May 2026 TradFi Perpetuals Index Price Rollover Schedule
Starting 7 May 2026 at 21:30 UTC, BitMEX will update the underlying index price of WTIUSDT, BRENTUSDT and NATGASUSDT.
As the front month commodity futures contracts approach their expiry dates and liquidity migrates to the next calendar month, BitMEX will transition each index gradually over 5 business days to minimise price disruption.
Rollover Schedule
WTIUSDT ( .BWTIT) – Rolling from WTIM6 to WTIN6
Date & Time (UTC) | Front Month ( WTIM6, expires on 19 May 2026) | Next Month ( WTIN6, expires on 22 June 2026) |
7 May 2026 21:30 | 80% | 20% |
8 May 2026 21:30 | 60% | 40% |
11 May 2026 21:30 | 40% | 60% |
12 May 2026 21:30 | 20% | 80% |
13 May 2026 21:30 | 0% | 100% |
BRENTUSDT ( .BBRENTT) – Rolling from BRENTN6 to BRENTQ6
Date & Time (UTC) | Front Month ( BRENTN6, expires on 29 May 2026) | Next Month ( BRENTQ6, expires on 30 June 2026) |
7 May 2026 21:30 | 80% | 20% |
8 May 2026 21:30 | 60% | 40% |
11 May 2026 21:30 | 40% | 60% |
12 May 2026 21:30 | 20% | 80% |
13 May 2026 21:30 | 0% | 100% |
NATGASUSDT ( .BNATGAST) – Rolling from NATGASM6 to NATGASN6
Date & Time (UTC) | Front Month ( NGDM6, expires on 27 May 2026) | Next Month ( NGDN6, expires on 26 June 2026) |
7 May 2026 21:30 | 80% | 20% |
8 May 2026 21:30 | 60% | 40% |
11 May 2026 21:30 | 40% | 60% |
12 May 2026 21:30 | 20% | 80% |
13 May 2026 21:30 | 0% | 100% |
The weights above will apply to the traditional futures component of the respective index price.
Please note that our standard index price elimination rules will remain in effect throughout the rollover window. As a result, the effective weighting of each constituent in the final index calculation may differ slightly from the scheduled weights, if one or more sources are eliminated under the elimination rules.
To better understand BitMEX indices, check out our BitMEX Index Methodology page.
