Strategy 昨日最大空头？建仓当天就悬了

Today, I saw in the options unusual activity data that $Strategy(MSTR.US) had the "largest short position of the day at $5.5M". My first reaction was that someone was heavily shorting Saylor, but upon closer look, it turned out someone was naked selling Puts to collect premium, which the reporting methodology counted as a "short" position.

Let me break down this trade: At 13:39, someone bought $131 Puts for $4.88M, and at 13:40, they immediately sold $133 Puts for $5.76M. It was just a minute apart, a classic paired trade.

This is a textbook Bull Put Spread—selling higher strike Puts to collect premium and buying lower strike Puts to cap the downside risk, netting $0.88M in premium, betting that MSTR won't fall below $133.

The data singled out the $4.88M Put purchase leg as a "short" position, but it's actually just the insurance leg of this premium-collecting structure. So the "$5.5M short" is a reporting misunderstanding; the real intent is neutral to slightly bullish, lying back and collecting rent.

But the more I look at it, the riskier this trade seems. Yesterday coincided with Saylor's rare coin sale—this hardcore long who's been shouting "never sell Bitcoin" for years suddenly reduced holdings. Bitcoin fell below $70,000 that day, a two-month low, and MSTR dropped −9.1% in a single day—this means the person selling the $133 Put was betting it wouldn't break $133, but just hours after opening the position, the stock price plunged to $136, leaving only $3 above the defense line.

Let's do the math to feel it: the best outcome for this trade is MSTR holding above $133, pocketing the full $0.88M premium at expiration. But once it falls below $131, the maximum loss on the spread leg could reach $0.67M, not to mention the extra 481 naked Puts sold at $133—if a black swan truly hits, the losses could amplify. The current price of $136 is just barely above the defense line, making this premium collection a precarious situation now.

At this timing, with the black swan just landed and Bitcoin still finding its bottom, the $133 line is too fragile. If we must do something, I think we need to let this decline play out: wait for Bitcoin to truly find support and stabilize at some level, then sell lower-strike Puts, like around $110, paired with a $100 protective Put leg, using a deeper safety cushion to collect premium, rather than defending a line that could break anytime. The maximum loss must be strictly locked within the $10 spread between $110/$100 minus the premium collected. The stop-loss trigger is straightforward—if Bitcoin loses $65,000, close the position immediately and admit the mistake, don't fight it.