{
 "schema_version": 1,
 "slug": "silver-bar-100oz",
 "name": "100 oz Silver Bar",
 "metal": "silver",
 "oz": 100,
 "first_snapshot": "2026-10-15T05:00:54+00:00",
 "last_snapshot": "2026-11-11T14:49:33+00:00",
 "days_with_data": 27,
 "snapshots": 516,
 "daily": [
  {
   "date": "2026-10-15",
   "snapshots": 20,
   "dealers_quoted": 8,
   "median_premium_pct": 7.74,
   "lowest_premium_pct": 2.22,
   "spread_pp": 11.82,
   "spot_avg": 56.84
  },
  {
   "date": "2026-10-16",
   "snapshots": 7,
   "dealers_quoted": 7,
   "median_premium_pct": 3.38,
   "lowest_premium_pct": 2.24,
   "spread_pp": 11.73,
   "spot_avg": 57.57
  },
  {
   "date": "2026-10-17",
   "snapshots": 2,
   "dealers_quoted": 7,
   "median_premium_pct": 3.44,
   "lowest_premium_pct": 2.3,
   "spread_pp": 11.73,
   "spot_avg": 57.12
  },
  {
   "date": "2026-10-18",
   "snapshots": 12,
   "dealers_quoted": 7,
   "median_premium_pct": 3.44,
   "lowest_premium_pct": 2.3,
   "spread_pp": 11.73,
   "spot_avg": 57.37
  },
  {
   "date": "2026-10-19",
   "snapshots": 32,
   "dealers_quoted": 7,
   "median_premium_pct": 3.89,
   "lowest_premium_pct": 2.19,
   "spread_pp": 11.83,
   "spot_avg": 57.34
  },
  {
   "date": "2026-10-20",
   "snapshots": 22,
   "dealers_quoted": 6,
   "median_premium_pct": 3.86,
   "lowest_premium_pct": 2.22,
   "spread_pp": 11.61,
   "spot_avg": 57.82
  },
  {
   "date": "2026-10-21",
   "snapshots": 7,
   "dealers_quoted": 6,
   "median_premium_pct": 3.86,
   "lowest_premium_pct": 2.48,
   "spread_pp": 11.35,
   "spot_avg": 57.96
  },
  {
   "date": "2026-10-22",
   "snapshots": 23,
   "dealers_quoted": 7,
   "median_premium_pct": 3.92,
   "lowest_premium_pct": 2.57,
   "spread_pp": 11.93,
   "spot_avg": 55.02
  },
  {
   "date": "2026-10-23",
   "snapshots": 27,
   "dealers_quoted": 6,
   "median_premium_pct": 4.12,
   "lowest_premium_pct": 2.75,
   "spread_pp": 12.13,
   "spot_avg": 54.06
  },
  {
   "date": "2026-10-24",
   "snapshots": 30,
   "dealers_quoted": 7,
   "median_premium_pct": 4.81,
   "lowest_premium_pct": 2.77,
   "spread_pp": 12.06,
   "spot_avg": 54.05
  },
  {
   "date": "2026-10-25",
   "snapshots": 31,
   "dealers_quoted": 7,
   "median_premium_pct": 5.39,
   "lowest_premium_pct": 2.77,
   "spread_pp": 12.06,
   "spot_avg": 54.06
  },
  {
   "date": "2026-10-26",
   "snapshots": 18,
   "dealers_quoted": 8,
   "median_premium_pct": 4.17,
   "lowest_premium_pct": 2.67,
   "spread_pp": 12.21,
   "spot_avg": 54.1
  },
  {
   "date": "2026-10-27",
   "snapshots": 7,
   "dealers_quoted": 6,
   "median_premium_pct": 4.48,
   "lowest_premium_pct": 2.55,
   "spread_pp": 12.31,
   "spot_avg": 54.18
  },
  {
   "date": "2026-10-28",
   "snapshots": 2,
   "dealers_quoted": 6,
   "median_premium_pct": 4.45,
   "lowest_premium_pct": 2.32,
   "spread_pp": 12.58,
   "spot_avg": 54.06
  },
  {
   "date": "2026-10-29",
   "snapshots": 18,
   "dealers_quoted": 7,
   "median_premium_pct": 4.42,
   "lowest_premium_pct": 2.66,
   "spread_pp": 12.78,
   "spot_avg": 52.22
  },
  {
   "date": "2026-10-30",
   "snapshots": 26,
   "dealers_quoted": 7,
   "median_premium_pct": 6.07,
   "lowest_premium_pct": 1.78,
   "spread_pp": 14.33,
   "spot_avg": 49.68
  },
  {
   "date": "2026-10-31",
   "snapshots": 24,
   "dealers_quoted": 7,
   "median_premium_pct": 6.09,
   "lowest_premium_pct": 1.13,
   "spread_pp": 15.11,
   "spot_avg": 49.25
  },
  {
   "date": "2026-11-01",
   "snapshots": 22,
   "dealers_quoted": 7,
   "median_premium_pct": 6.09,
   "lowest_premium_pct": 1.13,
   "spread_pp": 15.11,
   "spot_avg": 49.49
  },
  {
   "date": "2026-11-02",
   "snapshots": 7,
   "dealers_quoted": 7,
   "median_premium_pct": 6.13,
   "lowest_premium_pct": 0.71,
   "spread_pp": 13.42,
   "spot_avg": 50.87
  },
  {
   "date": "2026-11-04",
   "snapshots": 20,
   "dealers_quoted": 7,
   "median_premium_pct": 6.02,
   "lowest_premium_pct": 2.72,
   "spread_pp": 9.81,
   "spot_avg": 52.42
  },
  {
   "date": "2026-11-05",
   "snapshots": 19,
   "dealers_quoted": 7,
   "median_premium_pct": 6.41,
   "lowest_premium_pct": 2.79,
   "spread_pp": 9.85,
   "spot_avg": 52.27
  },
  {
   "date": "2026-11-06",
   "snapshots": 23,
