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Livermore
ZHEN

Masimo Corp

MASIDelisted Jun 10, 2026
Industry
Electromedical & Electrotherapeutic Apparatus
SEC CIK
0000937556

Masimo Corp was delisted on Jun 10, 2026; its insiders filed their last Form 4 on Jun 12, 2026; 451 institutions reported holding it in 13F filings for Q1 2026, worth $9.69B in total; Soros Fund Management was the only superinvestor holding it.

13F holders, Q2 2025

Institutional positions in Masimo Corp as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
379
−11 vs. Q1 2025
Shares held
57.5M
+3.35M (+6.2%) vs. Q1 2025
Total value
$9.68B
+$653.6M (+7.2%) vs. Q1 2025
New holders
46
127 more added
Sold out
57
136 more reduced

3 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting MASI on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2025: 379 institutions
Q1 2021: 481 institutionsQ2 2021: 459 institutionsQ3 2021: 475 institutionsQ4 2021: 520 institutionsQ1 2022: 457 institutionsQ2 2022: 417 institutionsQ3 2022: 418 institutionsQ4 2022: 405 institutionsQ1 2023: 428 institutionsQ2 2023: 415 institutionsQ3 2023: 357 institutionsQ4 2023: 342 institutionsQ1 2024: 339 institutionsQ2 2024: 352 institutionsQ3 2024: 362 institutionsQ4 2024: 366 institutionsQ1 2025: 393 institutionsQ2 2025: 379 institutionsQ3 2025: 358 institutionsQ4 2025: 392 institutionsQ1 2026: 451 institutionsQ2 2026: 2 institutions
Value heldQ2 2025: $9.68B
Q1 2021: $10.3BQ2 2021: $11.1BQ3 2021: $12.5BQ4 2021: $13.6BQ1 2022: $6.61BQ2 2022: $5.81BQ3 2022: $6.54BQ4 2022: $6.58BQ1 2023: $8.30BQ2 2023: $7.56BQ3 2023: $4.18BQ4 2023: $5.91BQ1 2024: $7.59BQ2 2024: $6.24BQ3 2024: $6.72BQ4 2024: $8.50BQ1 2025: $9.02BQ2 2025: $9.68BQ3 2025: $8.29BQ4 2025: $7.20BQ1 2026: $9.69BQ2 2026: $16.2K
Institutions holding MASI and their total value by quarter
QuarterHoldersValue
Q2 20262$16.2K
Q1 2026451$9.69B
Q4 2025392$7.20B
Q3 2025358$8.29B
Q2 2025379$9.68B
Q1 2025393$9.02B
Q4 2024366$8.50B
Q3 2024362$6.72B
Q2 2024352$6.24B
Q1 2024339$7.59B
Q4 2023342$5.91B
Q3 2023357$4.18B
Q2 2023415$7.56B
Q1 2023428$8.30B
Q4 2022405$6.58B
Q3 2022418$6.54B
Q2 2022417$5.81B
Q1 2022457$6.61B
Q4 2021520$13.6B
Q3 2021475$12.5B
Q2 2021459$11.1B
Q1 2021481$10.3B

Institutions, Q2 2025

Shares, value and share of portfolio for each institution holding Masimo Corp; share changes are against Q1 2025.

