US Stocks | Knowledge Session | September 28
What Is the Options Expiration Delivery Day (OPEX), and Why Does BTC Often Go Crazy on Delivery Days?
First, quick briefing: In US stocks, there are three major important monthly options expiration dates every month:
— The third Friday of each month: Monthly options (the most heavyweight)
— The last Friday of each month: Monthly OPEX
— Every Wednesday/Friday: Weekly options (a lower tier)
Why BTC is affected too
Because Wall Street already treats BTC as a macro asset for trading. Market makers and institutions use large amounts of options for hedging. So during these days when US stock options expire, BTC prices often show “magical” price action.
Why it turns “magical”
Market makers hold large delta-hedging positions. On expiration days, they must close and adjust. Concentrated closing triggers the Gamma effect: the more it rises, the more they chase buys; the more it falls, the more they chase sells. Small normal fluctuations can become amplified versions into expiration day.
Evidence this week
This coming Friday, October 3rd, is the monthly OPEX. Current BTC is $83,200, ranging around the 5-day moving average. Sideways price action is easiest to get squeezed before expiration—market makers push price toward the maximum pain point (where option buyers lose the most).
Current market signals
— Nasdaq 27,068, +0.48% (tech is strong)
— SOXX 572.68, 5-day +2.4% (strong)
— VIX 14.87, -5.11% (sentiment steady)
— IBIT 47.57, 5-day -2.9% (signs of ETF outflows)
— MSTR 5-day -5.9% (tracking BTC lower)
— MARA / RIOT 5-day -4.9% to -5.5% (miners are weaker)
Crypto trading suggestions
1. Before this Friday’s OPEX, BTC will most likely range between 80,000 and 85,000, with a 55% probability leaning bullish (low VIX + strong Nasdaq).
2. Don’t load up and bet on a breakout right before OPEX—fake breakouts can slap you in the face.
3. If BTC holds above 85,000 and IBIT net inflows turn positive, go long; if BTC breaks below 80,000 and IBIT outflows persist, reduce positions in the short term.
4. Options players should focus on: BTC’s biggest “pain point” this week is in the 82,000–83,000 range—this area is prone to a needle-like rebound.
One sentence: Options expiration days are when large funds follow the rules. Regular players should follow the trend—don’t go head-to-head with market makers.
What Is the Options Expiration Delivery Day (OPEX), and Why Does BTC Often Go Crazy on Delivery Days?
First, quick briefing: In US stocks, there are three major important monthly options expiration dates every month:
— The third Friday of each month: Monthly options (the most heavyweight)
— The last Friday of each month: Monthly OPEX
— Every Wednesday/Friday: Weekly options (a lower tier)
Why BTC is affected too
Because Wall Street already treats BTC as a macro asset for trading. Market makers and institutions use large amounts of options for hedging. So during these days when US stock options expire, BTC prices often show “magical” price action.
Why it turns “magical”
Market makers hold large delta-hedging positions. On expiration days, they must close and adjust. Concentrated closing triggers the Gamma effect: the more it rises, the more they chase buys; the more it falls, the more they chase sells. Small normal fluctuations can become amplified versions into expiration day.
Evidence this week
This coming Friday, October 3rd, is the monthly OPEX. Current BTC is $83,200, ranging around the 5-day moving average. Sideways price action is easiest to get squeezed before expiration—market makers push price toward the maximum pain point (where option buyers lose the most).
Current market signals
— Nasdaq 27,068, +0.48% (tech is strong)
— SOXX 572.68, 5-day +2.4% (strong)
— VIX 14.87, -5.11% (sentiment steady)
— IBIT 47.57, 5-day -2.9% (signs of ETF outflows)
— MSTR 5-day -5.9% (tracking BTC lower)
— MARA / RIOT 5-day -4.9% to -5.5% (miners are weaker)
Crypto trading suggestions
1. Before this Friday’s OPEX, BTC will most likely range between 80,000 and 85,000, with a 55% probability leaning bullish (low VIX + strong Nasdaq).
2. Don’t load up and bet on a breakout right before OPEX—fake breakouts can slap you in the face.
3. If BTC holds above 85,000 and IBIT net inflows turn positive, go long; if BTC breaks below 80,000 and IBIT outflows persist, reduce positions in the short term.
4. Options players should focus on: BTC’s biggest “pain point” this week is in the 82,000–83,000 range—this area is prone to a needle-like rebound.
One sentence: Options expiration days are when large funds follow the rules. Regular players should follow the trend—don’t go head-to-head with market makers.