CIK: 0000764112
Total reported value
$593.8M
Reporting period: 2026-06-30 · Number of holdings: 57
KIRR MARBACH & CO LLC /IN/ disclosed 57 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $593.8M and a quarterly turnover rate of 15.8%.
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Kirr Marbach & Co LLC /in/'s disclosed holdings carry a Herfindahl concentration index of 0.038 — mathematically equivalent to about 27 equally-sized positions, well below its 57 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 1.08), 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.
Trim XOM
-57.1% -$7.9M
Add ATEX
+2.0% $7.6M
New buy BOOT
Sold out KMX
Add GNRC
+3.8% $6.3M
Add MOG-A
+5.0% $5.6M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | MTZ | Mastec INC | Stock-Industrials | 9.37% | -0.02% | -16.52% | |
| 2 | EME | Emcor Group INC | Stock-Industrials | 8.10% | +0.25% | -0.67% | |
| 3 | AVGO | Broadcom INC | Stock-Tech | 5.88% | +0.65% | -0.22% | |
| 4 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 5.39% | +0.70% | +0.04% | |
| 5 | VST | Vistra CORP | Stock-Utilities | 4.35% | -0.12% | -0.24% | |
| 6 | AZO | Autozone INC | Stock-Consumer Disc | 3.94% | -0.61% | -0.81% | |
| 7 | BSCQ | Invesco Bulletshares 2026 Cb | ETF-Other | 3.24% | -0.40% | -3.56% | |
| 8 | RSG | Republic Services INC | Stock-Industrials | 3.10% | -0.43% | -2.40% | |
| 9 | GNRC | Generac Holdings INC | Stock-Industrials | 2.97% | +0.91% | +3.80% | |
| 10 | MOG-A | Moog Inc-class A | Stock-Other | 2.76% | +0.79% | +5.04% | |
| 11 | MKL | Markel Group INC | Stock-Financials | 2.67% | -0.16% | +0.15% | |
| 12 | CP | Canadian Pacific Kansas City | Stock-Industrials | 2.50% | +0.04% | +0.02% | |
| 13 | BSCR | Invesco Bulletshares 2027 Cb | ETF-Other | 2.49% | -0.27% | -2.27% | |
| 14 | RPRX | Royalty Pharma plc | Stock-Healthcare | 2.26% | +0.18% | +0.66% | |
| 15 | CIGI | Colliers Intl Gr-subord Vot | Stock-Other | 2.20% | -0.50% | +0.19% | |
| 16 | BSCS | Invesco Bulletshares 2028 Cb | ETF-Other | 2.18% | -0.22% | -1.38% | |
| 17 | MPC | Marathon Petroleum CORP | Stock-Energy | 2.15% | -0.07% | -0.08% | |
| 18 | DLTR | Dollar Tree INC | Stock-Consumer Staples | 2.13% | +0.05% | +0.20% | |
| 19 | BSCT | Invesco Bulletshares 2029 Cb | ETF-Other | 2.12% | -0.19% | -0.45% | |
| 20 | ATEX | Anterix INC | Stock-Other | 2.01% | +1.22% | +1.98% | |
| 21 | BN | Brookfield CORP | Stock-Financials | 1.96% | -0.06% | -0.10% | |
| 22 | SSNC | Ss&c Technologies Holdings | Stock-Tech | 1.96% | -0.35% | -0.10% | |
| 23 | APG | Api Group CORP | Stock-Industrials | 1.95% | -0.06% | +0.02% | |
| 24 | BSCU | Invesco Bulletshares 2030 Cb | ETF-Other | 1.93% | — | +0.02% | |
| 25 | BCO | Brink's Co/the | Stock-Industrials | 1.53% | -0.29% | -0.07% | |
| 26 | LYV | Live Nation Entertainment In | Stock-Comm Services | 1.52% | +0.15% | -0.05% | |
| 27 | GXO | Gxo Logistics INC | Stock-Industrials | 1.51% | — | +2.24% | |
| 28 | LRN | Stride INC | Stock-Consumer Staples | 1.49% | -0.16% | +0.35% | |
| 29 | BSCV | Invesco Bulletshares 2031 Cb | ETF-Other | 1.35% | -0.12% | -0.64% | |
| 30 | CROX | Crocs INC | Stock-Consumer Disc | 1.17% | +0.30% | -0.01% | |
| 31 | VC | Visteon CORP | Stock-Other | 1.16% | — | -0.61% | |
| 32 | SARO | Standardaero INC | Stock-Other | 1.16% | +0.24% | +17.67% | |
