Bitcoin faces $16B options expiry Friday, plus two macro tests

Deribit $16B options expiry looms

Bitcoin options with roughly $16 billion in notional value expire on Deribit at 08:00 UTC Friday, Sept. 25. Calls account for about $9.6 billion (≈60 %) of the open interest, while puts sit at $6.4 billion. The spot price sits near $86,300, just above the $85,000 level that has become a focal point for dealer hedging.

Gamma dynamics and strike concentration

ByKaranteli’s open‑source gamma model maps possible hedging flows under a single assumption about dealer positioning. The model places the largest call wall at $95,000 and the largest put wall at $60,000, with a zero‑gamma level near $71,000. Above $71,000 dealers who are net long gamma tend to sell into rallies and buy dips, absorbing moves and pulling price toward heavily populated strikes. Below that level net short gamma forces dealers to buy as price climbs and sell as it falls, amplifying the direction of the move. At $86,000 Bitcoin sits comfortably inside the model’s stabilizing zone.

Upcoming macro catalysts

Two U.S. economic releases and the expiry of CME’s September Bitcoin futures follow within seven hours. Durable‑goods orders arrive at 12:30 UTC, the University of Michigan’s final consumer‑sentiment reading at 14:00 UTC, and CME Bitcoin futures settle at 15:00 UTC. These data points are rate‑sensitive and can interact with whatever hedging structure remains after Deribit’s settlement.

Implications for spot and ETFs

Ledn co‑founder Mauricio Di Bartolomeo described quarterly expirations as a two‑act event, noting that the previous week’s iShares Bitcoin Trust (IBIT) expiry was heavily call‑biased. He argued that demand for IBIT shares pulls spot Bitcoin into the fund via authorized participants, a dynamic he expects to repeat on Deribit. Recent U.S. spot Bitcoin ETFs recorded inflows of $159.5 million on Sept. 17, $433 million on Sept. 18 and $999 million on Sept. 21, suggesting that any post‑expiry pressure could be met with fresh buying.

Source: CryptoSlate