Which hedge funds own MASI*? MASIMO CORP, Q2 2026 13F holders
0 tracked hedge funds disclosed a position in MASI* (MASIMO CORP) in their Q2 2026 13F filings, worth $0 in total. 68 exited: Politan Capital Management LP, Beryl Capital Management LLC, Slotnik Capital, LLC.
- 0
- Holders
- 0
- New this quarter
- 68
- Exited this quarter
- $0
- Combined value
- 0.0%
- Share of managers holding
Holders, Q2 2026
Exited since the previous filing
Held in a manager's last filing
| CIBRA Capital Ltd | Q1 2026 | Q2 2026 filing not yet received | 7.8% |
Ownership over time
By quarter
| Quarter | Holders | Managers filing | Share holding | Combined value |
|---|---|---|---|---|
| Q2 2026 | 0 | 1,205 | 0.0% | $0 |
| Q1 2026coverage widened | 69 | 1,209 | 5.7% | $3.5bn |
| Q4 2025 | 6 | 71 | 8.5% | $684m |
| Q3 2025 | 6 | 73 | 8.2% | $946m |
| Q2 2025 | 9 | 73 | 12.3% | $1.4bn |
| Q1 2025 | 7 | 73 | 9.6% | $1.3bn |
| Q4 2024 | 6 | 74 | 8.1% | $1.0bn |
| Q3 2024 | 6 | 73 | 8.2% | $916m |
| Q2 2024 | 8 | 73 | 11.0% | $990m |
| Q1 2024 | 7 | 73 | 9.6% | $1.1bn |
| Q4 2023 | 6 | 73 | 8.2% | $818m |
| Q3 2023 | 9 | 73 | 12.3% | $629m |
| Q2 2023 | 5 | 73 | 6.8% | $874m |
| Q1 2023 | 6 | 73 | 8.2% | $1.0bn |
| Q4 2022 | 7 | 73 | 9.6% | $869m |
| Q3 2022 | 7 | 74 | 9.5% | $789m |
| Q2 2022 | 5 | 74 | 6.8% | $51.7m |
| Q1 2022 | 4 | 74 | 5.4% | $20.1m |
| Q4 2021 | 4 | 74 | 5.4% | $193m |
| Q3 2021 | 4 | 71 | 5.6% | $166m |
| Q2 2021 | 4 | 71 | 5.6% | $37.9m |
| Q1 2021 | 6 | 70 | 8.6% | $34.0m |
| Q4 2020 | 1 | 71 | 1.4% | $8.4m |
| Q3 2020 | 2 | 68 | 2.9% | $22.6m |
| Q2 2020 | 1 | 68 | 1.5% | $3.4m |
| Q1 2020 | 2 | 68 | 2.9% | $4.6m |
| Q4 2019 | 2 | 67 | 3.0% | $4.1m |
| Q3 2019 | 2 | 60 | 3.3% | $16.3m |
| Q2 2019 | 2 | 60 | 3.3% | $42.7m |
| Q1 2019 | 2 | 60 | 3.3% | $57.3m |
| Q4 2018 | 3 | 60 | 5.0% | $69.5m |
| Q3 2018 | 4 | 59 | 6.8% | $59.1m |
| Q2 2018 | 3 | 59 | 5.1% | $130m |
| Q1 2018 | 3 | 59 | 5.1% | $167m |
| Q4 2017 | 2 | 59 | 3.4% | $105m |
| Q3 2017 | 2 | 56 | 3.6% | $59.4m |
| Q2 2017 | 2 | 56 | 3.6% | $57.0m |
| Q1 2017 | 2 | 56 | 3.6% | $40.3m |
| Q4 2016 | 3 | 56 | 5.4% | $25.2m |
| Q3 2016 | 3 | 52 | 5.8% | $10.4m |
| Q2 2016 | 3 | 52 | 5.8% | $12.1m |
| Q1 2016 | 2 | 52 | 3.8% | $10.3m |
| Q4 2015 | 2 | 52 | 3.8% | $9.7m |
| Q3 2015 | 2 | 52 | 3.8% | $4.7m |
| Q2 2015 | 1 | 52 | 1.9% | $6.0m |
| Q1 2015 | 1 | 52 | 1.9% | $4.7m |
| Q4 2014 | 2 | 52 | 3.8% | $3.2m |
| Q3 2014 | 2 | 49 | 4.1% | $8.0m |
| Q2 2014 | 2 | 49 | 4.1% | $7.1m |
| Q1 2014 | 1 | 47 | 2.1% | $669k |
| Q4 2013 | 1 | 47 | 2.1% | $216k |
| Q3 2013 | 1 | 45 | 2.2% | $1.6m |
| Q2 2013 | 1 | 43 | 2.3% | $9.7m |
| Q1 2013 | 1 | 39 | 2.6% | $406k |
| Q4 2012 | 1 | 40 | 2.5% | $204k |
| Q3 2011 | 0 | 33 | 0.0% | $0 |
| Q2 2011 | 1 | 33 | 3.0% | $202k |
| Q3 2009 | 0 | 26 | 0.0% | $0 |
| Q2 2009 | 1 | 26 | 3.8% | $436k |
Who discovered MASI* first?
