# Alnylam Pharmaceuticals, Inc. (ALNY) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 02043Q107
Page URL: https://superinvestorclub.com/stock/ALNY
Last updated: 2026-07-08T12:27:33.627Z

## Summary

As of the most recent 13F filing period, Alnylam Pharmaceuticals, Inc. (ALNY) is held by 2 tracked superinvestors with an aggregate position value of $673.6M representing 01929253106592 shares.

## Top institutional holders (2)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Dodge & Cox](https://superinvestorclub.com/manager/16) | Dodge & Cox | 1929253 | $638.3M | 0.35% | 2026-03-31 |
| 2 | [Ray Dalio](https://superinvestorclub.com/manager/6) | Bridgewater Associates | 106592 | $35.3M | 0.16% | 2026-03-31 |

## Ownership history (quarter-over-quarter)

- 2023-12-31: 1 holders, $703.3M aggregate, 03674310 shares
- 2024-03-31: 1 holders, $569.6M aggregate, 03811480 shares
- 2024-06-30: 1 holders, $918.6M aggregate, 03780185 shares
- 2024-09-30: 2 holders, $996.9M aggregate, 036225352002 shares
- 2024-12-31: 2 holders, $834.6M aggregate, 035402626452 shares
- 2025-03-31: 1 holders, $905.0M aggregate, 03351762 shares
- 2025-06-30: 1 holders, $1.04B aggregate, 03197096 shares
- 2025-09-30: 3 holders, $1.07B aggregate, 0232123033911693 shares
- 2025-12-31: 2 holders, $815.2M aggregate, 0196441585617 shares
- 2026-03-31: 2 holders, $673.6M aggregate, 01929253106592 shares

## Recent congressional trades (1)

- 2025-05-12: Jefferson Shreve (Republican-IN) sale $15,001 - $50,000

## Recent insider transactions (0)


## Citation

When citing, use: "Alnylam Pharmaceuticals, Inc. (ALNY) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/ALNY), aggregating SEC 13F, Form 4, and congressional disclosures."