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© 2026 DataHeimdall. All rights reserved.Data sourced from SEC EDGAR public filings.
Insider Trades

ALNY

ALNYLAM PHARMACEUTICALS, INC.

Superinvestors

Institutional investors holding ALNY

Consensus →
InvestorFundWeightSharesValueQuarter
Dodge & CoxDodge & Cox0.35%1,929,253$638.3M2026Q1
Viking Global InvestorsViking Global Investors0.10%232,000$3.1M2005Q4
First Eagle Investment ManagementFirst Eagle Investment Management0.01%26,500$2.9M2020Q1
Meridian / ArrowMarkMeridian Contrarian Fund0.00%1,534$223K2020Q3
Kenneth FisherFisher Asset Management0.00%6,045$2.0M2026Q1
Polen Capital ManagementPolen Capital Management0.00%693$316K2025Q3

Congressional Activity

Congressional data coming soon

Insider Activity

42

Total trades

$12.0M

Volume

19

Buys

20

Sells

Last trade: Jun 1, 2026

Insider Tradeslast 90 days

DateInsiderTypeValue
Jun 1, 2026David E I PyottBuy–
Jun 1, 2026David E I PyottSell$274K

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.

Jun 1, 2026
David E I Pyott
Sell
$351K
Jun 1, 2026David E I PyottSell$366K
Jun 1, 2026David E I PyottSell$149K
Jun 1, 2026David E I PyottSell$5K
Jun 1, 2026David E I PyottOption–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 20, 2026David E I PyottBuy–
May 13, 2026David E I PyottOption$790K