US cash equities go dark for 8 hours every weeknight and 65 hours every weekend. Onchain perpetuals don't. This report measures how much price information onchain perps carry during the blackout, using 60 days of 5-minute data across single-name perps (NVDA, TSLA, MSTR, COIN, AAPL), tokenized ETFs (SPYx, GLDx, SLVx), and commodity perps (WTI, Brent, NatGas).The core questions this report answers:

• Do onchain perps predict the next cash open — and by how much?
• Where is the signal strongest: overnight or weekend?
• How did the March 2026 oil spike propagate onchain before CME reopened?

For trading desks, risk managers, and institutional allocators evaluating tokenized assets as price signals outside market hours. For informational purposes only. Not investment advice.

By Elton Shehdula, Research Lead @Allium

What's inside:

• Verdict: real signal. Single-name perps sit within 50 bps of the next pre-market open 6 hours ahead, 25 bps one hour out — 16 bps closer than holding yesterday's 20:00 ET post-market close.
• The weekend is where the edge is largest. Holding Friday's close misses Monday's open by 113 bps median. The Sunday afternoon onchain perp gets you to ~80 bps — a 25 bps structural edge that widens through Sunday night to 104 bps by the 04:00 ET reopen.
• Live basis during US hours. Equity perps track ±5–13 bps from cash. Gold/silver ±10 bps. WTI/Brent ±15–25 bps.
• Event case study: March 2026 oil spike. Brent absorbed 54% of a $16.58 weekend gap onchain before CME reopened. WTI absorbed ~30%.
• Risk framework. Where to use onchain as a risk mark, where mid-closure drift limits its value, and how funding rates affect the practical view.