solve repeated call for get_object

GET /portfolio/459/insights/
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

[
    {
        "day": "2022-05-13",
        "trades": 4,
        "pl_value_fees": 52.0
    },
    {
        "day": "2022-05-16",
        "trades": 4,
        "pl_value_fees": -123.0
    }
]