If Bitcoin finishes September in the green, history points to a strong fourth quarter — good news for Bitcoin holders.

• Green Septembers are rare for Bitcoin, happening only six times out of roughly eleven.
• When September does close green, Q4 has usually been very strong, with October doing most of the heavy lifting.
• In those years, the worst Q4 pullback was shallow — typically only a few percent from the quarter's open.
• A correction of around 5% at some point in Q4 is still likely, but not a deep drop.
• The best-case Q4 in past green-September years was a gain of over 60%, though that is a hope, not a base case.

Outlook: A green September close would set up expectations for a small dip early in Q4 followed by a move higher into year-end.