What is ALNY's dilution risk score?

ALNY has a latest available DilutionScore record of 10/100, categorized as low dilution risk by the DilutionWatch scoring model. DilutionWatch displays SEC filing and dilution indicators for ALNY, including shelf registrations, ATM offerings, warrant exercises, PIPE deals, and reverse split signals when detected in source data.

What SEC filings does DilutionWatch track for ALNY?

DilutionWatch tracks 25 SEC filing types for ALNY including S-3 shelf registrations, 424B prospectuses (ATM offerings), S-1 registration statements, 8-K material events, warrant exercise notices, convertible note agreements, and Form 4 insider transactions. Alerts are delivered via email within minutes of a filing appearing on EDGAR.

How does stock dilution affect ALNY shareholders?

Stock dilution occurs when a company issues new shares, reducing the ownership percentage of existing shareholders. For ALNY, common dilution events include at-the-market (ATM) stock offerings, shelf registration drawdowns, warrant exercises, and convertible note conversions. Each event increases the share count and can pressure the stock price lower.

Is DilutionWatch free for ALNY tracking?

DilutionWatch provides a free tier that shows DilutionScores and basic filing history for ALNY. Premium plans ($19.95/month Basic, $39.95/month Premium) unlock real-time email alerts, the full Pulse™ feed, advanced dilution forecasts, and access to all 10,000+ tracked tickers.

ALNY Dilution Risk Score: 10/100 (LOW)

Score Breakdown

📋 Offering Ability

20

💰 Cash Runway

0

📊 Float Risk

2

⚠️ Warrant Exposure

15

🔄 Convertible Debt

15

Dilution Forecast

☀️

Clear

No significant dilution signals

model est. 0%

No significant dilution signals detected for ALNY.

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Market Data

Market Cap$40.32B

Shares Outstanding133.81M

Float132.95M

Cash$1.71B

Debt$677.72M

Short InterestN/A

Institutional Holdings

QoQ: ↑ 2.8% shares (2026Q1 vs prior)

796 institutional holders · 144.53M shares

#1 FMR LLC 14.58M shares

#2 VANGUARD CAPITAL MANAGEMENT LLC 11.89M shares

#3 Capital World Investors 10.80M shares

+ 17 more holders Sign up free to view →

Institutional holder totals are aggregated from ownership filings and may use a different share basis or reporting date than public float. They are not a reconciliation against tradeable float.

Short Interest

Short Interest4.80M

Days to Cover2.2

% of Float3.6%

FINRA data as of Jul 31, 2026

Insider Buy/Sell Ratio

Recent SEC Activity

xbrl XBRL CONVERTIBLE 2025-12-31

3 FORM3 2026-04-07

4 INSIDER TRANSACTION 2026-03-06

4 INSIDER TRANSACTION 2026-03-04

Full SEC filing analysis available with free account →

Recent News

No recent news

Factual ALNY Dilution Snapshot

Alnylam Pharmaceuticals, Inc. (ALNY) has a DilutionScore of 10/100, rated Low dilution risk. Score date: August 28, 2026.

Recent SEC activity tracked for ALNY: 3 on 2026-04-07; 4 on 2026-03-06; 4 on 2026-03-04.

This automatically generated snapshot is assembled from stored DilutionWatch data fields and may contain data-source errors or omissions. It is not financial advice, not investment research, and not a recommendation. Do your own research and review the full disclaimer and terms of service.