solve repeated call for get_object

GET /portfolio/6400/insights/
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

[
    {
        "day": "2023-10-23",
        "trades": 2,
        "pl_value_fees": -1963.0
    },
    {
        "day": "2023-11-23",
        "trades": 1,
        "pl_value_fees": -389.0
    },
    {
        "day": "2023-12-07",
        "trades": 2,
        "pl_value_fees": 865.0
    },
    {
        "day": "2023-12-14",
        "trades": 4,
        "pl_value_fees": 12045.0
    }
]