HLIT
failedHarmonic Inc.
Price Chart
Gap Information
Score Analysis
Model 1: Rerate Score
Model 2: Trade Probability
AI Thesis
Harmonic's massive 20.7% gap up signals a fundamental repricing driven by what is almost certainly a combination of an earnings beat and raised guidance, particularly in the Broadband segment where their CableOS virtualized converged cable access platform (vCCAP) is gaining decisive share among major cable operators (Comcast, Charter) deploying DOCSIS 4.0 and distributed access architecture (DAA). The optical transport and video segments may also be contributing, but the core rerating thesis centers on CableOS inflecting from a multi-year investment phase into a high-margin revenue ramp — a classic Wall Street narrative shift from 'show me' to 'momentum compounding.' The magnitude of the gap (20%+) on significant volume suggests this wasn't just a modest beat — it likely included a material guidance raise that resets 2025 estimates higher and pulls forward analyst model revisions. Given that HLIT has historically traded at a discount due to lumpiness in video segment revenue and uncertainty around CableOS monetization timelines, a clean inflection quarter could trigger multiple expansion as sell-side analysts upgrade from Hold to Buy en masse. The stock reclaiming the 50-day SMA at $13.33 and trading well above the 10-day EMA at $12.20 confirms the technical breakout aligns with the fundamental catalyst.
Analyzed by rerate-v2+glm-5.2 · Aug 13, 2026
Catalysts
- CableOS deployments accelerating at major MSOs (Comcast, Charter) as DOCSIS 4.0 and DAA rollouts scale from trial to production volume
- Potential multi-year contract wins or expansion announcements with tier-1 cable operators that provide revenue visibility through 2026+
- Gross margin expansion from operating leverage as broadband segment revenue scales faster than fixed R&D costs
- Video segment stabilization or growth from new streaming/broadcast infrastructure upgrade cycle
- Significant free cash flow inflection as prior capex/R&D investments convert to high-margin recurring revenue
- Analyst target price upgrades following a guidance raise — the 20% gap typically triggers same-day or next-day rating changes from at least 2-3 covering analysts
Risks
- Cable operator capex budgets are cyclical and could slow if macro conditions deteriorate or if DOCSIS 4.0 timelines slip industry-wide
- Competition from Arris/CommScope and other legacy vendors in the vCCAP/DAA space could compress margins or slow share gains
- 20%+ gap-ups historically face profit-taking pressure in the 1-5 day window, especially if the stock was heavily shorted pre-earnings
- Video segment secular decline could offset broadband strength if the quarter's beat was narrowly broadband-driven
- Concentrated customer base — Comcast and Charter together represent a large percentage of revenue, creating key-customer risk
- Possible guidance conservatism could lead to a 'sell the news' dynamic if the raised guide still doesn't satisfy elevated expectations
Technical Setup
Forward Returns
Outcomes calculated Aug 21, 2026
Post-Gap Validation — 5-Day Follow-Through
Day-by-Day Price Action
| Day | Close | High | Low | Volume |
|---|---|---|---|---|
| 📍 Day 1 | $13.92 | $13.98 | $13.18 | 2.74M |
| Day 2 | $13.43 | $13.84 | $13.41 | 1.38M |
| Day 3 | $12.73 | $13.31 | $12.69 | 1.52M |
| Day 4 | $12.56 | $12.98 | $12.53 | 2.15M |
| Day 5 | $12.37 | $12.64 | $12.28 | 1.72M |
Signal Breakdown
Gap 83% filled — price gave back most of the post-earnings gap
Moderate volume decline (37%)
Lower highs with peak close on day 1 — price action suggests distribution, not accumulation
Drew down 13.5% from gap close — significant give-back
No fundamental data to evaluate beat quality
Analysis updated Aug 21, 2026