MKS Inc. Falls as Semiconductor Equipment Stocks Stay Under Pressure

MKS Inc. (MKSI) is down 3.2% today. Here is some analysis on what might have caused this price movement.

Analysis: The most likely driver appears to be broad weakness across semiconductor and chip-equipment names rather than a fresh company-specific announcement. This could be because investors were already cautious about AI spending, tariffs, and next week’s macro and earnings calendar, and MKS traded lower with the wider group.

Details:

MKS had no new major operating news on its investor news page today, making a sector-led move more likely.

The company has scheduled its second-quarter 2026 earnings call for August 6, 2026, which can keep trading cautious ahead of results.

In its first-quarter 2026 materials, MKS said second-quarter guidance reflected the impact of U.S. import tariffs and retaliatory actions already in place at that time.

Peer chip-equipment stocks such as Applied Materials, Lam Research, and the semiconductor ETF SOXX were also lower today, pointing to a broader industry selloff instead of an isolated MKS event.

Sources:

MKS Investor Relations, SEC, Reuters

Disclaimer: This price movement analysis was generated with the help of AI. Please double-check the information provided for mistakes.

$MKSI Insider Trading Activity

$MKSI insiders have traded $MKSI stock on the open market 39 times in the past 6 months. Of those trades, 0 have been purchases and 39 have been sales.

Here’s a breakdown of recent trading of $MKSI stock by insiders over the last 6 months:

GERALD G COLELLA has made 0 purchases and 9 sales selling 40,000 shares for an estimated $11,736,749.
JOHN TSENG-CHUNG LEE (President & CEO) has made 0 purchases and 5 sales selling 40,000 shares for an estimated $10,858,042.
DAVID PHILIP HENRY (EVP, Global Str Mktg & GM, MSD) has made 0 purchases and 3 sales selling 10,500 shares for an estimated $3,235,953.
RAMAKUMAR MAYAMPURATH (EVP & CFO) sold 8,810 shares for an estimated $2,779,378
JAMES ALAN SCHREINER (EVP & COO) has made 0 purchases and 5 sales selling 8,381 shares for an estimated $2,503,775.
ERIC ROBERT TARANTO (EVP & GM, VSD) has made 0 purchases and 2 sales selling 6,020 shares for an estimated $1,366,941.
MICHELLE M MCCARTHY (SVP & Chief Accounting Officer) has made 0 purchases and 3 sales selling 3,900 shares for an estimated $1,133,772.
KATHLEEN FLAHERTY BURKE (EVP, GC & Secretary) sold 4,254 shares for an estimated $1,063,500
JACQUELINE F MOLONEY has made 0 purchases and 4 sales selling 3,569 shares for an estimated $1,036,707.
PETER III CANNONE has made 0 purchases and 2 sales selling 2,600 shares for an estimated $732,164.
JOSEPH B DONAHUE sold 2,100 shares for an estimated $688,703
JOHN EDWARD WILLIAMS (EVP & GM, PSD) sold 2,042 shares for an estimated $523,744
ELIZABETH MORA has made 0 purchases and 2 sales selling 600 shares for an estimated $167,238.

To track insider transactions, check out Quiver Quantitative's insider trading dashboard. You can access data on insider stock transactions through the Quiver Quantitative API insider transaction endpoint.

$MKSI Hedge Fund Activity

We have seen 337 institutional investors add shares of $MKSI stock to their portfolio, and 235 decrease their positions in their most recent quarter.

Here are some of the largest recent moves:

ASPEX MANAGEMENT (HK) LTD added 1,538,789 shares (+inf%) to their portfolio in Q1 2026, for an estimated $353,629,100
WHALE ROCK CAPITAL MANAGEMENT LLC added 1,306,724 shares (+inf%) to their portfolio in Q1 2026, for an estimated $300,298,242
CAPITAL WORLD INVESTORS added 1,277,200 shares (+inf%) to their portfolio in Q1 2026, for an estimated $293,513,332
CAPITAL INTERNATIONAL INVESTORS removed 1,270,460 shares (-39.2%) from their portfolio in Q1 2026, for an estimated $291,964,412
FMR LLC removed 1,264,492 shares (-39.5%) from their portfolio in Q1 2026, for an estimated $290,592,906
PRICE T ROWE ASSOCIATES INC /MD/ removed 1,053,702 shares (-38.3%) from their portfolio in Q1 2026, for an estimated $242,151,256
POINT72 ASSET MANAGEMENT, L.P. added 984,532 shares (+157.3%) to their portfolio in Q1 2026, for an estimated $226,255,298

To track hedge funds' stock portfolios, check out Quiver Quantitative's institutional holdings dashboard. You can access data on hedge funds moves and 13F filings through the Quiver Quantitative API 13F endpoint.

$MKSI Government Contracts

We have seen $864,146 of award payments to $MKSI over the last year.

Here are some of the awards which we have have seen pay out the most over the last year:

TSUNAMI LASER UPGRADE: $124,906
TWO (2) LAB TABLES WITH DIFFERENT DIMENSIONS TO BE DELIVERED TO WHITE SANDS MISSILE RANGE (WSMR), NEW MEXICO.: $39,327

To track government contracts to publicy traded companies, check out Quiver Quantitative's government contracts dashboard. You can access data on government contracts through the Quiver Quantitative API government contracts endpoint.

$MKSI Analyst Ratings

Wall Street analysts have issued reports on $MKSI in the last several months. We have seen 1 firms issue buy ratings on the stock, and 0 firms issue sell ratings.

Here are some recent analyst ratings:

Needham issued a "Buy" rating on 05/07/2026

To track analyst ratings and price targets for $MKSI, check out Quiver Quantitative's $MKSI forecast page.

$MKSI Price Targets

Multiple analysts have issued price targets for $MKSI recently. We have seen 14 analysts offer price targets for $MKSI in the last 6 months, with a median target of $382.5.

Here are some recent targets:

Vijay Rakesh from Mizuho set a target price of $415.0 on 07/09/2026
Joseph Moore from Morgan Stanley set a target price of $442.0 on 07/06/2026
Bhavesh Lodaya from BMO Capital set a target price of $453.0 on 06/30/2026
Steve Barger from Keybanc set a target price of $475.0 on 06/29/2026
C.J. Muse from Cantor Fitzgerald set a target price of $600.0 on 06/29/2026
Vivek Arya from B of A Securities set a target price of $500.0 on 06/23/2026
Peter Peng from JP Morgan set a target price of $365.0 on 05/08/2026

This article is not financial advice. See Quiver Quantitative's disclaimers for more information. Note that there may be inaccuracies due to mistakes in ticker-mapping, and other anomalies.