WIC
MASI

Water Island Capital’s Masimo MASI Stock Holding History

Water Island 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
Q2 		– Sell
-194,197
Closed -$34.5M – 115
2026
Q1 		$34.5M Buy
+194,197
New +$30.5M 3.86% 9

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

Water Island Capital's MASI Position: Q2 2026 in Review

Water Island Capital sold out of Masimo (MASI) in Q2 2026, closing a stake of 194,197 shares — an estimated $34.5M sold.

Water Island Capital first reported a position in MASI in Q1 2026 and held it in 1 quarter. The position peaked at $34.5M in Q1 2026. 2 funds tracked by Wall St. Rank hold MASI as of Q2 2026.

  • Water Island Capital reported no remaining Masimo position as of Q2 2026 after selling out during the quarter.
  • Water Island Capital sold 194,197 Masimo shares in Q2 2026, an estimated $34.5M.
  • Water Island Capital first reported a position in Masimo in Q1 2026 and held it in 1 quarter.
  • Water Island Capital's Masimo position peaked at $34.5M in Q1 2026.
  • 2 funds tracked by Wall St. Rank held Masimo as of Q2 2026.

Based on Water Island Capital's 13F filing for Q2 2026, filed 14 Aug 2026.