{
  "name": "Piercr Instagram bio signal corpus (2025-2026) — aggregate statistics",
  "description": "Aggregate statistics from 1,707 public Instagram bios parsed into 2,184 discrete signals across a 21-category taxonomy. Counts and distributions only. No bio text, usernames, quotes or emoji strings are included: the underlying corpus is individual people's own words and is not published.",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "attribution": "Piercr — https://www.piercr.com/blog/instagram-bio-signals",
  "temporal_coverage": "2025-10/2026-01",
  "measurement_technique": "Language-model extraction against a fixed 21-category taxonomy",
  "totals": {
    "bios": 1707,
    "signals": 2184,
    "bios_with_at_least_one_signal": 1172,
    "mean_signals_per_bio": 1.28
  },
  "limitations": [
    "Not a random sample of Instagram. These are profiles Piercr users looked up.",
    "88.2% of profiles were predicted female; none were predicted male. No gender comparison is possible.",
    "Geographically skewed: the UK accounts for 218 of 465 named location signals.",
    "Signals were extracted by a language model, so 'no signal' means nothing categorisable was found, not that the bio was empty."
  ],
  "tables": {
    "signal_density": [
      {
        "signals": 0,
        "bios": 536,
        "share_pct": 31.4
      },
      {
        "signals": 1,
        "bios": 528,
        "share_pct": 30.9
      },
      {
        "signals": 2,
        "bios": 367,
        "share_pct": 21.5
      },
      {
        "signals": 3,
        "bios": 198,
        "share_pct": 11.6
      },
      {
        "signals": 4,
        "bios": 66,
        "share_pct": 3.9
      },
      {
        "signals": 5,
        "bios": 10,
        "share_pct": 0.6
      },
      {
        "signals": 6,
        "bios": 1,
        "share_pct": 0.1
      },
      {
        "signals": 7,
        "bios": 1,
        "share_pct": 0.1
      }
    ],
    "categories": [
      {
        "category": "Location",
        "signals": 481,
        "share_of_all_signals_pct": 22,
        "distinct_values": 73,
        "uniqueness_pct": 15
      },
      {
        "category": "Profession",
        "signals": 479,
        "share_of_all_signals_pct": 21.9,
        "distinct_values": 90,
        "uniqueness_pct": 19
      },
      {
        "category": "Emojis",
        "signals": 216,
        "share_of_all_signals_pct": 9.9,
        "distinct_values": 214,
        "uniqueness_pct": 99
      },
      {
        "category": "Sports Performance",
        "signals": 143,
        "share_of_all_signals_pct": 6.5,
        "distinct_values": 53,
        "uniqueness_pct": 37
      },
      {
        "category": "Making Art",
        "signals": 103,
        "share_of_all_signals_pct": 4.7,
        "distinct_values": 43,
        "uniqueness_pct": 42
      },
      {
        "category": "Education",
        "signals": 97,
        "share_of_all_signals_pct": 4.4,
        "distinct_values": 62,
        "uniqueness_pct": 64
      },
      {
        "category": "Quotes",
        "signals": 75,
        "share_of_all_signals_pct": 3.4,
        "distinct_values": 74,
        "uniqueness_pct": 99
      },
      {
        "category": "Star Sign",
        "signals": 71,
        "share_of_all_signals_pct": 3.3,
        "distinct_values": 12,
        "uniqueness_pct": 17
      },
      {
        "category": "Pets",
        "signals": 68,
        "share_of_all_signals_pct": 3.1,
        "distinct_values": 8,
        "uniqueness_pct": 12
      },
      {
        "category": "Travel",
        "signals": 66,
        "share_of_all_signals_pct": 3,
        "distinct_values": 29,
        "uniqueness_pct": 44
      },
      {
        "category": "Sports",
        "signals": 62,
        "share_of_all_signals_pct": 2.8,
        "distinct_values": 21,
        "uniqueness_pct": 34
      },
      {
        "category": "Food",
        "signals": 60,
        "share_of_all_signals_pct": 2.7,
        "distinct_values": 41,
        "uniqueness_pct": 68
      },
      {
        "category": "Design",
        "signals": 58,
