Mariner
WAY

Mariner’s Waystar Holding Corp WAY Stock Holding History

Mariner’s Portfolio WAY Stock Details WAY Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$3.62M Buy
176,297
+61,851
+54% +$1.3M ﹤0.01% 1184
2026
Q1 		$2.76M Buy
+114,446
New +$3.04M ﹤0.01% 1355
2025
Q4 		– Sell
-6,083
Closed -$231K – 3847
2025
Q3 		$231K Sell
6,083
-4,957
-45% -$184K ﹤0.01% 3047
2025
Q2 		$451K Buy
+11,040
New +$425K ﹤0.01% 2408

Other funds holding WAY

EFM
EQT Fund Management Luxembourg $863M AUM 26.03% 1-Year Est. Return
Canada Pension Plan Investment Board
Canada Pension Plan Investment Board Toronto Ontario, Ontario, Canada $181B AUM 41.77% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BCI
Bain Capital Investors Boston, Massachusetts $4.82B AUM 35.43% 1-Year Est. Return
AI
Advent International Boston, Massachusetts $17.7B AUM 5.23% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
GAM
Goldentree Asset Management New York $1.72B AUM 1.39% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Bank of Montreal
Bank of Montreal Toronto, Ontario, Canada $304B AUM 35.64% 1-Year Est. Return

Mariner's WAY Position: Q2 2026 in Review

Mariner increased its Waystar Holding Corp (WAY) stake by 54% in Q2 2026, buying an estimated $1.3M and bringing the position to 176,297 shares worth $3.62M. The position accounts for ﹤0.01% of the portfolio, ranked #1184.

Mariner first reported a position in WAY in Q2 2025 and has held it in 4 quarters since. 302 funds tracked by Wall St. Rank hold WAY as of Q2 2026.

  • Mariner held 176,297 shares of Waystar Holding Corp worth $3.62M as of Q2 2026.
  • Mariner bought 61,851 Waystar Holding Corp shares in Q2 2026, an estimated $1.3M.
  • Waystar Holding Corp made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #1184 holding.
  • Mariner first reported a position in Waystar Holding Corp in Q2 2025 and has held it in 4 quarters since.
  • 302 funds tracked by Wall St. Rank held Waystar Holding Corp as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.