$MKSI
MKS Inc. Common Stock
XNAS•Technology•Industrial Instruments for Measurement, Display, and Control
Why is MKSI up today? It is at $281.88 (+0.10%), and our scanner flagged it 117 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment MKSI spikes, and full due diligence on MKSI — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $281.88
- Change today
- +0.10%
- Previous close
- $281.60
- 52-week range
- $97.50 – $447.62
- Market cap
- $19.06B
- Dividend yield
- 0.36% ($1.00)
- Institutional own.
- 99.9%
- Total held
- 100.0%
- Short interest
- 5.8M ▲ +12% vs prior · as of 2026-07-31
- Days to cover
- 4.0d
- Avg daily volume
- 1.3M
- Sector
- Technology
- Industry
- Industrial Instruments for Measurement, Display, and Control
- Exchange
- XNAS
- 5m
- 0.6x
- 15m
- 0.5x
- 1h
- 0.4x
- 1D
- 0.2x
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Why is $MKSI moving today?
Here is the latest on MKSI from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for MKSI today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
Insiders
Insiders selling0 buys, 12 sells last 3 months (7/49 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Lee John Tseng-Chung Officer | Sold (automatic/other) | -10K 0.01% of company | sold 6.9% | 135K | $3.0M at $302.01 | Aug 14, 26 |
Williams John Edward Officer | Sold (automatic/other) | -457 | sold 10% | 4K | $132K at $288.31 | Aug 3, 26 |
Schreiner James Alan Officer | Sold (automatic/other) | -4K | sold 15% | 19K | $1.2M at $345.52 | Jun 12, 26 |
Schreiner James Alan Officer | Sold (automatic/other) | -781 | sold 3.3% | 23K | $248K at $317.42 | Jun 10, 26 |
Mccarthy Michelle M Officer | Sold (automatic/other) | -2K | sold 100% | 2 | $767K at $315.23 | Jun 5, 26 |
Mora Elizabeth Director | Sold (automatic/other) | -300 | sold 1.5% | 19K | $95K at $318.02 | Jun 1, 26 |
Henry David Philip Officer | Sold (automatic/other) | -6K | sold 37% | 10K | $1.9M at $314.43 | Jun 1, 26 |
Colella Gerald G Director | Sold (automatic/other) | -20K 0.03% of company | sold 50% | 20K | $6.6M at $330.38 | May 27, 26 |
Donahue Joseph B Director | Sold (automatic/other) | -2K | sold 17% | 10K | $689K at $327.95 | May 27, 26 |
Henry David Philip Officer | Sold (automatic/other) | -3K | sold 13% | 16K | $826K at $330.50 | May 26, 26 |
Lee John Tseng-Chung Officer | Sold (automatic/other) | -10K 0.01% of company | sold 6.5% | 145K | $3.2M at $315.48 | May 22, 26 |
Mayampurath Ramakumar Officer | Sold (automatic/other) | -9K 0.01% of company | sold 100% | 1 | $2.8M at $315.48 | May 22, 26 |
Recent Form-4 filings via Nasdaq. Open-market buys are the signal worth watching. Grants and automatic (10b5-1) sells are routine. “% of position” is the share of that insider’s own holding the trade moved. Not investment advice.
Dilution watch
UnavailableWe could not reach SEC EDGAR, so the dilution check did not run for $MKSI. This is not a clean result: there may be an offering, a registration or a shelf on file that we were unable to read. Check it yourself on SEC EDGAR before trading it.
$MKSI Sentiment
BullishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$MKSI Activity
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.
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MKSI stock FAQ
Why is $MKSI moving today?
Here is the latest on MKSI from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for MKSI today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
What is the MKSI stock price today?
MKSI last traded at $281.88, up 0.10% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Does MKSI pay a dividend?
Yes. MKSI currently has a dividend yield of about 0.36% ($1.00 per share per year). Dividend figures can change; this is not investment advice.
Where can I see live MKSI alerts?
The MKSI Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged MKSI 117 times in the last 30 days.
What exchange is MKSI on?
MKSI (MKS Inc. Common Stock) trades on XNAS, with a market cap of about $19.06B in the INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL sector.
Is MKSI good for day trading?
That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge MKSI for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.