| 33 | ICUI | Icu Medical INC | Stock-Other | 1.12% | +0.08% | +2.72% | |
| 34 | CXT | Crane Nxt Co | Stock-Industrials | 1.00% | +0.17% | +3.26% | |
| 35 | BOOT | Boot Barn Holdings INC | Stock-Consumer Disc | 0.96% | +0.96% | NEW | |
| 36 | AMRZ | Amrize Ltd | Stock-Materials | 0.82% | -0.11% | +0.37% | |
| 37 | ✓ | Stock-Other | 0.74% | +0.12% | -0.42% | ||
| 38 | BJ | Bj's Wholesale Club Holdings | Stock-Consumer Staples | 0.71% | -0.20% | -4.67% | |
| 39 | XOM | Exxon Mobil CORP | Stock-Energy | 0.70% | -1.50% | -57.14% | |
| 40 | CHRW | C.h. Robinson Worldwide INC | Stock-Industrials | 0.67% | +0.03% | +0.14% | |
| 41 | BAM | Brookfield Asset Mgmt-a | Stock-Financials | 0.49% | +0.01% | +9.15% | |
| 42 | PTON | Peloton Interactive Inc-a | Stock-Consumer Disc | 0.48% | +0.10% | +0.22% | |
| 43 | LLY | Eli Lilly & Co | Stock-Healthcare | 0.43% | +0.08% | — | |
| 44 | ET | Energy Transfer LP | Stock-Energy | 0.31% | — | -1.45% | |
| 45 | CMI | Cummins INC | Stock-Industrials | 0.22% | +0.08% | +30.96% | |
| 46 | TY | Tri-continental CORP | Stock-Other | 0.12% | — | — | |
| 47 | QQQ | Invesco Qqq Trust Series 1 | ETF-Tech | 0.09% | +0.01% | — | |
| 48 | SKWD | Skyward Specialty Insurance | Stock-Other | 0.09% | +0.02% | — | |
| 49 | IVV | Ishares Core S&p 500 ETF | ETF-Large Cap & Growth | 0.08% | — | — | |
| 50 | CAT | Caterpillar INC | Stock-Industrials | 0.08% | +0.02% | — |
Performance for Q3 2026
-0.9%
Performance Last 4 Quarters
-2.6%
Based on 83% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-06-30 | 57 | $593.8M | 16 | |
| 2026-03-31 | 57 | $548.7M | 21 | |
| 2025-12-31 | 58 | $523.2M | 24 | |
| 2025-09-30 | 57 | $553.9M | 32 | |
| 2025-06-30 | 55 | $505.7M | 0 | |
| 2025-03-31 | 54 | $431.1M | 100 | |
| 2024-12-31 | 57 | $462.2M | 0 | |
| 2024-09-30 | 54 | $447.8M | 0 | |
| 2024-06-30 | 56 | $415.6M | 0 | |
| 2024-03-31 | 54 | $414.7M | 0 | |
| 2023-12-31 | 53 | $381.2M | 0 | |
| 2023-09-30 | 54 | $352.6M | 0 | |
| 2023-06-30 | 49 | $362.4M | 0 | |
| 2023-03-31 | 46 | $322.6M | 0 | |
| 2022-12-31 | 46 | $320.6M | 0 | |
| 2022-09-30 | 47 | $294.9M | 0 | |
| 2022-06-30 | 47 | $318.7M | 0 | |
| 2022-03-31 | 49 | $371.4M | 0 | |
| 2021-12-31 | 60 | $378.2M | 0 | |
| 2021-09-30 | 59 | $341.4M | 0 | |
| 2021-06-30 | 59 | $351.8M | 99 | |
| 2021-03-31 | 59 | $345.6M | 18 | |
| 2020-12-31 | 50 | $319.1M | 19 | |
| 2020-09-30 | 57 | $268.9M | 15 | |
| 2020-06-30 | 58 | $280.5M | 43 | |
| 2020-03-31 | 56 | $233.7M | 71 | |
| 2019-12-31 | 58 | $432.4M | 19 | |
| 2019-09-30 | 57 | $414.9M | 16 | |
| 2019-06-30 | 57 | $408.3M | 17 | |
| 2019-03-31 | 58 | $411.3M | 29 | |
| 2018-12-31 | 61 | $360.7M | 39 | |
| 2018-09-30 | 59 | $451.6M | 23 | |
| 2018-06-30 | 84 | $460.9M | 13 | |
| 2018-03-31 | 83 | $477.1M | 13 | |
| 2017-12-31 | 82 | $497.9M | 15 | |
| 2017-09-30 | 80 | $457.4M | 21 | |
| 2017-06-30 | 82 | $448.7M | 23 | |
| 2017-03-31 | 78 | $448.7M | 22 | |
| 2016-12-31 | 73 | $483.7M | 27 | |
| 2016-09-30 | 73 | $502.8M | 26 | |
| 2016-06-30 | 71 | $466.6M | 25 | |
| 2016-03-31 | 70 | $492.8M | 22 | |
| 2015-12-31 | 62 | $502.9M | 25 | |
| 2015-09-30 | 57 | $491.8M | 26 | |
| 2015-06-30 | 60 | $571.5M | 25 | |
| 2015-03-31 | 56 | $558.3M | 18 | |
| 2014-12-31 | 61 | $541.2M | 34 | |
| 2014-09-30 | 60 | $532.1M | 21 | |
