ALNY: Symmetrical Triangle detected on 1 Oct 2026

ALNY has formed a symmetrical triangle pattern with strong structure (15/15), measuring from support at $243.19 to resistance at $243.91. Current price of $246.74 sits above both levels, positioning the stock in apex compression. The pattern generates moderate breakout (8/13) and weak volume confirmation (7/12), with overall score of 65/98 reflecting a medium-quality setup. Win probability registers at 56.81%, just above coin-flip odds. RSI of 48.78 indicates neutral positioning with room to move in either direction.

Q1 2026 net product revenues reached $1,036 million (121% growth YoY), driven by TTR revenues of $910 million (153% growth YoY). Q2 2026 achieved $1,172 million in revenues (74% growth YoY), though the company revised full-year TTR guidance from $4,400-$4,700 million to $4,200-$4,500 million. New ESC 2026 data from late August highlighted RNA interference treatments for transthyretin amyloidosis and hypertension. Recent 7-day return hit 12.24% and 30-day return 21.40%, yet YTD remains down 33.50%. The revised guidance and mixed price action suggest investor hesitation despite strong revenue growth, creating technical consolidation.

A successful breakout above $243.91 resistance would target $259.18 conservatively, representing 5.0% upside from current price—modest but consistent with symmetrical triangle measured moves. Volume confirmation remains critical; current volume of 1,028,112 trails the 20-day average of 1,460,166 by 30%, suggesting weak participation. Invalidation occurs at support $243.19; a breakdown below that level negates the setup. Win probability of 56.81% implies the pattern has slight edge but lacks conviction.

The Q2 revenue guidance revision downward signals management concern regarding TTR momentum despite record quarterly revenues. Volume weakness (relative volume 0.7) indicates low institutional conviction into this pattern—breakouts on light volume frequently fail. Stock sits 50.21% below 52-week highs, raising mean-reversion risks if sellers emerge on any bounce. Negative beta of -0.34 creates inverse correlation to market rallies, potentially acting as a drag if the broader sector faces headwinds. Three-month performance down 18.21% reflects profit-taking despite strong fundamentals.

We scan more than 6,000 NYSE and NASDAQ stocks every trading day and compare each detected pattern against a database of 370,000+ historical detections. Every setup is scored across three dimensions: Structure, Volume, and Breakout Readiness. Win probability is a calibrated estimate of how similar historical setups performed over the following 10 trading days. This is a swing trading tool built for multi-day holds. It is not built or tested for day trading.