What the institutional money is doing on ATTO right now — dark pool, options positioning, and where the news and the money disagree. Free.
News is generic and sentiment-neutral; money signals show institutional distribution and elevated short positioning off-exchange, suggesting insiders may be buying into weakness rather than conviction.
Bullish insider and major-shareholder buying at $21 contrasts sharply with dark-pool data showing 61% short volume (20.7 points above the stock's own norm) and distribution regime—insiders accumulating while institutions hedge or trim positions.
Director purchase at $21 aligns with bullish intent, but off-exchange short volume remains elevated and dark-pool regime is distribution—a divergence between insider conviction and institutional positioning.
Venbio's accumulation reinforces insider buying narrative, yet dark-pool short positioning (61% vs. 41% norm) and distribution regime indicate simultaneous institutional hedging or exit activity—mixed conviction.
Redmile's purchase joins a wave of insider and shareholder buying, yet off-exchange data reveals 61% short volume (20.7 points above norm) and distribution positioning—insiders buying while institutions appear to be hedging or exiting.
A divergence is when the news narrative and the institutional money flow point in opposite directions — a bearish headline while large call premium is bought, or heavy dark-pool selling under a bullish story. It signals the crowd and the desks may disagree.
Dark-pool volume — The share of trading executed off-exchange, at wholesalers and dark pools. About half of all US share volume prints there on an ordinary day, so the level by itself says almost nothing. What carries information is the distance from this name’s own recent norm, and whether the off-exchange size ran above its usual.
Off-exchange short share — How much of that off-exchange volume was sold short. The median across all listed names is about 49%, because wholesalers filling retail buy orders sell short and cover later. A reading near half is plumbing, not a bearish vote — compare it to the same name’s own 20-day norm.
Max pain — The price where the most options expire worthless — positioning often gravitates toward it near expiry.
Call wall / Put floor — Strikes with the heaviest call/put open interest — they often act as short-term resistance and support.
Put/Call ratio — Below ~0.7 leans bullish (more calls); above ~1 leans defensive (more puts).
