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MASI

Masimo
MASI

Delisted

MASI was delisted on the 9th of June, 2026.

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338 hedge funds and large institutions have $3.65B invested in Masimo in 2017 Q4 according to their latest regulatory filings, with 53 funds opening new positions, 101 increasing their positions, 131 reducing their positions, and 34 closing their positions.

New
Increased
Maintained
Reduced
Closed

56% more first-time investments, than exits

New positions opened: 53 | Existing positions closed: 34

5% more funds holding

Funds holding: 323 → 338 (+15)

0% more funds holding in top 10

Funds holding in top 10: 1 → 1 (0)

4% less capital invested

Capital invested by funds: $3.8B → $3.65B (-$157M)

1.38% less ownership

Funds ownership: 84.65% → 83.26% (-1.4%)

21% less call options, than puts

Call options by funds: $4.76M | Put options by funds: $6.05M

23% less repeat investments, than reductions

Existing positions increased: 101 | Existing positions reduced: 131

Holders
338
Holders Change
+15
Holders Change %
+4.64%
% of All Funds
7.65%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.02%
New
53
Increased
101
Reduced
131
Closed
34
Calls
$4.76M
Puts
$6.05M
Net Calls
-$1.29M
Net Calls Change
+$1.33M

Top Buyers

Rank Fund Capital Flow
1
Point72 Asset Management
Point72 Asset Management
Connecticut
+$59.3M
2
Westfield Capital Management
Westfield Capital Management
Massachusetts
+$22.8M
3
MWNA
Marshall Wace North America
New York
+$22M
4
CIP
Champlain Investment Partners
Vermont
+$17.2M
5
CWAM
Columbia Wanger Asset Management
Illinois
+$16.6M

Top Sellers

Rank Fund Capital Flow
1
Acadian Asset Management
Acadian Asset Management
Massachusetts
-$45.4M
2
NFA
Nationwide Fund Advisors
Ohio
-$28.7M
3
Two Sigma Advisers
Two Sigma Advisers
New York
-$25.4M
4
NI
Numeric Investors
Massachusetts
-$22.7M
5
Robeco Institutional Asset Management
Robeco Institutional Asset Management
Netherlands
-$16.3M

MASI Hedge Fund Activity: Q4 2017 in Review

338 of the 4,419 institutional investors tracked by Wall St. Rank reported a position in Masimo (MASI) for Q4 2017, worth a combined $3.65B — down 4.1% from $3.8B a quarter earlier.

Buyers outnumbered sellers: 53 funds opened new MASI positions and 34 closed out — a net gain of 19 holders — while 101 added to existing stakes and 131 trimmed.

The largest buyer was Point72 Asset Management, opening a new position worth an estimated $59.3M. The largest seller was Acadian Asset Management, cutting an estimated $45.4M.

  • 338 institutional investors held Masimo (MASI) as of Q4 2017, up from 323 in Q3 2017.
  • Funds reported $3.65B of Masimo stock for Q4 2017, down 4.1% quarter-over-quarter.
  • 53 funds opened new Masimo positions in Q4 2017 and 34 closed out, a net change of +19 holders.
  • The largest Masimo buyer in Q4 2017 was Point72 Asset Management, an estimated $59.3M added.
  • The largest Masimo seller in Q4 2017 was Acadian Asset Management, an estimated $45.4M sold.

Based on aggregated 13F filings for Q4 2017.