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One Madison Group LLC — 13F Holdings & Portfolio

CIK 1728278 · latest 13F-HR filed 2026-05-15

Backtest portfolio

One Madison Group LLC manages $865.8M in 13F-reported U.S. long-equity assets across 28 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are XPO (7.57%), CR (7.10%), AMZN (6.50%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 5 new positions, exited 4, added to 9, and trimmed 9.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

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AUM

$865.8M

Long-equity book

Holdings

28

Distinct positions

Period

2026-03-31

Filed 2026-05-15

Q/Q Activity

+5 / −4 / ↑9 / ↓9

vs 2025-12-31

Firm Profile & Key People
Name Title / Status Ownership Type

Top Adds (vs prior quarter)

  • XPO INC$16.1M +32.5%
  • MARTIN MARIETTA MATLS INC$13.1M +32.4%
  • GE VERNOVA INC$9.2M +21.4%
  • SHERWIN WILLIAMS CO$8.5M +61.0%
  • RBC BEARINGS INC$7.9M +32.1%
Show all 9 →

Top Trims

  • TAKE-TWO INTERACTIVE SOFTWAR-$20.0M -32.1%
  • DATADOG INC-$7.8M -32.0%
  • LOAR HOLDINGS INC-$7.0M -14.9%
  • GE AEROSPACE-$5.5M -12.8%
  • HEICO CORP NEW-$5.3M -20.6%
Show all 9 →

New Positions

  • NVIDIA CORPORATION$27.9M
  • FERGUSON ENTERPRISES INC$18.7M
  • JOHNSON CONTROLS INTERNATION$12.0M
  • CLEAN HARBORS INC$6.9M
  • JAMES HARDIE INDS PLC$1.4M
Show all 5 →

Exited Positions

  • TRANSDIGM GROUP INC$25.3M
  • SHOPIFY INC$20.9M
  • BLACKSTONE INC$20.8M
  • MICROSOFT CORP$20.1M
Show all 4 →
All Holdings

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 XPO INC XPO 983793100 $65.5M 7.57% 336,700 SH
2 CRANE COMPANY CR 224408104 $61.5M 7.10% 359,520 SH
3 AMAZON COM INC AMZN 023135106 $56.2M 6.50% 270,000 SH
4 MARTIN MARIETTA MATLS INC MLM 573284106 $53.6M 6.19% 91,000 SH
5 GE VERNOVA INC GEV 36828A101 $52.4M 6.05% 60,000 SH
6 ALPHABET INC GOOG 02079K107 $47.3M 5.47% 165,000 SH
7 TAKE-TWO INTERACTIVE SOFTWAR TTWO 874054109 $42.3M 4.88% 214,000 SH
8 LOAR HOLDINGS INC LOAR 53947R105 $39.8M 4.60% 695,000 SH
9 GE AEROSPACE GE 369604301 $37.9M 4.38% 133,530 SH
10 HILTON WORLDWIDE HLDGS INC HLT 43300A203 $37.4M 4.32% 123,040 SH
11 WOODWARD INC WWD 980745103 $35.9M 4.15% 100,360 SH
12 FERRARI N V RACE N3167Y103 $33.8M 3.91% 100,000 SH
13 RBC BEARINGS INC RBC 75524B104 $32.6M 3.76% 60,000 SH
14 API GROUP CORP APG 00187Y100 $30.4M 3.51% 750,000 SH
15 UNION PAC CORP UNP 907818108 $28.8M 3.33% 118,730 SH
16 NVIDIA CORPORATION NVDA 67066G104 $27.9M 3.22% 160,000 SH
17 NETFLIX INC. NFLX 64110L106 $25.0M 2.89% 260,000 SH
18 SHERWIN WILLIAMS CO SHW 824348106 $22.4M 2.59% 70,000 SH
19 SPOTIFY TECHNOLOGY S A SPOT L8681T102 $20.9M 2.41% 43,000 SH
20 HEICO CORP NEW HEI 422806109 $20.6M 2.38% 75,000 SH
21 OREILLY AUTOMOTIVE INC ORLY 67103H107 $20.3M 2.35% 220,000 SH
22 FERGUSON ENTERPRISES INC FERG 31488V107 $18.7M 2.16% 80,000 SH
23 DATADOG INC DDOG 23804L103 $16.6M 1.92% 140,900 SH
24 INTERACTIVE BROKERS GROUP IN IBKR 45841N107 $14.7M 1.70% 219,375 SH
25 JOHNSON CONTROLS INTERNATION JCI G51502105 $12.0M 1.39% 92,000 SH
26 CLEAN HARBORS INC CLH 184496107 $6.9M 0.80% 24,160 SH
27 META PLATFORMS INC META 30303M102 $2.9M 0.33% 5,000 SH
28 JAMES HARDIE INDS PLC JHX G4253H101 $1.4M 0.17% 76,300 SH
Filing History
Period Filed AUM Holdings Accession
2026-03-31 2026-05-15 $865.8M 28 0001420506-26-001149
2025-12-31 2026-02-17 $866.6M 27 0001420506-26-000582
2025-09-30 2025-11-14 $912.8M 31 0001420506-25-003405