{
  "run": "004-congress-beat-market",
  "as_of": "2026-07-13",
  "source": "QuiverQuant congressional trading (bulk API)",
  "n_trades_total": 114234,
  "date_range": [
    "2012-02-27",
    "2026-07-07"
  ],
  "n_members_total": 342,
  "n_purchases": 53454,
  "n_members_purchases": 250,
  "purchase_mean_excess": -11.66,
  "purchase_median_excess": -43.58,
  "purchase_sd_excess": 399.0,
  "purchase_pct_positive": 29.4,
  "purchase_t": -6.76,
  "purchase_p": 1.4230395554331865e-11,
  "by_party": {
    "Democratic": -5.41,
    "Republican": -18.67
  },
  "by_chamber": {
    "Senate": 12.27,
    "Representatives": -14.69
  },
  "min_buys_for_ranking": 25,
  "n_ranked_members": 133,
  "pct_members_positive": 29.0,
  "n_members_positive": 38,
  "median_member_excess": -19.8,
  "activity_vs_alpha": {
    "n": 133,
    "slope_per_decade": 12.22,
    "slope_ci95": [
      -14.84,
      39.27
    ],
    "r2": 0.0061,
    "p": 0.3733972322476898,
    "intercept": -42.55,
    "y_sd": 74.5,
    "resid_sd": 74.6
  },
  "top": [
    {
      "name": "Sheldon Whitehouse",
      "party": "Democratic",
      "n": 376,
      "mean_excess": 393.0
    },
    {
      "name": "Barbara J  Comstock",
      "party": "Republican",
      "n": 45,
      "mean_excess": 272.8
    },
    {
      "name": "Roger W. Marshall",
      "party": "Republican",
      "n": 77,
      "mean_excess": 235.9
    },
    {
      "name": "Ron Wyden",
      "party": "Democratic",
      "n": 194,
      "mean_excess": 200.2
    },
    {
      "name": "Pat Roberts",
      "party": "Republican",
      "n": 261,
      "mean_excess": 179.0
    },
    {
      "name": "Thomas R. Suozzi",
      "party": "Democratic",
      "n": 322,
      "mean_excess": 162.7
    },
    {
      "name": "Dan Sullivan",
      "party": "Republican",
      "n": 35,
      "mean_excess": 139.0
    },
    {
      "name": "Rub\u00e9n Hinojosa",
      "party": "Democratic",
      "n": 63,
      "mean_excess": 77.4
    }
  ],
  "bottom": [
    {
      "name": "Mo Brooks",
      "party": "Republican",
      "n": 53,
      "mean_excess": -152.9
    },
    {
      "name": "Pat Toomey",
      "party": "Republican",
      "n": 44,
      "mean_excess": -143.9
    },
    {
      "name": "Michael K. Simpson",
      "party": "Republican",
      "n": 43,
      "mean_excess": -135.2
    },
    {
      "name": "Patty Murray",
      "party": "Democratic",
      "n": 78,
      "mean_excess": -127.9
    },
    {
      "name": "Gary Peters",
      "party": "Democratic",
      "n": 59,
      "mean_excess": -125.5
    }
  ],
  "pelosi_portfolio": {
    "return_since_2014": 903.76,
    "spy_same_period": 301.46
  }
}