Kirr Marbach & Co LLC holds a focused book of 57 stocks worth $593.8M as of Q2 2026 (disclosed Jul 14, 2026, a ~45-day 13F lag). This quarter they opened Boot Barn Holdings Inc and trimmed Mastec Inc. Their largest long position is Mastec Inc at 9% of the equity book.
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curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/764112/holdings"
Use Arkolith to show KIRR MARBACH & CO LLC /IN/'s latest holdings, largest changes, and filing provenance.
Top-heavy: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
84% 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 | Mastec Inc COM | $55.6M | 133.7K | 9.4% | ▼−17% Reduced · −26K sh | |
| 2 | Emcor Group Inc COM | $48.1M | 58.0K | 8.1% | ▼−0.7% Reduced · −392 sh | |
| 3 | Broadcom Inc COM | $34.9M | 92.4K | 5.9% | ▼−0.2% Reduced · −203 sh | |
| 4 | Alphabet Inc CAP STK CL A | $32.0M | 89.6K | 5.4% | ▲~0% Added · +40 sh | |
| 5 | Vistra Corp COM | $25.8M | 162.9K | 4.4% | ▼−0.2% Reduced · −397 sh | |
| 6 | Autozone Inc COM | $23.4M | 7.3K | 3.9% | ▼−0.8% Reduced · −60 sh | |
| 7 | Invesco Exch TRD SLF Idx FD BULSHS 2026 CB | $19.2M | 985.7K | 3.2% | ▼−3.6% Reduced · −36K sh | |
| 8 | Republic Svcs Inc COM | $18.4M | 86.3K | 3.1% | ▼−2.4% Reduced · −2K sh | |
| 9 | Generac Hldgs Inc COM | $17.6M | 60.1K | 3.0% | ▲+3.8% Added · +2K sh | |
| 10 | Moog Inc CL A | $16.4M | 38.7K | 2.8% | ▲+5.0% Added · +2K sh | |
| 11 | Markel Group Inc COM | $15.9M | 8.1K | 2.7% | ▲+0.1% Added · +12 sh | |
| 12 | Canadian Pacific Kansas City COM | $14.9M | 171.1K | 2.5% | ▲~0% Added · +26 sh | |
| 13 | Invesco Exch TRD SLF Idx FD BULSHS 2027 CB | $14.8M | 755.0K | 2.5% | ▼−2.3% Reduced · −18K sh | |
| 14 | Royalty Pharma PLC SHS CLASS A | $13.4M | 239.5K | 2.3% | ▲+0.7% Added · +2K sh | |
| 15 | Colliers Intl Group Inc SUB VTG SHS | $13.1M | 139.0K | 2.2% | ▲+0.2% Added · +267 sh | |
| 16 | Invesco Exch TRD SLF Idx FD INVSCO BLSH 28 | $13.0M | 636.0K | 2.2% | ▼−1.4% Reduced · −9K sh | |
| 17 | Marathon Pete Corp COM | $12.8M | 49.9K | 2.2% | ▼−0.1% Reduced · −41 sh | |
| 18 | Dollar Tree Inc COM | $12.6M | 104.3K | 2.1% | ▲+0.2% Added · +207 sh | |
| 19 | Invesco Exch TRD SLF Idx FD BULETSHS 2029 | $12.6M | 676.4K | 2.1% | ▼−0.4% Reduced · −3K sh | |
| 20 | Anterix Inc COM | $11.9M | 116.1K | 2.0% | ▲+2.0% Added · +2K sh | |
| 21 | Brookfield Corp CL A LTD VT SH | $11.6M | 273.5K | 2.0% | ▼−0.1% Reduced · −260 sh | |
| 22 | SS&C Tech Hldgs COM | $11.6M | 187.4K | 2.0% | ▼−0.1% Reduced · −185 sh | |
| 23 | Api Group Corp COM STK | $11.6M | 272.8K | 1.9% | ▲~0% Added · +60 sh | |
| 24 | Invesco Exch TRD SLF Idx FD INVSCO 30 CORP | $11.5M | 689.5K | 1.9% | ▲~0% Added · +105 sh | |
| 25 | Brinks Co COM | $9.1M | 96.3K | 1.5% | ▼−0.1% Reduced · −64 sh | |
