Fondo 13f Pago

{
  "cik": "0001067983",
  "fecha_informe": "2026-06-30",
  "fuente": "SEC EDGAR (formulario 13F-HR)",
  "gestora": "BERKSHIRE HATHAWAY INC",
  "nota": "Posiciones largas en valores de EE. UU. al cierre del trimestre; se publican hasta 45 días después. Not affiliated with the SEC.",
  "nuevas": [
    "D R HORTON INC"
  ],
  "otras_entidades_parecidas": null,
  "posiciones": 29,
  "presentado": "2026-08-14",
  "principales": [
    {
      "acciones": 227917808,
      "acciones_trimestre_anterior": 227917808,
      "cambio": "sin cambios",
      "clase": "COM",
      "cusip": "037833100",
      "emisor": "APPLE INC",
      "opcion": null,
      "peso_pct": 22.04,
      "valor_usd": 65950296923
    },
    {
      "acciones": 151610700,
      "acciones_trimestre_anterior": 151610700,
      "cambio": "sin cambios",
      "clase": "COM",
      "cusip": "025816109",
      "emisor": "AMERICAN EXPRESS CO",
      "opcion": null,
      "peso_pct": 17.14,
      "valor_usd": 51282319275
    }
  ],
  "valor_total_usd": 299253556246,
  "vendidas_del_todo": [
    {
      "acciones_antes": 632890,
      "cusip": "21036P108",
      "emisor": "CONSTELLATION BRANDS INC"
    }
  ]
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/fondo-13f-pago' \
  -H 'content-type: application/json' \
  --data-raw '{"gestora":"berkshire hathaway","limite":3}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://api.vextorium.com/fondo-13f-pago' \
  -H 'content-type: application/json' \
  --data-raw '{"gestora":"berkshire hathaway","limite":3}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Ffondo-13f-pago&method=POST
const res = await pay("https://api.vextorium.com/fondo-13f-pago", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "gestora": "berkshire hathaway",
    "limite": 3
  }),
});
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.vextorium.com/fondo-13f-pago",
        json={
            "gestora": "berkshire hathaway",
            "limite": 3,
        },
    )
    print(res.status_code, res.text)