| 2014-06-30 | 58 | $558.5M | 19 | |
| 2014-03-31 | 62 | $568.1M | 15 | |
| 2013-12-31 | 62 | $550.4M | 18 | |
| 2013-09-30 | 61 | $512.6M | 18 | |
| 2013-06-30 | 56 | $469.1M | 0 |
Kirr Marbach & Co LLC /in/'s most significant position changes for 2026-06-30: New buy: Boot Barn Holdings INC (BOOT); Sold out: Carmax INC (KMX); Sold out: Aviat Networks INC (AVNW); New buy: Corning INC (GLW); Trim: Exxon Mobil CORP (XOM) — shares -57.14%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | ATEX | Anterix INC | +1.2% | +1.98% | Add |
| 2 | BOOT | Boot Barn Holdings INC | +1% | NEW | New buy |
| 3 | GNRC | Generac Holdings INC | +0.9% | +3.80% | Add |
| 4 | MOG-A | Moog Inc-class A | +0.8% | +5.04% | Add |
| 5 | GOOGL | Alphabet Inc-cl A | +0.7% | +0.04% | Add |
| 6 | AVGO | Broadcom INC | +0.7% | -0.22% | Trim |
| 7 | CROX | Crocs INC | +0.3% | -0.01% | Trim |
| 8 | EME | Emcor Group INC | +0.3% | -0.67% | Trim |
| 9 | SARO | Standardaero INC | +0.2% | +17.67% | Add |
| 10 | RPRX | Royalty Pharma plc | +0.2% | +0.66% | Add |
| 11 | CXT | Crane Nxt Co | +0.2% | +3.26% | Add |
| 12 | LYV | Live Nation Entertainment In | +0.2% | -0.05% | Trim |
| 13 | ✓ | +0.1% | -0.42% | Trim | |
| 14 | PTON | Peloton Interactive Inc-a | +0.1% | +0.22% | Add |
| 15 | ICUI | Icu Medical INC | +0.1% | +2.72% | Add |
| 16 | LLY | Eli Lilly & Co | +0.1% | — | Unchanged |
| 17 | CMI | Cummins INC | +0.1% | +30.96% | Add |
| 18 | DLTR | Dollar Tree INC | +0.1% | +0.20% | Add |
| 19 | CP | Canadian Pacific Kansas City | 0% | +0.02% | Add |
| 20 | GLW | Corning INC | 0% | NEW | New buy |
| 21 | CHRW | C.h. Robinson Worldwide INC | 0% | +0.14% | Add |
| 22 | CAT | Caterpillar INC | 0% | — | Unchanged |
| 23 | SKWD | Skyward Specialty Insurance | 0% | — | Unchanged |
| 24 | BAM | Brookfield Asset Mgmt-a | 0% | +9.15% | Add |
| 25 | QQQ | Invesco Qqq Trust Series 1 | 0% | — | Unchanged |
| 26 | VC | Visteon CORP | — | -0.61% | Trim |
| 27 | IVV | Ishares Core S&p 500 ETF | — | — | Unchanged |
| 28 | MTZ | Mastec INC | 0% | -16.52% | Trim |
| 29 | OFIX | Orthofix Medical INC | 0% | — | Unchanged |
| 30 | BN | Brookfield CORP | -0.1% | -0.10% | Trim |
| 31 | APG | Api Group CORP | -0.1% | +0.02% | Add |
| 32 | MPC | Marathon Petroleum CORP | -0.1% | -0.08% | Trim |
| 33 | AVNW | Aviat Networks INC | -0.1% | EXIT | Sold out |
| 34 | AMRZ | Amrize Ltd | -0.1% | +0.37% | Add |
| 35 | VST | Vistra CORP | -0.1% | -0.24% | Trim |
| 36 | BSCV | Invesco Bulletshares 2031 Cb | -0.1% | -0.64% | Trim |
| 37 | MKL | Markel Group INC | -0.2% | +0.15% | Add |
| 38 | LRN | Stride INC | -0.2% | +0.35% | Add |
| 39 | BSCT | Invesco Bulletshares 2029 Cb | -0.2% | -0.45% | Trim |
| 40 | BJ | Bj's Wholesale Club Holdings | -0.2% | -4.67% | Trim |
| 41 | BSCS | Invesco Bulletshares 2028 Cb | -0.2% | -1.38% | Trim |
| 42 | BSCR | Invesco Bulletshares 2027 Cb | -0.3% | -2.27% | Trim |
| 43 | BCO | Brink's Co/the | -0.3% | -0.07% | Trim |
| 44 | SSNC | Ss&c Technologies Holdings | -0.4% | -0.10% | Trim |
| 45 | BSCQ | Invesco Bulletshares 2026 Cb | -0.4% | -3.56% | Trim |
| 46 | RSG | Republic Services INC | -0.4% | -2.40% | Trim |
| 47 | CIGI | Colliers Intl Gr-subord Vot | -0.5% | +0.19% | Add |
| 48 | AZO | Autozone INC | -0.6% | -0.81% | Trim |
| 49 | KMX | Carmax INC | -1% | EXIT | Sold out |
| 50 | XOM | Exxon Mobil CORP | -1.5% | -57.14% | Trim |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-06-30 | 2026-07-14 | 13F-HR | View on EDGAR |
| 2026-03-31 | 2026-04-17 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-01-26 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-10-14 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-07-16 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-04-23 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-01-23 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-10-17 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-07-22 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-04-23 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-01-30 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-10-17 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-07-20 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-04-17 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-01-20 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-10-26 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-07-26 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-03 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-01-21 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-10-28 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-07-19 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-04-19 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-01-21 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-10-19 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-07-17 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-04-20 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-01-27 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-10-15 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-07-24 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-04-17 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-01-18 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-10-22 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-07-17 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-04-17 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-01-22 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-10-23 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-07-18 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-04-20 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-01-24 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-10-20 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-07-25 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-04-19 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-01-21 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-11-30 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-07-21 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-04-28 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-01-26 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-10-22 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-07-24 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-04-30 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-01-27 | 13F-HR | View on EDGAR |
| 2013-09-30 | 2013-10-24 | 13F-HR | View on EDGAR |
| 2013-06-30 | 2013-07-23 | 13F-HR | View on EDGAR |
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