RIA

KIRR MARBACH & CO LLC /IN/

Columbus, IN SEC Registered Investment Advisor High Net Worth CIK: 0000764112
13F Score ?
21
3Y · Top 10 · Mgr Wt
13F Score ?
22
7Y · Top 10 · Mgr Wt
S&P 500 ?
80
Benchmark
$549M
AUM
+9.90%
2026 Q1
+14.88%
1-Year Return
+48.94%
Top 10 Concentration
+7.73%
Turnover
+4.89%
AUM Change
Since 1999
First Filing
57
# of Holdings

Fund Overview

13F Filed: 2026-04-17

As of 2026 Q1, Kirr Marbach & Co Llc /in/ manages $549M in reported 13F assets , holds 57 positions with +48.94% top-10 concentration , and delivered a 1-year return of +14.88% on its disclosed equity portfolio. Filing 13F reports since 1999.

About

Investment Strategy

Analytics Summary

Risk Profile

Key Personnel

Mark D. Foster — Managing Director / Chief Investment Officer
Brian J. Kirr — Managing Director
Brad Marbach — Founder
Official 13F Filings — SEC EDGAR Key personnel and Fund Overview may contain mistakes

Activity Summary — 2026 Q1

Q1 2026 13F Filed: Apr 17, 2026

Top Buys

% $
Stock % Impact
+2.76%
+2.08%
+1.13%
+0.92%
+0.75%
+0.71%

Top Sells

% $
Stock % Impact
Sold All 😨 Was: 1.60% -1.53%
-0.95%
-0.75%
Sold All 😨 Was: 0.74% -0.71%
-0.67%
-0.45%

Top Holdings

2026 Q1
Stock %
9.39%
7.85%
5.23%
4.69%
4.55%
4.47%
View All Holdings

Activity Summary

Latest
Market Value $549M
AUM Change +4.89%
New Positions 3
Increased Positions 32
Closed Positions 4
Top 10 Concentration +48.94%
Portfolio Turnover +7.73%
Alt Turnover +10.06%

Sector Allocation Trends

Quarterly History
Free View: Last 10 Quarters. Subscribe to see full history

Holdings Analysis

Size: % of Portfolio Color: Last Full-Quarter Return No data
Free: 10 quarters

Positions Dynamics

Visualizing Top 20 holdings weight history over the last 10 quarters.

Portfolio Analytics — Latest

KIRR MARBACH & CO LLC /IN/ risk dashboard covering volatility, beta, value-at-risk, drawdowns, concentration, factor tilts, benchmark comparison, and stress testing for the latest disclosed portfolio.

Risk access
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Real-time Analytics
High-Conviction Alpha
AAPL 92.4
NVDA 88.1
MSFT 74.3
Strategy Guardian
Style Drift 0.12
Sector Rotation 0.38

Tracking institutional benchmark deviation

Scenario Lab
2008 GFC -32.4%
Covid-19 -18.1%
2022 Bear -24.7%
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Real conviction scores for every holding  ·  Strategy Guardian alerts  ·  Live Scenario Lab stress tests
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Best Strategy vs. Benchmarks

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Returns
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Risk
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Std Deviation
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Max Drawdown
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Beta vs SPY
Quality
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Sharpe
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Win Rate
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Payoff Ratio
Edge Metrics Last 10 quarters only
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Alpha annualized
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Up Capture
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Down Capture

Strategy Backtester: KIRR MARBACH & CO LLC /IN/

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Risk insights! Identify periods when the fund lagged the benchmark – critical for timing entries.

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Underperformance Analysis — Top 10 Holdings vs SPY

Backtesting KIRR MARBACH & CO LLC /IN/'s top 10 holdings against SPY identified 81 underperformance periods. Worst drawdown: 2003-09 – 2004-01 (-22.4% vs SPY, 2 quarters).

Avg. lag: -5.5% vs SPY Avg. duration: 1.9 quarters
Backtest Snapshot — Top 10 Holdings (Mn-Weighted)

The ticker-level breakdown shows how each of KIRR MARBACH & CO LLC /IN/'s top holdings contributed to portfolio returns quarter by quarter. Strongest recent contributors inside the last 5 years of the quarterly Top 10 backtest window: AVGO (2021 Q2 – 2025 Q4, +30.9 pts), EME (2021 Q2 – 2025 Q4, +27.0 pts), VST (2024 Q1 – 2025 Q4, +16.5 pts), MTZ (2021 Q2 – 2025 Q4, +15.9 pts), AZO (2021 Q2 – 2025 Q4, +10.4 pts) .

