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AXION

Insiders Institutions

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GET/insiders/:ticker/institutions

Returns the list of institutional investment managers (e.g., Vanguard, BlackRock) that hold shares in the company, based on 13F filings. Includes position size, market value, percentage held, and change since last quarter.

Path Parameters

ParameterTypeRequiredDescription
tickerstringRequiredStock ticker symbol

Examples:

https://api.axionquant.com/insiders/AAPL/institutions
https://api.axionquant.com/insiders/MSFT/institutions

Key Response Fields

reportDate

Filing date of the 13F report

organization

Name of the institutional investment manager

pctHeld

Percentage of total shares outstanding held

position

Number of shares held

value

Market value of the position (in USD)

pctChange

Percentage change in position since prior quarter

|

Institutional Ownership (Apple)

Request

Sample code
1from axion import Axion
2client = Axion(api_key='axn_123')
3
4institutions = client.insiders.institutions('AAPL')
5print(institutions)

Response (first 2 of many)

[
  {
    "reportDate": "2025-09-30T00:00:00.000Z",
    "organization": "Vanguard Group Inc",
    "pctHeld": 0.0947,
    "position": 1399427162,
    "value": 380910082641,
    "pctChange": -0.0117
  },
  {
    "reportDate": "2025-09-30T00:00:00.000Z",
    "organization": "Blackrock Inc.",
    "pctHeld": 0.0776,
    "position": 1146332274,
    "value": 312020184458,
    "pctChange": -0.0022
  }
]
GET/insiders/:ticker/ownership

Returns aggregated ownership percentages for insiders and institutions, as well as the total number of institutional holders. This is a high-level summary of who owns the company.

Path Parameters

ParameterTypeRequiredDescription
tickerstringRequiredStock ticker symbol

Examples:

https://api.axionquant.com/insiders/AAPL/ownership
https://api.axionquant.com/insiders/MSFT/ownership

Key Response Fields

insidersPercentHeld

Percentage of shares held by company insiders

institutionsPercentHeld

Percentage of shares held by institutions (13F filers)

institutionsFloatPercentHeld

Percentage of the public float held by institutions

institutionsCount

Total number of institutional holders

|

Major Holders Breakdown (Apple)

Request

Sample code
1from axion import Axion
2client = Axion(api_key='axn_123')
3
4ownership = client.insiders.ownership('AAPL')
5print(ownership)

Response

{
  "insidersPercentHeld": 0.016970001,
  "institutionsPercentHeld": 0.64405996,
  "institutionsFloatPercentHeld": 0.65518,
  "institutionsCount": 7072
}
GET/insiders/:ticker/transactions

Returns a detailed list of recent insider transactions (Forms 4 and 5). Each entry includes the insider name, relationship, transaction date, shares traded, price, and type of transaction (purchase, sale, gift, etc.).

Path Parameters

ParameterTypeRequiredDescription
tickerstringRequiredStock ticker symbol

Examples:

https://api.axionquant.com/insiders/AAPL/transactions
https://api.axionquant.com/insiders/AAPL/transactions?limit=50

Key Response Fields

shares

Number of shares involved in the transaction

value

Total transaction value (shares × price)

transactionText

Human-readable description of the transaction

filerName

Name of the insider

filerRelation

Title or relationship of the filer

startDate

Transaction date

ownership

Direct (D) or indirect (I) ownership

|

Insider Transactions (Apple)

Request

Sample code
1from axion import Axion
2client = Axion(api_key='axn_123')
3
4transactions = client.insiders.transactions('AAPL')
5print(transactions)

Response

[
  {
    "shares": 3750,
    "value": 0,
    "filerUrl": "",
    "transactionText": "Stock Gift at price 0.00 per share.",
    "filerName": "ADAMS KATHERINE L",
    "filerRelation": "General Counsel",
    "moneyText": "",
    "startDate": "2025-11-12T00:00:00.000Z",
    "ownership": "D"
  },
  {
    "shares": 3752,
    "value": 1017655,
    "filerUrl": "",
    "transactionText": "Sale at price 271.23 per share.",
    "filerName": "KONDO CHRISTOPHER",
    "filerRelation": "Officer",
    "moneyText": "",
    "startDate": "2025-11-07T00:00:00.000Z",
    "ownership": "D"
  }
]