Earliest meaningful positions among the 20 tracked managers seen opening MASI* since Q2 2009.
| Politan Capital Management LP high conviction | Q3 2022 | 39.5% | Exited by Q2 2026 | +26% |
| Farallon Capital Management, L.L.C. | Q2 2022 | 0.1% | Exited by Q1 2025 | +27% |
| Senator Investment Group LP | Q4 2023 | 0.6% | Exited by Q3 2024 | +7.4% |
| Durable Capital Partners LP | Q1 2025 | 1.7% | Exited by Q4 2025 | −11% |
| Alpha Wave Global, LP | Q2 2025 | 1.9% | Exited by Q1 2026 | −23% |
Stock since is the split-adjusted change in the quarter-end price, excluding dividends, from the first reported quarter: the price the 13F filings themselves imply (value ÷ shares), blank across any gap that cannot be accounted for. It describes the stock, not the return any manager earned.
62 already held it when coverage began
Renaissance Technologies LLC (Q2 2013), ADAR1 Capital Management, LLC (Q1 2026), Alpine Associates Management Inc. (Q1 2026), AlphaGrep UK Ltd (Q1 2026), AQR Capital Management LLC (Q1 2026), Armistice Capital, LLC (Q1 2026), Arrowstreet Capital, Limited Partnership (Q1 2026), AQR Arbitrage LLC (Q1 2026), Bayforest Capital Ltd (Q1 2026), Beryl Capital Management LLC (Q1 2026), Brevan Howard Capital Management LP (Q1 2026), Capricorn Fund Managers Ltd (Q1 2026), Caxton Associates LLP (Q1 2026), Centiva Capital, LP (Q1 2026), CIBRA Capital Ltd (Q1 2026), Balyasny Asset Management L.P. (Q1 2026), Corient IA LP (Q1 2026), D. E. Shaw & Co., Inc. (Q1 2026), Davidson Kempner Capital Management LP (Q1 2026), Diametric Capital, LP (Q1 2026), Engineers Gate Manager LP (Q1 2026), ExodusPoint Capital Management, LP (Q1 2026), FORA Capital, LLC (Q1 2026), Fort Baker Capital Management LP (Q1 2026), Fortress Investment Group LLC (Q1 2026), Freestone Grove Partners LP (Q1 2026), GABELLI & Co INVESTMENT ADVISERS, INC. (Q1 2026), Glazer Capital, LLC (Q1 2026), Ground Swell Capital, LLC (Q1 2026), HBK Investments L P (Q1 2026), Hudson Bay Capital Management LP (Q1 2026), Citadel Advisors LLC (Q1 2026), Kryger Capital LLC (Q1 2026), Lighthouse Investment Partners, LLC (Q1 2026), Magnetar Financial LLC (Q1 2026), Machina Capital S.A.S. (Q1 2026), Millennium Management LLC (Q1 2026), Mirabella Financial Services LLP (Q1 2026), O'Connor Alternative Investments LLC (Q1 2026), Marshall Wace, LLP (Q1 2026), Occudo Quantitative Strategies LP (Q1 2026), Oxford Asset Management LLP (Q1 2026), P Schoenfeld Asset Management LP (Q1 2026), Polar Asset Management Partners Inc. (Q1 2026), Prelude Capital Management, LLC (Q1 2026), Quantbot Technologies LP (Q1 2026), Quarry LP (Q1 2026), Oak Thistle LLC (Q1 2026), Qube Research & Technologies Ltd (Q1 2026), Readystate Asset Management LP (Q1 2026), Schonfeld Strategic Advisors LLC (Q1 2026), Slotnik Capital, LLC (Q1 2026), Squarepoint Ops LLC (Q1 2026), SummitTX Capital, L.P. (Q1 2026), Taconic Capital Advisors LP (Q1 2026), TIG Advisors, LLC (Q1 2026), Verition Fund Management LLC (Q1 2026), Versor Investments LP (Q1 2026), Voloridge Investment Management, LLC (Q1 2026), Weiss Asset Management LP (Q1 2026), Whitebox Advisors LLC (Q1 2026), Wolverine Asset Management LLC (Q1 2026)