Overview
Trading in MongoDB options this week has been intense but not uniformly bearish. Of 61,336 contracts traded as of 2:10 PM New York time, puts accounted for 31,460 contracts, or 51.3%, against 29,876 calls, or 48.7%. The put/call volume ratio was 1.05. Meanwhile, implied three-month volatility slid 14.01 percentage points to 55.69% as of 2:16 PM EDT on Wednesday, Sept. 2, 2026, when the stock was changing hands at $380.29, down 12.42%.
First read of the tape
The headline takeaway is not an all-out rush for downside insurance. The market shows unusually heavy activity on both sides of the book. That dual intensity is reflected in the near-term strikes where the clearest signals have emerged.
Near-term expirations - the Sept. 4 picture
- The $370 put posted 1,396 contracts traded against 254 open interest as of Sept. 1 - volume that is more than five times the prior open interest, which points to substantial new opening activity.
- The $390 call traded 1,378 contracts while open interest stood at only 19, a similarly strong indication of fresh positions.
- The $400 call saw 871 contracts trade against 848 open interest; this activity is less conclusive because it may reflect trades tied to existing positions.
- The $350 put recorded 738 contracts versus 1,246 open interest, a pattern that could signal closing or rolling rather than pure new downside speculation.
With the share price at $380.29, the $370 put and $390 call bracket the stock into a near-term battleground for the Sept. 4 expiration. The options market appears concentrated on that $370 - $390 window, with significant expression of views on both the upside and downside.
Longer-dated structure - the $150 calendar print
A separate large print involved a 2,288-contract $150 put calendar spread. That block consisted of 1,158 Jan. 15, 2027 $150 puts versus 656 open interest, and 1,130 Dec. 18, 2026 $150 puts versus 344 open interest. Because the package was reported without a buy-or-sell designation, its directional intent cannot be determined with certainty from the tape.
Given that the $150 strike sits nearly 61% below the current stock level, the position is best interpreted as a tail-risk or structured trade rather than a straightforward forecast of a move to $150. A calendar spreading a long-dated put against a nearer-dated put can reflect views on the relative time value or anticipated volatility term structure as much as it can reflect a pure price target.
Volatility dynamics and skew
Notably, implied volatility dropped even as the share price fell. That pattern is typical when an event that sparked uncertainty has passed: event-driven premium unwinds and overall IV compresses. At the same time, skew - the relative cost of downside versus upside exposure - rose modestly to 1.32 percentage points, up 0.90 points. That move makes downside protection somewhat more expensive than calls, which is consistent with hedging demand, though it is not indicative of a market panic.
Putting the signal together
The combined message from the tape is mixed but coherent. In the near term, positioning is concentrated in a two-sided fight around $370 - $400. The slightly put-heavy overall volume profile points to a mildly defensive stance across participants rather than unanimous bearish sentiment. Reduced implied volatility indicates that a prior event premium has collapsed despite the price drop. Meanwhile, the long-dated $150 calendar spread introduces evidence of tail-risk structuring, though its exact directional purpose is ambiguous.
Conclusion
The clearest practical conclusion is that market participants are bracing for continued turbulence and are actively expressing both downside and upside convictions. The $370 put volume is the most tangible signal of immediate downside concern, while activity in the $390 and $400 calls demonstrates that upside scenarios remain actively contested.
Data points cited above reflect options volume and open interest as reported around 2:10 PM New York time and price and implied volatility as of 2:16 PM EDT on Wednesday, Sept. 2, 2026.