Mariner
BIRK icon

Mariner’s Birkenstock BIRK Stock Holding History

Mariner’s Portfolio BIRK Stock Details BIRK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-10,355
Closed -$423K – 3578
2025
Q4 		$423K Buy
10,355
+5,348
+107% +$226K ﹤0.01% 2571
2025
Q3 		$227K Sell
5,007
-253
-5% -$12.4K ﹤0.01% 3066
2025
Q2 		$259K Buy
+5,260
New +$270K ﹤0.01% 2845

Other funds holding BIRK

CMC
Catterton Management Company Greenwich, Connecticut $4.33B AUM 14.37% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
BAMCO Inc
BAMCO Inc New York $33.1B AUM 11.16% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $30.3B AUM 33.75% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $23.8B AUM 49.45% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Mariner's BIRK Position: Q1 2026 in Review

Mariner sold out of Birkenstock (BIRK) in Q1 2026, closing a stake of 10,355 shares — an estimated $423K sold.

Mariner first reported a position in BIRK in Q2 2025 and held it in 3 quarters. The position peaked at $423K in Q4 2025. 227 funds tracked by Wall St. Rank hold BIRK as of Q1 2026.

  • Mariner reported no remaining Birkenstock position as of Q1 2026 after selling out during the quarter.
  • Mariner sold 10,355 Birkenstock shares in Q1 2026, an estimated $423K.
  • Mariner first reported a position in Birkenstock in Q2 2025 and held it in 3 quarters.
  • Mariner's Birkenstock position peaked at $423K in Q4 2025.
  • 227 funds tracked by Wall St. Rank held Birkenstock as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.