Mizuho Markets Americas’s Rivian RIVN Stock Holding History

Mizuho Markets Americas’s Portfolio RIVN Stock Details RIVN Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$10M	Sell	578,174 -104,850	-15%	-$1.64M	0.16%	104
2026 Q1	$10.3M	Buy	683,024 +94,840	+16%	+$1.52M	0.28%	73
2025 Q4	$11.6M	Sell	588,184 -150,350	-20%	-$2.39M	0.22%	88
2025 Q3	$10.8M	Buy	738,534 +615,710	+501%	+$8.25M	0.2%	73
2025 Q2	$1.69M	Buy	+122,824	New	+$1.67M	0.05%	77
2024 Q4	–	Sell	-531,568	Closed	-$5.96M	–	262
2024 Q3	$5.96M	Buy	531,568 +124,950	+31%	+$1.8M	0.12%	117
2024 Q2	$5.46M	Sell	406,618 -105,095	-21%	-$1.1M	0.13%	130
2024 Q1	$5.6M	Buy	511,713 +156,245	+44%	+$2.25M	0.14%	121
2023 Q4	$8.34M	Buy	+355,468	New	+$6.68M	0.23%	49

Other funds holding RIVN

ACI

Amazon.com Inc Seattle, Washington $4.42B AUM 22.6% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Baillie Gifford & Co Edinburgh, United Kingdom $110B AUM 4.8% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

SPC

Slate Path Capital New York $7.22B AUM 110.75% 1-Year Est. Return

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

Uber San Francisco, California $4.51B AUM 1.92% 1-Year Est. Return

Mizuho Markets Americas's RIVN Position: Q2 2026 in Review

Mizuho Markets Americas reduced its Rivian (RIVN) stake by 15% in Q2 2026, selling an estimated $1.64M and leaving 578,174 shares worth $10M. The position accounts for 0.16% of the portfolio, ranked #104.

Mizuho Markets Americas first reported a position in RIVN in Q4 2023 and has held it in 9 quarters since. The position peaked at $11.6M in Q4 2025. 815 funds tracked by Wall St. Rank hold RIVN as of Q2 2026.

Mizuho Markets Americas held 578,174 shares of Rivian worth $10M as of Q2 2026.
Mizuho Markets Americas sold 104,850 Rivian shares in Q2 2026, an estimated $1.64M.
Rivian made up 0.16% of Mizuho Markets Americas's portfolio in Q2 2026, its #104 holding.
Mizuho Markets Americas first reported a position in Rivian in Q4 2023 and has held it in 9 quarters since.
Mizuho Markets Americas's Rivian position peaked at $11.6M in Q4 2025.
815 funds tracked by Wall St. Rank held Rivian as of Q2 2026.

Based on Mizuho Markets Americas's 13F filing for Q2 2026, filed 24 Jul 2026.