GC
MASI

Guggenheim Capital’s Masimo MASI Stock Holding History

Guggenheim Capital’s Portfolio MASI Stock Details MASI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$250K Buy
+1,407
New +$221K ﹤0.01% 1452
2025
Q4 		– Sell
-5,276
Closed -$778K – 1806
2025
Q3 		$778K Sell
5,276
-397
-7% -$60.1K 0.01% 1006
2025
Q2 		$954K Sell
5,673
-683
-11% -$109K 0.01% 899
2025
Q1 		$1.06M Sell
6,356
-665
-9% -$115K 0.01% 857
2024
Q4 		$1.16M Buy
7,021
+2,674
+62% +$422K 0.01% 844
2024
Q3 		$580K Sell
4,347
-152
-3% -$17.6K ﹤0.01% 1345
2024
Q2 		$567K Sell
4,499
-230
-5% -$30.3K ﹤0.01% 1373
2024
Q1 		$694K Buy
4,729
+659
+16% +$85.1K ﹤0.01% 1335
2023
Q4 		$477K Sell
4,070
-200
-5% -$18.6K ﹤0.01% 1473
2023
Q3 		$374K Buy
4,270
+278
+7% +$32.4K ﹤0.01% 1552
2023
Q2 		$657K Sell
3,992
-779
-16% -$136K 0.01% 1341
2023
Q1 		$880K Sell
4,771
-1,616
-25% -$273K 0.01% 1245
2022
Q4 		$945K Sell
6,387
-2,591
-29% -$357K 0.01% 1187
2022
Q3 		$1.27M Buy
8,978
+157
+2% +$22.9K 0.01% 1028
2022
Q2 		$1.15M Sell
8,821
-397
-4% -$53.1K 0.01% 1164
2022
Q1 		$1.34M Buy
9,218
+1,437
+18% +$276K 0.01% 1219
2021
Q4 		$2.28M Sell
7,781
-2,814
-27% -$801K 0.01% 994
2021
Q3 		$2.87M Buy
10,595
+716
+7% +$194K 0.02% 875
2021
Q2 		$2.4M Sell
9,879
-1,062
-10% -$242K 0.01% 995
2021
Q1 		$2.51M Buy
10,941
+1,220
+13% +$306K 0.02% 916
2020
Q4 		$2.61M Sell
9,721
-3,627
-27% -$904K 0.02% 859
2020
Q3 		$3.15M Sell
13,348
-9,991
-43% -$2.24M 0.02% 710
2020
Q2 		$5.32M Buy
23,339
+14,027
+151% +$3.08M 0.04% 498
2020
Q1 		$1.65M Sell
9,312
-3,502
-27% -$601K 0.02% 874
2019
Q4 		$2.02M Buy
12,814
+2,832
+28% +$426K 0.02% 1040
2019
Q3 		$1.49M Sell
9,982
-1,262
-11% -$192K 0.01% 1133
2019
Q2 		$1.67M Sell
11,244
-4,491
-29% -$616K 0.01% 1126
2019
Q1 		$2.18M Buy
15,735
+2,076
+15% +$261K 0.02% 1029
2018
Q4 		$1.47M Sell
13,659
-10,314
-43% -$1.15M 0.01% 1196
2018
Q3 		$2.99M Sell
23,973
-1,657
-6% -$184K 0.02% 1022
2018
Q2 		$2.5M Sell
25,630
-88,613
-78% -$8.43M 0.02% 1110
2018
Q1 		$10M Sell
114,243
-3,674
-3% -$320K 0.02% 681
2017
Q4 		$10M Sell
117,917
-10,429
-8% -$905K 0.02% 688
2017
Q3 		$11.1M Buy
128,346
+12,597
+11% +$1.11M 0.03% 641
2017
Q2 		$10.6M Buy
115,749
+1,780
+2% +$163K 0.03% 653
2017
Q1 		$10.6M Buy
113,969
+78,216
+219% +$6.44M 0.03% 661
2016
Q4 		$2.41M Sell
35,753
-4,902
-12% -$301K 0.01% 1529
2016
Q3 		$2.42M Sell
40,655
-5,248
-11% -$296K 0.01% 1497
2016
Q2 		$2.41M Sell
45,903
-2,496
-5% -$118K 0.01% 1443
2016
Q1 		$2.02M Sell
48,399
-49,216
-50% -$1.85M 0.01% 1558
2015
Q4 		$4.05M Buy
97,615
+57,927
+146% +$2.37M 0.01% 1125
2015
Q3 		$1.53M Sell
39,688
-12,356
-24% -$505K ﹤0.01% 1796
2015
Q2 		$2.02M Buy
+52,044
New +$1.86M 0.01% 1764

Other funds holding MASI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
PCM
Politan Capital Management New York $985M AUM 3.12% 1-Year Est. Return
PCM
Pentwater Capital Management Naples, Florida $19.3B AUM 58.13% 1-Year Est. Return
Barclays
Barclays London, United Kingdom $416B AUM 33.63% 1-Year Est. Return
HI
HBK Investments Dallas, Texas $9.85B AUM 55.6% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Guggenheim Capital's MASI Position: Q1 2026 in Review

Guggenheim Capital opened a new position in Masimo (MASI) in Q1 2026: 1,407 shares worth $250K. The stake represents ﹤0.01% of the portfolio and ranks #1452 among its holdings. This is a return to the name: Guggenheim Capital previously reported a position in MASI as recently as Q3 2025.

Guggenheim Capital first reported a position in MASI in Q2 2015 and has held it in 43 quarters since. The position peaked at $11.1M in Q3 2017. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • Guggenheim Capital held 1,407 shares of Masimo worth $250K as of Q1 2026.
  • Masimo was a new Guggenheim Capital position in Q1 2026.
  • Masimo made up ﹤0.01% of Guggenheim Capital's portfolio in Q1 2026, its #1452 holding.
  • Guggenheim Capital first reported a position in Masimo in Q2 2015 and has held it in 43 quarters since.
  • Guggenheim Capital's Masimo position peaked at $11.1M in Q3 2017.
  • 445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on Guggenheim Capital's 13F filing for Q1 2026, filed 15 May 2026.