solve repeated call for get_object

GET /portfolio/201/insights/
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

[
    {
        "day": "2021-06-05",
        "trades": 1,
        "pl_value_fees": -1.0
    },
    {
        "day": "2021-06-08",
        "trades": 1,
        "pl_value_fees": 1.0
    },
    {
        "day": "2021-06-21",
        "trades": 1,
        "pl_value_fees": -1.0
    },
    {
        "day": "2021-06-25",
        "trades": 1,
        "pl_value_fees": -4.0
    },
    {
        "day": "2021-06-26",
        "trades": 1,
        "pl_value_fees": -3.0
    },
    {
        "day": "2021-07-08",
        "trades": 2,
        "pl_value_fees": -7.0
    },
    {
        "day": "2021-07-24",
        "trades": 1,
        "pl_value_fees": 4.0
    },
    {
        "day": "2021-07-25",
        "trades": 1,
        "pl_value_fees": 7.0
    },
    {
        "day": "2021-07-28",
        "trades": 2,
        "pl_value_fees": -1.0
    },
    {
        "day": "2021-08-01",
        "trades": 1,
        "pl_value_fees": -1.0
    },
    {
        "day": "2021-09-20",
        "trades": 3,
        "pl_value_fees": -9.0
    }
]