Mariner
BY icon

Mariner’s Byline Bancorp BY Stock Holding History

Mariner’s Portfolio BY Stock Details BY Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$5.17M Buy
137,192
+8,163
+6% +$275K 0.01% 1016
2026
Q1 		$4.07M Buy
129,029
+37,142
+40% +$1.17M ﹤0.01% 1135
2025
Q4 		$2.68M Buy
91,887
+79,022
+614% +$2.22M ﹤0.01% 1334
2025
Q3 		$357K Buy
+12,865
New +$359K ﹤0.01% 2681

Other funds holding BY

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $69.6B AUM 42.52% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Mariner's BY Position: Q2 2026 in Review

Mariner increased its Byline Bancorp (BY) stake by 6.3% in Q2 2026, buying an estimated $275K and bringing the position to 137,192 shares worth $5.17M. The position accounts for 0.01% of the portfolio, ranked #1016.

Mariner first reported a position in BY in Q3 2025 and has held it in 4 quarters since. 208 funds tracked by Wall St. Rank hold BY as of Q2 2026.

  • Mariner held 137,192 shares of Byline Bancorp worth $5.17M as of Q2 2026.
  • Mariner bought 8,163 Byline Bancorp shares in Q2 2026, an estimated $275K.
  • Byline Bancorp made up 0.01% of Mariner's portfolio in Q2 2026, its #1016 holding.
  • Mariner first reported a position in Byline Bancorp in Q3 2025 and has held it in 4 quarters since.
  • 208 funds tracked by Wall St. Rank held Byline Bancorp as of Q2 2026.

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