Institutions holding MASI in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Capital Advisors, Ltd. LLC2$00.00%00.0%Unchanged
Rothschild Investment LLC1$1680.00%00.0%Unchanged
Parkworth Wealth Management, Inc.1$1680.00%00.0%Unchanged
Financial Management Professionals, Inc.1$1680.00%+1New
Tortoise Investment Management, LLC1$1680.00%+1New
DecisionPoint Financial, LLC1$1700.00%+1New
Twin Peaks Wealth Advisors, LLC2$3000.00%+2New
Comprehensive Financial Planning, Inc.2$3360.00%00.0%Unchanged
HFM Investment Advisors, LLC2$3360.00%+1+100.0%Added
Bay Harbor Wealth Management, LLC2$3360.00%+1+100.0%Added
AdvisorNet Financial, Inc2$3360.00%+2New
Rialto Wealth Management, LLC2$3370.00%+2New
South State Corp.3$5050.00%−77−96.3%Reduced
SJS Investment Consulting Inc.3$5050.00%−2−40.0%Reduced
Bare Financial Services, Inc3$5050.00%00.0%Unchanged
Hughes Financial Services, LLC4$5790.00%00.0%Unchanged
Principal Securities, Inc.4$6730.00%−54−93.1%Reduced
Prestige Wealth Management Group LLC4$6730.00%00.0%Unchanged
Highline Wealth Partners LLC4$6730.00%00.0%Unchanged
Cromwell Holdings LLC4$6730.00%+4New
Creative Financial Designs Inc5$8410.00%00.0%Unchanged
Kayne Anderson Rudnick Investment Management LLC5$8410.00%00.0%Unchanged
Leonteq Securities AG6$1.01K0.00%00.0%Unchanged
DiNuzzo Private Wealth, Inc.6$1.01K0.00%00.0%Unchanged
Harbour Investments, Inc.9$1.51K0.00%−10−52.6%Reduced
Fortitude Family Office, LLC11$1.85K0.00%+11New
Adirondack Trust Co12$2.02K0.00%00.0%Unchanged
Capital A Wealth Management, LLC20$2.34K0.03%+20New
Whipplewood Advisors, LLC14$2.35K0.00%+14New
J.Safra Asset Management Corp15$2.52K0.00%00.0%Unchanged
WPG Advisers, LLC15$2.52K0.00%00.0%Unchanged
Private Wealth Management Group, LLC15$2.52K0.00%−9−37.5%Reduced
Kestra Investment Management, LLC16$2.68K0.00%+9+128.6%Added
Brown Brothers Harriman & Co17$2.86K0.00%+17New
Ameriflex Group, Inc.20$3.33K0.00%00.0%Unchanged
JFS Wealth Advisors, LLC20$3.37K0.00%−3−13.0%Reduced
WealthCollab, LLC20$3.37K0.00%00.0%Unchanged
Sachetta, LLC23$3.87K0.00%00.0%Unchanged
Hallmark Capital Management Inc26$4.37K0.00%00.0%Unchanged
Essential Partners LLC29$4.88K0.00%+29New
Bell Investment Advisors, Inc29$4.88K0.00%+12+70.6%Added
Inlight Wealth Management, LLC30$5.05K0.00%00.0%Unchanged
Larson Financial Group LLC33$5.55K0.00%+11+50.0%Added
Nisa Investment Advisors, LLC34$5.72K0.00%+4+13.3%Added
Steward Partners Investment Advisory, LLC35$5.89K0.00%−19−35.2%Reduced
Hemington Wealth Management38$6.00K0.00%−6−13.6%Reduced
Farmers & Merchants Investments Inc36$6.06K0.00%+3+9.1%Added
GPS Wealth Strategies Group, LLC37$6.22K0.00%00.0%Unchanged
First Horizon Advisors, Inc.39$6.56K0.00%00.0%Unchanged
Geneos Wealth Management Inc.40$6.73K0.00%+3+8.1%Added
Salomon & Ludwin, LLC40$6.85K0.00%+40New
Spire Wealth Management44$7.40K0.00%00.0%Unchanged
Clean Yield Group49$8.24K0.00%00.0%Unchanged
Investors Research Corp50$8.41K0.00%00.0%Unchanged
GeoWealth Management, LLC50$8.41K0.00%+50New
CIBC Private Wealth Group, LLC55$9.25K0.00%−182−76.8%Reduced
Holos Integrated Wealth LLC68$9.84K0.01%00.0%Unchanged
Smithfield Trust Co65$11.0K0.00%00.0%Unchanged
Hantz Financial Services, Inc.65$11.0K0.00%+59+983.3%Added
Boreal Capital Management LLC75$12.6K0.01%+75New
Central Trust Co79$13.3K0.00%00.0%Unchanged
Covestor Ltd81$14.0K0.01%−1−1.2%Reduced
Huntington National Bank87$14.6K0.00%−219−71.6%Reduced
Rise Advisors, LLC93$15.6K0.01%00.0%Unchanged
Parkside Financial Bank & Trust93$15.6K0.00%00.0%Unchanged
Simplex Trading, LLC98$16.0K0.00%−2,240−95.8%Reduced
Fourth Dimension Wealth, LLC100$16.8K0.01%00.0%Unchanged
GWM Advisors LLC112$18.8K0.00%00.0%Unchanged
Harvest Fund Management Co., Ltd115$19.0K0.00%−3,814−97.1%Reduced
True Wealth Design, LLC116$19.5K0.01%+27+30.3%Added
Nomura Asset Management Co Ltd120$20.2K0.00%00.0%Unchanged
Optiver Holding B.V.124$20.9K0.00%+6+5.1%Added
Bessemer Group Inc127$21.0K0.00%+6+5.0%Added
GW&K Investment Management, LLC135$23.0K0.00%00.0%Unchanged
Northwestern Mutual Wealth Management Co152$25.6K0.00%00.0%Unchanged
SRS Capital Advisors, Inc.163$27.4K0.00%+53+48.2%Added
Smartleaf Asset Management LLC170$28.6K0.00%−88−34.1%Reduced
Skopos Labs, Inc.187$31.5K0.00%+75+67.0%Added
EverSource Wealth Advisors, LLC188$31.6K0.00%−33−14.9%Reduced
MAI Capital Management202$34.0K0.00%+129+176.7%Added
Farther Finance Advisors, LLC205$34.5K0.00%−1−0.5%Reduced
Hilltop National Bank218$36.7K0.01%+218New
Massmutual Trust Co FSB263$44.2K0.00%+22+9.1%Added
IFP Advisors, Inc0$44.2K0.00%−4−100.0%Reduced
SBI Securities Co., Ltd.274$46.1K0.00%−5−1.8%Reduced
Parallel Advisors, LLC297$50.0K0.00%−100−25.2%Reduced
Ronald Blue Trust, Inc.340$57.2K0.00%+34+11.1%Added
Jones Financial Companies LLLP354$59.5K0.00%+19+5.7%Added
DHJJ Financial Advisors, Ltd.360$60.6K0.02%00.0%Unchanged
NBC Securities, Inc.368$61.0K0.00%00.0%Unchanged
Signaturefd, LLC384$64.6K0.00%−34−8.1%Reduced
Allworth Financial LP387$65.1K0.00%+163+72.8%Added
Clearstead Advisors, LLC397$66.8K0.00%+397New
Danske Bank A/S400$67.3K0.00%+400New
Umb Bank N A413$69.5K0.00%−34−7.6%Reduced
Quantbot Technologies LP509$85.6K0.00%+509New
Fifth Third Bancorp584$98.2K0.00%−64−9.9%Reduced
C M Bidwell & Associates Ltd597$100.4K0.05%00.0%Unchanged
Harbor Investment Advisory, LLC600$100.9K0.01%−370−38.1%Reduced
Ci Investments Inc.701$118.0K0.00%−30−4.1%Reduced