MKS Inc.
US ˙ NasdaqGS ˙ US55306N1046

SecurityMKSI / MKS Inc.
InstitutionCreative Planning
Latest Disclosed Ownership37,023 shares
Latest Disclosed Value $ 8,508,175
Creative Planning ownership in MKSI / MKS Inc.

On May 12, 2026 - Creative Planning filed a 13F-HR form disclosing ownership of 37,023 shares of MKS Inc. (US:MKSI) valued at $8,508,256 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 42,827 shares of MKS Inc.. This represents a change in shares of -13.55% during the quarter. The current value of the position is $12,226,105 USD.

Creative Planning has a history of taking positions in derivatives of the underlying security (MKSI) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MKSI / MKS Inc. Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-12 2026-03-31 13F MKS COM 55306N104 37,023 -5,804 -13.55 8,508 24.33 0.0058
2026-02-17 2025-12-31 13F MKS COM 55306N104 42,827 -273 -0.63 6,844 28.29 0.0049
2025-11-14 2025-09-30 13F MKS COM 55306N104 43,100 -1,593 -3.56 5,334 20.14 0.0041
2025-08-08 2025-06-30 13F MKS COM 55306N104 44,693 10,495 30.69 4,441 62.04 0.0038
2025-05-15 2025-03-31 13F MKS INSTRS COM 55306N104 34,198 1,698 5.22 2,741 -19.22 0.0026
2025-02-14 2024-12-31 13F MKS INSTRS COM 55306N104 32,500 -1,175 -3.49 3,393 -7.32 0.0033
2024-10-11 2024-09-30 13F MKS INSTRS COM 55306N104 33,675 1,832 5.75 3,661 -11.98 0.0036
2024-08-15 2024-06-30 13F MKS INSTRS COM 55306N104 31,843 356 1.13 4,158 -0.69 0.0044
2024-05-13 2024-03-31 13F MKS INSTRS COM 55306N104 31,487 261 0.84 4,188 30.35 0.0046
2024-02-14 2023-12-31 13F MKS INSTRS COM 55306N104 31,226 -3,590 -10.31 3,212 6.64 0.0060
2023-11-16 2023-09-30 13F MKS INSTRS COM 55306N104 34,816 4,953 16.59 3,013 -6.69 0.0040
2023-07-21 2023-06-30 13F MKS INSTRS COM 55306N104 29,863 -142 -0.47 3,228 21.40 0.0043
2023-05-15 2023-03-31 13F MKS INSTRS COM 55306N104 30,005 -4,741 -13.64 2,659 -9.68 0.0038
2023-02-10 2022-12-31 13F MKS INSTRS COM 55306N104 34,746 -220 -0.63 2,944 1.87 0.0044
2022-11-03 2022-09-30 13F MKS INSTRS COM 55306N104 34,966 34,966 2,890 0.0050
2022-08-15 2022-06-30 13F MKS INSTRS COM 55306N104 0 -1,430 -100.00 0 -100.00
2022-05-16 2022-03-31 13F MKS INSTRS COM 55306N104 1,430 103 7.76 215 -6.93 0.0003
2022-02-11 2021-12-31 13F MKS INSTRS COM 55306N104 1,327 1,327 231 0.0004
2021-11-10 2021-09-30 13F MKS INSTRS COM 55306N104 0 -1,313 -100.00 0 -100.00
2021-08-04 2021-06-30 13F MKS INSTRS COM 55306N104 1,313 -519 -28.33 234 -31.18 0.0004
2021-04-30 2021-03-31 13F CreativePlanning COM 55306N104 1,832 -1,421 -43.68 340 -30.47 0.0007
2021-01-29 2020-12-31 13F MKS INSTRS COM 55306N104 3,253 197 6.45 489 46.41 0.0011
2020-11-05 2020-09-30 13F MKS INSTRS COM 55306N104 3,056 -51 -1.64 334 -5.11 0.0009
2020-07-23 2020-06-30 13F MKS INSTRS COM 55306N104 3,107 -1 -0.03 352 39.13 0.0010
