MASI

equity

Masimo Corp · NASDAQ NMS - GLOBAL MARKET

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Disclosed trades
6
3 buys · 3 sells
Members involved
2
Estimated volume
$331K
sum of ranges
Most recent
Sep 26, 2025
since Jun 25, 2021

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Price, and when Congress traded it

Hollow marks where they traded, filled where the filing went public

MASI closing price, with each disclosed trade marked at the date it happened and the date it was filed$122$159$196Oct 24Aug 25Jun 26
they tradedyou found outthe delaygreen buys · red sells

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If you had bought it yourself

Paid at that day's close, held ever since. No member involved.

Amount
Latest stored close.

Working it out…

Short interest

Shares sold short, as brokers report them to FINRA twice a month

Shares short
3.5M
at May 29, 2026
Of shares outstanding
—
Days to cover
3.6
Since the last report
-6.1%
from 3.73M at May 15, 2026
Oct 15, 2024: 3.58M shares shortOct 31, 2024: 3.35M shares shortNov 15, 2024: 3.34M shares shortNov 29, 2024: 3.2M shares shortDec 13, 2024: 3.45M shares shortDec 31, 2024: 2.74M shares shortJan 15, 2025: 2.82M shares shortJan 31, 2025: 2.91M shares shortFeb 14, 2025: 3.01M shares shortFeb 28, 2025: 3.37M shares shortMar 14, 2025: 3.35M shares shortMar 31, 2025: 2.9M shares shortApr 15, 2025: 2.79M shares shortApr 30, 2025: 2.58M shares shortMay 15, 2025: 3.03M shares shortMay 30, 2025: 3.13M shares shortJun 13, 2025: 3.28M shares shortJun 30, 2025: 3.03M shares shortJul 15, 2025: 3.25M shares shortJul 31, 2025: 3.27M shares shortAug 15, 2025: 4.11M shares shortAug 29, 2025: 3.54M shares shortSep 15, 2025: 3.72M shares shortSep 30, 2025: 3.81M shares shortOct 15, 2025: 3.85M shares shortOct 31, 2025: 3.82M shares shortNov 14, 2025: 3.82M shares shortNov 28, 2025: 3.82M shares shortDec 15, 2025: 3.97M shares shortDec 31, 2025: 3.93M shares shortJan 15, 2026: 4.13M shares shortJan 30, 2026: 4.11M shares shortFeb 13, 2026: 3.98M shares shortFeb 27, 2026: 3.83M shares shortMar 13, 2026: 2.68M shares shortMar 31, 2026: 3.25M shares shortApr 15, 2026: 3.82M shares shortApr 30, 2026: 3.88M shares shortMay 15, 2026: 3.73M shares shortMay 29, 2026: 3.5M shares short
Oct 15, 2024May 29, 2026
Settlement dateShares shortChangeDays to cover
May 29, 20263.5M-6.1%3.6
May 15, 20263.73M-4.0%4.3
Apr 30, 20263.88M+1.7%6.1
Apr 15, 20263.82M+17.6%5.5
Mar 31, 20263.25M+21.2%1.7
Mar 13, 20262.68M-30.0%1.4
Feb 27, 20263.83M-3.9%1.0
Feb 13, 20263.98M-3.2%6.2

Largest fails to deliver, the last year

32 settlement days with at least $10,000 of shares sold and not delivered

Settlement dateSharesValue
Jun 5, 202686.46K$15.5M
Nov 6, 202530.35K$4.3M
Mar 23, 20269.3K$1.7M
Mar 2, 20268K$1.4M
Feb 4, 20267.91K$1.1M

Short interest is every broker's short position at the settlement date, reported to FINRA and published about a week and a half later; it does not say who is short. Days to cover is the short position over the average day's trading, and the share of the company is against the shares outstanding on its latest filing. A fail to deliver is the balance of shares sold and not delivered by settlement, from the SEC: it can be a short seller who never borrowed the stock, but is as often a late delivery that clears within days.

What they lobby on

Disclosed to the Senate, largest spend first

  • MASIMO CORPORATION$100K

    Health Issues, Tariff (miscellaneous tariff bills)

    1st Quarter (Jan 1 - Mar 31) 2026

  • MASIMO CORPORATION$50K

    Health Issues

    2nd Quarter (Apr 1 - June 30) 2026

Federal contracts

Largest awards of the last two years

  • Department of Health and Human Services$589.5K

    MASIMO CORPORATION · from Jan 11, 2022

  • Department of Veterans Affairs$276.4K

    MASIMO AMERICAS, INC. · from Feb 1, 2024

  • Department of Health and Human Services$229.8K

    MASIMO CORPORATION · from Dec 19, 2019

  • Department of Health and Human Services$155.5K

    MASIMO CORPORATION · from Dec 21, 2020

  • Department of Health and Human Services$147.6K

    MASIMO CORPORATION · from Feb 17, 2021

  • Department of Defense$83.8K

    MASIMO CORPORATION · from Sep 27, 2024

More on MASI

Who traded it

Most active first

MemberBuysSells
Kevin HernOK-01 · house22
Tommy TubervilleAL · senate11

Every disclosure

6 in total, newest first

MemberAmount
Kevin HernOK · houseselljoint$15K – $50K
Kevin HernOK · houseselljoint$50K – $100K
Tommy TubervilleAL · senateselljoint$1K – $15K
Tommy TubervilleAL · senatebuyjoint$1K – $15K
Kevin HernOK · housebuyjoint$15K – $50K
Kevin HernOK · housebuyjoint$100K – $250K

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