How to Buy Merck & Co., Inc. (MRK) Stock
Compare 13 brokers offering MRK, check which offer overnight sessions, see options pricing, and compare fractional-share terms.
- Day range
- $143.08 – $147.47
- 52-week range
- $85.24 – $156.92
- Volume
- 5.09M
- Market cap
- $362.24B
Where to buy MRK
13 brokers in our matrix offer MRK. Verify availability and current fees with each broker before trading.
| Broker | Commission | Fractional | Extended | Overnight | Options | OTC access |
|---|---|---|---|---|---|---|
 Charles Schwab (thinkorswim)Review | $0 | Schwab Stock Slices, S&P 500 only, ≥ $5/slice, up to 30 at once | ~1,130 | $0.65 | Most (3/5) | |
 E*TRADE (Morgan Stanley)Review | $0 listed | ~20 | $0.65 | Most (4/5) | ||
 FidelityReview | $0 | Stocks by the Slice, 7,000+ stocks/ETFs, from $1 | $0.65 | Partial (2+0) | ||
 FirstradeReview | $0 | ~4,000+ tickers, ≥ $5 | ~1,200 | $0 | Most (4/5) | |
 Interactive BrokersReview | $0 (Lite) / per-share (Pro) | ~10,000 | per-contract pricing | Full | ||
 Merrill EdgeReview | $0 | $0.65 | Most (3/5) | |||
 MoomooReview | $0 | $0 | Limited only | |||
 Public.comReview | $0 | rebate model | Limited only | |||
 RobinhoodReview | $0 | ≥ $1 stocks, market cap ≥ $25M | ~1,134 | $0 | None | |
 SoFi Active InvestingReview | $0 | $0 | Partial (1+2) | |||
 tastytradeReview | $0 stocks | $1.00 open, $0 close (capped at $10 per leg) | Limited only | |||
 TradeStationReview | $0 listed | $0.50 / $0.60 | Most (4/5) | |||
 WebullReview | $0 | $0 | Limited 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 MRKis 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
MRK has on-chain equivalents traded 24/7 internationally. Not available to US residents. Full breakdown of what you actually own →
- Kraken xStocksSymbol
MRKx· 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 Merck & Co., Inc.
- Sector
- PHARMACEUTICAL PREPARATIONS
- Employees
- 75,000
- Headquarters
- RAHWAY, NJ
- Listed
- 1949-04-20
- Market cap
- $362.24B
Frequently asked
Where can I buy Merck & Co., Inc. (MRK)?
MRK 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 MRK 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 MRK is eligible with your broker. Overnight sessions route through ATSs with wider spreads and limit orders only.
Does Robinhood offer MRK?
Yes. Robinhood offers MRK as a regular exchange-listed security.
Does Fidelity offer MRK?
Yes. Fidelity offers MRK as a regular exchange-listed security.
Does Webull offer MRK?
Yes. Webull offers MRK as a regular exchange-listed security.
Is MRK optionable?
Yes. MRK has listed options contracts. Per-contract pricing varies by broker — see the Options column in the matrix.
Is there a tokenized version of MRK?
Yes — MRK 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 MRK?
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 MRK qualifies.
Related reading
Background on the trading features that apply to MRK.