2020-05-05 2020-03-31 13F MKS INSTRS COM 55306N104 3,108 -40 -1.27 253 -26.88 0.0009
2020-01-30 2019-12-31 13F MKS INSTRUMENT COM 55306N104 3,148 -17 -0.54 346 18.49 0.0010
2019-11-01 2019-09-30 13F MKS INSTRUMENT COM 55306N104 3,165 3,165 292 0.0010
2018-10-25 2018-09-30 13F MKS INSTRUMENT COM 55306N104 0 -2,423 -100.00 0 -100.00
2018-07-20 2018-06-30 13F MKS INSTRUMENT COM 55306N104 2,423 625 34.76 232 11.54 0.0009
2018-04-18 2018-03-31 13F MKS INSTRUMENT COM 55306N104 1,798 1,798 208 0.0008
2018-01-17 2017-12-31 13F MKS INSTRUMENT COM 55306N104 0 -2,235 -100.00 0 -100.00
2017-10-17 2017-09-30 13F MKS INSTRUMENT COM 55306N104 2,235 -4 -0.18 211 39.74 0.0010
2017-07-12 2017-06-30 13F MKS INSTRUMENT COM 55306N104 2,239 416 22.82 151 20.80 0.0008
2017-04-07 2017-03-31 13F MKS INSTRUMENT COM 55306N104 1,823 -151 -7.65 125 6.84 0.0007
2017-01-09 2016-12-31 13F MKS INSTRUMENT COM 55306N104 1,974 85 4.50 117 24.47 0.0007
2016-10-12 2016-09-30 13F MKS INSTRUMENT COM 55306N104 1,889 1,467 347.63 94 422.22 0.0006
2016-07-12 2016-06-30 13F MKS INSTRUMENT COM 55306N104 422 -200 -32.15 18 -21.74 0.0001
2016-04-08 2016-03-31 13F MKS INSTRUMENT COM 55306N104 622 300 93.17 23 91.67 0.0002
2016-01-11 2015-12-31 13F MKS INSTRUMENT COM 55306N104 322 0 0.00 12 9.09 0.0001
2015-10-09 2015-09-30 13F MKS INSTRUMENT COM 55306N104 322 322 0.00 11 0.0001
2015-07-09 2015-06-30 13F MKS INSTRUMENT COM 55306N104 0 -253 -100.00 0 -100.00
2015-04-13 2015-03-31 13F MKS INSTRUMENT COM 55306N104 253 253 0.00 9 0.0001
2015-01-29 2014-12-31 13F MKS INSTRUMENT COM 55306N104 0 -1,153 -100.00 0 -100.00
2014-10-10 2014-09-30 13F MKS INSTRUMENT COM 55306N104 1,153 1,000 653.59 38 660.00 0.0004
2014-08-20 2014-06-30 13F MKS INSTRUMENT COM 55306N104 153 0 0.00 5 0.00 0.0001
2014-04-11 2014-03-31 13F MKS INSTRUMENT COM 55306N104 153 0 0.00 5 0.00 0.0001
2014-01-06 2013-12-31 13F MKS INSTRUMENT COM 55306N104 153 0 0.00 5 25.00 0.0001
2013-10-10 2013-09-30 13F MKS INSTRUMENT COM 55306N104 153 0 0.00 4 0.00 0.0001
2013-07-09 2013-06-30 13F MKS INSTRUMENT COM 55306N104 153 153 4 0.0001
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2021-04-30 2021-03-31 13F MKS INSTRS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-01-29 2020-12-31 13F MKS INSTRS COM Call 4,000 1 n/a n/a n/a
2015-07-09 2015-06-30 13F MKS INSTRUMENT COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-04-13 2015-03-31 13F MKS INSTRUMENT COM Call 1,000 1 n/a n/a n/a
2015-01-29 2014-12-31 13F MKS INSTRUMENT COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-10-10 2014-09-30 13F MKS INSTRUMENT COM Call 5,000 4 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2021-04-30 2021-03-31 13F MKS INSTRS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-01-29 2020-12-31 13F MKS INSTRS COM Put 4,000 1 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.