Vanguard Group’s Masimo MASI Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q4 | $566M | Sell |
4,348,786
-461,225
| -10% | -$66M | 0.01% | 984 |
|
|
2025
Q3 | $710M | Buy |
4,810,011
+171,876
| +4% | +$26M | 0.01% | 859 |
|
|
2025
Q2 | $780M | Buy |
4,638,135
+54,859
| +1% | +$8.76M | 0.01% | 791 |
|
|
2025
Q1 | $764M | Sell |
4,583,276
-3,426
| -0.1% | -$594K | 0.01% | 775 |
|
|
2024
Q4 | $758M | Buy |
4,586,702
+66,215
| +1% | +$10.5M | 0.01% | 812 |
|
|
2024
Q3 | $603M | Sell |
4,520,487
-216,864
| -5% | -$25.2M | 0.01% | 926 |
|
|
2024
Q2 | $597M | Buy |
4,737,351
+181,498
| +4% | +$23.9M | 0.01% | 889 |
|
|
2024
Q1 | $669M | Sell |
4,555,853
-225,490
| -5% | -$29.1M | 0.01% | 849 |
|
|
2023
Q4 | $560M | Buy |
4,781,343
+26,473
| +0.6% | +$2.47M | 0.01% | 905 |
|
|
2023
Q3 | $417M | Sell |
4,754,870
-100,399
| -2% | -$11.7M | 0.01% | 996 |
|
|
2023
Q2 | $799M | Buy |
4,855,269
+182,918
| +4% | +$31.8M | 0.02% | 685 |
|
|
2023
Q1 | $862M | Sell |
4,672,351
-183,150
| -4% | -$30.9M | 0.02% | 644 |
|
|
2022
Q4 | $718M | Buy |
4,855,501
+227,439
| +5% | +$31.3M | 0.02% | 696 |
|
|
2022
Q3 | $653M | Sell |
4,628,062
-290,830
| -6% | -$42.5M | 0.02% | 693 |
|
|
2022
Q2 | $643M | Buy |
4,918,892
+143,232
| +3% | +$19.2M | 0.02% | 725 |
|
|
2022
Q1 | $695M | Buy |
4,775,660
+71,918
| +2% | +$13.8M | 0.02% | 776 |
|
|
2021
Q4 | $1.38B | Buy |
4,703,742
+31,740
| +0.7% | +$9.04M | 0.03% | 543 |
|
|
2021
Q3 | $1.26B | Sell |
4,672,002
-18,337
| -0.4% | -$4.97M | 0.03% | 558 |
|
|
2021
Q2 | $1.14B | Sell |
4,690,339
-19,907
| -0.4% | -$4.54M | 0.03% | 608 |
|
|
2021
Q1 | $1.08B | Buy |
4,710,246
+109,340
| +2% | +$27.5M | 0.03% | 598 |
|
|
2020
Q4 | $1.23B | Buy |
4,600,906
+101,955
| +2% | +$25.4M | 0.04% | 513 |
|
|
2020
Q3 | $1.06B | Sell |
4,498,951
-88,645
| -2% | -$19.9M | 0.04% | 499 |
|
|
2020
Q2 | $1.05B | Buy |
4,587,596
+15,330
| +0.3% | +$3.36M | 0.04% | 482 |
|
|
2020
Q1 | $810M | Buy |
4,572,266
+57,963
| +1% | +$9.94M | 0.03% | 502 |
|
|
2019
Q4 | $714M | Buy |
4,514,303
+34,348
| +0.8% | +$5.16M | 0.02% | 667 |
|
|
2019
Q3 | $667M | Buy |
4,479,955
+30,550
| +0.7% | +$4.64M | 0.02% | 660 |
|
|
2019
Q2 | $662M | Buy |
4,449,405
+27,580
| +0.6% | +$3.78M | 0.02% | 677 |
|
|
2019
Q1 | $611M | Buy |
4,421,825
+65,835
| +2% | +$8.27M | 0.02% | 697 |
|
|
2018
Q4 | $468M | Buy |
4,355,990
+208,282
| +5% | +$23.2M | 0.02% | 737 |
|
|
2018
Q3 | $517M | Buy |
4,147,708
+109,065
| +3% | +$12.1M | 0.02% | 786 |
|
|
2018
Q2 | $394M | Sell |
4,038,643
-174,022
| -4% | -$16.5M | 0.02% | 904 |
|
|
2018
Q1 | $371M | Sell |
