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Equity · Technology

MKSI

NASDAQ

MKS Inc.

$280 +0.36% vs prior close Finazon · prior-day close, indicative (IEX-derived, not the official close) · Oct 5, 2026
Price · Chart
44 sessions
$350 $200 21 Jul 5 Oct

The line runs $345 on 21 July through $280 on 5 October, on a scale from $200 to $350. Days the market did not trade hold the previous close, flat.

Track this symbol on TradingView TradingView chart · our licensed closes: 44 sessions, 21 Jul – 5 Oct 2026
Market cap $18.9B
P/E (TTM) 44.7
52-week range $121 – $447.81
Avg volume 73.2K

as of Oct 5, 2026

MKSI insider trades

SEC Form 4 · last 90 days · newest reported trade 1 Sep 2026
Open-market buys 0
Open-market sells 3
Net sold $3.23M
Non-trade filings 0
Date Insider Type Shares Value
01 Sep 2026 Mora Elizabeth Director Sell 300 $75K
14 Aug 2026 Lee John Tseng-Chung President & CEO Sell 10,000 $3.02M
03 Aug 2026 Williams John Edward EVP & GM, PSD Sell 457 $132K

MKSI reported financials

SEC EDGAR XBRL SEC EDGAR

MKSI reported revenue of $3.9B for the fiscal year ended 31 Dec 2025. Net income over the same period was $295.0M.

Figure Reported Period
Revenue $3.9B 31 Dec 2025 fiscal year
Net income $295.0M 31 Dec 2025 fiscal year
Diluted EPS $4.37 31 Dec 2025 fiscal year
Total assets $8.9B 30 Jun 2026 at period end
Total equity $3.0B 30 Jun 2026 at period end

MKSI earnings

SEC EDGAR
Date Period EPS Revenue
30 Jun 2026 Q2 2026 $2.41 $1.25B
31 Mar 2026 Q1 2026 $1.18 $1.08B
31 Dec 2025 FY 2025 $4.37 $3.93B
30 Sep 2025 Q3 2025 $1.10 $988M
30 Jun 2025 Q2 2025 $0.92 $973M
31 Mar 2025 Q1 2025 $0.77 $936M
31 Dec 2024 FY 2024 $2.81 $3.59B
30 Sep 2024 Q3 2024 $0.92 $896M

Next report no date announced in SEC filings yet

Reported figures & scheduled dates · SEC EDGAR filings

MKSI institutional holders

SEC Form 13F SEC EDGAR

15 of the 45 institutional funds we track reported a MKSI position for the quarter ended 30 Jun 2026 — a combined $2.7B; the latest of those filings landed 02 Sep 2026.

Fund Action Shares Value
Point72 Asset Management Held (±25%) +24.0% shares 1,996,843 $888.2M
Whale Rock Capital Management Held (±25%) −2.7% shares 1,271,373 $565.5M
Citadel Advisors Trimmed −26.3% shares 697,670 $310.3M
Millennium Management Trimmed −27.9% shares 645,071 $286.9M
AQR Capital Management Held (±25%) +3.5% shares 638,333 $280.2M
Balyasny Asset Management Trimmed −36.1% shares 260,178 $115.7M
Marshall Wace Added +128.1% shares 225,115 $100.1M
Two Sigma Investments Trimmed −48.6% shares 143,365 $63.8M
Glenview Capital Management New position 98,532 $43.8M
Renaissance Technologies Trimmed −61.0% shares 40,403 $18.0M

Showing the 10 largest of 15 reported positions. The figures above count all of them.

MKSI fails-to-deliver

SEC CNS data SEC

On 24 Sep 2026, 43,657 shares of MKSI failed to deliver (about $11.5M).

Settlement date Shares failed Notional % of shares out
24 Sep 2026 43,657 $11.5M 0.065%
18 Sep 2026 32 $8K <0.001%
17 Sep 2026 213 $50K <0.001%

Congressional trades in MKSI

STOCK Act disclosures House disclosures

The most recent congressional trade disclosed in MKSI is a sale by Lisa C. McClain (house, MI), dated 31 Oct 2025.

Date Member Type Amount
31 Oct 2025 filed 21 Nov 2025 Lisa C. McClain house · Republican–MI Sale $1K–$15K
30 Oct 2025 filed 21 Nov 2025 Lisa C. McClain house · Republican–MI Sale $1K–$15K
30 Oct 2025 filed 21 Nov 2025 Lisa C. McClain house · Republican–MI Purchase $1K–$15K
04 Aug 2025 filed 12 Sep 2025 Lisa C. McClain house · Republican–MI Purchase $1K–$15K

Sources

  1. Finazonprior-day close, indicative (IEX-derived, not the official close), most closes dollar-rounded at the source
  2. TradingViewthe price chart widget, drawn by TradingView from their own data
  3. SEC EDGARSEC EDGAR XBRL company facts · latest period ended 30 Jun 2026
  4. SEC EDGARSEC EDGAR 13F filings
  5. SECSEC fails-to-deliver (CNS) data
  6. House disclosuresU.S. House of Representatives financial disclosures
  7. SEC EDGARValuation computed from SEC EDGAR filings