Who Owns Masimo Corporation (MASI)?Hedge Fund & Institutional Holders
Institutional Holders
4
as of Q4 2025
Total Institutional Value
$957.3B
% of Float Held
16368493.4%
QoQ Change in Holders
+0 / -0
Price History
MASI — Biggest New Institutional Buyers This Quarter
| Fund | Action | Shares Added | Value Added |
|---|---|---|---|
| Pacer Advisors, Inc. | Increased | +7K | +$618K |
Top Institutional Holders(Q4 2025)
| # | Fund | Shares | Value | % of Portfolio | Type |
|---|---|---|---|---|---|
| 1 | Pacer Advisors, Inc. | 7,360 | $957K | 0.00% | Share |
| 2 | GROUP ONE TRADING LLC | 2,500 | $325K | 0.00% | Put |
| 3 | GROUP ONE TRADING LLC | 100 | $13K | 0.00% | Call |
| 4 | Pacer Advisors, Inc. | 67 | $0 | 0.00% | Share |
MASI Institutional Ownership History
| Quarter | Holders | Total Value | Change |
|---|---|---|---|
| Q4 2025 | 1 | $957K | +0 |
| Q3 2025 | 1 | $339K | +0 |
| Q2 2025 | 1 | $319K | +0 |
| Q1 2025 | 1 | $296K | +0 |
| Q4 2024 | 1 | $0 | +0 |
| Q3 2024 | 1 | $0 | +0 |
| Q4 2023 | 1 | $892.3M | +0 |
| Q3 2023 | 1 | $1.2B | — |
Similar Stocks by Institutional Ownership
As of Q4 2025, 4 institutional investors hold MASI (Masimo Corporation). The largest holder is Pacer Advisors, Inc. with $957K in shares. This quarter, 0 institutions opened new positions and 0 closed their positions.
Frequently Asked Questions
How many hedge funds own MASI?
As of Q4 2025, 4 institutional investors report holding MASI (Masimo Corporation) in their 13F filings.
Who is the largest institutional holder of MASI?
The largest institutional holder of MASI is Pacer Advisors, Inc. with $957K in shares.
Is institutional ownership of MASI increasing or decreasing?
This quarter, 0 institutions opened new positions in MASI and 0 closed their positions.