Twin Tree Management’s Rivian RIVN Stock Holding History

Twin Tree Management’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 Q1	–	Sell	-146,000	Closed	-$2.88M	–	1646
2025 Q4	$2.88M	Buy	146,000 +113,500	+349%	+$1.8M	0.03%	701
2025 Q3	$477K	Sell	32,500 -265,300	-89%	-$3.56M	﹤0.01%	1285
2025 Q2	$4.09M	Sell	297,800 -328,400	-52%	-$4.46M	0.01%	1076
2025 Q1	$7.8M	Buy	626,200 +149,200	+31%	+$1.88M	0.01%	755
2024 Q4	$6.34M	Buy	477,000 +469,800	+6,525%	+$5.41M	0.01%	856
2024 Q3	$80.8K	Buy	+7,200	New	+$103K	﹤0.01%	1381
2024 Q2	–	Sell	-68,800	Closed	-$753K	–	1617
2024 Q1	$753K	Sell	68,800 -635,300	-90%	-$9.16M	﹤0.01%	1083
2023 Q4	$16.5M	Buy	+704,100	New	+$13.2M	0.03%	533
2023 Q2	–	Sell	-133,700	Closed	-$2.07M	–	1475
2023 Q1	$2.07M	Sell	133,700 -1,689,300	-93%	-$28.5M	﹤0.01%	899
2022 Q4	$33.6M	Buy	+1,823,000	New	+$53.7M	0.07%	247

Other funds holding RIVN

ACI

Amazon.com Inc Seattle, Washington $2.63B AUM 20.53% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

UBS AM Chicago, Illinois $481B AUM 26.39% 1-Year Est. Return

Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return

Twin Tree Management's RIVN Position: Q1 2026 in Review

Twin Tree Management reduced its Rivian (RIVN) stake by 57% in Q1 2026, selling an estimated $1.82M and leaving 86,304 shares worth $1.3M. The position accounts for 0.03% of the portfolio, ranked #627.

Twin Tree Management first reported a position in RIVN in Q2 2023 and has held it in 9 quarters since. The position peaked at $11.2M in Q1 2025. 805 funds tracked by Wall St. Rank hold RIVN as of Q1 2026.

Twin Tree Management held 86,304 shares of Rivian worth $1.3M as of Q1 2026.
Twin Tree Management sold 114,102 Rivian shares in Q1 2026, an estimated $1.82M.
Rivian made up 0.03% of Twin Tree Management's portfolio in Q1 2026, its #627 holding.
Twin Tree Management first reported a position in Rivian in Q2 2023 and has held it in 9 quarters since.
Twin Tree Management's Rivian position peaked at $11.2M in Q1 2025.
805 funds tracked by Wall St. Rank held Rivian as of Q1 2026.

Based on Twin Tree Management's 13F filing for Q1 2026, filed 14 May 2026.