| 26 | Live Nation Entertainment In COM | $9.0M | 49.2K | 1.5% | ▼~0% Reduced · −24 sh | |
| 27 | Gxo Logistics Incorporated COMMON STOCK | $9.0M | 176.9K | 1.5% | ▲+2.2% Added · +4K sh | |
| 28 | Stride Inc COM | $8.9M | 102.8K | 1.5% | ▲+0.3% Added · +356 sh | |
| 29 | Invesco Exch TRD SLF Idx FD BULETSHS 2031 CP | $8.0M | 488.2K | 1.3% | ▼−0.6% Reduced · −3K sh | |
| 30 | Crocs Inc COM | $6.9M | 57.4K | 1.2% | ▼~0% Reduced · −3 sh | |
| 31 | Visteon Corp COM NEW | $6.9M | 69.7K | 1.2% | ▼−0.6% Reduced · −429 sh | |
| 32 | Standardaero Inc COM | $6.9M | 230.1K | 1.2% | ▲+18% Added · +35K sh | |
| 33 | Icu Med Inc COM | $6.6M | 45.4K | 1.1% | ▲+2.7% Added · +1K sh | |
| 34 | Crane NXT Co COM | $5.9M | 115.8K | 1.0% | ▲+3.3% Added · +4K sh | |
| 35 | Boot Barn Hldgs Inc COM | $5.7M | 34.6K | 1.0% | ▲New New position | |
| 36 | Amrize Ltd SHS | $4.8M | 91.0K | 0.8% | ▲+0.4% Added · +332 sh | |
| 37 | Aebi Schmidt Hldg AG COM | $4.4M | 350.7K | 0.7% | ▼−0.4% Reduced · −1K sh | |
| 38 | BJS WHSL Club Hldgs Inc COM | $4.2M | 48.7K | 0.7% | ▼−4.7% Reduced · −2K sh | |
| 39 | Exxon Mobil Corp COM | $4.2M | 30.4K | 0.7% | ▼−57% Reduced · −41K sh | |
| 40 | C H Robinson Worldwide In COM NEW | $4.0M | 21.2K | 0.7% | ▲+0.1% Added · +30 sh | |
| 41 | Brookfield Asset Managmt Ltd CL A LMT VTG SHS | $2.9M | 64.2K | 0.5% | ▲+9.2% Added · +5K sh | |
| 42 | Peloton Interactive Inc CL A COM | $2.9M | 484.6K | 0.5% | ▲+0.2% Added · +1K sh | |
| 43 | Eli Lilly & Co COM | $2.5M | 2.1K | 0.4% | —Held | |
| 44 | Energy Transfer L P COM UT LTD PTN | $1.8M | 95.4K | 0.3% | ▼−1.4% Reduced · −1K sh | |
| 45 | Cummins Inc COM | $1.3M | 1.8K | 0.2% | ▲+31% Added · +427 sh | |
| 46 | Tri Contl Corp COM | $684K | 19.9K | 0.1% | —Held | |
| 47 | Invesco QQQ TR UNIT SER 1 | $553K | 750 | 0.1% | —Held | |
| 48 | Skyward Specialty Ins Group COM | $513K | 8.8K | 0.1% | —Held | |
| 49 | Ishares TR CORE S&P500 ETF | $490K | 654 | 0.1% | —Held | |
| 50 | Caterpillar Inc COM | $469K | 440 | 0.1% | —Held |
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Jul 14, 2026 | 57 | $593.8M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | Apr 17, 2026 | 57 | $548.7M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Jan 26, 2026 | 58 | $523.2M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Oct 14, 2025 | 57 | $553.9M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Jul 16, 2025 | 55 | $505.7M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | Apr 23, 2025 | 54 | $431.1M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Jan 23, 2025 | 57 | $462.2M | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Oct 17, 2024 | 54 | $447.8M | 13F-HR |
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.