Equity · Technology
MKSI
NASDAQMKS Instruments (MKSI)
The line runs 292 USD on 10 August through 280 USD on 5 October, on a scale from 225 to 325. Days the market did not trade hold the previous close, flat.
- Market cap
- 18.9B USD
- P/E (TTM)
- 33.2
- Revenue, year to Dec 2025
- 3.9B USD
- EPS, diluted, year to Dec 2025
- 4.37 USD
- 52-week range
- 121 USD – 447.81 USD
- Avg volume
- 73.2K
as of Oct 5, 2026
Have MKS Instruments (MKSI) insiders bought or sold shares recently?
In the 90 days to 9 Nov 2026, MKS Instruments insiders reported 2 open-market sales and no purchases (SEC Form 4); the filings we hold, back to 22 Oct 2025, show no open-market purchase.
Form 4, 90 days to 9 Nov 2026, newest reported trade 1 Sep 2026
Buys 0Sells 2Net sold $3.10MOther filings 2
| Reported | Insider | Type | Shares | Value |
|---|---|---|---|---|
| 01 Sep 2026 | Mora ElizabethDirector | Sell | 300 | 75K USD |
| 14 Aug 2026 | Lee John Tseng-ChungPresident & CEO | Sell | 10,000 | 3.0M USD |
| Sold | 2 open-market sales | 10,300 | $3.10M |
2 other filings in the window: grants, exercises, tax withholding and transfers, not trades
| Reported | Insider | Type | Shares | Value |
|---|---|---|---|---|
| 30 Oct 2026 | Lee John Tseng-ChungPresident & CEO | Option exercise | 2,157 | |
| 30 Oct 2026 | Lee John Tseng-ChungPresident & CEO | Tax withheld | 2,157 | 436K USD |
Which funds hold MKS Instruments (MKSI)?
15 of the 45 institutional funds we track reported a MKS Instruments position for the quarter ended 30 Jun 2026 — a combined 2.7B USD; the latest of those filings landed 02 Sep 2026.
| Fund | Position | Shares | Value | Shares q/q |
|---|---|---|---|---|
| Point72 Asset Management | Held (±25%) | 1,996,843 | 888.2M USD | +24.0% |
| Whale Rock Capital Management | Held (±25%) | 1,271,373 | 565.5M USD | −2.7% |
| Citadel Advisors | Trimmed | 697,670 | 310.3M USD | −26.3% |
| Millennium Management | Trimmed | 645,071 | 286.9M USD | −27.9% |
| AQR Capital Management | Held (±25%) | 638,333 | 280.2M USD | +3.5% |
| Balyasny Asset Management | Trimmed | 260,178 | 115.7M USD | −36.1% |
| Marshall Wace | Added | 225,115 | 100.1M USD | +128.1% |
| Two Sigma Investments | Trimmed | 143,365 | 63.8M USD | −48.6% |
| Glenview Capital Management | New position | 98,532 | 43.8M USD | |
| Renaissance Technologies | Trimmed | 40,403 | 18.0M USD | −61.0% |
Showing the 10 largest of 15 reported positions. The figures above count all of them.
Have members of Congress traded MKS Instruments (MKSI)?
The most recent congressional trade disclosed in MKS Instruments is a sale by Lisa C. McClain (house, MI), dated 31 Oct 2025.
STOCK Act disclosures
| Traded | Member | Type | Amount | Filed after |
|---|---|---|---|---|
| 31 Oct 2025 | Lisa C. McClainhouse · Republican–MI | Sale | 1K USD–15K USD | 21 days |
| 30 Oct 2025 | Lisa C. McClainhouse · Republican–MI | Sale | 1K USD–15K USD | 22 days |
| 30 Oct 2025 | Lisa C. McClainhouse · Republican–MI | Purchase | 1K USD–15K USD | 22 days |
| 04 Aug 2025 | Lisa C. McClainhouse · Republican–MI | Purchase | 1K USD–15K USD | 39 days |
What has been filed or recorded for MKS Instruments (MKSI)?
