Assenagon Asset Management’s Masimo MASI Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
Sell
-53,525
Closed -$6.96M 1174
2025
Q4
$6.96M Buy
53,525
+51,068
+2,078% +$7.31M 0.01% 587
2025
Q3
$363K Sell
2,457
-568
-19% -$86K ﹤0.01% 1096
2025
Q2
$509K Sell
3,025
-1,354
-31% -$216K ﹤0.01% 1029
2025
Q1
$730K Sell
4,379
-211,672
-98% -$36.7M ﹤0.01% 952
2024
Q4
$35.7M Buy
216,051
+194,788
+916% +$30.8M 0.06% 264
2024
Q3
$2.83M Sell
21,263
-29,477
-58% -$3.42M 0.01% 856
2024
Q2
$6.39M Buy
50,740
+43,918
+644% +$5.78M 0.01% 556
2024
Q1
$1M Sell
6,822
-1,951
-22% -$252K ﹤0.01% 1051
2023
Q4
$1.03M Sell
8,773
-17,216
-66% -$1.6M ﹤0.01% 1089
2023
Q3
$2.28M Buy
+25,989
New +$3.02M 0.01% 811
2023
Q2
Sell
-3,924
Closed -$724K 1403
2023
Q1
$724K Sell
3,924
-23,166
-86% -$3.91M ﹤0.01% 1136
2022
Q4
$4.01M Sell
27,090
-264,769
-91% -$36.4M 0.01% 584
2022
Q3
$41.2M Sell
291,859
-258,893
-47% -$37.8M 0.16% 130
2022
Q2
$72M Buy
550,752
+14,940
+3% +$2M 0.27% 76
2022
Q1
$78M Buy
535,812
+508,537
+1,864% +$97.6M 0.22% 90
2021
Q4
$7.99M Hold
27,275
0.02% 389
2021
Q3
$7.38M Buy
+27,275
New +$7.4M 0.02% 333
2021
Q2
Sell
-35,272
Closed -$8.1M 1323
2021
Q1
$8.1M Buy
35,272
+17,244
+96% +$4.33M 0.03% 385
2020
Q4
$4.84M Buy
+18,028
New +$4.5M 0.02% 357
2020
Q3
Sell
-33,848
Closed -$7.72M 1258
2020
Q2
$7.72M Buy
+33,848
New +$7.43M 0.05% 233
2019
Q3
Sell
-112,804
Closed -$16.8M 967
2019
Q2
$16.8M Buy
112,804
+63,698
+130% +$8.74M 0.13% 118
2019
Q1
$6.79M Buy
49,106
+22,676
+86% +$2.85M 0.06% 248
2018
Q4
$2.84M Sell
26,430
-80,059
-75% -$8.93M 0.03% 354
2018
Q3
$13.3M Buy
+106,489
New +$11.8M 0.13% 150
2018
Q2
Sell
-3,933
Closed -$346K 537
2018
Q1
$346K Buy
+3,933
New +$343K ﹤0.01% 499

Other funds holding MASI

Assenagon Asset Management's MASI Position: Q1 2026 in Review

Assenagon Asset Management sold out of Masimo (MASI) in Q1 2026, closing a stake of 53,525 shares — an estimated $6.96M sold.

Assenagon Asset Management first reported a position in MASI in Q1 2018 and held it in 25 quarters. The position peaked at $78M in Q1 2022. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • Assenagon Asset Management reported no remaining Masimo position as of Q1 2026 after selling out during the quarter.
  • Assenagon Asset Management sold 53,525 Masimo shares in Q1 2026, an estimated $6.96M.
  • Assenagon Asset Management first reported a position in Masimo in Q1 2018 and held it in 25 quarters.
  • Assenagon Asset Management's Masimo position peaked at $78M in Q1 2022.
  • 445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on Assenagon Asset Management's 13F filing for Q1 2026, filed 20 Apr 2026.