Perpetual
Long-term Treasury 2x bear ETF perpetualTBTUSDT
TBTUSDT is a perpetual futures contract that tracks a fund: Long-term Treasury 2x bear ETF, priced in USDT around the clock. One composite bid, ask and mark from several independent markets. Delayed 15 minutes here, real time on the API.
TBTUSDT price chart
Historical bars for TBTUSDT are not on the delayed view yet. The API serves its live quote now.
- Previous close
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- Day range
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- 52-week range
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- Volume
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- Avg volume (30d)
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Integration
TBTUSDT in your app, in real time
The page above is the delayed view. These are the calls that return TBTUSDT live: one snapshot for the headline numbers, one aggregate call for the chart, one WebSocket subscription for every tick after that. Same symbol, same field names, on every asset class.
curl "https://api.tickerlayer.com/perpetuals/snapshot/TBTUSDT" \
-H "x-api-key: YOUR_API_KEY"curl "https://api.tickerlayer.com/perpetuals/agg/TBTUSDT/1/day/2025-09-17/2026-09-17" \
-H "x-api-key: YOUR_API_KEY"{
"action": "subscribe",
"channels": ["perpetuals.quotes", "perpetuals.marks"],
"symbols": ["TBTUSDT"]
}{
"symbol": "TBTUSDT",
"last_price": null,
"prev_close": null,
"change": null,
"change_percent": null,
"last_timestamp": null
}More perpetuals
Other perpetuals on the same key
Frequently asked questions
Is the TBTUSDT price on this page real-time?
No. The price, the ranges, and the chart are delayed by at least 15 minutes and refresh periodically. Real-time TBTUSDT quotes, mark prices and trades are delivered through the REST endpoints and the WebSocket channels on an API key with the Perpetuals plan.
What is TBTUSDT?
TBTUSDT is a perpetual futures contract that tracks a fund: Long-term Treasury 2x bear ETF. A perpetual has no expiry and trades 24 hours a day, 7 days a week, so it keeps printing a price when the underlying market is closed. It is a derivative: it is not the underlying itself, carries no ownership or shareholder rights, and its price can differ from the underlying, most of all outside the underlying's own trading hours.
Where does the TBTUSDT data come from?
TickerLayer consolidates top-of-book quotes and mark prices from several independent perpetual futures markets into one composite per contract: the median of the live bids and the median of the live asks, with source_count on every message. It is a calculated reference, not an executable quote, and it is not the price of the underlying on its primary market. TickerLayer is a data provider: it does not list, offer or trade this contract.
How do I get TBTUSDT market data through the API?
Call GET /perpetuals/snapshot/TBTUSDT for bid, ask, mark price, previous close and change in one response, GET /perpetuals/quote/TBTUSDT and GET /perpetuals/mark/TBTUSDT for each on its own, and GET /perpetuals/agg/TBTUSDT/1/day/{from}/{to} for OHLCV bars. Subscribe to perpetuals.quotes, perpetuals.marks or perpetuals.trades on the WebSocket to stream updates as they happen.
Which bar intervals are available for TBTUSDT?
One, five, and fifteen minute bars, one and four hour bars, and daily bars, each with a documented maximum window per request. Bars are built from traded prices on the contract's primary market source, and history starts when the contract was first listed, which for many perpetuals is recent.
Which plan includes TBTUSDT?
Symbol discovery is open to every API key. Prices need the Perpetuals plan: Individual covers REST, Business adds WebSocket streaming and commercial use. Redistributing the raw feed or displaying it as a standalone data product needs a separate agreement.
Delayed, derived, indicative data for informational and integration purposes. Not official venue data, not investment advice, and not a system of record. Perpetual futures are leveraged derivatives, not the underlying asset: no ownership, dividend or shareholder rights attach to a contract, and its price can move away from the underlying, most of all while the underlying market is closed. TickerLayer publishes calculated composite data only. It does not list, offer, broker or clear any contract, and it is not affiliated with, sponsored or endorsed by any issuer, index provider, fund manager, company or trading venue named or referenced in the data. See the market data disclaimer.