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Masimo Corporation

MASI Healthcare
$175.4 $-0.09 (-0.05%)
Market Cap: $9.42 B
Gurus Holding
9
Popularity Rank
#675
% of Shares Held
4.31%
Net Activity (Q4 2025)
+$85.71 M

Guru Ownership Trend

Guru Analysis for Masimo Corporation (MASI)

Masimo Corporation (MASI), a key player in the Healthcare sector, continues to attract institutional attention.

As of Q4 2025, a total of 9 Super Investors (Gurus) hold positions in the company, with a combined stake valued at approximately $395.08 M.

Top institutional holders include Cliff Asness and Andreas Halvorsen.

Institutional sentiment is currently Strongly Bullish. This is evidenced by a $85.71 M net inflow during the quarter.

Recent activity highlights Cliff Asness who dramatically increased their stake. Conversely, Andreas Halvorsen reduced exposure by 52.1%.

Key Holders

Top 5 by Value

$141.94 M
$44.51 M
$18.71 M
$10.79 M

Top 5 by Conviction

Recent Activity Breakdown (Q4 2025)

+$173.42 M
Total Buy Value
New Buys 2
Additions 2
-$87.71 M
Total Sell Value
Reductions 5
Sold Out 0

Guru Consensus (Q4 2025)

Based on recent activity
Net Sellers
5
Net Buyers
4

FAQs for Masimo Corporation (MASI)

Major holders include Cliff Asness ($141.94 M), Andreas Halvorsen ($66.9 M), Joel Greenblatt ($44.51 M). According to the latest reported data, 9 tracked investment managers collectively hold approximately 2.25 M shares.

According to the latest 13F reporting period, sentiment appears Bullish (Net Buying). There was a net inflow of $85.71 M, with 4 managers increasing positions and 5 managers reducing holdings.

During the most recent reporting period, 5 managers trimmed their positions, while 0 fully exited MASI. The total reported sell value was $87.71 M.

Yes, 2 managers opened new positions in MASI, and 2 increased their existing holdings. The total reported buy value was $173.42 M.

Portfolio Manager % Portfolio Activity Shares Value Report Date
0.07% Add 3416.6% 1,091,326 $141.94 M Q4 2025
0.18% Reduce -52.1% 514,340 $66.9 M Q4 2025
0.16% Add 165.2% 342,194 $44.51 M Q4 2025
0.05% Reduce -40.8% 143,825 $18.71 M Q4 2025
0.10% Reduce -1.0% 83,000 $10.79 M Q4 2025
0.01% New Buy 59,900 $7.79 M Q4 2025
0.00% Reduce -48.7% 16,242 $2.11 M Q4 2025
0.00% Reduce -5.5% 1,619 $210,567 Q4 2025
0.00% New Buy 28 $3,642 Q4 2025
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