https://api.data.payoff.ch/v2/underlyings/US8454671095

{
    "isin": "US8454671095",
    "symbol": "SWN",
    "valor": "971860",
    "name": "Southwestern Energy Co",
    "assetClass": "Aktien",
    "tradingExchangeName": "NEW YORK STOCK EXCHANGE, INC.",
    "bid": null,
    "ask": null,
    "bidSize": null,
    "askSize": null,
    "last": null,
    "lastDateTime": null,
    "change": null,
    "ttsId": null
}