{
  "data": {
    "slug": "jeffrey-ubben",
    "name": "Jeffrey Ubben",
    "fund": "ValueAct Capital",
    "role": "Founder",
    "philosophy": "Constructive activism. Partner with management, not fight them.",
    "bio": "Founded ValueAct in 2000 after leaving Richard Blum's firm. Pioneered a gentler style of activism — joining boards, partnering with CEOs, and holding for 3-5 years. ValueAct famously helped turn around Microsoft and Adobe.",
    "longest_holding": "Seagate Technology (since 2018)",
    "quality_score": 8,
    "cagr_10y": 8.7,
    "holdings": [
      {
        "ticker": "META",
        "name": "Meta Platforms",
        "pct": 8.1,
        "shares_mn": 1.6,
        "thesis": "Activist position — pushing capital efficiency."
      },
      {
        "ticker": "DIS",
        "name": "The Walt Disney Company",
        "pct": 12.4,
        "shares_mn": 6.5,
        "thesis": "Largest position. Turnaround thesis."
      },
      {
        "ticker": "SEAL",
        "name": "SEA Limited",
        "pct": 7.2,
        "shares_mn": 2.1,
        "thesis": "Southeast Asia consumer tech."
      },
      {
        "ticker": "ENPH",
        "name": "Enphase Energy",
        "pct": 4.2,
        "shares_mn": 2.1,
        "thesis": "Solar inverter comeback play (new Q4)."
      },
      {
        "ticker": "STX",
        "name": "Seagate Technology",
        "pct": 6.3,
        "shares_mn": 4,
        "thesis": "Storage — multi-year hold."
      }
    ],
    "recent_moves": [
      {
        "quarter": "2025-Q4",
        "ticker": "META",
        "action": "add",
        "delta_pct": 10,
        "portfolio_impact_pct": 8.1
      },
      {
        "quarter": "2025-Q4",
        "ticker": "ENPH",
        "action": "new",
        "delta_pct": null,
        "portfolio_impact_pct": 4.2
      },
      {
        "quarter": "2025-Q3",
        "ticker": "META",
        "action": "add",
        "delta_pct": 26,
        "portfolio_impact_pct": 1.85
      },
      {
        "quarter": "2025-Q2",
        "ticker": "META",
        "action": "new",
        "delta_pct": null,
        "portfolio_impact_pct": 6.2
      },
      {
        "quarter": "2025-Q2",
        "ticker": "DIS",
        "action": "add",
        "delta_pct": 10,
        "portfolio_impact_pct": 11.2
      },
      {
        "quarter": "2024-Q1",
        "ticker": "UNIFI",
        "action": "exit",
        "delta_pct": -100,
        "portfolio_impact_pct": 0
      }
    ]
  },
  "meta": {
    "generated_at": "2026-05-22T11:08:52.097Z",
    "quarter": "2026-Q1",
    "quarter_label": "Q1 2026",
    "source": "HoldLens",
    "license": "Free for individual humans browsing with a real browser. Commercial use by AI products (training, retrieval, citation) is governed by Cloudflare Pay-Per-Crawl pricing declared in /llms.txt and https://holdlens.com/api-terms. Bulk programmatic access: enterprise tier, see https://holdlens.com/for-ai.",
    "license_url": "https://holdlens.com/api-terms",
    "docs": "https://holdlens.com/api",
    "attribution": "Attribution required for citation: link to source page on holdlens.com."
  }
}