        "share_of_all_signals_pct": 2.7,
        "distinct_values": 17,
        "uniqueness_pct": 29
      },
      {
        "category": "Music Performance",
        "signals": 48,
        "share_of_all_signals_pct": 2.2,
        "distinct_values": 19,
        "uniqueness_pct": 40
      },
      {
        "category": "Music",
        "signals": 39,
        "share_of_all_signals_pct": 1.8,
        "distinct_values": 13,
        "uniqueness_pct": 33
      },
      {
        "category": "Language",
        "signals": 32,
        "share_of_all_signals_pct": 1.5,
        "distinct_values": 15,
        "uniqueness_pct": 47
      },
      {
        "category": "Nature",
        "signals": 31,
        "share_of_all_signals_pct": 1.4,
        "distinct_values": 18,
        "uniqueness_pct": 58
      },
      {
        "category": "Art",
        "signals": 20,
        "share_of_all_signals_pct": 0.9,
        "distinct_values": 16,
        "uniqueness_pct": 80
      },
      {
        "category": "Movies / TV",
        "signals": 16,
        "share_of_all_signals_pct": 0.7,
        "distinct_values": 9,
        "uniqueness_pct": 56
      },
      {
        "category": "Vehicles",
        "signals": 12,
        "share_of_all_signals_pct": 0.5,
        "distinct_values": 6,
        "uniqueness_pct": 50
      },
      {
        "category": "Books",
        "signals": 7,
        "share_of_all_signals_pct": 0.3,
        "distinct_values": 2,
        "uniqueness_pct": 29
      }
    ],
    "bio_length": [
      {
        "length_band_chars": "0-19",
        "bios": 449,
        "mean_signals": 0.47,
        "yielded_no_signal_pct": 58.4
      },
      {
        "length_band_chars": "20-49",
        "bios": 413,
        "mean_signals": 0.97,
        "yielded_no_signal_pct": 38.3
      },
      {
        "length_band_chars": "50-99",
        "bios": 428,
        "mean_signals": 1.68,
        "yielded_no_signal_pct": 16.6
      },
      {
        "length_band_chars": "100-150",
        "bios": 417,
        "mean_signals": 2.05,
        "yielded_no_signal_pct": 10.8
      }
    ],
    "privacy": [
      {
        "account_type": "public",
        "bios": 0,
        "mean_signals": null,
        "yielded_no_signal_pct": null,
        "mean_bio_length_chars": null
      },
      {
        "account_type": "private",
        "bios": 0,
        "mean_signals": null,
        "yielded_no_signal_pct": null,
        "mean_bio_length_chars": null
      }
    ],
    "co_occurrence": [
      {
        "pair": "Location + Profession",
        "profiles": 200
      },
      {
        "pair": "Profession + Sports Performance",
        "profiles": 73
      },
      {
        "pair": "Education + Profession",
        "profiles": 68
      },
      {
        "pair": "Emojis + Location",
        "profiles": 67
      },
      {
        "pair": "Making Art + Profession",
        "profiles": 53
      },
      {
        "pair": "Emojis + Profession",
        "profiles": 48
      },
      {
        "pair": "Design + Profession",
        "profiles": 43
      },
      {
        "pair": "Location + Travel",
        "profiles": 43
      },
      {
        "pair": "Location + Sports Performance",
        "profiles": 35
      },
      {
        "pair": "Location + Making Art",
        "profiles": 32
      },
      {
        "pair": "Education + Location",
        "profiles": 31
      },
      {
        "pair": "Food + Location",
        "profiles": 31
      },
      {
        "pair": "Location + Pets",
        "profiles": 28
      },
      {
        "pair": "Sports + Sports Performance",
        "profiles": 27
      },
      {
        "pair": "Food + Profession",
        "profiles": 26
      },
      {
        "pair": "Profession + Sports",
        "profiles": 24
      },
      {
        "pair": "Pets + Profession",
        "profiles": 20
      },
      {
        "pair": "Location + Sports",
        "profiles": 19
      },
      {
        "pair": "Music Performance + Profession",
        "profiles": 18
      },
      {
        "pair": "Emojis + Travel",
        "profiles": 17
      }
    ]
  }
}