CIK: 0001728278
Total reported value
$865.8M
Reporting period: 2026-03-31 · Number of holdings: 28
One Madison Group LLC disclosed 28 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $865.8M and a quarterly turnover rate of 34.3%.
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One Madison Group LLC's disclosed holdings carry a Herfindahl concentration index of 0.046 — mathematically equivalent to about 22 equally-sized positions, close to its 28 actual disclosed holdings. Value is spread relatively evenly across the portfolio rather than concentrated in a handful of names.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.56), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 2.2 percentage-point tilt) — a pattern consistent with a momentum-following approach.
Trim TTWO
-11.9% -$20.0M
Add XPO
-7.5% $16.1M
Add MLM
+40.0% $13.1M
Add GEV
-9.1% $9.2M
Add SHW
+62.8% $8.5M
Add RBC
+9.1% $7.9M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | XPO | Xpo INC | Stock-Industrials | 7.57% | +1.86% | -7.47% | |
| 2 | CR | Crane Co | Stock-Industrials | 7.10% | -0.14% | +5.74% | |
| 3 | AMZN | Amazon.com INC | Stock-Consumer Disc | 6.50% | +0.27% | +15.38% | |
| 4 | MLM | Martin Marietta Materials | Stock-Materials | 6.19% | +1.52% | +40.00% | |
| 5 | GEV | GE Vernova INC | Stock-Industrials | 6.05% | +1.07% | -9.09% | |
| 6 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 5.47% | -0.43% | +1.23% | |
| 7 | TTWO | Take-two Interactive Softwre | Stock-Comm Services | 4.88% | -2.30% | -11.93% | |
| 8 | LOAR | Loar Holdings INC | Stock-Other | 4.60% | -0.80% | +1.02% | |
| 9 | GE | General Electric | Stock-Industrials | 4.38% | -0.63% | -5.30% | |
| 10 | HLT | Hilton Worldwide Holdings In | Stock-Consumer Disc | 4.32% | +0.67% | +11.85% | |
| 11 | WWD | Woodward INC | Stock-Industrials | 4.15% | +0.07% | -14.22% | |
| 12 | RACE | Ferrari N.V. | Stock-Consumer Disc | 3.91% | -0.57% | -4.76% | |
| 13 | RBC | RBC Bearings INC | Stock-Industrials | 3.76% | +0.91% | +9.09% | |
| 14 | APG | Api Group CORP | Stock-Industrials | 3.51% | -0.02% | -6.25% | |
| 15 | UNP | Union Pacific CORP | Stock-Industrials | 3.33% | +0.66% | +18.73% | |
| 16 | NVDA | Nvidia CORP | Stock-Tech | 3.22% | +3.22% | NEW | |
| 17 | NFLX | Netflix INC | Stock-Comm Services | 2.89% | +0.10% | +0.78% | |
| 18 | SHW | Sherwin-williams Co/the | Stock-Materials | 2.59% | +0.98% | +62.79% | |
| 19 | SPOT | Spotify Technology S.A. | Stock-Comm Services | 2.41% | -0.20% | +10.26% | |
| 20 | HEI | Heico CORP | Stock-Industrials | 2.38% | -0.61% | -6.25% | |
| 21 | ORLY | O'reilly Automotive INC | Stock-Consumer Disc | 2.35% | +0.67% | +37.50% | |
| 22 | FERG | Ferguson Enterprises INC | Stock-Industrials | 2.16% | +2.16% | NEW | |
| 23 | DDOG | Datadog INC - Class A | Stock-Tech | 1.92% | -0.90% | -21.72% | |
| 24 | IBKR | Interactive Brokers Gro-cl A | Stock-Financials | 1.70% | +0.66% | +56.70% | |
| 25 | JNJ | Johnson & Johnson | Stock-Healthcare | 1.39% | +1.39% | NEW | |
| 26 | CLH | Clean Harbors INC | Stock-Industrials | 0.80% | +0.80% | NEW | |
| 27 | META | Meta Platforms Inc-class A | Stock-Comm Services | 0.33% | -0.51% | -54.55% | |
| 28 | JHX | James Hardie Industries plc | Stock-Other | 0.17% | +0.17% | NEW |
Performance for Q3 2026
+5.8%
Performance Last 4 Quarters
+10.2%
Based on 75% of reported portfolio value with available pricing
One Madison Group LLC's most significant position changes for 2026-03-31: New buy: Nvidia CORP (NVDA); Sold out: Transdigm Group INC (TDG); Sold out: Shopify INC - Class A (SHOP); Sold out: Blackstone INC (BX); Sold out: Microsoft CORP (MSFT).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | XPO | Xpo INC | +1.9% | -7.47% | Trim |
| 2 | MLM | Martin Marietta Materials | +1.5% | +40.00% | Add |
| 3 | GEV | GE Vernova INC | +1.1% | -9.09% | Trim |
| 4 | SHW | Sherwin-williams Co/the | +1% | +62.79% | Add |
| 5 | RBC | RBC Bearings INC | +0.9% | +9.09% | Add |
| 6 | HLT | Hilton Worldwide Holdings In | +0.7% | +11.85% | Add |
| 7 | ORLY | O'reilly Automotive INC | +0.7% | +37.50% | Add |
| 8 | IBKR | Interactive Brokers Gro-cl A | +0.7% | +56.70% | Add |
| 9 | UNP | Union Pacific CORP | +0.7% | +18.73% | Add |
| 10 | AMZN | Amazon.com INC | +0.3% | +15.38% | Add |
| 11 | NFLX | Netflix INC | +0.1% | +0.78% | Add |
| 12 | WWD | Woodward INC | +0.1% | -14.22% | Trim |
| 13 | APG | Api Group CORP | 0% | -6.25% | Trim |
| 14 | CR | Crane Co | -0.1% | +5.74% | Add |
| 15 | SPOT | Spotify Technology S.A. | -0.2% | +10.26% | Add |
| 16 | GOOG | Alphabet Inc-cl C | -0.4% | +1.23% | Add |
| 17 | META | Meta Platforms Inc-class A | -0.5% | -54.55% | Trim |
| 18 | RACE | Ferrari N.V. | -0.6% | -4.76% | Trim |
| 19 | HEI | Heico CORP | -0.6% | -6.25% | Trim |
| 20 | GE | General Electric | -0.6% | -5.30% | Trim |
| 21 | LOAR | Loar Holdings INC | -0.8% | +1.02% | Add |
| 22 | DDOG | Datadog INC - Class A | -0.9% | -21.72% | Trim |
| 23 | TTWO | Take-two Interactive Softwre | -2.3% | -11.93% | Trim |
| 24 | NVDA | Nvidia CORP | — | NEW | New buy |
| 25 | TDG | Transdigm Group INC | — | EXIT | Sold out |
| 26 | SHOP | Shopify INC - Class A | — | EXIT | Sold out |
| 27 | BX | Blackstone INC | — | EXIT | Sold out |
| 28 | MSFT | Microsoft CORP | — | EXIT | Sold out |
| 29 | FERG | Ferguson Enterprises INC | — | NEW | New buy |
| 30 | JNJ | Johnson & Johnson | — | NEW | New buy |
| 31 | CLH | Clean Harbors INC | — | NEW | New buy |
| 32 | JHX | James Hardie Industries plc | — | NEW | New buy |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-15 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-17 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-14 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-14 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-15 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-14 | 13F-HR | View on EDGAR |
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