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2026-10-09 · official close

Alnylam Pharmaceuticals, Inc. (ALNY) and the market

Exact index points ALNY contributed this session, under each index's own arithmetic, verified against official closes. New here? Read point contribution, explained.

How much did ALNY move each index today?

NASDAQ 100: ALNY moved +3.63% and contributed +0.6 points of the index's +157.3-point move (0% of it), ranking #35 of 100 members by contribution to the move.

XBI: ALNY moved +3.63% and contributed +0.08 points of the index's +4.46-point move (2% of it), ranking #22 of 154 members by contribution to the move.

ALNY closed the 2026-10-09 session at 232.68; that day's move sits in the 95th percentile of its own past year. The stock is 52.6% below its 52-week closing high and −41.5% for the year so far.

ALNY in the NASDAQ 100 beyond today

windowALNY returnpoints contributedindex moverank
1 week+5.90%+1.0 pts+75.2 pts#39 of 101
1 month−5.99%−0.1 pts+1,779.6 pts#65 of 101
quarter to date−5.70%−1.0 pts+474.7 pts#60 of 101
year to date−41.49%−22.6 pts+5,633.3 pts#90 of 101

Who moved with and against ALNY today?

On ALNY's side of the NASDAQ 100 tape: MSFT (+50.0 pts), AMZN (+48.8 pts), GOOGL (+22.3 pts). Pulling the other way: AAPL (−29.8 pts), NVDA (−15.6 pts), TMUS (−13.2 pts).

Every member's contribution, top to bottom, is on the index dashboards; the day's story is in the market-close note. Machine-readable figures for this stock: /api/stock/ALNY, free to cite with attribution.

Compiled by the WMTMT attribution engine · updates every session · methodology