How StockGlow Works

Every article is classified, scored, and ranked — so the most impactful market catalysts surface instantly, not buried in noise.

How Articles Are Processed

1. Ingest Articles

We pull financial news from Polygon.io — the same institutional-grade data feed used by hedge funds and trading desks. Articles are deduplicated and normalized in real time.

2. Classify Catalysts

Each article runs through multi-label keyword classification. Weighted keywords are matched against the title and description, and articles can belong to multiple categories simultaneously.

3. Score Importance

Every article receives a 0–100 importance score computed from four factors: source tier, catalyst weight, AI sentiment analysis, and recency. High-scoring articles surface first.

Catalyst Categories

Articles are classified into one or more categories using weighted keyword matching. Each category has a threshold — only strong matches qualify.

FDA

FDA regulatory action — approval, rejection, PDUFA date, or breakthrough designation

fda approvedfda approvalpdufa

Clinical

Clinical trial results — phase data, endpoint outcomes, or trial milestones

phase 3phase iiipivotal trial

Earnings

Earnings report — beat/miss, revenue, EPS, or guidance changes

beats estimatesbeat estimatesmisses estimates

M&A

Merger or acquisition — buyout, takeover, or merger agreement

to acquireacquired bymerger agreement

Partnership

Strategic partnership — collaboration, joint venture, or licensing deal

collaboration agreementstrategic partnershipjoint venture

Patent

Patent activity — grant, infringement, or IP dispute

patent grantedpatent approvedpatent infringement

Analyst

Analyst action — upgrade, downgrade, or price target change

upgrades todowngrades toprice target

Regulatory

Government or regulatory action — SEC, DOJ, FTC, or compliance issue

sec investigationdoj investigationftc blocks

Lawsuit

Class action or securities fraud lawsuit filed against the company

securities class actionclass action lawsuitclass action suit

Insider

Insider trading activity — executive buying or selling shares

insider buyinginsider sellingceo buys

Product

Product launch or unveiling — new product, feature, or service announcement

product launchnew productunveiled

Importance Scoring

Every article is scored from 0 to 100 based on four components. Articles scoring 60+ are flagged as major catalysts and highlighted in the screener.

Source Tier

0–25 pts

Higher-tier sources score more. Bloomberg, Reuters, and WSJ are Tier 1. Wire services (Business Wire, PR Newswire) are Tier 2. CNBC and Benzinga are Tier 3. Yahoo Finance and Zacks are Tier 4. SeekingAlpha and Motley Fool are Tier 5.

Catalyst Weight

0–25 pts

The type of catalyst determines its weight. FDA approvals and M&A announcements score highest. Clinical trial results and earnings surprises follow. Product launches score lowest.

Sentiment

0–20 pts

Polygon's AI analyzes each article for sentiment. Strong positive or negative sentiment scores 20 points — decisive signals matter most. Neutral sentiment scores 8 points.

Recency

0–20 pts

Fresher news scores higher. Articles less than 1 hour old get 20 points. Under 4 hours: 15 points. Under 12 hours: 8 points. Under 24 hours: 4 points. Older articles get 0.

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