2.01% | Trim |
| 34 | GOOGL | Alphabet Inc-cl A | -0.8% | -3.75% | Trim |
| 35 | NVDA | Nvidia CORP | -1% | -3.26% | Trim |
| 36 | MSFT | Microsoft CORP | -1% | -2.15% | Trim |
| 37 | APP | Applovin Corp-class A | -1.9% | -10.87% | Trim |
| 38 | LRCX | Lam Research CORP | — | NEW | New buy |
| 39 | DIS | Walt Disney Co/the | — | EXIT | Sold out |
| 40 | GD | General Dynamics CORP | — | EXIT | Sold out |
| 41 | COF | Capital One Financial CORP | — | EXIT | Sold out |
| 42 | FTI | TechnipFMC plc | — | NEW | New buy |
| 43 | VEEV | Veeva Systems Inc-class A | — | EXIT | Sold out |
| 44 | DELL | Dell Technologies -c | — | NEW | New buy |
| 45 | QLYS | Qualys INC | — | EXIT | Sold out |
| 46 | 8TG | Thermon Group Holdings INC | — | NEW | New buy |
| 47 | AME | Ametek INC | — | NEW | New buy |
| 48 | IMAX | Imax CORP | — | NEW | New buy |
| 49 | AROC | Archrock INC | — | NEW | New buy |
| 50 | IBEX | IBEX Limited | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-15 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-13 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-05 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-06 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-05 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-12 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-12 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-05 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-07 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-12 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-13 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-07 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-09 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-07 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-09 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-11 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-10 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-11 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-12 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-13 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-14 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-11 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-11-13 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-12 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-05-15 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-14 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-11-14 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-08-13 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-05-15 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-02-14 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-11-14 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-08-13 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-05-14 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-02-13 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-11-13 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-08-14 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-05-16 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-02-15 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-11-15 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-08-15 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-16 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-02-16 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-11-13 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-08-20 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-05-15 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-02-13 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-11-17 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-08-14 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-05-14 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-02-14 | 13F-HR | View on EDGAR |
| 2013-09-30 | 2013-11-14 | 13F-HR | View on EDGAR |
| 2013-06-30 | 2013-08-13 | 13F-HR | View on EDGAR |
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