solve repeated call for get_object

GET /portfolio/215/insights/
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

[
    {
        "day": "2021-01-12",
        "trades": 6,
        "pl_value_fees": 80.0
    },
    {
        "day": "2021-01-15",
        "trades": 2,
        "pl_value_fees": -0.0
    },
    {
        "day": "2021-02-23",
        "trades": 4,
        "pl_value_fees": 485.0
    },
    {
        "day": "2021-02-25",
        "trades": 9,
        "pl_value_fees": 224.0
    },
    {
        "day": "2022-01-09",
        "trades": 2,
        "pl_value_fees": 83.0
    }
]