Binance Excludes Blue Ocean Outage Window From US Stock Perp Funding

Binance excluded nearly three hours of premium index data from one funding settlement for its perpetual futures tied to United States equities after an overnight trading halt at Blue Ocean, the largest US alternative trading system focused on extended-hours stock trading. In a post on Binance Square at 07:21 UTC on Oct. 21, the exchange's official news account said it would drop the premium index for the affected window only from the 08:00 UTC funding rate calculation that day, for TradFi Perps referencing any US equity, Unchained reported on Oct. 21. The account tied the move to intermittent network connectivity issues affecting one of the largest US overnight alternative trading systems, which lasted from 03:46 to 06:30 UTC, that report said.

Binance did not name the venue. Blue Ocean's own service status page records that the company halted all trading at 23:46:41 ET on Oct. 20 after intermittent network connectivity issues at its external network provider affected client connectivity, then resumed trading at 2:30 a.m. ET on Oct. 21 once the issue was resolved. Those hours match the 03:46 to 06:30 UTC window Binance described.

The excluded period matters because perpetual futures funding is set partly on how far the contract trades from its reference price, a gap the premium index measures. When the feed for the underlying stock goes quiet, that gap can skew. Binance pointed to Bybit's SOXL perpetual, where funding moved from 0.0000 percent to minus 0.1299 percent during the period, Unchained reported. Binance applied the exclusion to the funding settlement only; the exchange did not say it changed any other calculation for the day.

"Traders shouldn't pay for an outage they didn't cause," Shunyet Jan, Binance's head of exchange and trading, said in comments shared with Unchained. He said the exchange "kept the distorted period out of funding, so what users pay follows the real market."

The Blue Ocean failure rippled into Asian brokerage operations the same day. The Seoul Economic Daily reported on Oct. 21 that the outage halted or delayed real-time daytime quotes for US stocks at many Korean brokerages, because a large number of them source their daytime quote data from Blue Ocean alone. Orders and executions through other ATS platforms continued to run, the paper said, but brokers warned clients that unfilled orders routed to Blue Ocean could be canceled and that investors should check their order records. Toss Securities and Meritz Securities, which had diversified their quote supply channels, kept quote services running; Toss has aggregated bids and offers from both Blue Ocean and Bruce since Sept. 30. The paper expected quote services to return to normal from the US pre-market session the same day.

Blue Ocean's status page shows the venue back to normal operations afterward. The company posted at 19:00 ET on Oct. 22 that participants were connecting and executing test trades, and at 20:00 ET that the market had opened for the displayed session and was operational.

The halt shows how a gap in traditional market plumbing can distort pricing for crypto derivatives that trade around the clock. An IMF study cited by Unchained found most tokenized stock trading happens outside US market hours. Binance's bStocks passed $1 billion in assets last week, and Ripple Prime opened 24/7 swaps on stocks, metals and currencies with Virtu already trading, the report noted.

Blue Ocean markets itself as an alternative to the New York-only trading day, with sessions sized for Asian and European hours, according to its website. The halt at 23:46 ET on Oct. 20 landed during the Korean daytime session that depends on its quotes.