Ken Griffin’s Birkenstock BIRK Stock Holding History

Ken Griffin’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	$2.26M	Sell	63,000 -55,800	-47%	-$2.18M	﹤0.01%	5838
2025 Q4	$4.86M	Sell	118,800 -186,100	-61%	-$7.88M	﹤0.01%	4328
2025 Q3	$13.8M	Buy	304,900 +201,800	+196%	+$9.88M	﹤0.01%	2792
2025 Q2	$5.07M	Sell	103,100 -84,800	-45%	-$4.36M	﹤0.01%	4088
2025 Q1	$8.62M	Buy	187,900 +124,500	+196%	+$6.56M	﹤0.01%	3054
2024 Q4	$3.59M	Sell	63,400 -28,900	-31%	-$1.47M	﹤0.01%	4523
2024 Q3	$4.55M	Buy	92,300 +43,300	+88%	+$2.36M	﹤0.01%	4077
2024 Q2	$2.67M	Buy	49,000 +4,400	+10%	+$218K	﹤0.01%	4787
2024 Q1	$2.11M	Sell	44,600 -40,100	-47%	-$1.91M	﹤0.01%	5420
2023 Q4	$4.13M	Buy	+84,700	New	+$3.67M	﹤0.01%	4080

Other funds holding BIRK

CMC

Catterton Management Company Greenwich, Connecticut $4.33B AUM 14.37% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

BAMCO Inc New York $33.1B AUM 11.16% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return

William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Westfield Capital Management Boston, Massachusetts $23.8B AUM 49.45% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Ken Griffin's BIRK Position: Q1 2026 in Review

Ken Griffin increased its Birkenstock (BIRK) stake by 313% in Q1 2026, buying an estimated $23.6M and bringing the position to 799,375 shares worth $28.6M. The position accounts for ﹤0.01% of the portfolio, ranked #1913.

Ken Griffin first reported a position in BIRK in Q4 2023 and has held it in 10 quarters since. The position peaked at $170M in Q2 2025. 228 funds tracked by Wall St. Rank hold BIRK as of Q1 2026.

Ken Griffin held 799,375 shares of Birkenstock worth $28.6M as of Q1 2026.
Ken Griffin bought 605,952 Birkenstock shares in Q1 2026, an estimated $23.6M.
Birkenstock made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #1913 holding.
Ken Griffin first reported a position in Birkenstock in Q4 2023 and has held it in 10 quarters since.
Ken Griffin's Birkenstock position peaked at $170M in Q2 2025.
228 funds tracked by Wall St. Rank held Birkenstock as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.