Strategy ann.: 9.6% SPY ann.: 8.1% Period: 1999–2026
Best Recent Contributors — Last 5Y
All 5 recent top contributors beat SPY, which means this fund's strongest recent return drivers also outperformed the index over the same window.
2021 Q2 – 2025 Q4 • 19Q in Top 10 Beat SPY
AVGO
+768%
SPY
+57%
Contrib
+30.9%
2021 Q2 – 2025 Q4 • 19Q in Top 10 Beat SPY
EME
+590%
SPY
+57%
Contrib
+27.0%
2024 Q1 – 2025 Q4 • 8Q in Top 10 Beat SPY
VST
+140%
SPY
+27%
Contrib
+16.5%
2021 Q2 – 2025 Q4 • 18Q in Top 10 Beat SPY
MTZ
+191%
SPY
+52%
Contrib
+15.9%
2021 Q2 – 2025 Q4 • 19Q in Top 10 Beat SPY
AZO
+123%
SPY
+57%
Contrib
+10.4%
Stock return (green = beat SPY)   Stock return (red = lagged SPY)   SPY same period   Cumulative contribution during the last 5 years of the quarterly Mn-weighted Top 10 strategy

Frequently Asked Questions

What does Kirr Marbach & Co Llc /in/ invest in?
Kirr, Marbach & Company employs a concentrated value investment strategy that represents one of the purest expressions of bottom-up, valuation-driven equity investing among independent advisory firms. The firm's **13F Portfolio Composition** reveals a relatively concentrated portfolio of individual equity positions — typically fewer holdings than diversified managers — reflecting deep-conviction, high-research-intensity security selection where each position represents a meaningful allocation of client capital. The investment philosophy is firmly rooted in the value tradition: identifying companies whose market prices significantly understate intrinsic business value, purchasing them at a margin of safety, and holding them patiently as the market recognizes and prices their true worth. This approach requires rigorous fundamental analysis — detailed examination of financial statements, competitive positioning, management quality, balance sheet strength, and normalized earnings power — to develop independent assessments of intrinsic value that may diverge materially from prevailing market consensus. Sector allocation within the firm's portfolio reflects the natural output of bottom-up value selection rather than top-down sector targeting. Historically, Kirr Marbach's filings reveal recurring exposure to financials and industrials — sectors where value opportunities frequently emerge due to cyclical earnings patterns, asset-heavy balance sheets, and market tendencies to extrapolate short-term weakness into permanent impairment. Technology and healthcare positions also appear selectively, typically in mature, cash-generative companies trading at valuations below their growth-oriented peers rather than in speculative, high-multiple names. The concentrated nature of the portfolio is a deliberate strategic choice that distinguishes Kirr Marbach from diversified equity managers. By maintaining a focused portfolio, the firm ensures that its highest-conviction ideas drive portfolio outcomes rather than being diluted by marginal positions added for diversification purposes. This approach amplifies the impact of successful security selection but also increases the portfolio's sensitivity to individual holding performance — a trade-off that the firm's research-intensive process is designed to manage through thorough due diligence and strict valuation discipline. Portfolio turnover is low, consistent with the patient, long-duration holding philosophy that defines value investing at its best. Kirr Marbach typically holds positions for multiple years, allowing the thesis to develop and the market to converge toward intrinsic value. This patience is a critical competitive advantage in an investment landscape increasingly dominated by short-term horizons and algorithmic trading. The firm's multi-decade filing history allows analysts to observe this patience empirically — tracking how individual positions have been initiated, held through volatility, and ultimately harvested over extended timeframes. The firm's investment commentary, available through its public communications, further reinforces the intellectual rigor and philosophical consistency of its approach. Kirr Marbach's team articulates clear investment theses for portfolio positions, grounding each holding in specific valuation analysis and catalytic reasoning. This transparency of process provides allocators with confidence that the portfolio reflects a coherent, repeatable investment methodology rather than ad hoc decision-making.
What is Kirr Marbach & Co Llc /in/'s AUM?
Kirr Marbach & Co Llc /in/ reported $549M in 13F assets as of 2026 Q1. Note: 13F AUM reflects only long equity positions reported to the SEC and may differ from total assets under management.
How concentrated is Kirr Marbach & Co Llc /in/'s portfolio?
Kirr Marbach & Co Llc /in/ holds 57 disclosed positions. The top 10 holdings represent +48.94% of the reported portfolio, indicating a diversified investment approach.
How to track Kirr Marbach & Co Llc /in/ 13F filings?
Track Kirr Marbach & Co Llc /in/'s quarterly filings on SEC EDGAR or on this page — data is updated within days of each filing deadline. Subscribe to 13Foresight for position-change alerts.
Who manages Kirr Marbach & Co Llc /in/?
Kirr Marbach & Co Llc /in/ is managed by Mark D. Foster (Managing Director / Chief Investment Officer), Brian J. Kirr (Managing Director), Brad Marbach (Founder).

Disclaimer: 13Foresight is not a registered investment adviser, broker-dealer, or financial planner. All information on this site is provided solely for informational and educational purposes and does not constitute investment advice, a solicitation, or a recommendation to buy or sell any security. Portfolio backtests shown on this page are hypothetical and simulated — they do not represent actual trading results and were constructed with the benefit of hindsight. Actual results would differ materially. 13F filings disclose only long equity positions valued above $10,000, submitted up to 45 days after quarter-end; they do not capture short positions, options, bonds, cash, private investments, or non-U.S. securities. A fund's backtest performance may not reflect its actual returns, as managers frequently generate alpha through strategies not visible in 13F data. Past performance is not indicative of future results. All data sourced from public SEC EDGAR filings. Use at your own risk. Full Terms of Use.

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