The filings we hold for MKS Instruments, newest first: 1 fails-to-deliver day, 6 quarterly earnings reports, 2 annual reports and 5 reported financial figures, the latest dated 30 Sep 2026. No next earnings date is announced in SEC filings yet.
| And | ||||
|---|---|---|---|---|
| 30 Sep 2026 | Quarterly earnings | Q3 2026 reported | EPS 3.26 USD | Revenue $1.41B |
| 30 Sep 2026 | Financials | Total assets | 9.2B USD | at period end |
| 30 Sep 2026 | Financials | Total equity | 3.3B USD | at period end |
| 24 Sep 2026 | Fails to deliver | Shares failed to deliver | 43,657 shares | 11.5M USD notional · 0.065% of shares out |
| 30 Jun 2026 | Quarterly earnings | Q2 2026 reported | EPS 2.41 USD | Revenue $1.25B |
| 31 Mar 2026 | Quarterly earnings | Q1 2026 reported | EPS 1.18 USD | Revenue $1.08B |
| 31 Dec 2025 | Annual report | FY 2025 reported | EPS 4.37 USD | Revenue $3.93B |
| 31 Dec 2025 | Financials | Revenue | 3.9B USD | fiscal year |
| 31 Dec 2025 | Financials | Net income | 295.0M USD | fiscal year |
| 31 Dec 2025 | Financials | Diluted EPS | 4.37 USD | fiscal year |
| 30 Sep 2025 | Quarterly earnings | Q3 2025 reported | EPS 1.10 USD | Revenue $988M |
| 30 Jun 2025 | Quarterly earnings | Q2 2025 reported | EPS 0.92 USD | Revenue $973M |
| 31 Mar 2025 | Quarterly earnings | Q1 2025 reported | EPS 0.77 USD | Revenue $936M |
| 31 Dec 2024 | Annual report | FY 2024 reported | EPS 2.81 USD | Revenue $3.59B |
MKS Instruments (MKSI): frequently asked questions
What did MKS Instruments shares close at?
MKS Instruments closed at 280.00 USD on 5 Oct 2026, up 0.36% on the close before. That is the end-of-day price from Finazon, not a live quote.
What is MKS Instruments’ market cap?
MKS Instruments is worth 18.9B USD by market value as of 5 Oct 2026, which is the share price times the shares on issue from its SEC filings.
What is MKS Instruments’ P/E ratio?
MKS Instruments has a price-to-earnings ratio of 33.2, as of 5 Oct 2026: the share price divided by what the company earned per share over the last four reported quarters. A higher number means the market pays more for each dollar of earnings.
What is MKS Instruments’ revenue?
MKS Instruments reported revenue of 3.9B USD for the year ended 31 Dec 2025, as filed with the SEC. See Filings
Have MKS Instruments insiders bought or sold shares recently?
In the 90 days to 9 Nov 2026, MKS Instruments insiders reported 2 open-market sales and no purchases (SEC Form 4); the filings we hold, back to 22 Oct 2025, show no open-market purchase. A further 2 filings were grants, awards, gifts or exercises rather than open-market trades. See Insiders
Which funds own MKS Instruments?
15 of the 45 funds we track reported a MKS Instruments position for the quarter ended 30 Jun 2026, per their SEC Form 13F filings. The largest reported positions were Point72 Asset Management, Whale Rock Capital Management and Citadel Advisors. See Funds
Have members of Congress traded MKS Instruments?
Yes. 4 trades in MKS Instruments appear in the congressional disclosures we hold; the latest is a sale by Lisa C. McClain (House, MI) dated 31 Oct 2025, filed 21 Nov 2025. Amounts are disclosed as ranges, and a filing can follow the trade by up to 45 days. See Congress
When did MKS Instruments last report earnings?
MKS Instruments last reported earnings on 30 Sep 2026 for Q3 2026, with EPS of 3.26 USD; no next date is announced in SEC filings yet. See Filings
Answers are generated from the live figures on this page — Reddit crowd data, SEC filings and open company records — and update as the data does.
References
- Finazonprior-day close, indicative (IEX-derived, not the official close), most closes dollar-rounded at the source
- TradingViewthe price chart widget, drawn by TradingView from their own data
- SEC EDGARForm 4 filings (insider transactions)
- SEC EDGAR13F filings
- House disclosuresU.S. House of Representatives financial disclosures
- SECSEC fails-to-deliver (CNS) data
- SEC EDGARXBRL company facts, latest period ended 30 Sep 2026
- SEC EDGARreported earnings figures and scheduled report dates
- SEC EDGARValuation computed from SEC EDGAR filings