solve repeated call for get_object

GET /portfolio/16/insights/
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

[
    {
        "day": "2020-05-11",
        "trades": 1,
        "pl_value_fees": -61.0
    },
    {
        "day": "2020-05-12",
        "trades": 1,
        "pl_value_fees": -365.0
    },
    {
        "day": "2020-05-14",
        "trades": 1,
        "pl_value_fees": -24.0
    },
    {
        "day": "2020-05-19",
        "trades": 1,
        "pl_value_fees": -120.0
    },
    {
        "day": "2020-05-28",
        "trades": 2,
        "pl_value_fees": -318.0
    },
    {
        "day": "2020-06-04",
        "trades": 1,
        "pl_value_fees": -149.0
    },
    {
        "day": "2020-06-08",
        "trades": 1,
        "pl_value_fees": -72.0
    },
    {
        "day": "2020-06-09",
        "trades": 1,
        "pl_value_fees": -124.0
    },
    {
        "day": "2020-06-16",
        "trades": 1,
        "pl_value_fees": -200.0
    },
    {
        "day": "2020-06-18",
        "trades": 1,
        "pl_value_fees": 400.0
    },
    {
        "day": "2020-07-13",
        "trades": 2,
        "pl_value_fees": 24770.0
    }
]