MKS Ownership | Who Owns MKS?
MKS Ownership Summary
MKS is owned by 24.58% institutional investors, 0.54% insiders, and 74.89% retail investors. Vanguard group is the largest institutional shareholder, holding 11.13% of MKSI shares. American Funds SMALLCAP World A is the top mutual fund, with 3.80% of its assets in MKS shares.
MKSI Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | MKS | 24.58% | 0.54% | 74.89% |
| Sector | Technology Stocks | 36.93% | 14.89% | 48.18% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Vanguard group | 7.49M | 11.13% | $1.20B |
| Blackrock | 6.61M | 9.87% | $863.50M |
| Blackrock funding, inc. /de | 6.64M | 9.87% | $1.53B |
| Invesco | 3.72M | 5.53% | $855.23M |
| Jpmorgan chase | 2.10M | 3.11% | $441.22M |
| State street | 2.06M | 3.06% | $472.89M |
| Capital investors | 1.97M | 2.93% | $452.44M |
| Fmr | 1.93M | 2.87% | $444.42M |
| Wellington management group llp | 1.83M | 2.72% | $421.27M |
| Price t rowe associates inc /md/ | 1.70M | 2.53% | $390.71M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Fenghe fund management pte. | 456.33K | 14.49% | $104.87M |
| Blue grotto capital | 375.00K | 9.93% | $86.18M |
| Daventry group, lp | 36.56K | 9.57% | $8.40M |
| Value management | 245.05K | 9.13% | $56.31M |
| Light street capital management | 122.26K | 5.26% | $28.10M |
| Aspex management (hk) | 1.54M | 5.13% | $353.63M |
| Harber asset management | 34.23K | 5.03% | $7.87M |
| Divisar capital management | 85.50K | 5.01% | $19.65M |
| Park west asset management | 249.24K | 4.86% | $57.28M |
| Talos eurisko asset management lp | 114.01K | 4.48% | $26.20M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Aspex management (hk) | 1.54M | 5.13% | 1.54M |
| Whale rock capital management | 1.31M | 3.88% | 1.31M |
| Capital world investors | 1.28M | 0.04% | 1.28M |
| Point72 asset management | 1.61M | 0.47% | 984.53K |
| Madison investment advisors | 933.94K | 1.10% | 933.94K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Victory capital management | 878.76K | 0.13% | -1.68M |
| Capital investors | 1.97M | 0.11% | -1.27M |
| Fmr | 1.93M | 0.02% | -1.26M |
| Price t rowe associates inc /md/ | 1.70M | 0.05% | -1.05M |
| Cooke & bieler lp | 210.05K | 0.55% | -756.65K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Aspex management (hk) | 1.54M | 5.13% | 1.54M | $353.63M |
| Whale rock capital management | 1.31M | 3.88% | 1.31M | $300.30M |
| Capital world investors | 1.28M | 0.04% | 1.28M | $293.51M |
| Madison investment advisors | 933.94K | 1.10% | 933.94K | $97.49M |
| Norges bank | 922.74K | 0.02% | 922.74K | $147.45M |
Sold Out
| Holder | Change |
|---|---|
| Crewe advisors | -1.00 |
| Mendota financial group | -1.00 |
| Ross\johnson & associates | -1.00 |
| Tortoise investment management | -2.00 |
| Greenline partners | -3.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 319 | -40.04% | 16,540,297 | -76.55% | 24 | 0.22% | 176 | -42.86% | 94 | -34.27% |
| Dec 31, 2025 | 181 | -60.13% | 12,801,198 | -82.22% | 19 | 0.17% | 108 | -53.04% | 40 | -71.22% |
| Sep 30, 2025 | 192 | -52.00% | 18,973,653 | -74.01% | 28 | 0.24% | 98 | -56.83% | 58 | -53.97% |
| Jun 30, 2025 | 404 | -0.98% | 74,637,907 | 6.06% | 111 | 1.02% | 228 | - | 127 | 6.72% |
| Mar 31, 2025 | 10 | -97.67% | 1,910,894 | -97.29% | 2 | 0.03% | 9 | -96.25% | 1 | -99.19% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| American Funds SMALLCAP World A | 2.56M | 3.80% | -80.60K |
| Sycamore Mid Cap Value Comp | 2.29M | 3.41% | 2.23M |
| iShares Core S&P Mid-Cap ETF | 2.27M | 3.36% | -1.14K |
| Vanguard Total Stock Mkt Idx Inv | 2.14M | 3.17% | 5.13K |
| Vanguard US Total Market Shares ETF | 2.12M | 3.15% | 1.63K |
| Vanguard Small Cap Index | 1.55M | 2.29% | -3.27K |
| Invesco Small Cap Value A | 1.15M | 1.70% | 410.54K |
| iShares Semiconductor ETF | 1.13M | 1.68% | - |
| Neuberger Berman Genesis Inv | 1.07M | 1.60% | -41.15K |
| Vanguard Small Cap Value Index Inv | 995.06K | 1.47% | 7.03K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Jun 10, 2026 | Schreiner James Alan | EVP & COO | Sell | $247.91K |
| Jun 05, 2026 | McCarthy Michelle M | SVP & Chief Accounting Officer | Sell | $767.27K |
| Jun 01, 2026 | Henry David Philip | EVP, Global Str Mktg & GM, MSD | Sell | $1.89M |
| Jun 01, 2026 | Mora Elizabeth | - | Sell | $95.41K |
| May 27, 2026 | Donahue Joseph B | - | Sell | $688.70K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | 20 |
| 2026 Q1 | - | 18 |
| 2025 Q4 | - | 3 |
| 2025 Q3 | - | 6 |
| 2025 Q2 | - | 1 |
MKSI Ownership FAQ
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