   "dealers_quoted": 7,
   "median_premium_pct": 6.84,
   "lowest_premium_pct": 2.88,
   "spread_pp": 9.87,
   "spot_avg": 52.07
  },
  {
   "date": "2026-11-07",
   "snapshots": 19,
   "dealers_quoted": 7,
   "median_premium_pct": 7.01,
   "lowest_premium_pct": 2.88,
   "spread_pp": 10.05,
   "spot_avg": 52.07
  },
  {
   "date": "2026-11-08",
   "snapshots": 21,
   "dealers_quoted": 7,
   "median_premium_pct": 7.01,
   "lowest_premium_pct": 2.88,
   "spread_pp": 10.05,
   "spot_avg": 52.38
  },
  {
   "date": "2026-11-09",
   "snapshots": 27,
   "dealers_quoted": 7,
   "median_premium_pct": 6.68,
   "lowest_premium_pct": 2.84,
   "spread_pp": 12.48,
   "spot_avg": 53.11
  },
  {
   "date": "2026-11-10",
   "snapshots": 37,
   "dealers_quoted": 8,
   "median_premium_pct": 6.64,
   "lowest_premium_pct": 2.87,
   "spread_pp": 12.87,
   "spot_avg": 52.16
  },
  {
   "date": "2026-11-11",
   "snapshots": 13,
   "dealers_quoted": 8,
   "median_premium_pct": 6.55,
   "lowest_premium_pct": 2.75,
   "spread_pp": 12.57,
   "spot_avg": 53.03
  }
 ],
 "dealers": [
  {
   "dealer": "bullionstandard",
   "snapshots": 503,
   "coverage_pct": 97.5,
   "avg_premium_pct": 3.34,
   "avg_rank": 1.94,
   "vs_market_median_pp": -2.03,
   "times_cheapest": 115,
   "premium_volatility_pp": 0.75,
   "price_changes": 330,
   "dealer_name": "Bullion Standard"
  },
  {
   "dealer": "monument",
   "snapshots": 501,
   "coverage_pct": 97.1,
   "avg_premium_pct": 2.84,
   "avg_rank": 1.95,
   "vs_market_median_pp": -2.54,
   "times_cheapest": 210,
   "premium_volatility_pp": 0.23,
   "price_changes": 316,
   "dealer_name": "Monument Metals"
  },
  {
   "dealer": "agate",
   "snapshots": 248,
   "coverage_pct": 48.1,
   "avg_premium_pct": 4.98,
   "avg_rank": 3.06,
   "vs_market_median_pp": -1.4,
   "times_cheapest": 71,
   "premium_volatility_pp": 2.57,
   "price_changes": 88,
   "dealer_name": "Agate Metals"
  },
  {
   "dealer": "sdbullion",
   "snapshots": 512,
   "coverage_pct": 99.2,
   "avg_premium_pct": 5.58,
   "avg_rank": 3.3,
   "vs_market_median_pp": 0.15,
   "times_cheapest": 119,
   "premium_volatility_pp": 2.99,
   "price_changes": 144,
   "dealer_name": "SD Bullion"
  },
  {
   "dealer": "summit",
   "snapshots": 502,
   "coverage_pct": 97.3,
   "avg_premium_pct": 5.55,
   "avg_rank": 3.86,
   "vs_market_median_pp": 0.19,
   "times_cheapest": 0,
   "premium_volatility_pp": 0.79,
   "price_changes": 321,
   "dealer_name": "Summit Metals"
  },
  {
   "dealer": "hero",
   "snapshots": 204,
   "coverage_pct": 39.5,
   "avg_premium_pct": 5.6,
   "avg_rank": 4.59,
   "vs_market_median_pp": 1.42,
   "times_cheapest": 0,
   "premium_volatility_pp": 1.21,
   "price_changes": 15,
   "dealer_name": "Hero Bullion"
  },
  {
   "dealer": "kitco",
   "snapshots": 56,
   "coverage_pct": 10.9,
   "avg_premium_pct": 7.79,
   "avg_rank": 5.04,
   "vs_market_median_pp": 3.16,
   "times_cheapest": 1,
   "premium_volatility_pp": 0.53,
   "price_changes": 44,
   "dealer_name": "Kitco"
  },
  {
   "dealer": "atcost",
   "snapshots": 349,
   "coverage_pct": 67.6,
   "avg_premium_pct": 12.49,
   "avg_rank": 6.14,
   "vs_market_median_pp": 6.42,
   "times_cheapest": 0,
   "premium_volatility_pp": 0.48,
   "price_changes": 210,
   "dealer_name": "At Cost Metals"
  },
  {
   "dealer": "apmex",
   "snapshots": 515,
   "coverage_pct": 99.8,
   "avg_premium_pct": 14.13,
   "avg_rank": 6.36,
   "vs_market_median_pp": 8.7,
   "times_cheapest": 0,
   "premium_volatility_pp": 1.84,
   "price_changes": 340,
   "dealer_name": "APMEX"
  }
 ],
 "method": "Premium % = price / (spot x oz) - 1 with the spot recorded in the same snapshot. vs_market_median_pp = mean over snapshots of (dealer premium - median dealer premium in that snapshot). Daily values are the median across that day's snapshots (ET days). Rank 1 = lowest premium in a snapshot. Vs market median = a dealer's premium minus the median dealer premium in the same snapshot, averaged (negative = below the market). Volatility = population std dev of a dealer's premium % across snapshots (removes spot moves). No values are interpolated; days without snapshots are absent."
}