Walleye Trading
MASI

Walleye Trading’s Masimo MASI Stock Holding History

Walleye Trading’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
Q2 		– Sell
-27,800
Closed -$4.94M – 4276
2026
Q1 		$4.94M Buy
+27,800
New +$4.36M 0.01% 1148
2024
Q2 		– Sell
-300
Closed -$44.1K – 4656
2024
Q1 		$44.1K Sell
300
-4,000
-93% -$516K ﹤0.01% 4058
2023
Q4 		$504K Sell
4,300
-3,900
-48% -$364K ﹤0.01% 3058
2023
Q3 		$719K Buy
+8,200
New +$954K ﹤0.01% 2635
2021
Q4 		– Sell
-500
Closed -$135K – 5641
2021
Q3 		$135K Sell
500
-400
-44% -$108K ﹤0.01% 4191
2021
Q2 		$218K Buy
+900
New +$205K ﹤0.01% 3827
2021
Q1 		– Sell
-300
Closed -$81K – 5086
2020
Q4 		$81K Sell
300
-500
-63% -$125K ﹤0.01% 4020
2020
Q3 		$189K Buy
800
+700
+700% +$157K ﹤0.01% 3029
2020
Q2 		$23K Buy
+100
New +$21.9K ﹤0.01% 3965
2020
Q1 		– Sell
-700
Closed -$111K – 4317
2019
Q4 		$111K Buy
+700
New +$105K ﹤0.01% 3508
2019
Q3 		– Sell
-600
Closed -$89K – 4254
2019
Q2 		$89K Sell
600
-10,500
-95% -$1.44M ﹤0.01% 3352
2019
Q1 		$1.53M Buy
11,100
+4,400
+66% +$552K 0.01% 1290
2018
Q4 		$719K Buy
+6,700
New +$747K 0.01% 2092

Other funds holding MASI

IA
IFP Advisors Tampa, Florida $5.54B AUM 27.43% 1-Year Est. Return
HNB
Huntington National Bank Columbus, Ohio $20.6B AUM 34.61% 1-Year Est. Return

Walleye Trading's MASI Position: Q2 2026 in Review

Walleye Trading sold out of Masimo (MASI) in Q2 2026, closing a stake of 1,100 shares — an estimated $196K sold.

Walleye Trading first reported a position in MASI in Q2 2015 and held it in 16 quarters. The position peaked at $753K in Q4 2023. 2 funds tracked by Wall St. Rank hold MASI as of Q2 2026.

  • Walleye Trading reported no remaining Masimo position as of Q2 2026 after selling out during the quarter.
  • Walleye Trading sold 1,100 Masimo shares in Q2 2026, an estimated $196K.
  • Walleye Trading first reported a position in Masimo in Q2 2015 and held it in 16 quarters.
  • Walleye Trading's Masimo position peaked at $753K in Q4 2023.
  • 2 funds tracked by Wall St. Rank held Masimo as of Q2 2026.

Based on Walleye Trading's 13F filing for Q2 2026, filed 3 Aug 2026.