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How to Buy Alnylam Pharmaceuticals, Inc. (ALNY) Stock

Compare 13 brokers offering ALNY, check which offer overnight sessions, see options pricing, and compare fractional-share terms.

ALNY
$155.95−$0.7150 (−0.46%)
Day range
$154.66 – $159.36
52-week range
$154.66 – $479.79
Volume
2.33M
Market cap
$20.98B
Exchange
XNAS
Asset class
common
Optionable
Yes
24-hour trading
7 brokers — verify symbol
Fractional shares
10 brokers — verify symbol
Tokenized
Yes
Market cap tier
large

Where to buy ALNY

13 brokers in our matrix offer ALNY. Verify availability and current fees with each broker before trading.

BrokerCommissionFractionalExtendedOvernightOptionsOTC access
Charles Schwab (thinkorswim) logoCharles Schwab (thinkorswim)Review$0
Schwab Stock Slices, S&P 500 only, ≥ $5/slice, up to 30 at once
~1,130
$0.65Most (3/5)
E*TRADE (Morgan Stanley) logoE*TRADE (Morgan Stanley)Review$0 listed
~20
$0.65Most (4/5)
Fidelity logoFidelityReview$0
Stocks by the Slice, 7,000+ stocks/ETFs, from $1
$0.65Partial (2+0)
Firstrade logoFirstradeReview$0
~4,000+ tickers, ≥ $5
~1,200
$0Most (4/5)
Interactive Brokers logoInteractive BrokersReview$0 (Lite) / per-share (Pro)
~10,000
per-contract pricingFull
Merrill Edge logoMerrill EdgeReview$0
$0.65Most (3/5)
Moomoo logoMoomooReview$0
$0Limited only
Public.com logoPublic.comReview$0
rebate modelLimited only
Robinhood logoRobinhoodReview$0
≥ $1 stocks, market cap ≥ $25M
~1,134
$0None
SoFi Active Investing logoSoFi Active InvestingReview$0
$0Partial (1+2)
tastytrade logotastytradeReview$0 stocks
$1.00 open, $0 close (capped at $10 per leg)Limited only
TradeStation logoTradeStationReview$0 listed
$0.50 / $0.60Most (4/5)
Webull logoWebullReview$0
$0Limited only

24-Hour / Overnight trading

These brokers run an overnight session: Charles Schwab (thinkorswim), Interactive Brokers, Robinhood, E*TRADE (Morgan Stanley), Webull, Moomoo, Firstrade. Each publishes its own list of symbols admitted to that session, and those lists are typically limited to large-cap index members. We do not track them per symbol, so check whether ALNYis on your broker’s list before planning an overnight order.

Overnight sessions route through ATSs, typically have wider spreads, accept limit orders only, and offer no guaranteed fills.

Tokenized & CFD/Perp equivalents

ALNY has on-chain equivalents traded 24/7 internationally. Not available to US residents. Full breakdown of what you actually own →

  • Kraken xStocks
    Symbol ALNYx · tokenized-1to1 · non-US / non-EEA

Synthetic exposure carries no shareholder rights, may be subject to leverage, and is geo-restricted. See full disclaimer.

About Alnylam Pharmaceuticals, Inc.

Alnylam Pharmaceuticals is a leader in the study of RNA interference (RNAi) therapeutics. RNAi is a naturally occurring biological pathway within cells for sequence-specific silencing and regulation of gene expression. Alnylam's commercial RNAi therapeutic products include Onpattro and Amvuttra (for hATTR amyloidosis), Givlaari (for acute hepatic porphyria), and Oxlumo (for primary hyperoxaluria type 1), all developed and commercialized by Alnylam. Plus, Leqvio (for hypercholesterolemia) and Qfitlia (for hemophilia A or B), which are being commercialized by Alnylam's partners, Novartis and Sanofi, respectively. It also has several clinical programs across various therapeutic areas, including cardio-metabolic diseases, neuroscience, and hematology.
Sector
PHARMACEUTICAL PREPARATIONS
Employees
2,500
Headquarters
CAMBRIDGE, MA
Listed
2004-05-28
Market cap
$20.98B

Frequently asked

Where can I buy Alnylam Pharmaceuticals, Inc. (ALNY)?

ALNY is offered by 13 brokers in our matrix, including Charles Schwab (thinkorswim), E*TRADE (Morgan Stanley), Fidelity, Firstrade, Interactive Brokers. Compare commissions, fractional eligibility, and overnight availability in the broker matrix above.

Can I buy ALNY after hours or overnight?

Most brokers in the matrix support pre-market (4 AM–9:30 AM ET) and after-hours (4–8 PM ET) sessions. A true overnight session is offered by Charles Schwab (thinkorswim), Interactive Brokers, Robinhood, E*TRADE (Morgan Stanley), and others, but each admits only its own list of symbols — usually large-cap index members — so confirm ALNY is eligible with your broker. Overnight sessions route through ATSs with wider spreads and limit orders only.

Does Robinhood offer ALNY?

Yes. Robinhood offers ALNY as a regular exchange-listed security.

Does Fidelity offer ALNY?

Yes. Fidelity offers ALNY as a regular exchange-listed security.

Does Webull offer ALNY?

Yes. Webull offers ALNY as a regular exchange-listed security.

Is ALNY optionable?

Yes. ALNY has listed options contracts. Per-contract pricing varies by broker — see the Options column in the matrix.

Is there a tokenized version of ALNY?

Yes — ALNY has tokenized or synthetic equivalents on Kraken xStocks. These are not available to US residents and carry their own risk profile, including leverage and no shareholder rights.

Can I buy a fractional share of ALNY?

10 brokers in the matrix offer fractional shares, but each restricts the feature to its own symbol universe — Schwab to the S&P 500, Robinhood to stocks above a market-cap floor, Fidelity to a 7,000-name list. Check the Fractional column above for each broker's scope and minimum, then confirm ALNY qualifies.

Related reading

Background on the trading features that apply to ALNY.