Entropy Technologies, LP ALNY — ALNYLAM PHARMACEUTICALS INC

Ownership history in Entropy Technologies, LP  ·  5 quarters on record

AI Ownership Summary

Entropy Technologies, LP reported ALNYLAM PHARMACEUTICALS INC (ALNY) in 5 quarterly 13F filings from 2024 Q2 through 2026 Q1. Peak portfolio weight reached 0.59% in 2025 Q3. The latest visible filing shows ALNY at 0.55% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings.

What this ALNY ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Entropy Technologies, LP's position in ALNYLAM PHARMACEUTICALS INC, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2026 Q1

ALNY was reported at 0.55% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.59% in 2025 Q3

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2024 Q2 to 2026 Q1

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

ALNY stock page Entropy Technologies, LP fund profile Entropy Technologies, LP full holdings
How Entropy Technologies, LP held ALNY — position size vs. price
% of Fund (quarterly)    ALNY price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 5 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 ADDED — — — 35,719 +19,622 +121.9% 0.55% $11.8M 2026-05-14 $293.45
2025 Q4 REDUCED 6.3% -16.8% ✅ 16,097 -1,084 -6.3% 0.35% $6.4M 2026-02-13 $314.40
2025 Q3 ADDED — — — 17,181 +16,081 +1461.9% 0.59% $7.8M 2025-11-13 $453.97
2025 Q2 REDUCED 83.9% +37.2% ❌ 1,100 -5,749 -83.9% 0.03% $359K 2025-08-12 $429.93
2024 Q2 INITIATED — — — 6,849 — — 0.18% $1.7M 2024-08-12 $270.18

🏢 Other funds also holding ALNY

As of 2026 Q1 — sorted by position size

ROSENBLUM SILVERMAN SUTTON S F INC /CA 3Y 7Y 2.85% Soleus Capital Management, L.P. 3Y 1.76% Polymer Capital Management (HK) LTD 1.65% Cannon Global Investment Management, LLC 3Y 1.55% SIERRA SUMMIT ADVISORS LLC 1.46% Rhenman & Partners Asset Management AB 3Y 7Y 1.41% Bronte Capital Management Pty Ltd. 3Y 7Y 1.22% ANTIPODES PARTNERS Ltd 3Y 7Y 0.93% BAILLIE GIFFORD & CO 3Y 7Y 0.84% Privium Fund Management B.V. 3Y 0.84%

FAQ About Entropy Technologies, LP and ALNY

These are the practical questions this page is built to answer before you even open the full history table.

How long has Entropy Technologies, LP reported owning ALNY?

Entropy Technologies, LP reported ALNY across 5 quarterly 13F filings, from 2024 Q2 through 2026 Q1.

What was the largest reported ALNY position in Entropy Technologies, LP's portfolio?

The largest reported portfolio weight for ALNY was 0.59% in 2025 Q3.

What is the latest reported ALNY position on this page?

The most recent filing on this page is 2026 Q1, when Entropy Technologies, LP reported 35,719 shares, equal to 0.55% of portfolio, with an estimated market value of $11.8M.

What does the chart on this ALNY ownership page compare?

The chart compares Entropy Technologies, LP's quarterly ALNY portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did Entropy Technologies, LP time their ALNY position?

Based on 13F filing dates vs. subsequent ALNY price moves, Entropy Technologies, LP correctly timed 2 out of 4 reported position changes (50%). The annualised alpha on ALNY relative to SPY over the holding period was -50.8%.

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