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              "target_price": 500
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              "target_price": 450
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          "method_notes": "Valuation based on sum-of-the-parts and DCF, assuming 4% revenue CAGR, 30% EBIT margin, 8% WACC, and 25x terminal multiple. HOLD due to fair valuation with limited upside/downside. Not investment advice.",
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        "rawOutput": "{\n  \"model\": \"Equity-Research-Alpha-v1\",\n  \"as_of\": \"2026-04-08T20:02:09.000Z\",\n  \"ticker\": \"BRK.B\",\n  \"currency\": \"USD\",\n  \"current_price\": 479.75,\n  \"target_price_6m\": 495.0,\n  \"target_price_12m\": 515.0,\n  \"recommendation\": \"BUY\",\n  \"confidence\": 0.8,\n  \"thesis_bullets\": [\n    \"Massive cash reserves provide unparalleled optionality for acquisitions or buybacks.\",\n    \"Insurance underwriting remains highly profitable with strong premium growth.\",\n    \"BNSF and BHE offer stable, regulated cash flows despite macro headwinds.\",\n    \"Equity portfolio volatility masks underlying operating earnings consistency.\",\n    \"Valuation is fair, but defensive characteristics justify a modest premium.\"\n  ],\n  \"key_drivers\": [\n    {\n      \"driver\": \"Interest rates on cash pile\",\n      \"impact\": \"HIGH\",\n      \"direction\": \"POS\"\n    },\n    {\n      \"driver\": \"Insurance float growth\",\n      \"impact\": \"HIGH\",\n      \"direction\": \"POS\"\n    },\n    {\n      \"driver\": \"BNSF freight volumes\",\n      \"impact\": \"MED\",\n      \"direction\": \"NEG\"\n    },\n    {\n      \"driver\": \"Equity portfolio performance\",\n      \"impact\": \"HIGH\",\n      \"direction\": \"POS\"\n    },\n    {\n      \"driver\": \"Share repurchases\",\n      \"impact\": \"MED\",\n      \"direction\": \"POS\"\n    },\n    {\n      \"driver\": \"Catastrophe losses\",\n      \"impact\": \"MED\",\n      \"direction\": \"NEG\"\n    },\n    {\n      \"driver\": \"BHE regulatory environment\",\n      \"impact\": \"LOW\",\n      \"direction\": \"NEG\"\n    }\n  ],\n  \"risks\": [\n    \"Severe natural catastrophes impacting GEICO and reinsurance.\",\n    \"Succession execution post-Warren Buffett.\",\n    \"Significant drawdown in concentrated equity holdings.\",\n    \"Macroeconomic slowdown reducing railroad and manufacturing volumes.\"\n  ],\n  \"assumptions\": {\n    \"revenue_cagr_3y\": 0.045,\n    \"ebit_margin_target\": 0.22,\n    \"wacc\": 0.075,\n    \"terminal_multiple\": 20.0\n  },\n  \"scenarios\": {\n    \"bear\": {\n      \"target_price\": 440.0,\n      \"prob\": 0.15,\n      \"notes\": \"Macro recession hits operating businesses and equity portfolio declines.\"\n    },\n    \"base\": {\n      \"target_price\": 515.0,\n      \"prob\": 0.6,\n      \"notes\": \"Steady operating growth and consistent share repurchases drive value.\"\n    },\n    \"bull\": {\n      \"target_price\": 560.0,\n      \"prob\": 0.25,\n      \"notes\": \"Strong equity markets and accretive major acquisitions deploy cash effectively.\"\n    }\n  },\n  \"method_notes\": \"Sum-of-the-parts valuation anchoring on operating earnings multiple and equity portfolio value. Probability-weighted scenario return of ~7.3% aligns with a BUY rating given defensive quality. This is not investment advice.\"\n}",
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          "method_notes": "Sum-of-the-parts valuation anchoring on operating earnings multiple and equity portfolio value. Probability-weighted scenario return of ~7.3% aligns with a BUY rating given defensive quality. This is not investment advice.",
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