4,212,665
-726,878
| -15% | -$63.4M | 0.02% | 903 |
|
|
2017
Q4 | $419M | Sell |
4,939,543
-70,830
| -1% | -$6.14M | 0.02% | 830 |
|
|
2017
Q3 | $434M | Buy |
5,010,373
+74,680
| +2% | +$6.6M | 0.02% | 782 |
|
|
2017
Q2 | $450M | Buy |
4,935,693
+318,060
| +7% | +$29.2M | 0.02% | 746 |
|
|
2017
Q1 | $431M | Buy |
4,617,633
+258,719
| +6% | +$21.3M | 0.02% | 776 |
|
|
2016
Q4 | $294M | Buy |
4,358,914
+205,533
| +5% | +$12.6M | 0.02% | 926 |
|
|
2016
Q3 | $247M | Buy |
4,153,381
+259,847
| +7% | +$14.7M | 0.01% | 982 |
|
|
2016
Q2 | $204M | Buy |
3,893,534
+90,732
| +2% | +$4.27M | 0.01% | 1045 |
|
|
2016
Q1 | $159M | Buy |
3,802,802
+178,838
| +5% | +$6.73M | 0.01% | 1165 |
|
|
2015
Q4 | $150M | Buy |
3,623,964
+41,100
| +1% | +$1.68M | 0.01% | 1178 |
|
|
2015
Q3 | $138M | Buy |
3,582,864
+134,293
| +4% | +$5.49M | 0.01% | 1211 |
|
|
2015
Q2 | $134M | Buy |
3,448,571
+66,745
| +2% | +$2.39M | 0.01% | 1340 |
|
|
2015
Q1 | $112M | Buy |
3,381,826
+221,411
| +7% | +$6.36M | 0.01% | 1425 |
|
|
2014
Q4 | $83.2M | Sell |
3,160,415
-15,790
| -0.5% | -$390K | 0.01% | 1536 |
|
|
2014
Q3 | $67.6M | Sell |
3,176,205
-178,826
| -5% | -$4.08M | 0.01% | 1628 |
|
|
2014
Q2 | $79.2M | Buy |
3,355,031
+170,837
| +5% | +$4.24M | 0.01% | 1563 |
|
|
2014
Q1 | $87M | Buy |
3,184,194
+89,059
| +3% | +$2.54M | 0.01% | 1446 |
|
|
2013
Q4 | $90.5M | Buy |
3,095,135
+105,902
| +4% | +$2.96M | 0.01% | 1388 |
|
|
2013
Q3 | $79.6M | Buy |
2,989,233
+95,928
| +3% | +$2.37M | 0.01% | 1403 |
|
|
2013
Q2 | $61.3M | Buy |
+2,893,305
| New | +$60.9M | 0.01% | 1491 |
|
Other funds holding MASI
PCM
NCMU
Vanguard Group's MASI Position: Q4 2025 in Review
Vanguard Group reduced its Masimo (MASI) stake by 9.6% in Q4 2025, selling an estimated $66M and leaving 4,348,786 shares worth $566M. The position accounts for 0.01% of the portfolio, ranked #984.
Vanguard Group first reported a position in MASI in Q2 2013 and has held it in 51 quarters since. The position peaked at $1.38B in Q4 2021. 390 funds tracked by Wall St. Rank hold MASI as of Q4 2025.
- Vanguard Group held 4,348,786 shares of Masimo worth $566M as of Q4 2025.
- Vanguard Group sold 461,225 Masimo shares in Q4 2025, an estimated $66M.
- Masimo made up 0.01% of Vanguard Group's portfolio in Q4 2025, its #984 holding.
- Vanguard Group first reported a position in Masimo in Q2 2013 and has held it in 51 quarters since.
- Vanguard Group's Masimo position peaked at $1.38B in Q4 2021.
- 390 funds tracked by Wall St. Rank held Masimo as of Q4 2025.
Based on Vanguard Group's 13F filing for Q4 2025, filed 29 Jan 2026.