StockUnited States
Merck & Co., Inc. MRK
Merck & Co., Inc. trades in United States under the ticker MRK. Delayed 15 minutes here, real time on the API.
MRK price chart
Sep 24 to Oct 23 UTC
- Previous close
- 147.24
- Day range
- 143.41145.70
- 52-week range
- 82.01156.92
- Volume
- 6.74M
- Avg volume (30d)
- 9.61M
Performance
MRK over time
- 1W−0.47%
- 1M−1.83%
- 3M+10.83%
- 6M+29.82%
- YTD+38.01%
- 1Y+66.04%
Key figures
About Merck & Co., Inc.
- Market
- United States
- Sector
- Healthcare
- Industry
- Drug Manufacturers - General
- Market cap
- 363.27 B USD
- Shares outstanding
- 2.47B
- Free float
- 2.46B99.8% of shares
- Short interest
- 28.27M1.15% of float
- Days to cover
- 2.9
- Insider ownership
- 0.06%
- Institutional ownership
- 82.9%
- Beta
- 0.22
- Employees
- 73,000
Reference fields refresh on a monthly cadence and come from the fundamentals endpoint. API symbol: US:MRK.
Integration
MRK in your app, in real time
The page above is the delayed view. These are the calls that return MRK live: one snapshot for the headline numbers, one aggregate call for the chart, one WebSocket subscription for every tick after that. Same symbol, same field names, on every asset class.
curl "https://api.tickerlayer.com/stocks/snapshot/US:MRK" \
-H "x-api-key: YOUR_API_KEY"curl "https://api.tickerlayer.com/stocks/agg/US:MRK/1/day/2025-10-24/2026-10-24" \
-H "x-api-key: YOUR_API_KEY"{
"action": "subscribe",
"channels": ["stocks.quotes", "stocks.trades"],
"symbols": ["US:MRK"]
}{
"symbol": "US:MRK",
"last_price": 145.27,
"prev_close": 147.24,
"change": -1.97,
"change_percent": -1.34,
"last_timestamp": 1792785600000
}More stocks
Other United States stocks
Frequently asked questions
Is the MRK price on this page real-time?
No. The price, the ranges, and the chart are delayed by at least 15 minutes and refresh periodically. They are here so you can see the instrument the API serves before you integrate. Real-time MRK data is delivered through the REST snapshot and quote endpoints and the WebSocket channels on an API key.
Where does the MRK data come from?
TickerLayer builds derived, indicative market data from non-exchange inputs such as CFD-style pricing references, contributor pricing, and over-the-counter activity, normalized into one schema across every asset class. It is not official venue data and should not be presented to your users as such.
How do I get MRK market data through the API?
Call GET /stocks/snapshot/US:MRK for the latest price, previous close, and change, GET /stocks/quote/US:MRK for bid and ask, and GET /stocks/agg/US:MRK/1/day/{from}/{to} for OHLCV bars. Subscribe to stocks.quotes or stocks.trades on the WebSocket to stream updates as they happen.
Which bar intervals are available for MRK?
One, five, and fifteen minute bars, one and four hour bars, and daily bars, each with a documented maximum window per request. Daily history reaches back several years for most instruments; intraday history is capped by interval so responses stay fast.
Can I show MRK data to my own users?
Yes, inside your product or workflow on a commercial plan. Redistributing the raw feed, reselling it, or publicly displaying it as a standalone data product needs a separate agreement. If your use case looks like any of those, talk to us before you launch.
Is MRK available on the free tier?
Every account starts with 3,000 free REST requests a month, which is enough to integrate and test any stock. Paid plans add volume, WebSocket streaming, and commercial use.
Delayed, derived, indicative data for informational and integration purposes. Not official venue data, not investment advice, and not a system of record. See the market data disclaimer.