Notable Tuesday Option Activity: MSTR, WGS, ABM

Options in GeneDx (WGS) and ABM Industries (ABM) are trading at elevated volumes today: WGS saw 6,219 contracts (~621,900 shares), roughly 139.7% of its one‑month ADTV, concentrated in 4,084 contracts of the Dec. 19, 2025 $135 put (~408,400 shares); ABM saw 6,455 contracts (~645,500 shares), about 131.6% of its one‑month ADTV, concentrated in 3,131 contracts of the Dec. 19, 2025 $40 put (~313,100 shares). The concentration in long‑dated put activity points to substantial bearish bets or institutional hedging in both names and may signal downside positioning or event-driven risk management ahead of the December 2025 expiries.

Analysis

WGS options traded 6,219 contracts today, equivalent to ~621,900 underlying shares and about 139.7% of WGS's one‑month ADTV of 445,235 shares, with 4,084 contracts concentrated in the Dec. 19, 2025 $135 put (~408,400 shares). ABM options saw 6,455 contracts (~645,500 shares), roughly 131.6% of its one‑month ADTV of 490,555 shares, driven by 3,131 contracts in the Dec. 19, 2025 $40 put (~313,100 shares).

The concentration in long‑dated puts at the same December 2025 expiry points to significant bearish bets or institutional hedging concentrated at specific strikes rather than dispersed short‑dated volatility trades. Because these put trades exceed 100% of each name's monthly ADTV, the flows are large relative to liquidity and could produce outsized price sensitivity if dealers delta‑hedge or positions are unwound.

Market metadata labels the overall tone mildly negative (sentiment score -0.3) with per‑ticker sentiment of -0.5 for WGS and -0.4 for ABM, which corroborates a bearish tilt but does not by itself prove directional intent. Investors should therefore watch open interest, implied volatility moves, and subsequent stock price reaction to distinguish event‑driven hedging from speculative shorting; the market impact score of 0.3 implies material but not systemic market consequences.

Key Decisions for Investors

• Review and size exposure to WGS and ABM and consider trimming long equity positions or adding protective puts given the large Dec. 19, 2025 put flows representing >100% of monthly ADTV
• Monitor option open interest, trade prints, and implied volatility over the coming sessions to determine whether activity reflects directional shorting or institutional hedging before initiating new long positions
• If seeking protection, prefer calibrated hedges (collars or limited‑cost puts) sized to liquidity constraints because the concentrated strikes and volumes could amplify price moves on dealer hedging or unwind