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MKS (MKSI)
NASDAQ
$393.74-$26.82 (-6.38%)
Price as of Jun 23, 2026 6:29 PM EDT- $28.4BMarket Cap
- 359.23%1-Year Change
- Scientific & Technical InstrumentsIndustry
MKS (MKSI)
$393.74-$26.82 (-6.38%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD GROUP INC | 11.09% | 7.5M | -264,792 (-3.54%) | Dec 31, 2025 |
BLACKROCK FUNDING, INC. /DE | 10.54% | 7.1M | +266,824 (+3.75%) | Dec 31, 2024 |
BLACKROCK, INC. | 9.83% | 6.6M | +502,891 (+7.57%) | Mar 31, 2026 |
BLACKROCK INC. | 9.79% | 6.6M | +201,243 (+3.04%) | Jun 30, 2024 |
WELLINGTON MANAGEMENT CO LLP | 6.52% | 4.4M | -281,936 (-6.41%) | Dec 31, 2021 |
BLACKROCK FUND ADVISORS | 6.35% | 4.3M | +468,005 (+10.92%) | Dec 31, 2016 |
INVESCO LTD. | 5.51% | 3.7M | -134,052 (-3.60%) | Mar 31, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
SENIOR DEBT PORTFOLIO | 49.49% | 33.4M | 0 (0.00%) | Jan 31, 2026 |
JANUS INVESTMENT FUND | 47.67% | 32.2M | 0 (0.00%) | Mar 31, 2026 |
JOHN HANCOCK SOVEREIGN BOND FUND | 40.50% | 27.4M | 0 (0.00%) | Feb 28, 2026 |
LORD ABBETT INVESTMENT TRUST | 38.08% | 25.7M | 0 (0.00%) | Feb 28, 2026 |
LORD ABBETT BOND DEBENTURE FUND INC | 33.37% | 22.5M | 0 (0.00%) | Mar 31, 2026 |
EATON VANCE FLOATING RATE PORTFOLIO/MA | 26.37% | 17.8M | 0 (0.00%) | Jan 31, 2026 |
Virtus Investment Trust | 18.43% | 12.4M | 0 (0.00%) | Mar 31, 2026 |
Current Ownership Distribution
- Mutual Funds3.4B (73.66%)
- Institutions1.2B (25.92%)
- Insiders19.4M (0.42%)
- Other0 (0.00%)
Insider Transactions
- 0.42% (19.4M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 4Number of InsiderSelling (last 12 months)
- $33.3MAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Schreiner James Alan EVP & COO | Sell | Jun 12, 2026 | $853,789.56 | 2,471 | $345.52 | 20,230 |
Schreiner James Alan EVP & COO | Sell | Jun 12, 2026 | $281,281.51 | 812 | $346.41 | 19,418 |
Schreiner James Alan EVP & COO | Sell | Jun 12, 2026 | $75,299.00 | 217 | $347.00 | 19,201 |
Schreiner James Alan EVP & COO | Sell | Jun 10, 2026 | $247,905.02 | 781 | $317.42 | 22,701 |
Mora Elizabeth | Sell | Sep 02, 2025 | $29,955.00 | 300 | $99.85 | 19,263 |
Schreiner James Alan EVP & COO | Exempt | Aug 18, 2025 | $0.00 | 2,641 | $0.00 | 13,018 |
Schreiner James Alan EVP & COO | Exempt | Aug 18, 2025 | $0.00 | 2,641 | $0.00 | 25,333 |
Schreiner James Alan EVP & COO | In Kind | Aug 18, 2025 | $125,174.78 | 1,249 | $100.22 | 24,084 |
Williams John Edward EVP & GM, PSD | Exempt | Aug 15, 2025 | $0.00 | 947 | $0.00 | 7,344 |
Williams John Edward EVP & GM, PSD | Exempt | Aug 15, 2025 | $0.00 | 947 | $0.00 | 3,948 |
Williams John Edward EVP & GM, PSD | In Kind | Aug 15, 2025 | $32,256.84 | 308 | $104.73 | 3,640 |
Schreiner James Alan EVP & COO | Award | Aug 04, 2025 | $0.00 | 1,330 | $0.00 | 15,659 |
Moloney Jacqueline F | Sell | Aug 01, 2025 | $27,630.00 | 300 | $92.10 | 11,862 |
Schreiner James Alan EVP & COO, MSD | Sell | Jul 07, 2025 | $98,035.08 | 957 | $102.44 | 22,692 |
Henry David Philip EVP, Operations & Corp Mktg | Sell | Jul 03, 2025 | $210,000.00 | 2,000 | $105.00 | 20,571 |
Mora Elizabeth | Sell | Jun 02, 2025 | $24,534.00 | 300 | $81.78 | 19,563 |
JABRE WISSAM G | Award | May 12, 2025 | $0.00 | 2,479 | $0.00 | 4,488 |
Mora Elizabeth | Award | May 12, 2025 | $0.00 | 2,479 | $0.00 | 19,863 |
Batra Raj | Award | May 12, 2025 | $0.00 | 2,479 | $0.00 | 15,445 |
COLELLA GERARD G | Award | May 12, 2025 | $0.00 | 2,479 | $0.00 | 8,217 |
Donahue Joseph B | Award | May 12, 2025 | $0.00 | 2,479 | $0.00 | 11,351 |
CANNONE PETER III | Award | May 12, 2025 | $0.00 | 2,479 | $0.00 | 9,612 |
Moloney Jacqueline F | Award | May 12, 2025 | $0.00 | 2,479 | $0.00 | 12,162 |
Williams John Edward EVP & GM, PSD | Exempt | Apr 17, 2025 | $0.00 | 1,740 | $0.00 | 8,291 |
Williams John Edward EVP & GM, PSD | Exempt | Apr 17, 2025 | $0.00 | 1,740 | $0.00 | 3,566 |
Williams John Edward EVP & GM, PSD | In Kind | Apr 17, 2025 | $35,984.85 | 565 | $63.69 | 3,001 |
Moloney Jacqueline F | Sell | Mar 03, 2025 | $27,738.00 | 300 | $92.46 | 9,683 |
Mora Elizabeth | Sell | Mar 03, 2025 | $25,426.50 | 275 | $92.46 | 17,384 |
COLELLA GERARD G | Sell | Feb 18, 2025 | $836,224.00 | 8,000 | $104.53 | 60,017 |
Burke Kathleen Flaherty EVP, GC & Secretary | Award | Feb 18, 2025 | $0.00 | 7,822 | $0.00 | 29,422 |